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author | Dan Williams <dan.j.williams@intel.com> | 2017-08-31 16:25:59 -0700 |
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committer | Dan Williams <dan.j.williams@intel.com> | 2017-08-31 16:25:59 -0700 |
commit | 8f98ae0c9b90bb46097e4f28e81e9ae6148e5694 (patch) | |
tree | c1d0f0d9b0733bf3271780e45d7a1c299fe2fc48 /arch/x86/events/core.c | |
parent | 58738c495e15badd2015e19ff41f1f1ed55200bc (diff) | |
parent | 5e405595e5bf4c09fab9ca1e7dbe5b62872757b5 (diff) | |
download | op-kernel-dev-8f98ae0c9b90bb46097e4f28e81e9ae6148e5694.zip op-kernel-dev-8f98ae0c9b90bb46097e4f28e81e9ae6148e5694.tar.gz |
Merge branch 'for-4.14/fs' into libnvdimm-for-next
Diffstat (limited to 'arch/x86/events/core.c')
-rw-r--r-- | arch/x86/events/core.c | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c index 8e3db8f..af12e29 100644 --- a/arch/x86/events/core.c +++ b/arch/x86/events/core.c @@ -2114,7 +2114,7 @@ static void refresh_pce(void *ignored) load_mm_cr4(this_cpu_read(cpu_tlbstate.loaded_mm)); } -static void x86_pmu_event_mapped(struct perf_event *event) +static void x86_pmu_event_mapped(struct perf_event *event, struct mm_struct *mm) { if (!(event->hw.flags & PERF_X86_EVENT_RDPMC_ALLOWED)) return; @@ -2129,22 +2129,20 @@ static void x86_pmu_event_mapped(struct perf_event *event) * For now, this can't happen because all callers hold mmap_sem * for write. If this changes, we'll need a different solution. */ - lockdep_assert_held_exclusive(¤t->mm->mmap_sem); + lockdep_assert_held_exclusive(&mm->mmap_sem); - if (atomic_inc_return(¤t->mm->context.perf_rdpmc_allowed) == 1) - on_each_cpu_mask(mm_cpumask(current->mm), refresh_pce, NULL, 1); + if (atomic_inc_return(&mm->context.perf_rdpmc_allowed) == 1) + on_each_cpu_mask(mm_cpumask(mm), refresh_pce, NULL, 1); } -static void x86_pmu_event_unmapped(struct perf_event *event) +static void x86_pmu_event_unmapped(struct perf_event *event, struct mm_struct *mm) { - if (!current->mm) - return; if (!(event->hw.flags & PERF_X86_EVENT_RDPMC_ALLOWED)) return; - if (atomic_dec_and_test(¤t->mm->context.perf_rdpmc_allowed)) - on_each_cpu_mask(mm_cpumask(current->mm), refresh_pce, NULL, 1); + if (atomic_dec_and_test(&mm->context.perf_rdpmc_allowed)) + on_each_cpu_mask(mm_cpumask(mm), refresh_pce, NULL, 1); } static int x86_pmu_event_idx(struct perf_event *event) |