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perf, intel: Try alternative OFFCORE encodings

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Since the OFFCORE registers are fully symmetric, try the other one
when the specified one is already in use.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1306141897.18455.8.camel@twins
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra
2011-05-23 11:08:15 +02:00
committed by Ingo Molnar
parent ee89cbc2d4
commit b79e8941fb
2 changed files with 41 additions and 8 deletions
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5
arch/x86/kernel/cpu/perf_event.c
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@@ -327,9 +327,12 @@ struct x86_pmu {
* Extra registers for events
*/
struct extra_reg *extra_regs;
bool regs_no_ht_sharing;
unsigned int er_flags;
};
#define ERF_NO_HT_SHARING 1
#define ERF_HAS_RSP_1 2
static struct x86_pmu x86_pmu __read_mostly;
static DEFINE_PER_CPU(struct cpu_hw_events, cpu_hw_events) = {