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9029a5e380
linux/arch/x86/kernel/cpu
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Ingo Molnar 9029a5e380 perf_counter: x86: Protect against infinite loops in intel_pmu_handle_irq() 
intel_pmu_handle_irq() can lock up in an infinite loop if the hardware
does not allow the acking of irqs. Alas, this happened in testing so
make this robust and emit a warning if it happens in the future.

Also, clean up the IRQ handlers a bit.

[ Impact: improve perfcounter irq/nmi handling robustness ]

Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2009-05-15 09:47:06 +02:00
..
cpufreq acpi-cpufreq: Do not let get_measured perf depend on internal variable 2009-04-19 22:47:21 -04:00
mcheck Merge branch 'linus' into cpumask-for-linus 2009-03-30 23:53:32 +02:00
mtrr x86, mtrr: remove debug message 2009-04-04 00:31:02 +02:00
.gitignore Update .gitignore files for generated targets 2008-10-20 11:24:31 -07:00
addon_cpuid_features.c x86 ACPI: Add support for Always Running APIC timer 2009-04-07 18:17:51 -04:00
amd.c perf_counter, x86: remove X86_FEATURE_ARCH_PERFMON flag for AMD cpus 2009-04-29 14:51:00 +02:00
bugs_64.c x86: move bugs_64.c to cpu/bugs_64.c 2008-06-03 14:43:00 -07:00
bugs.c x86: fdiv bug detection fix 2008-07-31 23:56:27 +02:00
centaur.c x86/centaur: merge 32 & 64 bit version 2009-03-14 16:27:29 +01:00
cmpxchg.c x86: move cmpxchg fallbacks to a generic place 2008-08-18 16:05:47 +02:00
common.c Merge branch 'linus' into perfcounters/core-v2 2009-04-06 09:02:57 +02:00
cpu_debug.c x86: cpu_debug remove execute permission 2009-04-09 06:34:02 +02:00
cpu.h x86: cpu/cpu.h cleanup 2009-03-23 02:06:51 +05:30
cyrix.c x86: move various CPU initialization objects into .cpuinit.rodata 2009-03-12 13:13:07 +01:00
hypervisor.c x86: hypervisor - fix sparse warnings 2008-11-23 11:11:52 +01:00
intel_cacheinfo.c Merge branch 'linus' into cpumask-for-linus 2009-03-30 23:53:32 +02:00
intel.c Merge branch 'linus' into x86/core 2009-03-28 22:27:45 +01:00
Makefile Merge branch 'linus' into perfcounters/core-v2 2009-04-06 09:02:57 +02:00
mkcapflags.pl x86: generate names for /proc/cpuinfo from <asm/cpufeature.h> 2008-08-27 19:23:22 -07:00
perf_counter.c perf_counter: x86: Protect against infinite loops in intel_pmu_handle_irq() 2009-05-15 09:47:06 +02:00
perfctr-watchdog.c x86: fold apic_ops into genapic 2009-02-17 12:22:20 +01:00
powerflags.c x86: generate names for /proc/cpuinfo from <asm/cpufeature.h> 2008-08-27 19:23:22 -07:00
proc.c cpumask: use new cpumask functions throughout x86 2009-03-13 14:49:54 +10:30
transmeta.c x86: move various CPU initialization objects into .cpuinit.rodata 2009-03-12 13:13:07 +01:00
umc.c x86: move various CPU initialization objects into .cpuinit.rodata 2009-03-12 13:13:07 +01:00
vmware.c x86: vmware - fix sparse warnings 2008-11-23 11:02:36 +01:00