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* Merge tag 'docs-broken-links' of git://linuxtv.org/mchehab/experimentalLinus Torvalds2018-06-174-5/+5
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull documentation fixes from Mauro Carvalho Chehab: "This solves a series of broken links for files under Documentation, and improves a script meant to detect such broken links (see scripts/documentation-file-ref-check). The changes on this series are: - can.rst: fix a footnote reference; - crypto_engine.rst: Fix two parsing warnings; - Fix a lot of broken references to Documentation/*; - improve the scripts/documentation-file-ref-check script, in order to help detecting/fixing broken references, preventing false-positives. After this patch series, only 33 broken references to doc files are detected by scripts/documentation-file-ref-check" * tag 'docs-broken-links' of git://linuxtv.org/mchehab/experimental: (26 commits) fix a series of Documentation/ broken file name references Documentation: rstFlatTable.py: fix a broken reference ABI: sysfs-devices-system-cpu: remove a broken reference devicetree: fix a series of wrong file references devicetree: fix name of pinctrl-bindings.txt devicetree: fix some bindings file names MAINTAINERS: fix location of DT npcm files MAINTAINERS: fix location of some display DT bindings kernel-parameters.txt: fix pointers to sound parameters bindings: nvmem/zii: Fix location of nvmem.txt docs: Fix more broken references scripts/documentation-file-ref-check: check tools/*/Documentation scripts/documentation-file-ref-check: get rid of false-positives scripts/documentation-file-ref-check: hint: dash or underline scripts/documentation-file-ref-check: add a fix logic for DT scripts/documentation-file-ref-check: accept more wildcards at filenames scripts/documentation-file-ref-check: fix help message media: max2175: fix location of driver's companion documentation media: v4l: fix broken video4linux docs locations media: dvb: point to the location of the old README.dvb-usb file ...
| * docs: Fix some broken referencesMauro Carvalho Chehab2018-06-154-5/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As we move stuff around, some doc references are broken. Fix some of them via this script: ./scripts/documentation-file-ref-check --fix Manually checked if the produced result is valid, removing a few false-positives. Acked-by: Takashi Iwai <tiwai@suse.de> Acked-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Stephen Boyd <sboyd@kernel.org> Acked-by: Charles Keepax <ckeepax@opensource.wolfsonmicro.com> Acked-by: Mathieu Poirier <mathieu.poirier@linaro.org> Reviewed-by: Coly Li <colyli@suse.de> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Acked-by: Jonathan Corbet <corbet@lwn.net>
* | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds2018-06-162-4/+2
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking fixes from David Miller: 1) Various netfilter fixlets from Pablo and the netfilter team. 2) Fix regression in IPVS caused by lack of PMTU exceptions on local routes in ipv6, from Julian Anastasov. 3) Check pskb_trim_rcsum for failure in DSA, from Zhouyang Jia. 4) Don't crash on poll in TLS, from Daniel Borkmann. 5) Revert SO_REUSE{ADDR,PORT} change, it regresses various things including Avahi mDNS. From Bart Van Assche. 6) Missing of_node_put in qcom/emac driver, from Yue Haibing. 7) We lack checking of the TCP checking in one special case during SYN receive, from Frank van der Linden. 8) Fix module init error paths of mac80211 hwsim, from Johannes Berg. 9) Handle 802.1ad properly in stmmac driver, from Elad Nachman. 10) Must grab HW caps before doing quirk checks in stmmac driver, from Jose Abreu. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (81 commits) net: stmmac: Run HWIF Quirks after getting HW caps neighbour: skip NTF_EXT_LEARNED entries during forced gc net: cxgb3: add error handling for sysfs_create_group tls: fix waitall behavior in tls_sw_recvmsg tls: fix use-after-free in tls_push_record l2tp: filter out non-PPP sessions in pppol2tp_tunnel_ioctl() l2tp: reject creation of non-PPP sessions on L2TPv2 tunnels mlxsw: spectrum_switchdev: Fix port_vlan refcounting mlxsw: spectrum_router: Align with new route replace logic mlxsw: spectrum_router: Allow appending to dev-only routes ipv6: Only emit append events for appended routes stmmac: added support for 802.1ad vlan stripping cfg80211: fix rcu in cfg80211_unregister_wdev mac80211: Move up init of TXQs mac80211_hwsim: fix module init error paths cfg80211: initialize sinfo in cfg80211_get_station nl80211: fix some kernel doc tag mistakes hv_netvsc: Fix the variable sizes in ipsecv2 and rsc offload rds: avoid unenecessary cong_update in loop transport l2tp: clean up stale tunnel or session in pppol2tp_connect's error path ...
| * tc-testing: ife: fix wrong teardown command in test b7b8Davide Caratti2018-06-121-1/+1
| | | | | | | | | | | | | | | | | | fix failures in the 'teardown' stage of test b7b8, probably a leftover of commit 7c5995b33d6e ("tc-testing: fixed copy-pasting error in ife tests") Fixes: a56e6bcd34b55 ("tc-testing: updated ife test cases") Signed-off-by: Davide Caratti <dcaratti@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| * Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller2018-06-111-3/+1
| |\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Daniel Borkmann says: ==================== pull-request: bpf 2018-06-12 The following pull-request contains BPF updates for your *net* tree. The main changes are: 1) Avoid an allocation warning in AF_XDP by adding __GFP_NOWARN for the umem setup, from Björn. 2) Silence a warning in bpf fs when an application tries to open(2) a pinned bpf obj due to missing fops. Add a dummy open fop that continues to just bail out in such case, from Daniel. 3) Fix a BPF selftest urandom_read build issue where gcc complains that it gets built twice, from Anders. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| | * selftests: bpf: fix urandom_read build issueAnders Roxell2018-06-111-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | gcc complains that urandom_read gets built twice. gcc -o tools/testing/selftests/bpf/urandom_read -static urandom_read.c -Wl,--build-id gcc -Wall -O2 -I../../../include/uapi -I../../../lib -I../../../lib/bpf -I../../../../include/generated -I../../../include urandom_read.c urandom_read -lcap -lelf -lrt -lpthread -o tools/testing/selftests/bpf/urandom_read gcc: fatal error: input file ‘tools/testing/selftests/bpf/urandom_read’ is the same as output file compilation terminated. ../lib.mk:110: recipe for target 'tools/testing/selftests/bpf/urandom_read' failed To fix this issue remove the urandom_read target and so target TEST_CUSTOM_PROGS gets used. Fixes: 81f77fd0deeb ("bpf: add selftest for stackmap with BPF_F_STACK_BUILD_ID") Signed-off-by: Anders Roxell <anders.roxell@linaro.org> Acked-by: Yonghong Song <yhs@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
* | | Merge tag 'linux-kselftest-4.18-rc1-2' of ↵Linus Torvalds2018-06-153-2/+17
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull more Kselftest updates from Shuah Khan: - fix a signedness bug in cgroups test - add ppc support for kprobe args tests * tag 'linux-kselftest-4.18-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: kselftest/cgroup: fix a signedness bug selftests/ftrace: Add ppc support for kprobe args tests
| * | | kselftest/cgroup: fix a signedness bugDan Carpenter2018-06-071-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | "len" needs to be signed for the error handling to work. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
| * | | selftests/ftrace: Add ppc support for kprobe args testsNaveen N. Rao2018-06-072-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add powerpc support for the recently added kprobe args tests. Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Reviewed-by: Masami Hiramatsu <mhiramat@kernel.org> Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
* | | | Merge tag 'pm-4.18-rc1-2' of ↵Linus Torvalds2018-06-134-16/+45
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull more power management updates from Rafael Wysocki: "These revert a recent PM core change that introduced a regression, fix the build when the recently added Kryo cpufreq driver is selected, add support for devices attached to multiple power domains to the generic power domains (genpd) framework, add support for iowait boosting on systens with hardware-managed P-states (HWP) enabled to the intel_pstate driver, modify the behavior of the wakeup_count device attribute in sysfs, fix a few issues and clean up some ugliness, mostly in cpufreq (core and drivers) and in the cpupower utility. Specifics: - Revert a recent PM core change that attempted to fix an issue related to device links, but introduced a regression (Rafael Wysocki) - Fix build when the recently added cpufreq driver for Kryo processors is selected by making it possible to build that driver as a module (Arnd Bergmann) - Fix the long idle detection mechanism in the out-of-band (ondemand and conservative) cpufreq governors (Chen Yu) - Add support for devices in multiple power domains to the generic power domains (genpd) framework (Ulf Hansson) - Add support for iowait boosting on systems with hardware-managed P-states (HWP) enabled to the intel_pstate driver and make it use that feature on systems with Skylake Xeon processors as it is reported to improve performance significantly on those systems (Srinivas Pandruvada) - Fix and update the acpi_cpufreq, ti-cpufreq and imx6q cpufreq drivers (Colin Ian King, Suman Anna, Sébastien Szymanski) - Change the behavior of the wakeup_count device attribute in sysfs to expose the number of events when the device might have aborted system suspend in progress (Ravi Chandra Sadineni) - Fix two minor issues in the cpupower utility (Abhishek Goel, Colin Ian King)" * tag 'pm-4.18-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: Revert "PM / runtime: Fixup reference counting of device link suppliers at probe" cpufreq: imx6q: check speed grades for i.MX6ULL cpufreq: governors: Fix long idle detection logic in load calculation cpufreq: intel_pstate: enable boost for Skylake Xeon PM / wakeup: Export wakeup_count instead of event_count via sysfs PM / Domains: Add dev_pm_domain_attach_by_id() to manage multi PM domains PM / Domains: Add support for multi PM domains per device to genpd PM / Domains: Split genpd_dev_pm_attach() PM / Domains: Don't attach devices in genpd with multi PM domains PM / Domains: dt: Allow power-domain property to be a list of specifiers cpufreq: intel_pstate: New sysfs entry to control HWP boost cpufreq: intel_pstate: HWP boost performance on IO wakeup cpufreq: intel_pstate: Add HWP boost utility and sched util hooks cpufreq: ti-cpufreq: Use devres managed API in probe() cpufreq: ti-cpufreq: Fix an incorrect error return value cpufreq: ACPI: make function acpi_cpufreq_fast_switch() static cpufreq: kryo: allow building as a loadable module cpupower : Fix header name to read idle state name cpupower: fix spelling mistake: "logilename" -> "logfilename"
| * \ \ \ Merge tag 'linux-cpupower-4.18-rc1' of ↵Rafael J. Wysocki2018-06-064-16/+45
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux Pull cpupower updates for v4.18-rc1 from Shuah Khan: "This cpupower update for 4.18-rc1 consists of two minor fixes." * tag 'linux-cpupower-4.18-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux: cpupower : Fix header name to read idle state name cpupower: fix spelling mistake: "logilename" -> "logfilename"
| | * | | | cpupower : Fix header name to read idle state nameAbhishek Goel2018-05-293-15/+44
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The names of the idle states in the output of cpupower monitor command are truncated to 4 characters. On POWER9, this creates ambiguity as the states are named "stop0", "stop1", etc. root:~# cpupower monitor |Idle_Stats PKG |CORE|CPU | snoo | stop | stop | stop | stop | stop | stop 0| 0| 0| 0.00| 0.00| 0.00| 0.00| 0.00| 0.00| 1.90 0| 0| 1| 0.00| 0.00| 0.00| 0.00| 0.00| 0.00| 0.00 0| 0| 2| 0.00| 0.00| 0.00| 0.00| 0.00| 0.00| 0.00 0| 0| 3| 0.00| 0.00| 0.00| 0.00| 0.00| 0.00| 0.00 This patch modifies the output to print the state name that results in a legible output. The names will be printed with atmost 1 padding in left. root:~# cpupower monitor | Idle_Stats PKG|CORE| CPU|snooze|stop0L| stop0|stop1L| stop1|stop2L| stop2 0| 0| 0| 0.00| 0.00| 0.00| 0.00| 0.00| 0.00| 0.72 0| 0| 1| 0.00| 0.00| 0.00| 0.00| 0.00| 0.00| 0.00 0| 0| 2| 0.00| 0.00| 0.00| 0.00| 0.00| 0.00| 0.00 0| 0| 3| 0.00| 0.00| 0.00| 0.00| 0.00| 0.00| 0.00 This patch does not affect the output for intel. Output for intel before applying the patch: root:~# cpupower monitor |Idle_Stats CPU | POLL | C1-S | C1E- | C3-S | C6-S | C7s- | C8-S | C9-S | C10- 0| 0.00| 0.14| 0.39| 0.35| 7.41| 0.00| 17.67| 1.01| 70.03 2| 0.00| 0.19| 0.47| 0.10| 6.50| 0.00| 29.66| 2.17| 58.07 1| 0.00| 0.11| 0.50| 1.50| 9.11| 0.18| 18.19| 0.40| 66.63 3| 0.00| 0.67| 0.42| 0.03| 5.84| 0.00| 12.58| 0.77| 77.14 Output for intel after applying the patch: root:~# cpupower monitor | Idle_Stats CPU| POLL | C1-S | C1E- | C3-S | C6-S | C7s- | C8-S | C9-S | C10- 0| 0.03| 0.33| 1.01| 0.27| 3.03| 0.00| 19.18| 0.00| 71.24 2| 0.00| 1.58| 0.58| 0.42| 8.55| 0.09| 21.11| 0.99| 63.32 1| 0.00| 1.26| 0.88| 0.43| 9.00| 0.02| 7.78| 4.65| 71.91 3| 0.00| 0.30| 0.42| 0.06| 13.62| 0.21| 30.29| 0.00| 52.45 Signed-off-by: Abhishek Goel <huntbag@linux.vnet.ibm.com> Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
| | * | | | cpupower: fix spelling mistake: "logilename" -> "logfilename"Colin Ian King2018-05-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Trivial fix to spelling mistake in dprintf message Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Shuah Khan (Samsung OSG) <shuah@kernel.org>
* | | | | | Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds2018-06-121-2/+2
|\ \ \ \ \ \ | |_|_|_|/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull KVM updates from Paolo Bonzini: "Small update for KVM: ARM: - lazy context-switching of FPSIMD registers on arm64 - "split" regions for vGIC redistributor s390: - cleanups for nested - clock handling - crypto - storage keys - control register bits x86: - many bugfixes - implement more Hyper-V super powers - implement lapic_timer_advance_ns even when the LAPIC timer is emulated using the processor's VMX preemption timer. - two security-related bugfixes at the top of the branch" * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (79 commits) kvm: fix typo in flag name kvm: x86: use correct privilege level for sgdt/sidt/fxsave/fxrstor access KVM: x86: pass kvm_vcpu to kvm_read_guest_virt and kvm_write_guest_virt_system KVM: x86: introduce linear_{read,write}_system kvm: nVMX: Enforce cpl=0 for VMX instructions kvm: nVMX: Add support for "VMWRITE to any supported field" kvm: nVMX: Restrict VMX capability MSR changes KVM: VMX: Optimize tscdeadline timer latency KVM: docs: nVMX: Remove known limitations as they do not exist now KVM: docs: mmu: KVM support exposing SLAT to guests kvm: no need to check return value of debugfs_create functions kvm: Make VM ioctl do valloc for some archs kvm: Change return type to vm_fault_t KVM: docs: mmu: Fix link to NPT presentation from KVM Forum 2008 kvm: x86: Amend the KVM_GET_SUPPORTED_CPUID API documentation KVM: x86: hyperv: declare KVM_CAP_HYPERV_TLBFLUSH capability KVM: x86: hyperv: simplistic HVCALL_FLUSH_VIRTUAL_ADDRESS_{LIST,SPACE}_EX implementation KVM: x86: hyperv: simplistic HVCALL_FLUSH_VIRTUAL_ADDRESS_{LIST,SPACE} implementation KVM: introduce kvm_make_vcpus_request_mask() API KVM: x86: hyperv: do rep check for each hypercall separately ...
| * | | | | kvm: fix typo in flag nameMichael S. Tsirkin2018-06-121-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | KVM_X86_DISABLE_EXITS_HTL really refers to exit on halt. Obviously a typo: should be named KVM_X86_DISABLE_EXITS_HLT. Fixes: caa057a2cad ("KVM: X86: Provide a capability to disable HLT intercepts") Cc: stable@vger.kernel.org Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* | | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/netLinus Torvalds2018-06-103-4/+80
|\ \ \ \ \ \ | | |_|_|_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull networking fixes from David Miller: 1) Fix several bpfilter/UMH bugs, in particular make the UMH build not depend upon X86 specific Kconfig symbols. From Alexei Starovoitov. 2) Fix handling of modified context pointer in bpf verifier, from Daniel Borkmann. 3) Kill regression in ifdown/ifup sequences for hv_netvsc driver, from Dexuan Cui. 4) When the bonding primary member name changes, we have to re-evaluate the bond->force_primary setting, from Xiangning Yu. 5) Eliminate possible padding beyone end of SKB in cdc_ncm driver, from Bjørn Mork. 6) RX queue length reported for UDP sockets in procfs and socket diag are inaccurate, from Paolo Abeni. 7) Fix br_fdb_find_port() locking, from Petr Machata. 8) Limit sk_rcvlowat values properly in TCP, from Soheil Hassas Yeganeh. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (23 commits) tcp: limit sk_rcvlowat by the maximum receive buffer net: phy: dp83822: use BMCR_ANENABLE instead of BMSR_ANEGCAPABLE for DP83620 socket: close race condition between sock_close() and sockfs_setattr() net: bridge: Fix locking in br_fdb_find_port() udp: fix rx queue len reported by diag and proc interface cdc_ncm: avoid padding beyond end of skb net/sched: act_simple: fix parsing of TCA_DEF_DATA net: fddi: fix a possible null-ptr-deref net: aquantia: fix unsigned numvecs comparison with less than zero net: stmmac: fix build failure due to missing COMMON_CLK dependency bpfilter: fix race in pipe access bpf, xdp: fix crash in xdp_umem_unaccount_pages xsk: Fix umem fill/completion queue mmap on 32-bit tools/bpf: fix selftest get_cgroup_id_user bpfilter: fix OUTPUT_FORMAT umh: fix race condition net: mscc: ocelot: Fix uninitialized error in ocelot_netdevice_event() bonding: re-evaluate force_primary when the primary slave name changes ip_tunnel: Fix name string concatenate in __ip_tunnel_create() hv_netvsc: Fix a network regression after ifdown/ifup ...
| * | | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller2018-06-073-4/+80
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Daniel Borkmann says: ==================== pull-request: bpf 2018-06-08 The following pull-request contains BPF updates for your *net* tree. The main changes are: 1) Fix in the BPF verifier to reject modified ctx pointers on helper functions, from Daniel. 2) Fix in BPF kselftests for get_cgroup_id_user() helper to only record the cgroup id for a provided pid in order to reduce test failures from processes interferring with the test, from Yonghong. 3) Fix a crash in AF_XDP's mem accounting when the process owning the sock has CAP_IPC_LOCK capabilities set, from Daniel. 4) Fix an issue for AF_XDP on 32 bit machines where XDP_UMEM_PGOFF_*_RING defines need ULL suffixes and use loff_t type as they are otherwise truncated, from Geert. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | | | | tools/bpf: fix selftest get_cgroup_id_userYonghong Song2018-06-082-3/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit f269099a7e7a ("tools/bpf: add a selftest for bpf_get_current_cgroup_id() helper") added a test for bpf_get_current_cgroup_id() helper. The bpf program is attached to tracepoint syscalls/sys_enter_nanosleep and will record the cgroup id if the tracepoint is hit. The test program creates a cgroup and attachs itself to this cgroup and expects that the test program process cgroup id is the same as the cgroup_id retrieved by the bpf program. In a light system where no other processes called nanosleep syscall, the test case can pass. In a busy system where many different processes can hit syscalls/sys_enter_nanosleep tracepoint, the cgroup id recorded by bpf program may not match the test program process cgroup_id. This patch fixed an issue by communicating the test program pid to bpf program. The bpf program only records cgroup id if the current task pid is the same as passed-in pid. This ensures that the recorded cgroup_id is for the cgroup within which the test program resides. Fixes: f269099a7e7a ("tools/bpf: add a selftest for bpf_get_current_cgroup_id() helper") Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
| | * | | | | bpf: reject passing modified ctx to helper functionsDaniel Borkmann2018-06-071-1/+57
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | As commit 28e33f9d78ee ("bpf: disallow arithmetic operations on context pointer") already describes, f1174f77b50c ("bpf/verifier: rework value tracking") removed the specific white-listed cases we had previously where we would allow for pointer arithmetic in order to further generalize it, and allow e.g. context access via modified registers. While the dereferencing of modified context pointers had been forbidden through 28e33f9d78ee, syzkaller did recently manage to trigger several KASAN splats for slab out of bounds access and use after frees by simply passing a modified context pointer to a helper function which would then do the bad access since verifier allowed it in adjust_ptr_min_max_vals(). Rejecting arithmetic on ctx pointer in adjust_ptr_min_max_vals() generally could break existing programs as there's a valid use case in tracing in combination with passing the ctx to helpers as bpf_probe_read(), where the register then becomes unknown at verification time due to adding a non-constant offset to it. An access sequence may look like the following: offset = args->filename; /* field __data_loc filename */ bpf_probe_read(&dst, len, (char *)args + offset); // args is ctx There are two options: i) we could special case the ctx and as soon as we add a constant or bounded offset to it (hence ctx type wouldn't change) we could turn the ctx into an unknown scalar, or ii) we generalize the sanity test for ctx member access into a small helper and assert it on the ctx register that was passed as a function argument. Fwiw, latter is more obvious and less complex at the same time, and one case that may potentially be legitimate in future for ctx member access at least would be for ctx to carry a const offset. Therefore, fix follows approach from ii) and adds test cases to BPF kselftests. Fixes: f1174f77b50c ("bpf/verifier: rework value tracking") Reported-by: syzbot+3d0b2441dbb71751615e@syzkaller.appspotmail.com Reported-by: syzbot+c8504affd4fdd0c1b626@syzkaller.appspotmail.com Reported-by: syzbot+e5190cb881d8660fb1a3@syzkaller.appspotmail.com Reported-by: syzbot+efae31b384d5badbd620@syzkaller.appspotmail.com Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Yonghong Song <yhs@fb.com> Acked-by: Edward Cree <ecree@solarflare.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org>
* | | | | | | Merge branch 'core-rseq-for-linus' of ↵Linus Torvalds2018-06-1014-0/+4637
|\ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull restartable sequence support from Thomas Gleixner: "The restartable sequences syscall (finally): After a lot of back and forth discussion and massive delays caused by the speculative distraction of maintainers, the core set of restartable sequences has finally reached a consensus. It comes with the basic non disputed core implementation along with support for arm, powerpc and x86 and a full set of selftests It was exposed to linux-next earlier this week, so it does not fully comply with the merge window requirements, but there is really no point to drag it out for yet another cycle" * 'core-rseq-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: rseq/selftests: Provide Makefile, scripts, gitignore rseq/selftests: Provide parametrized tests rseq/selftests: Provide basic percpu ops test rseq/selftests: Provide basic test rseq/selftests: Provide rseq library selftests/lib.mk: Introduce OVERRIDE_TARGETS powerpc: Wire up restartable sequences system call powerpc: Add syscall detection for restartable sequences powerpc: Add support for restartable sequences x86: Wire up restartable sequence system call x86: Add support for restartable sequences arm: Wire up restartable sequences system call arm: Add syscall detection for restartable sequences arm: Add restartable sequences support rseq: Introduce restartable sequences system call uapi/headers: Provide types_32_64.h
| * | | | | | | rseq/selftests: Provide Makefile, scripts, gitignoreMathieu Desnoyers2018-06-064-0/+158
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A run_param_test.sh script runs many variants of the parametrizable tests. Wire up the rseq Makefile, add directory entry into MAINTAINERS file. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Joel Fernandes <joelaf@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dave Watson <davejwatson@fb.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Shuah Khan <shuahkh@osg.samsung.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: linux-kselftest@vger.kernel.org Cc: "H . Peter Anvin" <hpa@zytor.com> Cc: Chris Lameter <cl@linux.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Andrew Hunter <ahh@google.com> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: "Paul E . McKenney" <paulmck@linux.vnet.ibm.com> Cc: Paul Turner <pjt@google.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Ben Maurer <bmaurer@fb.com> Cc: linux-api@vger.kernel.org Cc: Andy Lutomirski <luto@amacapital.net> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lkml.kernel.org/r/20180602124408.8430-17-mathieu.desnoyers@efficios.com
| * | | | | | | rseq/selftests: Provide parametrized testsMathieu Desnoyers2018-06-061-0/+1260
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "param_test" is a parametrizable restartable sequences test. See the "--help" output for usage. "param_test_benchmark" is the same as "param_test", but it removes testing book-keeping code to allow accurate benchmarks. "param_test_compare_twice" is the same as "param_test", but it performs each comparison within rseq critical section twice, thus validating invariants. If any of the second comparisons fails, an error message is printed and the test aborts. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Joel Fernandes <joelaf@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dave Watson <davejwatson@fb.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Shuah Khan <shuahkh@osg.samsung.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: linux-kselftest@vger.kernel.org Cc: "H . Peter Anvin" <hpa@zytor.com> Cc: Chris Lameter <cl@linux.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Andrew Hunter <ahh@google.com> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: "Paul E . McKenney" <paulmck@linux.vnet.ibm.com> Cc: Paul Turner <pjt@google.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Ben Maurer <bmaurer@fb.com> Cc: linux-api@vger.kernel.org Cc: Andy Lutomirski <luto@amacapital.net> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lkml.kernel.org/r/20180602124408.8430-16-mathieu.desnoyers@efficios.com
| * | | | | | | rseq/selftests: Provide basic percpu ops testMathieu Desnoyers2018-06-061-0/+312
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "basic_percpu_ops_test" is a slightly more "realistic" variant, implementing a few simple per-cpu operations and testing their correctness. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Joel Fernandes <joelaf@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dave Watson <davejwatson@fb.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Shuah Khan <shuahkh@osg.samsung.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: linux-kselftest@vger.kernel.org Cc: "H . Peter Anvin" <hpa@zytor.com> Cc: Chris Lameter <cl@linux.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Andrew Hunter <ahh@google.com> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: "Paul E . McKenney" <paulmck@linux.vnet.ibm.com> Cc: Paul Turner <pjt@google.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Ben Maurer <bmaurer@fb.com> Cc: linux-api@vger.kernel.org Cc: Andy Lutomirski <luto@amacapital.net> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lkml.kernel.org/r/20180602124408.8430-15-mathieu.desnoyers@efficios.com
| * | | | | | | rseq/selftests: Provide basic testMathieu Desnoyers2018-06-061-0/+56
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "basic_test" only asserts that RSEQ works moderately correctly. E.g. that the CPUID pointer works. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Joel Fernandes <joelaf@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dave Watson <davejwatson@fb.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Shuah Khan <shuahkh@osg.samsung.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: linux-kselftest@vger.kernel.org Cc: "H . Peter Anvin" <hpa@zytor.com> Cc: Chris Lameter <cl@linux.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Andrew Hunter <ahh@google.com> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: "Paul E . McKenney" <paulmck@linux.vnet.ibm.com> Cc: Paul Turner <pjt@google.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Ben Maurer <bmaurer@fb.com> Cc: linux-api@vger.kernel.org Cc: Andy Lutomirski <luto@amacapital.net> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lkml.kernel.org/r/20180602124408.8430-14-mathieu.desnoyers@efficios.com
| * | | | | | | rseq/selftests: Provide rseq libraryMathieu Desnoyers2018-06-066-0/+2847
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This rseq helper library provides a user-space API to the rseq() system call. The rseq fast-path exposes the instruction pointer addresses where the rseq assembly blocks begin and end, as well as the associated abort instruction pointer, in the __rseq_table section. This section allows debuggers may know where to place breakpoints when single-stepping through assembly blocks which may be aborted at any point by the kernel. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Cc: Joel Fernandes <joelaf@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dave Watson <davejwatson@fb.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Shuah Khan <shuahkh@osg.samsung.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: linux-kselftest@vger.kernel.org Cc: "H . Peter Anvin" <hpa@zytor.com> Cc: Chris Lameter <cl@linux.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Andrew Hunter <ahh@google.com> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: "Paul E . McKenney" <paulmck@linux.vnet.ibm.com> Cc: Paul Turner <pjt@google.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Ben Maurer <bmaurer@fb.com> Cc: linux-api@vger.kernel.org Cc: Andy Lutomirski <luto@amacapital.net> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lkml.kernel.org/r/20180602124408.8430-13-mathieu.desnoyers@efficios.com
| * | | | | | | selftests/lib.mk: Introduce OVERRIDE_TARGETSMathieu Desnoyers2018-06-061-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce OVERRIDE_TARGETS to allow tests to express dependencies on header files and .so, which require to override the selftests lib.mk targets. Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Shuah Khan <shuahkh@osg.samsung.com> Cc: Joel Fernandes <joelaf@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Dave Watson <davejwatson@fb.com> Cc: Will Deacon <will.deacon@arm.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: linux-kselftest@vger.kernel.org Cc: "H . Peter Anvin" <hpa@zytor.com> Cc: Chris Lameter <cl@linux.com> Cc: Russell King <linux@arm.linux.org.uk> Cc: Andrew Hunter <ahh@google.com> Cc: Michael Kerrisk <mtk.manpages@gmail.com> Cc: "Paul E . McKenney" <paulmck@linux.vnet.ibm.com> Cc: Paul Turner <pjt@google.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Josh Triplett <josh@joshtriplett.org> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Ben Maurer <bmaurer@fb.com> Cc: linux-api@vger.kernel.org Cc: Andy Lutomirski <luto@amacapital.net> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Link: https://lkml.kernel.org/r/20180602124408.8430-12-mathieu.desnoyers@efficios.com
* | | | | | | | Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds2018-06-1059-427/+998
|\ \ \ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull more perf tooling updates from Thomas Gleixner: "Perf tool updates and fixes: perf stat: - Display user and system time for workload targets (Jiri Olsa) perf record: - Enable arbitrary event names thru name= modifier (Alexey Budankov) PowerPC: - Add a python script for hypervisor call statistics (Ravi Bangoria) Intel PT: (Adrian Hunter) - Fix sync_switch INTEL_PT_SS_NOT_TRACING - Fix decoding to accept CBR between FUP and corresponding TIP - Fix MTC timing after overflow - Fix "Unexpected indirect branch" error perf test: - record+probe_libc_inet_pton: - To get the symbol table for dynamic shared objects on ubuntu we need to pass the -D/--dynamic command line option, unlike with the fedora distros (Arnaldo Carvalho de Melo) - code-reading: - Fix perf_env setup for PTI entry trampolines (Adrian Hunter) - kmod-path: - Add tests for vdso32 and vdsox32 (Adrian Hunter) - Use header file util/debug.h (Thomas Richter) perf annotate: - Make the various UI backends (stdio, TUI, gtk) use more consistently structs with annotation options as specified by the user (Arnaldo Carvalho de Melo) - Move annotation specific knobs from the symbol_conf global kitchen sink to the annotation option structs (Arnaldo Carvalho de Melo) perf script: - Add more PMU fields to python scripts event handler dict (Jin Yao) Core: - Fix misleading error for some unparsable events mentioning PMUs when those are not involved in the problem (Jiri Olsa) - Consider BSS symbols when processing /proc/kallsyms ('B' and 'b') (Arnaldo Carvalho de Melo) - Be more robust when trying to use per-symbol histograms, checking for unlikely but possible cases where the space for the histograms wasn't allocated, print a debug message for such cases (Arnaldo Carvalho de Melo) - Fix symbol and object code resolution for vdso32 and vdsox32 (Adrian Hunter) - No need to check for null when passing pointers to foo__get() style refcount grabbing helpers, just like in the kernel and with free(), its safe to pass a NULL pointer to avoid having to check it before each and every foo__get() call (Arnaldo Carvalho de Melo) - Remove some dead code (quote.[ch]) (Arnaldo Carvalho de Melo) - Remove some needless globals, making them local (Arnaldo Carvalho de Melo) - Reduce usage of symbol_conf.use_callchain, using other means of finding out if callchains are in use or available for specific events, as we evolved this codebase to allow requesting callchains for just a subset of the monitored events. In time it will help polish recording and showing mixed sets accross the various tools: perf record -e cycles/call-graph=fp/,cache-misses/call-graph=dwarf/,instructions' (Arnaldo Carvalho de Melo) - Consider PTI entry trampolines in map__rip_2objdump() (Adrian Hunter)" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (50 commits) perf script python: Add dict fields introduction to Documentation perf script python: Add more PMU fields to event handler dict perf script python: Move dsoname code to a new function perf symbols: Add BSS symbols when reading from /proc/kallsyms perf annnotate: Make __symbol__inc_addr_samples handle src->histograms == NULL perf intel-pt: Fix "Unexpected indirect branch" error perf intel-pt: Fix MTC timing after overflow perf intel-pt: Fix decoding to accept CBR between FUP and corresponding TIP perf intel-pt: Fix sync_switch INTEL_PT_SS_NOT_TRACING perf script powerpc: Python script for hypervisor call statistics perf test record+probe_libc_inet_pton: Ask 'nm' for dynamic symbols perf map: Consider PTI entry trampolines in rip_2objdump() perf test code-reading: Fix perf_env setup for PTI entry trampolines perf tools: Fix pmu events parsing rule perf stat: Display user and system time perf record: Enable arbitrary event names thru name= modifier perf tools: Fix symbol and object code resolution for vdso32 and vdsox32 perf tests kmod-path: Add tests for vdso32 and vdsox32 perf hists: Check if a hist_entry has callchains before using them perf hists: Introduce hist_entry__has_callchain() method ...
| * \ \ \ \ \ \ \ Merge tag 'perf-core-for-mingo-4.18-20180606' of ↵Ingo Molnar2018-06-0759-427/+998
| |\ \ \ \ \ \ \ \ | | |/ / / / / / / | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: perf stat: - Display user and system time for workload targets (Jiri Olsa) perf record: - Enable arbitrary event names thru name= modifier (Alexey Budankov) PowerPC: - Add a python script for hypervisor call statistics (Ravi Bangoria) Intel PT: (Adrian Hunter) - Fix sync_switch INTEL_PT_SS_NOT_TRACING - Fix decoding to accept CBR between FUP and corresponding TIP - Fix MTC timing after overflow - Fix "Unexpected indirect branch" error perf test: - record+probe_libc_inet_pton: - To get the symbol table for dynamic shared objects on ubuntu we need to pass the -D/--dynamic command line option, unlike with the fedora distros (Arnaldo Carvalho de Melo) - code-reading: - Fix perf_env setup for PTI entry trampolines (Adrian Hunter) - kmod-path: - Add tests for vdso32 and vdsox32 (Adrian Hunter) - Use header file util/debug.h (Thomas Richter) perf annotate: - Make the various UI backends (stdio, TUI, gtk) use more consistently structs with annotation options as specified by the user (Arnaldo Carvalho de Melo) - Move annotation specific knobs from the symbol_conf global kitchen sink to the annotation option structs (Arnaldo Carvalho de Melo) perf script: - Add more PMU fields to python scripts event handler dict (Jin Yao) Core: - Fix misleading error for some unparsable events mentioning PMUs when those are not involved in the problem (Jiri Olsa) - Consider BSS symbols when processing /proc/kallsyms ('B' and 'b') (Arnaldo Carvalho de Melo) - Be more robust when trying to use per-symbol histograms, checking for unlikely but possible cases where the space for the histograms wasn't allocated, print a debug message for such cases (Arnaldo Carvalho de Melo) - Fix symbol and object code resolution for vdso32 and vdsox32 (Adrian Hunter) - No need to check for null when passing pointers to foo__get() style refcount grabbing helpers, just like in the kernel and with free(), its safe to pass a NULL pointer to avoid having to check it before each and every foo__get() call (Arnaldo Carvalho de Melo) - Remove some dead code (quote.[ch]) (Arnaldo Carvalho de Melo) - Remove some needless globals, making them local (Arnaldo Carvalho de Melo) - Reduce usage of symbol_conf.use_callchain, using other means of finding out if callchains are in use or available for specific events, as we evolved this codebase to allow requesting callchains for just a subset of the monitored events. In time it will help polish recording and showing mixed sets accross the various tools: perf record -e cycles/call-graph=fp/,cache-misses/call-graph=dwarf/,instructions' (Arnaldo Carvalho de Melo) - Consider PTI entry trampolines in map__rip_2objdump() (Adrian Hunter) Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
| | * | | | | | | perf script python: Add dict fields introduction to DocumentationJin Yao2018-06-061-0/+26
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a brief introduction about fields to perf-script-python.txt. It should help python script developers in easily finding what fields are supported. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1527843663-32288-4-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * | | | | | | perf script python: Add more PMU fields to event handler dictJin Yao2018-06-061-1/+226
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When doing pmu sampling and then running a script with perf script -s script.py, the process_event function gets dictionary with some fields from the perf ring buffer (like ip, sym, callchain etc). But we miss quite a few fields we report now, for example, LBRs, data source, weight, transaction, iregs, uregs, etc. This patch reports these fields for perf script python processing. New keys/items: --------------- key : brstack items: from, to, from_dsoname, to_dsoname, mispred, predicted, in_tx, abort, cycles. key : brstacksym items: from, to, pred, in_tx, abort (converted string) key : datasrc key : datasrc_decode (decoded string) key : iregs key : uregs key : weight key : transaction v2: --- Add new fields for dso. Use PyBool_FromLong() for mispred/predicted/in_tx/abort Committer notes: !sym->name isn't valid, as its not a pointer, its a [0] array, use !sym->name[0] instead, guaranteed to be the case by symbol__new. This was caught by just one of the containers: 52 54.22 ubuntu:17.04 : FAIL gcc (Ubuntu 6.3.0-12ubuntu2) 6.3.0 20170406 CC /tmp/build/perf/util/scripting-engines/trace-event-python.o util/scripting-engines/trace-event-python.c:534:20: error: address of array 'sym->name' will always evaluate to 'true' [-Werror,-Wpointer-bool-conversion] if (!sym || !sym->name) ~~~~~~^~~~ 1 error generated. mv: cannot stat '/tmp/build/perf/util/scripting-engines/.trace-event-python.o.tmp': No such file or directory /git/linux/tools/build/Makefile.build:96: recipe for target '/tmp/build/perf/util/scripting-engines/trace-event-python.o' failed make[5]: *** [/tmp/build/perf/util/scripting-engines/trace-event-python.o] Error 1 Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1527843663-32288-3-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * | | | | | | perf script python: Move dsoname code to a new functionJin Yao2018-06-061-8/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch creates a new function get_dsoname() and move the code which gets the dsoname string to this function. That's because in next patch, when we process LBR data, we will also need get_dsoname() to return dsoname for branch from/to. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/1527843663-32288-2-git-send-email-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * | | | | | | perf symbols: Add BSS symbols when reading from /proc/kallsymsArnaldo Carvalho de Melo2018-06-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We were not considering 'B' and 'b' (BSS, uninitialized data objects, that gets set to zero at program start), do it so that we can resolve more symbols in tools doing resolution of data operands, like 'perf c2c'. When using vmlinux, i.e. an ELF symbol table, those were already considered, as the decision was about STT_FUNC or STT_OBJECT, and the later covers BSS symbols. # grep -i ' b ' /proc/kallsyms | head -20 | tail -5 ffffffffa789d030 b execute_command ffffffffa789d038 b initcall_command_line ffffffffa789d040 b static_command_line ffffffffa789d048 B ROOT_DEV ffffffffa789d050 b once.73786 # # readelf -s /lib/modules/`uname -r`/build/vmlinux | grep ROOT_DEV 79219: ffffffff8289d048 4 OBJECT GLOBAL DEFAULT 58 ROOT_DEV # Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-z960xobig39ca1pmp5brl2fr@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * | | | | | | perf annnotate: Make __symbol__inc_addr_samples handle src->histograms == NULLArnaldo Carvalho de Melo2018-06-061-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Making it a bit more robust, this took place here when a sample appeared right after: ffffffff8a925000 D __nosave_end And before the next considered symbol, which, using kallsyms make us over guess the size of __nosave_end, and then the sequence: hist_entry__inc_addr_samples -> symbol__inc_addr_samples -> symbol__hists -> annotated_source__alloc_histograms Ends up not liking to allocate gigabytes of ram for annotation... This will be alleviated by considering BSS symbols, which we should but don't so far, and then we should investigate those samples further. The testcase was to have: perf top -e cycles/call-graph=fp/,cache-misses/call-graph=dwarf/,instructions Running for a while till it segfaulted trying to access NULL notes->src->histograms. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-ndfjtpiop3tdcnyjgp320ra8@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * | | | | | | perf intel-pt: Fix "Unexpected indirect branch" errorAdrian Hunter2018-06-063-2/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some Atom CPUs can produce FUP packets that contain NLIP (next linear instruction pointer) instead of CLIP (current linear instruction pointer). That will result in "Unexpected indirect branch" errors. Fix by comparing IP to NLIP in that case. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1527762225-26024-5-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * | | | | | | perf intel-pt: Fix MTC timing after overflowAdrian Hunter2018-06-061-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On some platforms, overflows will clear before MTC wraparound, and there is no following TSC/TMA packet. In that case the previous TMA is valid. Since there will be a valid TMA either way, stop setting 'have_tma' to false upon overflow. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1527762225-26024-4-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * | | | | | | perf intel-pt: Fix decoding to accept CBR between FUP and corresponding TIPAdrian Hunter2018-06-061-1/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It is possible to have a CBR packet between a FUP packet and corresponding TIP packet. Stop treating it as an error. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1527762225-26024-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * | | | | | | perf intel-pt: Fix sync_switch INTEL_PT_SS_NOT_TRACINGAdrian Hunter2018-06-061-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | sync_switch is a facility to synchronize decoding more closely with the point in the kernel when the context actually switched. In one case, INTEL_PT_SS_NOT_TRACING state was not correctly transitioning to INTEL_PT_SS_TRACING state due to a missing case clause. Add it. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: stable@vger.kernel.org Link: http://lkml.kernel.org/r/1527762225-26024-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * | | | | | | perf script powerpc: Python script for hypervisor call statisticsRavi Bangoria2018-06-063-0/+204
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add python script to show hypervisor call statistics. Ex, # perf record -a -e "{powerpc:hcall_entry,powerpc:hcall_exit}" # perf script -s scripts/python/powerpc-hcalls.py hcall count min(ns) max(ns) avg(ns) -------------------------------------------------------------------- H_RANDOM 82 838 1164 904 H_PUT_TCE 47 1078 5928 2003 H_EOI 266 1336 3546 1654 H_ENTER 28 1646 4038 1952 H_PUT_TCE_INDIRECT 230 2166 18168 6109 H_IPI 238 1072 3232 1688 H_SEND_LOGICAL_LAN 42 5488 21366 7694 H_STUFF_TCE 294 986 6210 3591 H_XIRR 266 2286 6990 3783 H_PROTECT 10 2196 3556 2555 H_VIO_SIGNAL 294 1028 2784 1311 H_ADD_LOGICAL_LAN_BUFFER 53 1978 3450 2600 H_SEND_CRQ 77 1762 7240 2447 Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Michael Ellerman <mpe@ellerman.id.au> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/20180605124801.17210-1-ravi.bangoria@linux.ibm.com [ Fixup typo: table_loockup -> table_lookup ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * | | | | | | perf test record+probe_libc_inet_pton: Ask 'nm' for dynamic symbolsArnaldo Carvalho de Melo2018-06-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adrian reported that this test fails in his system where: probe libc's inet_pton & backtrace it with ping: FAILED! root@kbl04:~/git/linux-perf# nm -g /lib/x86_64-linux-gnu/libc-2.19.so | grep inet_pton nm: /lib/x86_64-linux-gnu/libc-2.19.so: no symbols This fails on ubuntu systems, with Adrian's being kubuntu 14.04, I tested with ubuntu 14.04.4 and 18.04, and there we need to use the -D/--dynamic 'nm' option to have this test working. And it works as well with that on fedora 27, so use it. Reported-by: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Sandipan Das <sandipan@linux.vnet.ibm.com> Cc: Thomas Richter <tmricht@linux.ibm.com> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-zlfnbauad3ljlmtjgo0v660u@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * | | | | | | perf map: Consider PTI entry trampolines in rip_2objdump()Adrian Hunter2018-06-061-0/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | perf tools uses map__rip_2objdump() to calculate objdump virtual addresses. map__rip_2objdump() needs to be amended to deal with PTI entry trampolines. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1528183800-21577-1-git-send-email-adrian.hunter@intel.com [ split from a larger patch ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * | | | | | | perf test code-reading: Fix perf_env setup for PTI entry trampolinesAdrian Hunter2018-06-061-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The "Object code reading" test will not create maps for the PTI entry trampolines unless the machine environment exists to show that the arch is x86_64. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lkml.kernel.org/r/1528183800-21577-1-git-send-email-adrian.hunter@intel.com [ split from a larger patch ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * | | | | | | perf tools: Fix pmu events parsing ruleJiri Olsa2018-06-061-1/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently all the event parsing fails end up in the event_pmu rule, and display misleading help like: $ perf stat -e inst kill event syntax error: 'inst' \___ Cannot find PMU `inst'. Missing kernel support? ... The reason is that the event_pmu is too strong and match also single string. Changing it to force the '/' separators to be part of the rule, and getting the proper error now: $ perf stat -e inst kill event syntax error: 'inst' \___ parser error Run 'perf list' for a list of valid events ... Suggested-by: Adrian Hunter <adrian.hunter@intel.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180605121416.31645-1-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * | | | | | | perf stat: Display user and system timeJiri Olsa2018-06-062-12/+56
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adding the support to read rusage data once the workload is finished and display the system/user time values: $ perf stat --null perf bench sched pipe ... Performance counter stats for 'perf bench sched pipe': 5.342599256 seconds time elapsed 2.544434000 seconds user 4.549691000 seconds sys It works only in non -r mode and only for workload target. So as of now, for workload targets, we display 3 types of timings. The time we meassure in perf stat from enable to disable+period: 5.342599256 seconds time elapsed The time spent in user and system lands, displayed only for workload session/target: 2.544434000 seconds user 4.549691000 seconds sys Those times are the very same displayed by 'time' tool. They are returned by wait4 call via the getrusage struct interface. Committer notes: Had to rename some variables to avoid this on older systems such as centos:6: builtin-stat.c: In function 'print_footer': builtin-stat.c:1831: warning: declaration of 'stime' shadows a global declaration /usr/include/time.h:297: warning: shadowed declaration is here Committer testing: # perf stat --null time perf bench sched pipe # Running 'sched/pipe' benchmark: # Executed 1000000 pipe operations between two processes Total time: 5.526 [sec] 5.526534 usecs/op 180945 ops/sec 1.00user 6.25system 0:05.52elapsed 131%CPU (0avgtext+0avgdata 8056maxresident)k 0inputs+0outputs (0major+606minor)pagefaults 0swaps Performance counter stats for 'time perf bench sched pipe': 5.530978744 seconds time elapsed 1.004037000 seconds user 6.259937000 seconds sys # Suggested-by: Ingo Molnar <mingo@kernel.org> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20180605121313.31337-1-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * | | | | | | perf record: Enable arbitrary event names thru name= modifierAlexey Budankov2018-06-064-4/+43
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Enable complex event names containing [.:=,] symbols to be encoded into Perf trace using name= modifier e.g. like this: perf record -e cpu/name=\'OFFCORE_RESPONSE:request=DEMAND_RFO:response=L3_HIT.SNOOP_HITM\',\ period=0x3567e0,event=0x3c,cmask=0x1/Duk ./futex Below is how it looks like in the report output. Please note explicit escaped quoting at cmdline string in the header so that thestring can be directly reused for another collection in shell: perf report --header # ======== ... # cmdline : /root/abudanko/kernel/tip/tools/perf/perf record -v -e cpu/name=\'OFFCORE_RESPONSE:request=DEMAND_RFO:response=L3_HIT.SNOOP_HITM\',period=0x3567e0,event=0x3c,cmask=0x1/Duk ./futex # event : name = OFFCORE_RESPONSE:request=DEMAND_RFO:response=L3_HIT.SNOOP_HITM, , type = 4, size = 112, config = 0x100003c, { sample_period, sample_freq } = 3500000, sample_type = IP|TID|TIME, disabled = 1, inh ... # ======== # # # Total Lost Samples: 0 # # Samples: 24K of event 'OFFCORE_RESPONSE:request=DEMAND_RFO:response=L3_HIT.SNOOP_HITM' # Event count (approx.): 86492000000 # # Overhead Command Shared Object Symbol # ........ ....... ................ .............................................. # 14.75% futex [kernel.vmlinux] [k] __entry_trampoline_start ... perf stat -e cpu/name=\'CPU_CLK_UNHALTED.THREAD:cmask=0x1\',period=0x3567e0,event=0x3c,cmask=0x1/Duk ./futex 10000000 process context switches in 16678890291ns (1667.9ns/ctxsw) Performance counter stats for './futex': 88,095,770,571 CPU_CLK_UNHALTED.THREAD:cmask=0x1 16.679542407 seconds time elapsed Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/c194b060-761d-0d50-3b21-bb4ed680002d@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * | | | | | | perf tools: Fix symbol and object code resolution for vdso32 and vdsox32Adrian Hunter2018-06-061-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix __kmod_path__parse() so that perf tools does not treat vdso32 and vdsox32 as kernel modules and fail to find the object. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Wang Nan <wangnan0@huawei.com> Cc: stable@vger.kernel.org Fixes: 1f121b03d058 ("perf tools: Deal with kernel module names in '[]' correctly") Link: http://lkml.kernel.org/r/1528117014-30032-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * | | | | | | perf tests kmod-path: Add tests for vdso32 and vdsox32Adrian Hunter2018-06-061-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add tests for vdso32 and vdsox32. This will cause the overall test to fail because __kmod_path__parse() does not handle vdso32 or vdsox32. Fixes: 1f121b03d058 ("perf tools: Deal with kernel module names in '[]' correctly") Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/r/1528117014-30032-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * | | | | | | perf hists: Check if a hist_entry has callchains before using themArnaldo Carvalho de Melo2018-06-067-17/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | So far if we use 'perf record -g' this will make symbol_conf.use_callchain 'true' and logic will assume that all events have callchains enabled, but ever since we added the possibility of setting up callchains for some events (e.g.: -e cycles/call-graph=dwarf/) while not for others, we limit usage scenarios by looking at that symbol_conf.use_callchain global boolean, we better look at each event attributes. On the road to that we need to look if a hist_entry has callchains, that is, to go from hist_entry->hists to the evsel that contains it, to then look at evsel->sample_type for PERF_SAMPLE_CALLCHAIN. The next step is to add a symbol_conf.ignore_callchains global, to use in the places where what we really want to know is if callchains should be ignored, even if present. Then -g will mean just to select a callchain mode to be applied to all events not explicitely setting some other callchain mode, i.e. a default callchain mode, and --no-call-graph will set symbol_conf.ignore_callchains with that clear intention. That too will at some point become a per evsel thing, that tools can set for all or just a few of its evsels. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-0sas5cm4dsw2obn75g7ruz69@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * | | | | | | perf hists: Introduce hist_entry__has_callchain() methodArnaldo Carvalho de Melo2018-06-061-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We'll use this helper more frequently when reworking symbol_conf.use_callchain logic, where knowing if a hist_entry has callchains is the important bit, so make going from hist_entry to hists to evsel easier, compact. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-p6gioxkzpkpz71dtt4wcs36o@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * | | | | | | perf sched: Use sched->show_callchain where appropriateArnaldo Carvalho de Melo2018-06-051-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of using symbol_conf.use_callchain, reducing its usage a bit more. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-edgwb1b2mpbrdeg0w64wp7ms@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * | | | | | | perf script: Check if evsel has callchains before trying to use itArnaldo Carvalho de Melo2018-06-051-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We were checking just if callchain processing was asked for by the user, not if the evsel itself has callchains, and since we can have some evsels with callchains and others without, check that. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-inxl7k49q9f9w1se039fbxuw@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>