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

Pull perf fixes from Ingo Molnar:
 "Various fixlets:

  On the kernel side:

   - fix a race
   - fix a bug in the handling of the perf ring-buffer data page

  On the tooling side:

   - fix the handling of certain corrupted perf.data files
   - fix a bug in 'perf probe'
   - fix a bug in 'perf record + perf sched'
   - fix a bug in 'make install'
   - fix a bug in libaudit feature-detection on certain distros"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf session: Fix infinite loop on invalid perf.data file
  perf tools: Fix installation of libexec components
  perf probe: Fix to find line information for probe list
  perf tools: Fix libaudit test
  perf stat: Set child_pid after perf_evlist__prepare_workload()
  perf tools: Add default handler for mmap2 events
  perf/x86: Clean up cap_user_time* setting
  perf: Fix perf_pmu_migrate_context

1 files changed, 3 insertions, 8 deletions

diff --git a/arch/x86/kernel/cpu/perf_event.c b/arch/x86/kernel/cpu/perf_event.c
index 897783b3302a..9d8449158cf9 100644
--- a/arch/x86/kernel/cpu/perf_event.c
+++ b/arch/x86/kernel/cpu/perf_event.c
@@ -1888,10 +1888,7 @@ void arch_perf_update_userpage(struct perf_event_mmap_page *userpg, u64 now)
         userpg->cap_user_rdpmc = x86_pmu.attr_rdpmc;
         userpg->pmc_width = x86_pmu.cntval_bits;
 
-        if (!boot_cpu_has(X86_FEATURE_CONSTANT_TSC))
-                return;
-
-        if (!boot_cpu_has(X86_FEATURE_NONSTOP_TSC))
+        if (!sched_clock_stable)
                 return;
 
         userpg->cap_user_time = 1;
@@ -1899,10 +1896,8 @@ void arch_perf_update_userpage(struct perf_event_mmap_page *userpg, u64 now)
         userpg->time_shift = CYC2NS_SCALE_FACTOR;
         userpg->time_offset = this_cpu_read(cyc2ns_offset) - now;
 
-        if (sched_clock_stable && !check_tsc_disabled()) {
-                userpg->cap_user_time_zero = 1;
-                userpg->time_zero = this_cpu_read(cyc2ns_offset);
-        }
+        userpg->cap_user_time_zero = 1;
+        userpg->time_zero = this_cpu_read(cyc2ns_offset);
 }
 
 /*