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perf/x86: Add Haswell specific transaction flag reporting

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In the PEBS handler report the transaction flags using the new
generic transaction flags facility. Most of them come from
the "tsx_tuning" field in PEBSv2, but the abort code is derived
from the RAX register reported in the PEBS record.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1379688044-14173-3-git-send-email-andi@firstfloor.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
This commit is contained in:
Andi Kleen 2013-09-20 07:40:40 -07:00 committed by Ingo Molnar
parent fdfbbd07e9
commit a405bad5ad
1 changed files with 20 additions and 4 deletions
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24
arch/x86/kernel/cpu/perf_event_intel_ds.c
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@ -206,6 +206,8 @@ union hsw_tsx_tuning {
u64 value;
};
#define PEBS_HSW_TSX_FLAGS 0xff00000000ULL
void init_debug_store_on_cpu(int cpu)
{
struct debug_store *ds = per_cpu(cpu_hw_events, cpu).ds;
@ -807,6 +809,16 @@ static inline u64 intel_hsw_weight(struct pebs_record_hsw *pebs)
return 0;
}
static inline u64 intel_hsw_transaction(struct pebs_record_hsw *pebs)
{
u64 txn = (pebs->tsx_tuning & PEBS_HSW_TSX_FLAGS) >> 32;
/* For RTM XABORTs also log the abort code from AX */
if ((txn & PERF_TXN_TRANSACTION) && (pebs->ax & 1))
txn |= ((pebs->ax >> 24) & 0xff) << PERF_TXN_ABORT_SHIFT;
return txn;
}
static void __intel_pmu_pebs_event(struct perf_event *event,
struct pt_regs *iregs, void *__pebs)
{
@ -885,10 +897,14 @@ static void __intel_pmu_pebs_event(struct perf_event *event,
x86_pmu.intel_cap.pebs_format >= 1)
data.addr = pebs->dla;
/* Only set the TSX weight when no memory weight was requested. */
if ((event->attr.sample_type & PERF_SAMPLE_WEIGHT) && !fll &&
(x86_pmu.intel_cap.pebs_format >= 2))
data.weight = intel_hsw_weight(pebs);
if (x86_pmu.intel_cap.pebs_format >= 2) {
/* Only set the TSX weight when no memory weight. */
if ((event->attr.sample_type & PERF_SAMPLE_WEIGHT) && !fll)
data.weight = intel_hsw_weight(pebs);
if (event->attr.sample_type & PERF_SAMPLE_TRANSACTION)
data.txn = intel_hsw_transaction(pebs);
}
if (has_branch_stack(event))
data.br_stack = &cpuc->lbr_stack;