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| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2012-05-29 16:39:09 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2012-05-30 11:05:44 +0200 |
| commit | 9f646389aa7727a2fd8f9ae6337b92af9cfbc264 (patch) | |
| tree | 40d4cb6b69f2cd9dfecfa5246220688da9058958 /arch/x86 | |
| parent | 731a7378b81c2f5fa88ca1ae20b83d548d5613dc (diff) | |
| download | linux-9f646389aa7727a2fd8f9ae6337b92af9cfbc264.tar.gz linux-9f646389aa7727a2fd8f9ae6337b92af9cfbc264.tar.xz linux-9f646389aa7727a2fd8f9ae6337b92af9cfbc264.zip | |
sched/x86: Use cpu_llc_shared_mask(cpu) for coregroup_mask
Commit commit 8e7fbcbc2 ("sched: Remove stale power aware scheduling
remnants and dysfunctional knobs") made a boo-boo with removing the
power aware scheduling muck from the x86 topology bits.
We should unconditionally use the llc_shared mask for multi-core.
Reported-and-tested-by: Mike Galbraith <efault@gmx.de>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Borislav Petkov <bp@amd64.org>
Cc: Andreas Herrmann <andreas.herrmann3@amd.com>
Link: http://lkml.kernel.org/n/tip-lsksc2kfyeveb13avh327p0d@git.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/kernel/smpboot.c | 10 |
1 files changed, 1 insertions, 9 deletions
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index f56f96da77f5..fd019d78b1f4 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -410,15 +410,7 @@ void __cpuinit set_cpu_sibling_map(int cpu) /* maps the cpu to the sched domain representing multi-core */ const struct cpumask *cpu_coregroup_mask(int cpu) { - struct cpuinfo_x86 *c = &cpu_data(cpu); - /* - * For perf, we return last level cache shared map. - * And for power savings, we return cpu_core_map - */ - if (!(cpu_has(c, X86_FEATURE_AMD_DCM))) - return cpu_core_mask(cpu); - else - return cpu_llc_shared_mask(cpu); + return cpu_llc_shared_mask(cpu); } static void impress_friends(void) |