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* pwm: visconti: Simplify using devm_pwmchip_add()zhaoxiao2021-11-051-13/+1
| | | | | | | | | This allows to drop the platform_driver's remove function. This is the only user of driver data so this can go away, too. Signed-off-by: zhaoxiao <long870912@gmail.com> Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: samsung: Describe driver in KconfigKrzysztof Kozlowski2021-11-051-1/+3
| | | | | | | | | Describe better which driver applies to which SoC, to make configuring kernel for Samsung SoC easier. Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Make it explicit that pwm_apply_state() might sleepUwe Kleine-König2021-11-052-0/+13
| | | | | | | | | | | At least some implementations sleep. So mark pwm_apply_state() with a might_sleep() to make callers aware. In the worst case this uncovers a valid atomic user, then we revert this patch and at least gained some more knowledge and then can work on a concept similar to gpio_get_value/gpio_get_value_cansleep. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: Add might_sleep() annotations for !CONFIG_PWM API functionsUwe Kleine-König2021-11-051-0/+9
| | | | | | | | | The normal implementations of these functions make use of mutexes. To make it obvious that these functions might sleep also add annotations to the dummy implementations in the !CONFIG_PWM case. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* pwm: atmel: Drop unused headerUwe Kleine-König2021-11-051-1/+0
| | | | | | | | | | | Since commit 52eaba4cedbd ("pwm: atmel: Rework tracking updates pending in hardware") the driver doesn't make use of mutexes any more, so the header defining these doesn't need to be included. Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com> Acked-by: Claudiu Beznea <claudiu.beznea@microchip.com> Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
* Linux 5.15-rc1v5.15-rc1Linus Torvalds2021-09-121-2/+2
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* Merge tag 'perf-tools-for-v5.15-2021-09-11' of ↵Linus Torvalds2021-09-1236-175/+1147
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux Pull more perf tools updates from Arnaldo Carvalho de Melo: - Add missing fields and remove some duplicate fields when printing a perf_event_attr. - Fix hybrid config terms list corruption. - Update kernel header copies, some resulted in new kernel features being automagically added to 'perf trace' syscall/tracepoint argument id->string translators. - Add a file generated during the documentation build to .gitignore. - Add an option to build without libbfd, as some distros, like Debian consider its ABI unstable. - Add support to print a textual representation of IBS raw sample data in 'perf report'. - Fix bpf 'perf test' sample mismatch reporting - Fix passing arguments to stackcollapse report in a 'perf script' python script. - Allow build-id with trailing zeros. - Look for ImageBase in PE file to compute .text offset. * tag 'perf-tools-for-v5.15-2021-09-11' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (25 commits) tools headers UAPI: Update tools's copy of drm.h headers tools headers UAPI: Sync drm/i915_drm.h with the kernel sources tools headers UAPI: Sync linux/fs.h with the kernel sources tools headers UAPI: Sync linux/in.h copy with the kernel sources perf tools: Add an option to build without libbfd perf tools: Allow build-id with trailing zeros perf tools: Fix hybrid config terms list corruption perf tools: Factor out copy_config_terms() and free_config_terms() perf tools: Fix perf_event_attr__fprintf() missing/dupl. fields perf tools: Ignore Documentation dependency file perf bpf: Provide a weak btf__load_from_kernel_by_id() for older libbpf versions tools include UAPI: Update linux/mount.h copy perf beauty: Cover more flags in the move_mount syscall argument beautifier tools headers UAPI: Sync linux/prctl.h with the kernel sources tools include UAPI: Sync sound/asound.h copy with the kernel sources tools headers UAPI: Sync linux/kvm.h with the kernel sources tools headers UAPI: Sync x86's asm/kvm.h with the kernel sources perf report: Add support to print a textual representation of IBS raw sample data perf report: Add tools/arch/x86/include/asm/amd-ibs.h perf env: Add perf_env__cpuid, perf_env__{nr_}pmu_mappings ...
| * tools headers UAPI: Update tools's copy of drm.h headersArnaldo Carvalho de Melo2021-09-111-2/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Picking the changes from: 17ce9c61c71cbc0d ("drm: document DRM_IOCTL_MODE_RMFB") Doesn't result in any tooling changes: $ tools/perf/trace/beauty/drm_ioctl.sh > before $ cp include/uapi/drm/drm.h tools/include/uapi/drm/drm.h $ tools/perf/trace/beauty/drm_ioctl.sh > after $ diff -u before after Silencing these perf build warnings: Warning: Kernel ABI header at 'tools/include/uapi/drm/drm.h' differs from latest version at 'include/uapi/drm/drm.h' diff -u tools/include/uapi/drm/drm.h include/uapi/drm/drm.h Cc: Simon Ser <contact@emersion.fr> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * tools headers UAPI: Sync drm/i915_drm.h with the kernel sourcesArnaldo Carvalho de Melo2021-09-111-81/+417
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To pick the changes in: b65a9489730a2494 ("drm/i915/userptr: Probe existence of backing struct pages upon creation") ee242ca704d38699 ("drm/i915/guc: Implement GuC priority management") 81340cf3bddded4f ("drm/i915/uapi: reject set_domain for discrete") 7961c5b60f23dff5 ("drm/i915: Add TTM offset argument to mmap.") aef7b67a79564f6c ("drm/i915/uapi: convert drm_i915_gem_userptr to kernel doc") e7737b67ab46ee0e ("drm/i915/uapi: reject caching ioctls for discrete") 3aa8c57fe25a9247 ("drm/i915/uapi: convert drm_i915_gem_set_domain to kernel doc") 289f5a72009b8f67 ("drm/i915/uapi: convert drm_i915_gem_caching to kernel doc") 4a766ae40ec83301 ("drm/i915: Drop the CONTEXT_CLONE API (v2)") 6ff6d61dd2a943bd ("drm/i915: Drop I915_CONTEXT_PARAM_NO_ZEROMAP") fe4751c3d513ff4f ("drm/i915: Drop I915_CONTEXT_PARAM_RINGSIZE") 577729533cdc4e37 ("drm/i915: Document the Virtual Engine uAPI") c649432e86ca677d ("drm/i915: Fix busy ioctl commentary") That doesn't result in any changes to tooling as no new ioctl were added (at least not perceived by tools/perf/trace/beauty/drm_ioctl.sh). Addressing this perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/drm/i915_drm.h' differs from latest version at 'include/uapi/drm/i915_drm.h' diff -u tools/include/uapi/drm/i915_drm.h include/uapi/drm/i915_drm.h Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Jason Ekstrand <jason@jlekstrand.net> Cc: John Harrison <John.C.Harrison@Intel.com> Cc: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Cc: Matthew Auld <matthew.auld@intel.com> Cc: Matthew Brost <matthew.brost@intel.com> Cc: Tvrtko Ursulin <tvrtko.ursulin@intel.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * tools headers UAPI: Sync linux/fs.h with the kernel sourcesArnaldo Carvalho de Melo2021-09-111-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To pick the change in: 7957d93bf32bc211 ("block: add ioctl to read the disk sequence number") It adds a new ioctl, but we are still not using that to generate tables for 'perf trace', so no changes in tooling. This silences this perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/linux/fs.h' differs from latest version at 'include/uapi/linux/fs.h' diff -u tools/include/uapi/linux/fs.h include/uapi/linux/fs.h Cc: Jens Axboe <axboe@kernel.dk> Cc: Matteo Croce <mcroce@microsoft.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * tools headers UAPI: Sync linux/in.h copy with the kernel sourcesArnaldo Carvalho de Melo2021-09-111-10/+32
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To pick the changes in: db243b796439c0ca ("net/ipv4/ipv6: Replace one-element arraya with flexible-array members") 2d3e5caf96b9449a ("net/ipv4: Replace one-element array with flexible-array member") That don't result in any change in tooling, the structs changed remains with the same layout. This addresses this build warning: Warning: Kernel ABI header at 'tools/include/uapi/linux/in.h' differs from latest version at 'include/uapi/linux/in.h' diff -u tools/include/uapi/linux/in.h include/uapi/linux/in.h Cc: David S. Miller <davem@davemloft.net> Cc: Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Add an option to build without libbfdIan Rogers2021-09-111-22/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Some distributions, like debian, don't link perf with libbfd. Add a build flag to make this configuration buildable and testable. This was inspired by: https://lore.kernel.org/linux-perf-users/20210910102307.2055484-1-tonyg@leastfixedpoint.com/T/#u Signed-off-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: tony garnock-jones <tonyg@leastfixedpoint.com> Link: http://lore.kernel.org/lkml/20210910225756.729087-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Allow build-id with trailing zerosNamhyung Kim2021-09-111-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently perf saves a build-id with size but old versions assumes the size of 20. In case the build-id is less than 20 (like for MD5), it'd fill the rest with 0s. I saw a problem when old version of perf record saved a binary in the build-id cache and new version of perf reads the data. The symbols should be read from the build-id cache (as the path no longer has the same binary) but it failed due to mismatch in the build-id. symsrc__init: build id mismatch for /home/namhyung/.debug/.build-id/53/e4c2f42a4c61a2d632d92a72afa08f00000000/elf. The build-id event in the data has 20 byte build-ids, but it saw a different size (16) when it reads the build-id of the elf file in the build-id cache. $ readelf -n ~/.debug/.build-id/53/e4c2f42a4c61a2d632d92a72afa08f00000000/elf Displaying notes found in: .note.gnu.build-id Owner Data size Description GNU 0x00000010 NT_GNU_BUILD_ID (unique build ID bitstring) Build ID: 53e4c2f42a4c61a2d632d92a72afa08f Let's fix this by allowing trailing zeros if the size is different. Fixes: 39be8d0115b321ed ("perf tools: Pass build_id object to dso__build_id_equal()") Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210910224630.1084877-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Fix hybrid config terms list corruptionAdrian Hunter2021-09-112-9/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A config terms list was spliced twice, resulting in a never-ending loop when the list was traversed. Fix by using list_splice_init() and copying and freeing the lists as necessary. This patch also depends on patch "perf tools: Factor out copy_config_terms() and free_config_terms()" Example on ADL: Before: # perf record -e '{intel_pt//,cycles/aux-sample-size=4096/pp}' uname & # jobs [1]+ Running perf record -e "{intel_pt//,cycles/aux-sample-size=4096/pp}" uname # perf top -E 10 PerfTop: 4071 irqs/sec kernel: 6.9% exact: 100.0% lost: 0/0 drop: 0/0 [4000Hz cycles], (all, 24 CPUs) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- 97.60% perf [.] __evsel__get_config_term 0.25% [kernel] [k] kallsyms_expand_symbol.constprop.13 0.24% perf [.] kallsyms__parse 0.15% [kernel] [k] _raw_spin_lock 0.14% [kernel] [k] number 0.13% [kernel] [k] advance_transaction 0.08% [kernel] [k] format_decode 0.08% perf [.] map__process_kallsym_symbol 0.08% perf [.] rb_insert_color 0.08% [kernel] [k] vsnprintf exiting. # kill %1 After: # perf record -e '{intel_pt//,cycles/aux-sample-size=4096/pp}' uname & Linux [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.060 MB perf.data ] # perf script | head perf-exec 604 [001] 1827.312293: psb: psb offs: 0 ffffffffb8415e87 pt_config_start+0x37 ([kernel.kallsyms]) perf-exec 604 1827.312293: 1 branches: ffffffffb856a3bd event_sched_in.isra.133+0xfd ([kernel.kallsyms]) => ffffffffb856a9a0 perf_pmu_nop_void+0x0 ([kernel.kallsyms]) perf-exec 604 1827.312293: 1 branches: ffffffffb856b10e merge_sched_in+0x26e ([kernel.kallsyms]) => ffffffffb856a2c0 event_sched_in.isra.133+0x0 ([kernel.kallsyms]) perf-exec 604 1827.312293: 1 branches: ffffffffb856a45d event_sched_in.isra.133+0x19d ([kernel.kallsyms]) => ffffffffb8568b80 perf_event_set_state.part.61+0x0 ([kernel.kallsyms]) perf-exec 604 1827.312293: 1 branches: ffffffffb8568b86 perf_event_set_state.part.61+0x6 ([kernel.kallsyms]) => ffffffffb85662a0 perf_event_update_time+0x0 ([kernel.kallsyms]) perf-exec 604 1827.312293: 1 branches: ffffffffb856a35c event_sched_in.isra.133+0x9c ([kernel.kallsyms]) => ffffffffb8567610 perf_log_itrace_start+0x0 ([kernel.kallsyms]) perf-exec 604 1827.312293: 1 branches: ffffffffb856a377 event_sched_in.isra.133+0xb7 ([kernel.kallsyms]) => ffffffffb8403b40 x86_pmu_add+0x0 ([kernel.kallsyms]) perf-exec 604 1827.312293: 1 branches: ffffffffb8403b86 x86_pmu_add+0x46 ([kernel.kallsyms]) => ffffffffb8403940 collect_events+0x0 ([kernel.kallsyms]) perf-exec 604 1827.312293: 1 branches: ffffffffb8403a7b collect_events+0x13b ([kernel.kallsyms]) => ffffffffb8402cd0 collect_event+0x0 ([kernel.kallsyms]) Fixes: 30def61f64bac5 ("perf parse-events Create two hybrid cache events") Fixes: 94da591b1c7913 ("perf parse-events Create two hybrid raw events") Fixes: 9cbfa2f64c04d9 ("perf parse-events Create two hybrid hardware events") Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Link: https //lore.kernel.org/r/20210909125508.28693-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Factor out copy_config_terms() and free_config_terms()Adrian Hunter2021-09-113-13/+19
| | | | | | | | | | | | | | | | | | | | | | | | Factor out copy_config_terms() and free_config_terms() so that they can be reused. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Kan Liang <kan.liang@linux.intel.com> Link: https //lore.kernel.org/r/20210909125508.28693-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Fix perf_event_attr__fprintf() missing/dupl. fieldsAdrian Hunter2021-09-111-1/+4
| | | | | | | | | | | | | | | | | | Some fields are missing and text_poke is duplicated. Fix that up. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20210911120550.12203-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf tools: Ignore Documentation dependency fileIan Rogers2021-09-111-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When building directly on the checked out repository the build process produces a file that should be ignored, so add it to .gitignore. Fixes: a81df63a5df3e195 ("perf doc: Fix doc.dep") Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210910232249.739661-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf bpf: Provide a weak btf__load_from_kernel_by_id() for older libbpf versionsArnaldo Carvalho de Melo2021-09-101-0/+8
| | | | | | | | | | | | | | | | | | | | The btf__get_from_id() function was deprecated in favour of btf__load_from_kernel_by_id(), but it is still avaiable, so use it to provide a weak function btf__load_from_kernel_by_id() for older libbpf when building perf with LIBBPF_DYNAMIC=1, i.e. using the system's libbpf package. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * tools include UAPI: Update linux/mount.h copyArnaldo Carvalho de Melo2021-09-101-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To pick the changes from: 9ffb14ef61bab83f ("move_mount: allow to add a mount into an existing group") That ends up adding support for the new MOVE_MOUNT_SET_GROUP move_mount flag. $ tools/perf/trace/beauty/move_mount_flags.sh > before $ cp include/uapi/linux/mount.h tools/include/uapi/linux/mount.h $ tools/perf/trace/beauty/move_mount_flags.sh > after $ diff -u before after --- before 2021-09-10 12:28:43.865279808 -0300 +++ after 2021-09-10 12:28:50.183429184 -0300 @@ -5,4 +5,5 @@ [ilog2(0x00000010) + 1] = "T_SYMLINKS", [ilog2(0x00000020) + 1] = "T_AUTOMOUNTS", [ilog2(0x00000040) + 1] = "T_EMPTY_PATH", + [ilog2(0x00000100) + 1] = "SET_GROUP", }; $ So now one can use it in --filter expressions for tracepoints. This silences this perf build warnings: Warning: Kernel ABI header at 'tools/include/uapi/linux/mount.h' differs from latest version at 'include/uapi/linux/mount.h' diff -u tools/include/uapi/linux/mount.h include/uapi/linux/mount.h Cc: Christian Brauner <christian.brauner@ubuntu.com> Cc: Pavel Tikhomirov <ptikhomirov@virtuozzo.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf beauty: Cover more flags in the move_mount syscall argument beautifierArnaldo Carvalho de Melo2021-09-101-1/+1
| | | | | | | | | | | | | | | | | | | | Previously the regext expected MOVE_MOUNT_[FT]_*, but in the next patch a flag that doesn't match that expression will be added, MOVE_MOUNT_SET_GROUP To make this more future proof, take advantage of the fact that the only one we don't need to cover is MOVE_MOUNT__MASK and use MOVE_MOUNT_[^_]+_*_. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * tools headers UAPI: Sync linux/prctl.h with the kernel sourcesArnaldo Carvalho de Melo2021-09-101-5/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To pick the changes in: 433c38f40f6a81cf ("arm64: mte: change ASYNC and SYNC TCF settings into bitfields") e893bb1bb4d2eb63 ("x86, prctl: Hook L1D flushing in via prctl") That don't result in any changes in tooling: $ tools/perf/trace/beauty/prctl_option.sh > before $ cp include/uapi/linux/prctl.h tools/include/uapi/linux/prctl.h $ tools/perf/trace/beauty/prctl_option.sh > after $ diff -u before after $ Just silences this perf tools build warning: Warning: Kernel ABI header at 'tools/include/uapi/linux/prctl.h' differs from latest version at 'include/uapi/linux/prctl.h' diff -u tools/include/uapi/linux/prctl.h include/uapi/linux/prctl.h Cc: Balbir Singh <sblbir@amazon.com> Cc: Catalin Marinas <catalin.marinas@arm.com> Cc: Peter Collingbourne <pcc@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * tools include UAPI: Sync sound/asound.h copy with the kernel sourcesArnaldo Carvalho de Melo2021-09-101-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Picking the changes from: 81be10934949da8b ("ALSA: pcm: Add SNDRV_PCM_INFO_EXPLICIT_SYNC flag") Which entails no changes in the tooling side as it doesn't introduce new ioctls. To silence this perf tools build warning: Warning: Kernel ABI header at 'tools/include/uapi/sound/asound.h' differs from latest version at 'include/uapi/sound/asound.h' diff -u tools/include/uapi/sound/asound.h include/uapi/sound/asound.h Cc: Takashi Iwai <tiwai@suse.de> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * tools headers UAPI: Sync linux/kvm.h with the kernel sourcesArnaldo Carvalho de Melo2021-09-101-4/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To pick the changes in: f95937ccf5bd5e0a ("KVM: stats: Support linear and logarithmic histogram statistics") f0376edb1ddcab19 ("KVM: arm64: Add ioctl to fetch/store tags in a guest") ea7fc1bb1cd1b92b ("KVM: arm64: Introduce MTE VM feature") That just rebuilds perf, as these patches don't add any new KVM ioctl to be harvested for the the 'perf trace' ioctl syscall argument beautifiers. This is also by now used by tools/testing/selftests/kvm/, so that will pick the new KVM_STATS_TYPE_LINEAR_HIST and KVM_STATS_TYPE_LOG_HIST defines. This silences this perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/linux/kvm.h' differs from latest version at 'include/uapi/linux/kvm.h' diff -u tools/include/uapi/linux/kvm.h include/uapi/linux/kvm.h Cc: Jing Zhang <jingzhangos@google.com> Cc: Marc Zyngier <maz@kernel.org> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Steven Price <steven.price@arm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * tools headers UAPI: Sync x86's asm/kvm.h with the kernel sourcesArnaldo Carvalho de Melo2021-09-101-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To pick the changes in: 61e5f69ef08379cd ("KVM: x86: implement KVM_GUESTDBG_BLOCKIRQ") That just rebuilds kvm-stat.c on x86, no change in functionality. This silences these perf build warning: Warning: Kernel ABI header at 'tools/arch/x86/include/uapi/asm/kvm.h' differs from latest version at 'arch/x86/include/uapi/asm/kvm.h' diff -u tools/arch/x86/include/uapi/asm/kvm.h arch/x86/include/uapi/asm/kvm.h Cc: Maxim Levitsky <mlevitsk@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf report: Add support to print a textual representation of IBS raw sample ↵Kim Phillips2021-09-104-1/+303
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | data Perf records IBS (Instruction Based Sampling) extra sample data when 'perf record --raw-samples' is used with an IBS-compatible event, on a machine that supports IBS. IBS support is indicated in CPUID_Fn80000001_ECX bit #10. Up until now, users have been able to see the extra sample data solely in raw hex format using 'perf report --dump-raw-trace'. From there, users could decode the data either manually, or by using an external script. Enable the built-in 'perf report --dump-raw-trace' to do the decoding of the extra sample data bits, so manual or external script decoding isn't necessary. Example usage: $ sudo perf record -c 10000001 -a --raw-samples -e ibs_fetch/rand_en=1/,ibs_op/cnt_ctl=1/ -C 0,1 taskset -c 0,1 7za b -mmt2 | perf report --dump-raw-trace Stdout contains IBS Fetch samples, e.g.: ibs_fetch_ctl: 02170007ffffffff MaxCnt 1048560 Cnt 1048560 Lat 7 En 1 Val 1 Comp 1 IcMiss 0 PhyAddrValid 1 L1TlbPgSz 4KB L1TlbMiss 0 L2TlbMiss 0 RandEn 1 L2Miss 0 IbsFetchLinAd: 000056016b2ead40 IbsFetchPhysAd: 000000115cedfd40 c_ibs_ext_ctl: 0000000000000000 IbsItlbRefillLat 0 ..and IBS Op samples, e.g.: ibs_op_ctl: 0000009e009e8968 MaxCnt 10000000 En 1 Val 1 CntCtl 1=uOps CurCnt 158 IbsOpRip: 000056016b2ea73d ibs_op_data: 00000000000b0002 CompToRetCtr 2 TagToRetCtr 11 BrnRet 0 RipInvalid 0 BrnFuse 0 Microcode 0 ibs_op_data2: 0000000000000002 CacheHitSt 0=M-state RmtNode 0 DataSrc 2=Local node cache ibs_op_data3: 0000000000c60002 LdOp 0 StOp 1 DcL1TlbMiss 0 DcL2TlbMiss 0 DcL1TlbHit2M 0 DcL1TlbHit1G 0 DcL2TlbHit2M 0 DcMiss 0 DcMisAcc 0 DcWcMemAcc 0 DcUcMemAcc 0 DcLockedOp 0 DcMissNoMabAlloc 0 DcLinAddrValid 1 DcPhyAddrValid 1 DcL2TlbHit1G 0 L2Miss 0 SwPf 0 OpMemWidth 4 bytes OpDcMissOpenMemReqs 0 DcMissLat 0 TlbRefillLat 0 IbsDCLinAd: 00007f133c319ce0 IbsDCPhysAd: 0000000270485ce0 Committer notes: Fixed up this: util/amd-sample-raw.c: In function ‘evlist__amd_sample_raw’: util/amd-sample-raw.c:125:42: error: ‘ bytes’ directive output may be truncated writing 6 bytes into a region of size between 4 and 7 [-Werror=format-truncation=] 125 | " OpMemWidth %2d bytes", 1 << (reg.op_mem_width - 1)); | ^~~~~~ In file included from /usr/include/stdio.h:866, from util/amd-sample-raw.c:7: /usr/include/bits/stdio2.h:71:10: note: ‘__builtin___snprintf_chk’ output between 21 and 24 bytes into a destination of size 21 71 | return __builtin___snprintf_chk (__s, __n, __USE_FORTIFY_LEVEL - 1, | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 72 | __glibc_objsize (__s), __fmt, | ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 73 | __va_arg_pack ()); | ~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors As that %2d won't limit the number of chars to 2, just state that 2 is the minimal width: $ cat printf.c #include <stdio.h> #include <stdlib.h> int main(int argc, char *argv[]) { char bf[64]; int len = snprintf(bf, sizeof(bf), "%2d", atoi(argv[1])); printf("strlen(%s): %u\n", bf, len); return 0; } $ ./printf 1 strlen( 1): 2 $ ./printf 12 strlen(12): 2 $ ./printf 123 strlen(123): 3 $ ./printf 1234 strlen(1234): 4 $ ./printf 12345 strlen(12345): 5 $ ./printf 123456 strlen(123456): 6 $ And since we probably don't want that output to be truncated, just assume the worst case, as the compiler did, and add a few more chars to that buffer. Also use sizeof(var) instead of sizeof(dup-of-wanted-format-string) to avoid bugs when changing one but not the other. I also had to change this: -#include <asm/amd-ibs.h> +#include "../../arch/x86/include/asm/amd-ibs.h" To make it build on other architectures, just like intel-pt does. Signed-off-by: Kim Phillips <kim.phillips@amd.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joao Martins <joao.m.martins@oracle.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Robert Richter <robert.richter@amd.com> Cc: Stephane Eranian <eranian@google.com> Link: https //lore.kernel.org/r/20210817221509.88391-4-kim.phillips@amd.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf report: Add tools/arch/x86/include/asm/amd-ibs.hKim Phillips2021-09-102-0/+133
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a tools/-side patch for the patch that adds the original copy of the IBS header file, in arch/x86/include/asm/. We also add an entry to check-headers.sh, so future changes continue to be copied. Committer notes: Had to add this -#include <asm/msr-index.h> +#include "msr-index.h" And change the check-headers.sh entry to ignore this line when diffing with the original kernel header. This is needed so that we can use 'perf report' on a perf.data with IBS data on a !x86 system, i.e. building on ARM fails without this as there is no asm/msr-index.h there. This was done on the next patch in this series and is done for things like Intel PT and ARM CoreSight. Signed-off-by: Kim Phillips <kim.phillips@amd.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joao Martins <joao.m.martins@oracle.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Robert Richter <robert.richter@amd.com> Cc: Stephane Eranian <eranian@google.com> Link: https //lore.kernel.org/r/20210817221509.88391-3-kim.phillips@amd.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf env: Add perf_env__cpuid, perf_env__{nr_}pmu_mappingsKim Phillips2021-09-102-0/+83
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To be used by IBS raw data display: It needs the recorder's cpuid in order to determine which errata workarounds to apply to the data, and the pmu_mappings are needed in order to figure out which PMU sample type is IBS Fetch vs. IBS Op. When not available from perf.data, we assume local operation, and retrieve cpuid and pmu mappings directly from the running system. Signed-off-by: Kim Phillips <kim.phillips@amd.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joao Martins <joao.m.martins@oracle.com> Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Robert Richter <robert.richter@amd.com> Cc: Stephane Eranian <eranian@google.com> Link: https //lore.kernel.org/r/20210817221509.88391-2-kim.phillips@amd.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf symbol: Look for ImageBase in PE file to compute .text offsetRemi Bernon2021-09-101-4/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Instead of using the file offset in the debug file. This fixes a regression from 00a3423492bc90be ("perf symbols: Make dso__load_bfd_symbols() load PE files from debug cache only"), causing incorrect symbol resolution when debug file have been stripped from non-debug sections (in which case its .text section is empty and doesn't have any file position). The debug files could also be created with a different file alignment, and have different file positions from the mmap-ed binary, or have the section reordered. This instead looks for the file image base, using the corresponding bfd *ABS* symbols. As PE symbols only have 4 bytes, it also needs to keep .text section vma high bits. Signed-off-by: Remi Bernon <rbernon@codeweavers.com> Fixes: 00a3423492bc90be ("perf symbols: Make dso__load_bfd_symbols() load PE files from debug cache only") Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Nicholas Fraser <nfraser@codeweavers.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20210909192637.4139125-1-rbernon@codeweavers.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf scripts python: Fix passing arguments to stackcollapse reportMichael Petlan2021-09-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | The '--' prevented arguments from being passed to the script, such as: $ perf script report stackcollapse -i my_perf.data Signed-off-by: Michael Petlan <mpetlan@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Paolo Bonzini <pbonzini@redhat.com> LPU-Reference: 20200427142327.21172-1-mpetlan@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf test: Fix bpf test sample mismatch reportingMichael Petlan2021-09-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the expected sample count in the condition changed, the message needs to be changed too, otherwise we'll get: 0x1001f2091d8: mmap mask[0]: BPF filter result incorrect, expected 56, got 56 samples Fixes: 4b04e0decd2518e5 ("perf test: Fix basic bpf filtering test") Signed-off-by: Michael Petlan <mpetlan@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Sumanth Korikkar <sumanthk@linux.ibm.com> Link: https //lore.kernel.org/r/20210805160611.5542-1-mpetlan@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * tools headers UAPI: Sync files changed by new process_mrelease syscall and ↵Arnaldo Carvalho de Melo2021-09-105-18/+27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | the removal of some compat entry points To pick the changes in these csets: 59ab844eed9c6b01 ("compat: remove some compat entry points") dce49103962840dd ("mm: wire up syscall process_mrelease") b48c7236b13cb5ef ("exit/bdflush: Remove the deprecated bdflush system call") That add support for this new syscall in tools such as 'perf trace'. For instance, this is now possible: # perf trace -v -e process_mrelease event qualifier tracepoint filter: (common_pid != 19351 && common_pid != 9112) && (id == 448) ^C# That is the filter expression attached to the raw_syscalls:sys_{enter,exit} tracepoints. $ grep process_mrelease tools/perf/arch/x86/entry/syscalls/syscall_64.tbl 448 common process_mrelease sys_process_mrelease $ This addresses these perf build warnings: Warning: Kernel ABI header at 'tools/include/uapi/asm-generic/unistd.h' differs from latest version at 'include/uapi/asm-generic/unistd.h' diff -u tools/include/uapi/asm-generic/unistd.h include/uapi/asm-generic/unistd.h Warning: Kernel ABI header at 'tools/perf/arch/x86/entry/syscalls/syscall_64.tbl' differs from latest version at 'arch/x86/entry/syscalls/syscall_64.tbl' diff -u tools/perf/arch/x86/entry/syscalls/syscall_64.tbl arch/x86/entry/syscalls/syscall_64.tbl Warning: Kernel ABI header at 'tools/perf/arch/powerpc/entry/syscalls/syscall.tbl' differs from latest version at 'arch/powerpc/kernel/syscalls/syscall.tbl' diff -u tools/perf/arch/powerpc/entry/syscalls/syscall.tbl arch/powerpc/kernel/syscalls/syscall.tbl Warning: Kernel ABI header at 'tools/perf/arch/s390/entry/syscalls/syscall.tbl' differs from latest version at 'arch/s390/kernel/syscalls/syscall.tbl' diff -u tools/perf/arch/s390/entry/syscalls/syscall.tbl arch/s390/kernel/syscalls/syscall.tbl Warning: Kernel ABI header at 'tools/perf/arch/mips/entry/syscalls/syscall_n64.tbl' differs from latest version at 'arch/mips/kernel/syscalls/syscall_n64.tbl' diff -u tools/perf/arch/mips/entry/syscalls/syscall_n64.tbl arch/mips/kernel/syscalls/syscall_n64.tbl Cc: Arnd Bergmann <arnd@arndb.de> Cc: Eric W. Biederman <ebiederm@xmission.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Suren Baghdasaryan <surenb@google.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * perf beauty: Update copy of linux/socket.h with the kernel sourcesArnaldo Carvalho de Melo2021-09-101-1/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To pick the changes in: Fixes: d32f89da7fa8ccc8 ("net: add accept helper not installing fd") Fixes: bc49d8169aa72295 ("mctp: Add MCTP base") This automagically adds support for the AF_MCTP protocol domain: $ tools/perf/trace/beauty/socket.sh > before $ cp include/linux/socket.h tools/perf/trace/beauty/include/linux/socket.h $ tools/perf/trace/beauty/socket.sh > after $ diff -u before after --- before 2021-09-06 11:57:14.972747200 -0300 +++ after 2021-09-06 11:57:30.541920222 -0300 @@ -44,4 +44,5 @@ [42] = "QIPCRTR", [43] = "SMC", [44] = "XDP", + [45] = "MCTP", }; $ This will allow 'perf trace' to translate 45 into "MCTP" as is done with the other domains: # perf trace -e socket* 0.000 chronyd/1029 socket(family: INET, type: DGRAM|CLOEXEC|NONBLOCK, protocol: IP) = 4 ^C# This addresses this perf build warning: Warning: Kernel ABI header at 'tools/perf/trace/beauty/include/linux/socket.h' differs from latest version at 'include/linux/socket.h' diff -u tools/perf/trace/beauty/include/linux/socket.h include/linux/socket.h Cc: David S. Miller <davem@davemloft.net> Cc: Jens Axboe <axboe@kernel.dk> Cc: Jeremy Kerr <jk@codeconstruct.com.au> Cc: Pavel Begunkov <asml.silence@gmail.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* | Merge tag 'compiler-attributes-for-linus-v5.15-rc1-v2' of ↵Linus Torvalds2021-09-124-9/+26
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://github.com/ojeda/linux Pull compiler attributes updates from Miguel Ojeda: - Fix __has_attribute(__no_sanitize_coverage__) for GCC 4 (Marco Elver) - Add Nick as Reviewer for compiler_attributes.h (Nick Desaulniers) - Move __compiletime_{error|warning} (Nick Desaulniers) * tag 'compiler-attributes-for-linus-v5.15-rc1-v2' of git://github.com/ojeda/linux: compiler_attributes.h: move __compiletime_{error|warning} MAINTAINERS: add Nick as Reviewer for compiler_attributes.h Compiler Attributes: fix __has_attribute(__no_sanitize_coverage__) for GCC 4
| * | compiler_attributes.h: move __compiletime_{error|warning}Nick Desaulniers2021-09-093-9/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Clang 14 will add support for __attribute__((__error__(""))) and __attribute__((__warning__(""))). To make use of these in __compiletime_error and __compiletime_warning (as used by BUILD_BUG and friends) for newer clang and detect/fallback for older versions of clang, move these to compiler_attributes.h and guard them with __has_attribute preprocessor guards. Link: https://reviews.llvm.org/D106030 Link: https://bugs.llvm.org/show_bug.cgi?id=16428 Link: https://github.com/ClangBuiltLinux/linux/issues/1173 Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Reviewed-by: Nathan Chancellor <nathan@kernel.org> Reviewed-by: Kees Cook <keescook@chromium.org> [Reworded, landed in Clang 14] Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
| * | MAINTAINERS: add Nick as Reviewer for compiler_attributes.hNick Desaulniers2021-08-041-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | $ ./scripts/get_maintainer.pl --rolestats --git-blame -f \ include/linux/compiler_attributes.h ... Nick Desaulniers <ndesaulniers@google.com> (supporter:CLANG/LLVM BUILD SUPPORT,authored lines:43/331=13%,commits:8/15=53%) It's also important for me to stay up on which compiler attributes clang is missing. Signed-off-by: Nick Desaulniers <ndesaulniers@google.com> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
| * | Compiler Attributes: fix __has_attribute(__no_sanitize_coverage__) for GCC 4Marco Elver2021-07-161-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix __has_attribute(__no_sanitize_coverage__) for GCC 4 by defining __GCC4_has_attribute___no_sanitize_coverage__. Fixes: 540540d06e9d ("kcov: add __no_sanitize_coverage to fix noinstr for all architectures") Reported-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Marco Elver <elver@google.com> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
* | | Merge tag 'auxdisplay-for-linus-v5.15-rc1' of git://github.com/ojeda/linuxLinus Torvalds2021-09-125-21/+36
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Pull auxdisplay updates from Miguel Ojeda: "An assortment of improvements for auxdisplay: - Replace symbolic permissions with octal permissions (Jinchao Wang) - ks0108: Switch to use module_parport_driver() (Andy Shevchenko) - charlcd: Drop unneeded initializers and switch to C99 style (Andy Shevchenko) - hd44780: Fix oops on module unloading (Lars Poeschel) - Add I2C gpio expander example (Ralf Schlatterbeck)" * tag 'auxdisplay-for-linus-v5.15-rc1' of git://github.com/ojeda/linux: auxdisplay: Replace symbolic permissions with octal permissions auxdisplay: ks0108: Switch to use module_parport_driver() auxdisplay: charlcd: Drop unneeded initializers and switch to C99 style auxdisplay: hd44780: Fix oops on module unloading auxdisplay: Add I2C gpio expander example
| * | | auxdisplay: Replace symbolic permissions with octal permissionsJinchao Wang2021-07-162-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Resolves the checkpatch warning. Signed-off-by: Jinchao Wang <wjc@cdjrlc.com> [edited wording] Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
| * | | auxdisplay: ks0108: Switch to use module_parport_driver()Andy Shevchenko2021-07-161-13/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Switch to use module_parport_driver() to reduce boilerplate code. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
| * | | auxdisplay: charlcd: Drop unneeded initializers and switch to C99 styleAndy Shevchenko2021-07-161-3/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For structure initializers the fields are 0 (or NULL) by default, so there is no need to fill them explicitly. Besides that, much easier to read when initializers use C99 style. Hence, convert to C99 style as well. Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by: Willy Tarreau <w@1wt.eu> Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
| * | | auxdisplay: hd44780: Fix oops on module unloadingLars Poeschel2021-07-161-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fixes: 718e05ed92ec ("auxdisplay: Introduce hd44780_common.[ch]") Cc: stable@vger.kernel.org Link: https://lore.kernel.org/lkml/CAHp75VfKyqy+vM0XkP9Yb+znGOTVT4zYCRY3A3nQ7C3WNUVN0g@mail.gmail.com/ Reported-By: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Lars Poeschel <poeschel@lemonage.de> Tested-by: Andy Shevchenko <andy.shevchenko@gmail.com> [added Link, Fixes, Cc stable tags, edited message] Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
| * | | auxdisplay: Add I2C gpio expander exampleRalf Schlatterbeck2021-06-091-1/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The hd44780 displays are often used with pcf8574 based I/O expanders. Add example to documentation. Suggested-by: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by: Ralf Schlatterbeck <rsc@runtux.com> [Added Suggested-by tag] Signed-off-by: Miguel Ojeda <ojeda@kernel.org>
* | | | Merge tag 'smp-urgent-2021-09-12' of ↵Linus Torvalds2021-09-128-165/+598
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull CPU hotplug updates from Thomas Gleixner: "Updates for the SMP and CPU hotplug: - Remove DEFINE_SMP_CALL_CACHE_FUNCTION() which is a left over of the original hotplug code and now causing trouble with the ARM64 cache topology setup due to the pointless SMP function call. It's not longer required as the hotplug callbacks are guaranteed to be invoked on the upcoming CPU. - Remove the deprecated and now unused CPU hotplug functions - Rewrite the CPU hotplug API documentation" * tag 'smp-urgent-2021-09-12' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: Documentation: core-api/cpuhotplug: Rewrite the API section cpu/hotplug: Remove deprecated CPU-hotplug functions. thermal: Replace deprecated CPU-hotplug functions. drivers: base: cacheinfo: Get rid of DEFINE_SMP_CALL_CACHE_FUNCTION()
| * | | | Documentation: core-api/cpuhotplug: Rewrite the API sectionThomas Gleixner2021-09-112-121/+590
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Dave stumbled over the incomplete and confusing documentation of the CPU hotplug API. Rewrite it, add the missing function documentations and correct the existing ones. Reported-by: Dave Chinner <david@fromorbit.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20210909123212.489059409@linutronix.de
| * | | | cpu/hotplug: Remove deprecated CPU-hotplug functions.Sebastian Andrzej Siewior2021-09-111-6/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | No users in tree use the deprecated CPU-hotplug functions anymore. Remove them. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20210803141621.780504-39-bigeasy@linutronix.de
| * | | | thermal: Replace deprecated CPU-hotplug functions.Sebastian Andrzej Siewior2021-09-111-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The functions get_online_cpus() and put_online_cpus() have been deprecated during the CPU hotplug rework. They map directly to cpus_read_lock() and cpus_read_unlock(). Replace deprecated CPU-hotplug functions with the official version. The behavior remains unchanged. Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Link: https://lore.kernel.org/r/20210803141621.780504-20-bigeasy@linutronix.de
| * | | | Merge branch 'linus' into smp/urgentThomas Gleixner2021-09-119039-253550/+557267
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Ensure that all usage sites of get/put_online_cpus() except for the struggler in drivers/thermal are gone. So the last user and the deprecated inlines can be removed.
| * | | | | drivers: base: cacheinfo: Get rid of DEFINE_SMP_CALL_CACHE_FUNCTION()Thomas Gleixner2021-09-015-38/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | DEFINE_SMP_CALL_CACHE_FUNCTION() was usefel before the CPU hotplug rework to ensure that the cache related functions are called on the upcoming CPU because the notifier itself could run on any online CPU. The hotplug state machine guarantees that the callbacks are invoked on the upcoming CPU. So there is no need to have this SMP function call obfuscation. That indirection was missed when the hotplug notifiers were converted. This also solves the problem of ARM64 init_cache_level() invoking ACPI functions which take a semaphore in that context. That's invalid as SMP function calls run with interrupts disabled. Running it just from the callback in context of the CPU hotplug thread solves this. Fixes: 8571890e1513 ("arm64: Add support for ACPI based firmware tables") Reported-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Tested-by: Guenter Roeck <linux@roeck-us.net> Acked-by: Will Deacon <will@kernel.org> Acked-by: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/871r69ersb.ffs@tglx
* | | | | | Merge tag 'char-misc-5.15-rc1-lkdtm' of ↵Linus Torvalds2021-09-122-11/+27
|\ \ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc Pull misc driver fix from Greg KH: "Here is a single patch for 5.15-rc1, for the lkdtm misc driver. It resolves a build issue that many people were hitting with your current tree, and Kees and others felt would be good to get merged before -rc1 comes out, to prevent them from having to constantly hit it as many development trees restart on -rc1, not older -rc releases. It has NOT been in linux-next, but has passed 0-day testing and looks 'obviously correct' when reviewing it locally :)" * tag 'char-misc-5.15-rc1-lkdtm' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: lkdtm: Use init_uts_ns.name instead of macros
| * | | | | | lkdtm: Use init_uts_ns.name instead of macrosKees Cook2021-09-102-11/+27
| | |_|_|_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Using generated/compile.h triggered a full LKDTM rebuild with every build. Avoid this by using the exported strings instead. Fixes: b8661450bc7f ("lkdtm: Add kernel version to failure hints") Signed-off-by: Kees Cook <keescook@chromium.org> Link: https://lore.kernel.org/r/20210901233406.2571643-1-keescook@chromium.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-30 03:33:57 +0000