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Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

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Pull perf fixes from Thomas Gleixner:
 "Three fixes for the fallout from the TSX errata workaround:

   - Prevent memory corruption caused by a unchecked out of bound array
     index.

   - Two trivial fixes to address compiler warnings"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf/x86/intel: Make dev_attr_allow_tsx_force_abort static
  perf/x86: Fixup typo in stub functions
  perf/x86/intel: Fix memory corruption
This commit is contained in:
Linus Torvalds
2019-03-17 09:19:22 -07:00
parent c5b5138cdb c634dc6bde
commit 69ebf9a16a
2 changed files with 4 additions and 4 deletions
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4
arch/x86/events/intel/core.c
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@@ -3410,7 +3410,7 @@ tfa_get_event_constraints(struct cpu_hw_events *cpuc, int idx,
/* /*
* Without TFA we must not use PMC3. * Without TFA we must not use PMC3.
*/ */
if (!allow_tsx_force_abort && test_bit(3, c->idxmsk)) { if (!allow_tsx_force_abort && test_bit(3, c->idxmsk) && idx >= 0) {
c = dyn_constraint(cpuc, c, idx); c = dyn_constraint(cpuc, c, idx);
c->idxmsk64 &= ~(1ULL << 3); c->idxmsk64 &= ~(1ULL << 3);
c->weight--; c->weight--;
@@ -4179,7 +4179,7 @@ static struct attribute *intel_pmu_caps_attrs[] = {
NULL NULL
}; };
DEVICE_BOOL_ATTR(allow_tsx_force_abort, 0644, allow_tsx_force_abort); static DEVICE_BOOL_ATTR(allow_tsx_force_abort, 0644, allow_tsx_force_abort);
static struct attribute *intel_pmu_attrs[] = { static struct attribute *intel_pmu_attrs[] = {
&dev_attr_freeze_on_smi.attr, &dev_attr_freeze_on_smi.attr,

4
arch/x86/events/perf_event.h
View File

@@ -1033,12 +1033,12 @@ static inline int intel_pmu_init(void)
return 0; return 0;
} }
static inline int intel_cpuc_prepare(struct cpu_hw_event *cpuc, int cpu) static inline int intel_cpuc_prepare(struct cpu_hw_events *cpuc, int cpu)
{ {
return 0; return 0;
} }
static inline void intel_cpuc_finish(struct cpu_hw_event *cpuc) static inline void intel_cpuc_finish(struct cpu_hw_events *cpuc)
{ {
} }