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linux/arch/x86/kernel/cpu
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Peter Zijlstra f3d46b2e6f perf, x86: Fix double enable calls 
hw_perf_enable() would enable already enabled events.

This causes problems with code that assumes that ->enable/->disable calls
are balanced (like the LBR code does).

What happens is that events that were already running and left in place
would get enabled again.

Avoid this by only enabling new events that match their previous
assignment.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Arnaldo Carvalho de Melo <acme@infradead.org>
Cc: paulus@samba.org
Cc: eranian@google.com
Cc: robert.richter@amd.com
Cc: fweisbec@gmail.com
LKML-Reference: <new-submission>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-03-10 13:22:35 +01:00
..
cpufreq Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/davej/cpufreq 2010-03-07 12:52:38 -08:00
mcheck sysfs: Use sysfs_attr_init and sysfs_bin_attr_init on dynamic attributes 2010-03-07 17:04:51 -08:00
mtrr x86: fix mtrr missing kernel-doc 2010-03-05 11:46:03 -08:00
.gitignore
addon_cpuid_features.c x86, cpu: Print AMD virtualization features in /proc/cpuinfo 2010-02-13 15:04:40 -08:00
amd.c x86, amd: Get multi-node CPU info from NodeId MSR instead of PCI config space 2009-12-16 15:06:23 -08:00
bugs.c x86/cpu: Clean up various files a bit 2009-07-11 11:24:09 +02:00
bugs_64.c x86/cpu: Clean up various files a bit 2009-07-11 11:24:09 +02:00
centaur.c x86, cpu: mv display_cacheinfo -> cpu_detect_cache_sizes 2009-11-23 11:59:53 -08:00
cmpxchg.c
common.c Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-12-14 12:36:46 -08:00
cpu.h x86, cpu: mv display_cacheinfo -> cpu_detect_cache_sizes 2009-11-23 11:59:53 -08:00
cyrix.c x86, cpu: mv display_cacheinfo -> cpu_detect_cache_sizes 2009-11-23 11:59:53 -08:00
hypervisor.c x86: Move tsc_calibration to x86_init_ops 2009-08-31 09:35:47 +02:00
intel.c x86: Reenable TSC sync check at boot, even with NONSTOP_TSC 2009-12-17 14:44:35 -08:00
intel_cacheinfo.c Driver core: Constify struct sysfs_ops in struct kobj_type 2010-03-07 17:04:49 -08:00
Makefile x86: Remove "x86 CPU features in debugfs" (CONFIG_X86_CPU_DEBUG) 2010-01-23 18:27:47 -08:00
mkcapflags.pl
perf_event.c perf, x86: Fix double enable calls 2010-03-10 13:22:35 +01:00
perf_event_amd.c perf, x86: Use unlocked bitops 2010-03-10 13:22:29 +01:00
perf_event_intel.c perf, x86: Avoid double disable on throttle vs ioctl(PERF_IOC_DISABLE) 2010-03-10 13:22:31 +01:00
perf_event_p6.c perf, x86: Change x86_pmu.{enable,disable} calling convention 2010-03-10 13:22:28 +01:00
perfctr-watchdog.c perf, x86: rename macro in ARCH_PERFMON_EVENTSEL_ENABLE 2010-03-01 14:21:23 +01:00
powerflags.c
proc.c Merge branch 'x86-cpu-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2009-09-14 07:57:32 -07:00
sched.c sched: x86: Name old_perf in a unique way 2009-09-16 11:21:07 +02:00
transmeta.c x86, cpu: mv display_cacheinfo -> cpu_detect_cache_sizes 2009-11-23 11:59:53 -08:00
umc.c x86: move various CPU initialization objects into .cpuinit.rodata 2009-03-12 13:13:07 +01:00
vmware.c x86: Print the hypervisor returned tsc_khz during boot 2009-09-20 20:25:36 +02:00