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* Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6Linus Torvalds2011-08-0417-117/+295
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: [S390] signal: use set_restore_sigmask() helper [S390] smp: remove pointless comments in startup_secondary() [S390] qdio: Use kstrtoul_from_user [S390] sclp_async: Use kstrtoul_from_user [S390] exec: remove redundant set_fs(USER_DS) [S390] cpu hotplug: on cpu start wait until being marked active [S390] signal: convert to use set_current_blocked() [S390] asm offsets: fix coding style [S390] Add support for IBM zEnterprise 114 [S390] dasd: check if raw track access is supported [S390] Use diagnose 308 for system reset [S390] Export store_status() function [S390] dasd: use vmalloc for statistics input buffer [S390] Add PSW restart shutdown trigger [S390] missing return in page_table_alloc_pgste [S390] qdio: 2nd stage retry on SIGA-W busy conditions
| * [S390] signal: use set_restore_sigmask() helperHeiko Carstens2011-08-031-1/+1
| | | | | | | | | | | | | | | | We should call set_restore_sigmask() instead of directly setting TIF_RESTORE_SIGMASK. This change should have been done three years earlier... see 4e4c22 "signals: add set_restore_sigmask". Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
| * [S390] smp: remove pointless comments in startup_secondary()Heiko Carstens2011-08-031-6/+0
| | | | | | | | | | | | | | | | Remove pointless comments in startup_secondary(). There is not too much value in having comments like e.g. "call cpu notifiers" just before a call to notify_cpu*(). Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
| * [S390] exec: remove redundant set_fs(USER_DS)Mathias Krause2011-08-031-2/+0
| | | | | | | | | | | | | | | | The address limit is already set in flush_old_exec() so those calls to set_fs(USER_DS) are redundant. Signed-off-by: Mathias Krause <minipli@googlemail.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
| * [S390] cpu hotplug: on cpu start wait until being marked activeHeiko Carstens2011-08-031-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | This is the same as fd8a7de1 "x86: cpu-hotplug: Prevent softirq wakeup on wrong CPU". Unlike on x86 this doesn't fix a bug on s390 since we do not have threaded interrupt handlers. However we want to keep the same initialization order like on x86. This should prevent bugs caused by code which assumes (and relies on) the init order is the same on each architecture. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
| * [S390] signal: convert to use set_current_blocked()Heiko Carstens2011-08-032-72/+30
| | | | | | | | | | | | Convert to use set_current_blocked() like x86. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
| * [S390] asm offsets: fix coding styleHeiko Carstens2011-08-031-6/+3
| | | | | | | | | | | | | | Because of readability reasons we ignore the 80 character line limit in asm offsets. Just one line per define, nothing else. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
| * [S390] Add support for IBM zEnterprise 114Heiko Carstens2011-08-032-4/+5
| | | | | | | | | | | | Just fix up the Kconfig description and the elf platform. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
| * [S390] Use diagnose 308 for system resetMichael Holzheu2011-08-033-0/+43
| | | | | | | | | | | | | | | | The diagnose 308 call is the prefered method for clearing all ongoing I/O. Therefore if it is available we use it instead of doing a manual reset. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
| * [S390] Export store_status() functionMichael Holzheu2011-08-031-20/+60
| | | | | | | | | | | | | | | | | | For kdump we need a store status function to save the registers for the current CPU. Therefore this patch exports a function "store_status()". In addition to that now also floating point registers are saved correctly. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
| * [S390] Add PSW restart shutdown triggerMichael Holzheu2011-08-039-5/+146
| | | | | | | | | | | | | | | | | | | | | | | | | | With this patch a new S390 shutdown trigger "restart" is added. If under z/VM "systerm restart" is entered or under the HMC the "PSW restart" button is pressed, the PSW located at 0 (31 bit) or 0x1a0 (64 bit) bit is loaded. Now we execute do_restart() that processes the restart action that is defined under /sys/firmware/shutdown_actions/on_restart. Currently the following actions are possible: reipl (default), stop, vmcmd, dump, and dump_reipl. Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
| * [S390] missing return in page_table_alloc_pgsteJan Glauber2011-08-031-0/+1
| | | | | | | | | | | | | | | | | | | | | | Fix the following compile warning for !CONFIG_PGSTE: CC arch/s390/mm/pgtable.o arch/s390/mm/pgtable.c: In function ‘page_table_alloc_pgste’: arch/s390/mm/pgtable.c:531:1: warning: no return statement in function returning non-void [-Wreturn-type] Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
* | Merge branch 'apei' into apei-releaseLen Brown2011-08-031-0/+1
|\ \ | |/ |/| | | | | | | | | | | | | | | | | | | | | Some trivial conflicts due to other various merges adding to the end of common lists sooner than this one. arch/ia64/Kconfig arch/powerpc/Kconfig arch/x86/Kconfig lib/Kconfig lib/Makefile Signed-off-by: Len Brown <len.brown@intel.com>
| * Add Kconfig option ARCH_HAVE_NMI_SAFE_CMPXCHGHuang Ying2011-08-031-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | cmpxchg() is widely used by lockless code, including NMI-safe lockless code. But on some architectures, the cmpxchg() implementation is not NMI-safe, on these architectures the lockless code may need a spin_trylock_irqsave() based implementation. This patch adds a Kconfig option: ARCH_HAVE_NMI_SAFE_CMPXCHG, so that NMI-safe lockless code can depend on it or provide different implementation according to it. On many architectures, cmpxchg is only NMI-safe for several specific operand sizes. So, ARCH_HAVE_NMI_SAFE_CMPXCHG define in this patch only guarantees cmpxchg is NMI-safe for sizeof(unsigned long). Signed-off-by: Huang Ying <ying.huang@intel.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Chris Metcalf <cmetcalf@tilera.com> Acked-by: Richard Henderson <rth@twiddle.net> CC: Mikael Starvik <starvik@axis.com> Acked-by: David Howells <dhowells@redhat.com> CC: Yoshinori Sato <ysato@users.sourceforge.jp> CC: Tony Luck <tony.luck@intel.com> CC: Hirokazu Takata <takata@linux-m32r.org> CC: Geert Uytterhoeven <geert@linux-m68k.org> CC: Michal Simek <monstr@monstr.eu> Acked-by: Ralf Baechle <ralf@linux-mips.org> CC: Kyle McMartin <kyle@mcmartin.ca> CC: Martin Schwidefsky <schwidefsky@de.ibm.com> CC: Chen Liqin <liqin.chen@sunplusct.com> CC: "David S. Miller" <davem@davemloft.net> CC: Ingo Molnar <mingo@redhat.com> CC: Chris Zankel <chris@zankel.net> Signed-off-by: Len Brown <len.brown@intel.com>
* | atomic: cleanup asm-generic atomic*.h inclusionArun Sharma2011-07-261-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | After changing all consumers of atomics to include <linux/atomic.h>, we ran into some compile time errors due to this dependency chain: linux/atomic.h -> asm/atomic.h -> asm-generic/atomic-long.h where atomic-long.h could use funcs defined later in linux/atomic.h without a prototype. This patches moves the code that includes asm-generic/atomic*.h to linux/atomic.h. Archs that need <asm-generic/atomic64.h> need to select CONFIG_GENERIC_ATOMIC64 from now on (some of them used to include it unconditionally). Compile tested on i386 and x86_64 with allnoconfig. Signed-off-by: Arun Sharma <asharma@fb.com> Cc: Eric Dumazet <eric.dumazet@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Miller <davem@davemloft.net> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | atomic: move atomic_add_unless to generic codeArun Sharma2011-07-261-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This is in preparation for more generic atomic primitives based on __atomic_add_unless. Signed-off-by: Arun Sharma <asharma@fb.com> Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Miller <davem@davemloft.net> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | atomic: use <linux/atomic.h>Arun Sharma2011-07-263-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This allows us to move duplicated code in <asm/atomic.h> (atomic_inc_not_zero() for now) to <linux/atomic.h> Signed-off-by: Arun Sharma <asharma@fb.com> Reviewed-by: Eric Dumazet <eric.dumazet@gmail.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: David Miller <davem@davemloft.net> Cc: Eric Dumazet <eric.dumazet@gmail.com> Acked-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | asm-generic: add another generic ext2 atomic bitopsAkinobu Mita2011-07-261-4/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The majority of architectures implement ext2 atomic bitops as test_and_{set,clear}_bit() without spinlock. This adds this type of generic implementation in ext2-atomic-setbit.h and use it wherever possible. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Suggested-by: Andreas Dilger <adilger@dilger.ca> Suggested-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | ptrace: unify show_regs() prototypeMike Frysinger2011-07-261-1/+0
| | | | | | | | | | | | | | | | | | [ poleg@redhat.com: no need to declare show_regs() in ptrace.h, sched.h does this ] Signed-off-by: Mike Frysinger <vapier@gentoo.org> Cc: Tejun Heo <tj@kernel.org> Signed-off-by: Oleg Nesterov <oleg@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Merge branch 'for-linus' of ↵Linus Torvalds2011-07-251-2/+0
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (43 commits) fs: Merge split strings treewide: fix potentially dangerous trailing ';' in #defined values/expressions uwb: Fix misspelling of neighbourhood in comment net, netfilter: Remove redundant goto in ebt_ulog_packet trivial: don't touch files that are removed in the staging tree lib/vsprintf: replace link to Draft by final RFC number doc: Kconfig: `to be' -> `be' doc: Kconfig: Typo: square -> squared doc: Konfig: Documentation/power/{pm => apm-acpi}.txt drivers/net: static should be at beginning of declaration drivers/media: static should be at beginning of declaration drivers/i2c: static should be at beginning of declaration XTENSA: static should be at beginning of declaration SH: static should be at beginning of declaration MIPS: static should be at beginning of declaration ARM: static should be at beginning of declaration rcu: treewide: Do not use rcu_read_lock_held when calling rcu_dereference_check Update my e-mail address PCIe ASPM: forcedly -> forcibly gma500: push through device driver tree ... Fix up trivial conflicts: - arch/arm/mach-ep93xx/dma-m2p.c (deleted) - drivers/gpio/gpio-ep93xx.c (renamed and context nearby) - drivers/net/r8169.c (just context changes)
| * | Merge branch 'master' into for-nextJiri Kosina2011-07-113-3/+10
| |\| | | | | | | | | | | | | Sync with Linus' tree to be able to apply pending patches that are based on newer code already present upstream.
| * | s390: do not touch sie64a.S with duplicate include removalJiri Kosina2011-06-241-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is a partial revert of e44ba033c565 ("treewide: remove duplicate includes"). The file is gone in s390 tree and will not exist any more. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
| * | treewide: remove duplicate includesVitaliy Ivanov2011-06-202-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | Many stupid corrections of duplicated includes based on the output of scripts/checkincludes.pl. Signed-off-by: Vitaliy Ivanov <vitalivanov@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | | Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6Linus Torvalds2011-07-2449-1022/+1301
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (21 commits) [S390] use siginfo for sigtrap signals [S390] dasd: add enhanced DASD statistics interface [S390] kvm: make sigp emerg smp capable [S390] disable cpu measurement alerts on a dying cpu [S390] initial cr0 bits [S390] iucv cr0 enablement bit [S390] race safe external interrupt registration [S390] remove tape block docu [S390] ap: toleration support for ap device type 10 [S390] cleanup program check handler prototypes [S390] remove kvm mmu reload on s390 [S390] Use gmap translation for accessing guest memory [S390] use gmap address spaces for kvm guest images [S390] kvm guest address space mapping [S390] fix s390 assembler code alignments [S390] move sie code to entry.S [S390] kvm: handle tprot intercepts [S390] qdio: clear shared DSCI before scheduling the queue handler [S390] reference bit testing for unmapped pages [S390] irqs: Do not trace arch_local_{*,irq_*} functions ...
| * | | [S390] use siginfo for sigtrap signalsMartin Schwidefsky2011-07-241-6/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Provide additional information on SIGTRAP by using a sig_info signal. Use TRAP_BRKPT for breakpoints via illegal operation and TRAP_HWBKPT for breakpoints via program event recording. Provide the address of the instruction that caused the breakpoint via si_addr. While we are at it get rid of tracehook_consider_fatal_signal. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | [S390] kvm: make sigp emerg smp capableChristian Ehrhardt2011-07-242-0/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | SIGP emerg needs to pass the source vpu adress into __LC_CPU_ADDRESS of the target guest. Signed-off-by: Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | [S390] disable cpu measurement alerts on a dying cpuJan Glauber2011-07-241-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The cpu measurement alerts that are used for instance by oprofile for hardware sampling are not turned off on a cpu that is going offline. Add the appropriate control register bit that should be disabled to the list. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | [S390] initial cr0 bitsMartin Schwidefsky2011-07-241-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Remove outdated bits from the initial cr0 register. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | [S390] iucv cr0 enablement bitMartin Schwidefsky2011-07-242-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Do not set the cr0 enablement bit for iucv by default in head[31|64].S, move the enablement to iucv_init in the iucv base layer. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | [S390] race safe external interrupt registrationJan Glauber2011-07-241-37/+46
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The (un-)register_external_interrupt functions are not race safe if more than one interrupt handler is added or deleted for an external interrupt concurrently. Make the registration / unregistration of external interrupts race safe by using RCU and a spinlock. RCU is used to avoid a performance penalty in the external interrupt handler, the register and unregister functions are protected by the spinlock and are not performance critical. call_rcu must be used since the SCLP driver uses the interface with IRQs disabled. Also use the generic list implementation rather than homebrewn list code. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | [S390] cleanup program check handler prototypesMartin Schwidefsky2011-07-242-13/+7
| | | | | | | | | | | | | | | | Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | [S390] remove kvm mmu reload on s390Carsten Otte2011-07-242-19/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes the mmu reload logic for kvm on s390. Via Martin's new gmap interface, we can safely add or remove memory slots while guest CPUs are in-flight. Thus, the mmu reload logic is not needed anymore. Signed-off-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | [S390] Use gmap translation for accessing guest memoryCarsten Otte2011-07-246-110/+194
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes kvm-s390 internal assumption of a linear mapping of guest address space to user space. Previously, guest memory was translated to user addresses using a fixed offset (gmsor). The new code uses gmap_fault to resolve guest addresses. Signed-off-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | [S390] use gmap address spaces for kvm guest imagesCarsten Otte2011-07-243-12/+40
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch switches kvm from using (Qemu's) user address space to Martin's gmap address space. This way QEMU does not have to use a linker script in order to fit large guests at low addresses in its address space. Signed-off-by: Carsten Otte <cotte@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | [S390] kvm guest address space mappingMartin Schwidefsky2011-07-2411-36/+473
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add code that allows KVM to control the virtual memory layout that is seen by a guest. The guest address space uses a second page table that shares the last level pte-tables with the process page table. If a page is unmapped from the process page table it is automatically unmapped from the guest page table as well. The guest address space mapping starts out empty, KVM can map any individual 1MB segments from the process virtual memory to any 1MB aligned location in the guest virtual memory. If a target segment in the process virtual memory does not exist or is unmapped while a guest mapping exists the desired target address is stored as an invalid segment table entry in the guest page table. The population of the guest page table is fault driven. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | [S390] fix s390 assembler code alignmentsJan Glauber2011-07-2421-680/+378
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The alignment is missing for various global symbols in s390 assembly code. With a recent gcc and an instruction like stgrl this can lead to a specification exception if the instruction uses such a mis-aligned address. Specify the alignment explicitely and while add it define __ALIGN for s390 and use the ENTRY define to save some lines of code. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | [S390] move sie code to entry.SMartin Schwidefsky2011-07-245-107/+79
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The entry to / exit from sie has subtle dependencies to the first level interrupt handler. Move the sie assembler code to entry64.S and replace the SIE_HOOK callback with a test and the new _TIF_SIE bit. In addition this patch fixes several problems in regard to the check for the_TIF_EXIT_SIE bits. The old code checked the TIF bits before executing the interrupt handler and it only modified the instruction address if it pointed directly to the sie instruction. In both cases it could miss a TIF bit that normally would cause an exit from the guest and would reenter the guest context. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | [S390] kvm: handle tprot interceptsChristian Borntraeger2011-07-245-0/+53
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When running a kvm guest we can get intercepts for tprot, if the host page table is read-only or not populated. This patch implements the most common case (linux memory detection). This also allows host copy on write for guest memory on newer systems. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
| * | | [S390] irqs: Do not trace arch_local_{*,irq_*} functionsSteven Rostedt2011-07-241-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Do not trace arch_local_save_flags(), arch_local_irq_*() and friends. Although they are marked inline, gcc may still make a function out of them and add it to the pool of functions that are traced by the function tracer. This can cause undesirable results (kernel panic, triple faults, etc). Add the notrace notation to prevent them from ever being traced. Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linusLinus Torvalds2011-07-241-20/+0
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/rusty/linux-2.6-for-linus: modpost: Fix modpost's license checking V3 module: add /sys/module/<name>/uevent files module: change attr callbacks to take struct module_kobject modules: make arch's use default loader hooks modules: add default loader hook implementations param: fix return value handling in param_set_*
| * | | | modules: make arch's use default loader hooksJonas Bonn2011-07-241-20/+0
| |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch removes all the module loader hook implementations in the architecture specific code where the functionality is the same as that now provided by the recently added default hooks. Signed-off-by: Jonas Bonn <jonas@southpole.se> Acked-by: Mike Frysinger <vapier@gentoo.org> Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> Tested-by: Michal Simek <monstr@monstr.eu> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6Linus Torvalds2011-07-241-11/+55
|\ \ \ \ | |/ / / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (34 commits) crypto: caam - ablkcipher support crypto: caam - faster aead implementation crypto: caam - structure renaming crypto: caam - shorter names crypto: talitos - don't bad_key in ablkcipher setkey crypto: talitos - remove unused giv from ablkcipher methods crypto: talitos - don't set done notification in hot path crypto: talitos - ensure request ordering within a single tfm crypto: gf128mul - fix call to memset() crypto: s390 - support hardware accelerated SHA-224 crypto: algif_hash - Handle initial af_alg_make_sg error correctly crypto: sha1_generic - use SHA1_BLOCK_SIZE hwrng: ppc4xx - add support for ppc4xx TRNG crypto: crypto4xx - Perform read/modify/write on device control register crypto: caam - fix build warning when DEBUG_FS not configured crypto: arc4 - Fixed coding style issues crypto: crc32c - Fixed coding style issue crypto: omap-sham - do not schedule tasklet if there is no active requests crypto: omap-sham - clear device flags when finishing request crypto: omap-sham - irq handler must not clear error code ...
| * | | crypto: s390 - support hardware accelerated SHA-224Jan Glauber2011-07-041-11/+55
| |/ / | | | | | | | | | | | | | | | | | | | | | | | | On recent s390 machines hardware acceleration is available for SHA-256. SHA-224 is based on SHA-256 so it can also be accelerated by hardware. Do this by adding the proper algorithm description and initialization. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
* | | virtio: expose for non-virtualization users tooOhad Ben-Cohen2011-07-231-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | virtio has been so far used only in the context of virtualization, and the virtio Kconfig was sourced directly by the relevant arch Kconfigs when VIRTUALIZATION was selected. Now that we start using virtio for inter-processor communications, we need to source the virtio Kconfig outside of the virtualization scope too. Moreover, some architectures might use virtio for both virtualization and inter-processor communications, so directly sourcing virtio might yield unexpected results due to conflicting selections. The simple solution offered by this patch is to always source virtio's Kconfig in drivers/Kconfig, and remove it from the appropriate arch Kconfigs. Additionally, a virtio menu entry has been added so virtio drivers don't show up in the general drivers menu. This way anyone can use virtio, though it's arguably less accessible (and neat!) for virtualization users now. Note: some architectures (mips and sh) seem to have a VIRTUALIZATION menu merely for sourcing virtio's Kconfig, so that menu is removed too. Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
* | | Merge branch 'perf-core-for-linus' of ↵Linus Torvalds2011-07-221-3/+3
|\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (123 commits) perf: Remove the nmi parameter from the oprofile_perf backend x86, perf: Make copy_from_user_nmi() a library function perf: Remove perf_event_attr::type check x86, perf: P4 PMU - Fix typos in comments and style cleanup perf tools: Make test use the preset debugfs path perf tools: Add automated tests for events parsing perf tools: De-opt the parse_events function perf script: Fix display of IP address for non-callchain path perf tools: Fix endian conversion reading event attr from file header perf tools: Add missing 'node' alias to the hw_cache[] array perf probe: Support adding probes on offline kernel modules perf probe: Add probed module in front of function perf probe: Introduce debuginfo to encapsulate dwarf information perf-probe: Move dwarf library routines to dwarf-aux.{c, h} perf probe: Remove redundant dwarf functions perf probe: Move strtailcmp to string.c perf probe: Rename DIE_FIND_CB_FOUND to DIE_FIND_CB_END tracing/kprobe: Update symbol reference when loading module tracing/kprobes: Support module init function probing kprobes: Return -ENOENT if probe point doesn't exist ...
| * | | perf: Remove the nmi parameter from the swevent and overflow interfacePeter Zijlstra2011-07-011-3/+3
| | |/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The nmi parameter indicated if we could do wakeups from the current context, if not, we would set some state and self-IPI and let the resulting interrupt do the wakeup. For the various event classes: - hardware: nmi=0; PMI is in fact an NMI or we run irq_work_run from the PMI-tail (ARM etc.) - tracepoint: nmi=0; since tracepoint could be from NMI context. - software: nmi=[0,1]; some, like the schedule thing cannot perform wakeups, and hence need 0. As one can see, there is very little nmi=1 usage, and the down-side of not using it is that on some platforms some software events can have a jiffy delay in wakeup (when arch_irq_work_raise isn't implemented). The up-side however is that we can remove the nmi parameter and save a bunch of conditionals in fast paths. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Michael Cree <mcree@orcon.net.nz> Cc: Will Deacon <will.deacon@arm.com> Cc: Deng-Cheng Zhu <dengcheng.zhu@gmail.com> Cc: Anton Blanchard <anton@samba.org> Cc: Eric B Munson <emunson@mgebm.net> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: David S. Miller <davem@davemloft.net> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jason Wessel <jason.wessel@windriver.com> Cc: Don Zickus <dzickus@redhat.com> Link: http://lkml.kernel.org/n/tip-agjev8eu666tvknpb3iaj0fg@git.kernel.org Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | | Merge branch 'ptrace' of git://git.kernel.org/pub/scm/linux/kernel/git/oleg/miscLinus Torvalds2011-07-221-2/+2
|\ \ \ | |/ / |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'ptrace' of git://git.kernel.org/pub/scm/linux/kernel/git/oleg/misc: (39 commits) ptrace: do_wait(traced_leader_killed_by_mt_exec) can block forever ptrace: fix ptrace_signal() && STOP_DEQUEUED interaction connector: add an event for monitoring process tracers ptrace: dont send SIGSTOP on auto-attach if PT_SEIZED ptrace: mv send-SIGSTOP from do_fork() to ptrace_init_task() ptrace_init_task: initialize child->jobctl explicitly has_stopped_jobs: s/task_is_stopped/SIGNAL_STOP_STOPPED/ ptrace: make former thread ID available via PTRACE_GETEVENTMSG after PTRACE_EVENT_EXEC stop ptrace: wait_consider_task: s/same_thread_group/ptrace_reparented/ ptrace: kill real_parent_is_ptracer() in in favor of ptrace_reparented() ptrace: ptrace_reparented() should check same_thread_group() redefine thread_group_leader() as exit_signal >= 0 do not change dead_task->exit_signal kill task_detached() reparent_leader: check EXIT_DEAD instead of task_detached() make do_notify_parent() __must_check, update the callers __ptrace_detach: avoid task_detached(), check do_notify_parent() kill tracehook_notify_death() make do_notify_parent() return bool ptrace: s/tracehook_tracer_task()/ptrace_parent()/ ...
| * | ptrace: kill trivial tracehooksTejun Heo2011-06-221-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | At this point, tracehooks aren't useful to mainline kernel and mostly just add an extra layer of obfuscation. Although they have comments, without actual in-kernel users, it is difficult to tell what are their assumptions and they're actually trying to achieve. To mainline kernel, they just aren't worth keeping around. This patch kills the following trivial tracehooks. * Ones testing whether task is ptraced. Replace with ->ptrace test. tracehook_expect_breakpoints() tracehook_consider_ignored_signal() tracehook_consider_fatal_signal() * ptrace_event() wrappers. Call directly. tracehook_report_exec() tracehook_report_exit() tracehook_report_vfork_done() * ptrace_release_task() wrapper. Call directly. tracehook_finish_release_task() * noop tracehook_prepare_release_task() tracehook_report_death() This doesn't introduce any behavior change. Signed-off-by: Tejun Heo <tj@kernel.org> Cc: Christoph Hellwig <hch@infradead.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Oleg Nesterov <oleg@redhat.com>
* | | [S390] allow setting of upper 32 bit in smp_ctl_set_bitJan Glauber2011-06-221-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The bit shift operation in smp_ctl_set_bit does not specify the type of the shifted bit so integer is used as default. Therefore it is not possible to set bits in the upper 32 bit of the control register if the kernel runs in 64 bit mode. Fix this by specifying the type as unsigned long. Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
* | | [S390] hwsampler: Set a sane default sampling rateChristian Borntraeger2011-06-221-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The sampling interval for the hardware sampler is specified in cycles. (see SA23-2260-01 The Load-Program-Parameter and the CPU-Measurement Facilities) The current default value will therefore result in millions of samples. This patch changes the default sampling interval to 4M, which will result in ~1500 samples per second on a z196 reducing the overhead of sampling. Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
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