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| author | Andi Kleen <ak@linux.intel.com> | 2010-11-18 11:47:31 +0100 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2010-11-26 15:14:56 +0100 |
| commit | 5ef428c4b5950dddce7311e84321abb3aff7ebb0 (patch) | |
| tree | cb35ff5e913097d78577ec9bf615ab7de4eac5c1 /arch | |
| parent | 963988262c3c8f4234f64a0dde59446a295e07bb (diff) | |
| download | blackbird-op-linux-5ef428c4b5950dddce7311e84321abb3aff7ebb0.tar.gz blackbird-op-linux-5ef428c4b5950dddce7311e84321abb3aff7ebb0.zip | |
x86: Set cpu masks before calling CPU_STARTING notifiers
When booting up a CPU set the various topology masks before
calling the CPU_STARTING notifier. This way the notifier
can actually use the masks.
This is needed for a perf change.
Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <1290077254-12165-2-git-send-email-andi@firstfloor.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kernel/smpboot.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index f0a0624eea55..68f61ac632e1 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -281,6 +281,13 @@ static void __cpuinit smp_callin(void) */ smp_store_cpu_info(cpuid); + /* + * This must be done before setting cpu_online_mask + * or calling notify_cpu_starting. + */ + set_cpu_sibling_map(raw_smp_processor_id()); + wmb(); + notify_cpu_starting(cpuid); /* @@ -316,10 +323,6 @@ notrace static void __cpuinit start_secondary(void *unused) */ check_tsc_sync_target(); - /* This must be done before setting cpu_online_mask */ - set_cpu_sibling_map(raw_smp_processor_id()); - wmb(); - /* * We need to hold call_lock, so there is no inconsistency * between the time smp_call_function() determines number of |
