Messages in this thread Patch in this message | | | From | Kim Phillips <> | Subject | [PATCH 2/4] perf vendor events amd: Add ITLB Instruction Fetch Hits event for zen1 | Date | Tue, 1 Sep 2020 17:09:42 -0500 |
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The ITLB Instruction Fetch Hits event isn't documented even in later zen1 PPRs, but it seems to count correctly on zen1 hardware.
Add it to zen1 group so zen1 users can use the upcoming IC Fetch Miss Ratio Metric.
The IF1G, 1IF2M, IF4K (Instruction fetches to a 1 GB, 2 MB, and 4K page) unit masks are not added because unlike zen2 hardware, zen1 hardware counts all its unit masks with a 0 unit mask according to the old convention:
zen1$ perf stat -e cpu/event=0x94/,cpu/event=0x94,umask=0xff/ sleep 1
Performance counter stats for 'sleep 1':
211,318 cpu/event=0x94/u 211,318 cpu/event=0x94,umask=0xff/u
Rome/zen2:
zen2$ perf stat -e cpu/event=0x94/,cpu/event=0x94,umask=0xff/ sleep 1
Performance counter stats for 'sleep 1':
0 cpu/event=0x94/u 190,744 cpu/event=0x94,umask=0xff/u
Signed-off-by: Kim Phillips <kim.phillips@amd.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Arnaldo Carvalho de Melo <acme@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Vijay Thakkar <vijaythakkar@me.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: John Garry <john.garry@huawei.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Yunfeng Ye <yeyunfeng@huawei.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: "Martin Liška" <mliska@suse.cz> Cc: Borislav Petkov <bp@suse.de> Cc: Jon Grimm <jon.grimm@amd.com> Cc: Martin Jambor <mjambor@suse.cz> Cc: Michael Petlan <mpetlan@redhat.com> Cc: William Cohen <wcohen@redhat.com> Cc: Stephane Eranian <eranian@google.com> Cc: Ian Rogers <irogers@google.com> Cc: linux-perf-users@vger.kernel.org Cc: linux-kernel@vger.kernel.org --- tools/perf/pmu-events/arch/x86/amdzen1/branch.json | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/tools/perf/pmu-events/arch/x86/amdzen1/branch.json b/tools/perf/pmu-events/arch/x86/amdzen1/branch.json index a9943eeb8d6b..4ceb67a0db21 100644 --- a/tools/perf/pmu-events/arch/x86/amdzen1/branch.json +++ b/tools/perf/pmu-events/arch/x86/amdzen1/branch.json @@ -19,5 +19,10 @@ "EventName": "bp_de_redirect", "EventCode": "0x91", "BriefDescription": "Decoder Overrides Existing Branch Prediction (speculative)." + }, + { + "EventName": "bp_l1_tlb_fetch_hit", + "EventCode": "0x94", + "BriefDescription": "The number of instruction fetches that hit in the L1 ITLB." } ] -- 2.27.0
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