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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-15 11:29:24 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-03-15 11:29:24 -0700 |
| commit | ae465beeff5e7f49e029c7de02f055fe0dca4b19 (patch) | |
| tree | 331bdd7a82306e7f0abe5a8ed9773161eabcf210 /arch | |
| parent | Merge branch 'x86-platform-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip (diff) | |
| parent | x86/tsc: Use topology functions (diff) | |
| download | linux-dev-ae465beeff5e7f49e029c7de02f055fe0dca4b19.tar.xz linux-dev-ae465beeff5e7f49e029c7de02f055fe0dca4b19.zip | |
Merge branch 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 timer update from Ingo Molnar:
"A single simplification of the x86 TSC code"
* 'x86-timers-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/tsc: Use topology functions
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/tsc.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c index 3d743da828d3..5a6cb4684e0f 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -1246,14 +1246,14 @@ void __init tsc_init(void) */ unsigned long calibrate_delay_is_known(void) { - int i, cpu = smp_processor_id(); + int sibling, cpu = smp_processor_id(); if (!tsc_disabled && !cpu_has(&cpu_data(cpu), X86_FEATURE_CONSTANT_TSC)) return 0; - for_each_online_cpu(i) - if (cpu_data(i).phys_proc_id == cpu_data(cpu).phys_proc_id) - return cpu_data(i).loops_per_jiffy; + sibling = cpumask_any_but(topology_core_cpumask(cpu), cpu); + if (sibling < nr_cpu_ids) + return cpu_data(sibling).loops_per_jiffy; return 0; } #endif |