diff options
| author | Kan Liang <kan.liang@linux.intel.com> | 2021-04-12 07:30:55 -0700 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2021-04-19 20:03:27 +0200 |
| commit | e11c1a7eb302ac8f6f47c18fa662546405a5fd83 (patch) | |
| tree | cdeca58fe80a3069d8cc42fbe6402c0a0e42d157 /arch/x86/events | |
| parent | b98567298bad891774054113690b30bd90d5738d (diff) | |
perf/x86: Factor out x86_pmu_show_pmu_cap
The PMU capabilities are different among hybrid PMUs. Perf should dump
the PMU capabilities information for each hybrid PMU.
Factor out x86_pmu_show_pmu_cap() which shows the PMU capabilities
information. The function will be reused later when registering a
dedicated hybrid PMU.
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Andi Kleen <ak@linux.intel.com>
Link: https://lkml.kernel.org/r/1618237865-33448-16-git-send-email-kan.liang@linux.intel.com
Diffstat (limited to 'arch/x86/events')
| -rw-r--r-- | arch/x86/events/core.c | 25 | ||||
| -rw-r--r-- | arch/x86/events/perf_event.h | 3 |
2 files changed, 19 insertions, 9 deletions
diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c index ed8dcfb22b2b..2e7ae529524d 100644 --- a/arch/x86/events/core.c +++ b/arch/x86/events/core.c @@ -1976,6 +1976,20 @@ static void _x86_pmu_read(struct perf_event *event) x86_perf_event_update(event); } +void x86_pmu_show_pmu_cap(int num_counters, int num_counters_fixed, + u64 intel_ctrl) +{ + pr_info("... version: %d\n", x86_pmu.version); + pr_info("... bit width: %d\n", x86_pmu.cntval_bits); + pr_info("... generic registers: %d\n", num_counters); + pr_info("... value mask: %016Lx\n", x86_pmu.cntval_mask); + pr_info("... max period: %016Lx\n", x86_pmu.max_period); + pr_info("... fixed-purpose events: %lu\n", + hweight64((((1ULL << num_counters_fixed) - 1) + << INTEL_PMC_IDX_FIXED) & intel_ctrl)); + pr_info("... event mask: %016Lx\n", intel_ctrl); +} + static int __init init_hw_perf_events(void) { struct x86_pmu_quirk *quirk; @@ -2036,15 +2050,8 @@ static int __init init_hw_perf_events(void) pmu.attr_update = x86_pmu.attr_update; - pr_info("... version: %d\n", x86_pmu.version); - pr_info("... bit width: %d\n", x86_pmu.cntval_bits); - pr_info("... generic registers: %d\n", x86_pmu.num_counters); - pr_info("... value mask: %016Lx\n", x86_pmu.cntval_mask); - pr_info("... max period: %016Lx\n", x86_pmu.max_period); - pr_info("... fixed-purpose events: %lu\n", - hweight64((((1ULL << x86_pmu.num_counters_fixed) - 1) - << INTEL_PMC_IDX_FIXED) & x86_pmu.intel_ctrl)); - pr_info("... event mask: %016Lx\n", x86_pmu.intel_ctrl); + x86_pmu_show_pmu_cap(x86_pmu.num_counters, x86_pmu.num_counters_fixed, + x86_pmu.intel_ctrl); if (!x86_pmu.read) x86_pmu.read = _x86_pmu_read; diff --git a/arch/x86/events/perf_event.h b/arch/x86/events/perf_event.h index d8c448bc837f..a3534e39ef15 100644 --- a/arch/x86/events/perf_event.h +++ b/arch/x86/events/perf_event.h @@ -1092,6 +1092,9 @@ void x86_pmu_enable_event(struct perf_event *event); int x86_pmu_handle_irq(struct pt_regs *regs); +void x86_pmu_show_pmu_cap(int num_counters, int num_counters_fixed, + u64 intel_ctrl); + extern struct event_constraint emptyconstraint; extern struct event_constraint unconstrained; |