Andi Kleen b28ae9560b perf/x86: Fix LBR call stack save/restore ... This fixes a bug I added in the following commit: 90405aa022 ("perf/x86/intel/lbr: Limit LBR accesses to TOS in callstack mode") The bug could lead to lost LBR call stacks. When restoring the LBR state we need to use the TOS of the previous context, not the current context. To do that we need to save/restore the TOS. Signed-off-by: Andi Kleen <ak@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Vince Weaver <vincent.weaver@maine.edu> Cc: acme@kernel.org Cc: jolsa@kernel.org Link: http://lkml.kernel.org/r/1445366797-30894-1-git-send-email-andi@firstfloor.org Signed-off-by: Ingo Molnar <mingo@kernel.org>		2015-11-23 09:44:57 +01:00
..
mcheck	x86/mce: Add a default case to the switch in __mcheck_cpu_ancient_init()	2015-11-01 11:26:14 +01:00
microcode	x86/microcode/intel: Move #ifdef DEBUG inside the function	2015-10-21 11:22:12 +02:00
mtrr	x86/mm/mtrr: Remove kernel internal MTRR interfaces: unexport mtrr_add() and mtrr_del()	2015-08-28 10:09:28 +02:00
.gitignore
amd.c	x86/AMD: Fix last level cache topology for AMD Fam17h systems	2015-11-07 10:37:51 +01:00
bugs_64.c
bugs.c	x86/fpu: Move various internal function prototypes to fpu/internal.h	2015-05-19 15:47:48 +02:00
centaur.c	x86: Remove CONFIG_X86_OOSTORE	2014-03-11 10:16:18 -07:00
common.c	x86/cpu: Fix SMAP check in PVOPS environments	2015-11-19 11:07:49 +01:00
cpu.h	x86/cpu: Restore MSR_IA32_ENERGY_PERF_BIAS after resume	2015-07-21 07:51:38 +02:00
cyrix.c	x86: Delete non-required instances of include <linux/init.h>	2014-01-06 21:25:18 -08:00
hypervisor.c	hypervisor/x86/xen: Unset X86_BUG_SYSRET_SS_ATTRS on Xen PV guests	2015-05-05 18:27:43 +01:00
intel_cacheinfo.c	perf/core, perf/x86: Change needlessly global functions and a variable to static	2015-09-28 08:09:52 +02:00
intel_pt.h	perf/x86/intel/pt: Clean up files of Intel Processor Trace	2015-08-12 11:43:22 +02:00
intel.c	x86/cpu/intel: Enable X86_FEATURE_NONSTOP_TSC_S3 for Merrifield	2015-11-07 10:37:30 +01:00
Makefile	perf/x86: Add Intel cstate PMUs support	2015-10-06 17:31:51 +02:00
match.c	x86: align x86 arch with generic CPU modalias handling	2014-02-18 12:45:38 -08:00
mkcapflags.sh	x86/build: Fix mkcapflags.sh bash-ism	2015-02-19 02:21:00 +01:00
mshyperv.c	x86/hyperv: Fix the build in the !CONFIG_KEXEC_CORE case	2015-09-30 07:44:15 +02:00
perf_event_amd_ibs.c	perf/x86/amd/ibs: Convert force_ibs_eilvt_setup() to void	2015-02-18 17:01:46 +01:00
perf_event_amd_iommu.c	cpumask: factor out show_cpumap into separate helper function	2014-11-07 11:45:00 -08:00
perf_event_amd_iommu.h	perf/x86/amd: AMD IOMMU Performance Counter PERF uncore PMU implementation	2013-06-19 13:04:53 +02:00
perf_event_amd_uncore.c	cpumask: factor out show_cpumap into separate helper function	2014-11-07 11:45:00 -08:00
perf_event_amd.c	perf/x86: Add 'index' param to get_event_constraint() callback	2015-04-02 17:33:10 +02:00
perf_event_intel_bts.c	perf/x86/intel/bts: Disallow use by unprivileged users on paranoid systems	2015-09-13 11:27:22 +02:00
perf_event_intel_cqm.c	perf/core: Robustify the perf_cgroup_from_task() RCU checks	2015-11-23 09:21:03 +01:00
perf_event_intel_cstate.c	perf/x86: Add Intel cstate PMUs support	2015-10-06 17:31:51 +02:00
perf_event_intel_ds.c	perf/x86/intel/ds: Work around BTS leaking kernel addresses	2015-09-13 11:27:21 +02:00
perf_event_intel_lbr.c	perf/x86: Fix LBR call stack save/restore	2015-11-23 09:44:57 +01:00
perf_event_intel_pt.c	perf/x86/intel/pt: Fix KVM warning due to doing rdmsr() before the CPUID test	2015-09-13 11:27:23 +02:00
perf_event_intel_rapl.c	perf/x86/intel/rapl: Remove the unused RAPL_EVENT_DESC() macro	2015-11-12 09:44:25 +01:00
perf_event_intel_uncore_nhmex.c	perf/x86/uncore: Fix coccinelle warnings	2014-08-13 07:51:09 +02:00
perf_event_intel_uncore_snb.c	perf/x86/intel/uncore: Fix multi-segment problem of perf_event_intel_uncore	2015-10-06 17:31:51 +02:00
perf_event_intel_uncore_snbep.c	perf/x86/intel/uncore: Fix multi-segment problem of perf_event_intel_uncore	2015-10-06 17:31:51 +02:00
perf_event_intel_uncore.c	perf/x86/intel/uncore: Fix multi-segment problem of perf_event_intel_uncore	2015-10-06 17:31:51 +02:00
perf_event_intel_uncore.h	perf/x86/intel/uncore: Fix multi-segment problem of perf_event_intel_uncore	2015-10-06 17:31:51 +02:00
perf_event_intel.c	perf/x86/intel: Fix Skylake FRONTEND MSR extrareg mask	2015-09-18 09:20:23 +02:00
perf_event_knc.c	x86: Replace __get_cpu_var uses	2014-08-26 13:45:49 -04:00
perf_event_msr.c	arch/x86/kernel/cpu/perf_event_msr.c: use sign_extend64() for sign extension	2015-11-06 17:50:42 -08:00
perf_event_p4.c	x86: Replace __get_cpu_var uses	2014-08-26 13:45:49 -04:00
perf_event_p6.c	perf/x86/intel/p6: Add userspace RDPMC quirk for PPro	2014-02-09 13:08:24 +01:00
perf_event.c	perf/core: Drop PERF_EVENT_TXN	2015-09-13 11:27:30 +02:00
perf_event.h	perf/x86: Fix LBR call stack save/restore	2015-11-23 09:44:57 +01:00
perfctr-watchdog.c	perf/x86: Add support for Intel Xeon-Phi Knights Corner PMU	2012-10-04 13:32:37 +02:00
powerflags.c	update AMD powerflags comments	2013-05-28 12:02:10 +02:00
proc.c	x86: Replace cpu_**_mask() with topology_**_cpumask()	2015-05-27 15:22:17 +02:00
rdrand.c	x86, rdrand: When nordrand is specified, disable RDSEED as well	2014-05-11 20:25:20 -07:00
scattered.c	x86/cpufeatures: Correct spelling of the HWP_NOTIFY flag	2015-09-23 09:57:24 +02:00
topology.c	x86: delete __cpuinit usage from all x86 files	2013-07-14 19:36:56 -04:00
transmeta.c	x86: Delete non-required instances of include <linux/init.h>	2014-01-06 21:25:18 -08:00
umc.c	x86: Delete non-required instances of include <linux/init.h>	2014-01-06 21:25:18 -08:00
vmware.c	x86: Correctly detect hypervisor	2013-08-05 06:35:33 -07:00