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| author | Ingo Molnar <mingo@kernel.org> | 2013-10-11 07:39:37 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2013-10-11 07:39:37 +0200 |
| commit | ec0ad3d01f99d5e5b56a99a58f7003b99250dc65 (patch) | |
| tree | 85066cbea1cf8da6d099019adefaca90aae39234 /arch/x86/kernel/cpu | |
| parent | sched/numa: Reflow task_numa_group() to avoid a compiler warning (diff) | |
| parent | compiler/gcc4: Add quirk for 'asm goto' miscompilation bug (diff) | |
| download | linux-ec0ad3d01f99d5e5b56a99a58f7003b99250dc65.tar.xz linux-ec0ad3d01f99d5e5b56a99a58f7003b99250dc65.zip | |
Merge branch 'core/urgent' into sched/core
Merge in asm goto fix, to be able to apply the asm/rmwcc.h fix.
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/kernel/cpu')
| -rw-r--r-- | arch/x86/kernel/cpu/perf_event.c | 11 |
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); } /* |