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| author | Kan Liang <kan.liang@linux.intel.com> | 2020-12-08 23:05:52 +0300 |
|---|---|---|
| committer | Peter Zijlstra <peterz@infradead.org> | 2020-12-09 19:08:59 +0300 |
| commit | c2208046bba6842dc232a600dc5cafc2fca41078 (patch) | |
| tree | 8c7fde96eda875ed00486a8438e95ff10e0dcc30 /arch | |
| parent | bd11952b400fdfdf3b017500ad6475f5b624d167 (diff) | |
| download | linux-c2208046bba6842dc232a600dc5cafc2fca41078.tar.xz | |
perf/x86/intel: Add Tremont Topdown support
Tremont has four L1 Topdown events, TOPDOWN_FE_BOUND.ALL,
TOPDOWN_BAD_SPECULATION.ALL, TOPDOWN_BE_BOUND.ALL and
TOPDOWN_RETIRING.ALL. They are available on GP counters.
Export them to sysfs and facilitate the perf stat tool.
$perf stat --topdown -- sleep 1
Performance counter stats for 'sleep 1':
retiring bad speculation frontend bound
backend bound
24.9% 16.8% 31.7%
26.6%
1.001224610 seconds time elapsed
0.001150000 seconds user
0.000000000 seconds sys
Signed-off-by: Kan Liang <kan.liang@linux.intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/1607457952-3519-1-git-send-email-kan.liang@linux.intel.com
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/events/intel/core.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/x86/events/intel/core.c b/arch/x86/events/intel/core.c index 6c0d18f8909d..d4569bfa83e3 100644 --- a/arch/x86/events/intel/core.c +++ b/arch/x86/events/intel/core.c @@ -1901,6 +1901,19 @@ static __initconst const u64 tnt_hw_cache_extra_regs }, }; +EVENT_ATTR_STR(topdown-fe-bound, td_fe_bound_tnt, "event=0x71,umask=0x0"); +EVENT_ATTR_STR(topdown-retiring, td_retiring_tnt, "event=0xc2,umask=0x0"); +EVENT_ATTR_STR(topdown-bad-spec, td_bad_spec_tnt, "event=0x73,umask=0x6"); +EVENT_ATTR_STR(topdown-be-bound, td_be_bound_tnt, "event=0x74,umask=0x0"); + +static struct attribute *tnt_events_attrs[] = { + EVENT_PTR(td_fe_bound_tnt), + EVENT_PTR(td_retiring_tnt), + EVENT_PTR(td_bad_spec_tnt), + EVENT_PTR(td_be_bound_tnt), + NULL, +}; + static struct extra_reg intel_tnt_extra_regs[] __read_mostly = { /* must define OFFCORE_RSP_X first, see intel_fixup_er() */ INTEL_UEVENT_EXTRA_REG(0x01b7, MSR_OFFCORE_RSP_0, 0x800ff0ffffff9fffull, RSP_0), @@ -5174,6 +5187,7 @@ __init int intel_pmu_init(void) x86_pmu.lbr_pt_coexist = true; x86_pmu.flags |= PMU_FL_HAS_RSP_1; x86_pmu.get_event_constraints = tnt_get_event_constraints; + td_attr = tnt_events_attrs; extra_attr = slm_format_attr; pr_cont("Tremont events, "); name = "Tremont"; |