[PATCH V3 08/10] perf/tools: Extend branch type classification
From: Anshuman Khandual <hidden>
Date: 2022-03-14 06:00:18
Also in:
linux-perf-users, lkml
Subsystem:
performance events subsystem, the rest · Maintainers:
Peter Zijlstra, Ingo Molnar, Arnaldo Carvalho de Melo, Namhyung Kim, Linus Torvalds
This updates the perf tool with generic branch type classification with new ABI extender place holder i.e PERF_BR_EXTEND_ABI, the new 4 bit branch type field i.e perf_branch_entry.new_type, new generic page fault related branch types and some arch specific branch types as added earlier in the kernel. 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 <redacted> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Thomas Gleixner <redacted> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Cc: linux-perf-users@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Anshuman Khandual <redacted> --- tools/include/uapi/linux/perf_event.h | 16 +++++++++++++++- tools/perf/util/branch.c | 3 ++- 2 files changed, 17 insertions(+), 2 deletions(-)
diff --git a/tools/include/uapi/linux/perf_event.h b/tools/include/uapi/linux/perf_event.h
index 26d8f0b5ac0d..d29280adc3c4 100644
--- a/tools/include/uapi/linux/perf_event.h
+++ b/tools/include/uapi/linux/perf_event.h@@ -255,9 +255,22 @@ enum { PERF_BR_IRQ = 12, /* irq */ PERF_BR_SERROR = 13, /* system error */ PERF_BR_NO_TX = 14, /* not in transaction */ + PERF_BR_EXTEND_ABI = 15, /* extend ABI */ PERF_BR_MAX, }; +enum { + PERF_BR_NEW_FAULT_ALGN = 0, /* Alignment fault */ + PERF_BR_NEW_FAULT_DATA = 1, /* Data fault */ + PERF_BR_NEW_FAULT_INST = 2, /* Inst fault */ + PERF_BR_NEW_ARCH_1 = 3, /* Architecture specific */ + PERF_BR_NEW_ARCH_2 = 4, /* Architecture specific */ + PERF_BR_NEW_ARCH_3 = 5, /* Architecture specific */ + PERF_BR_NEW_ARCH_4 = 6, /* Architecture specific */ + PERF_BR_NEW_ARCH_5 = 7, /* Architecture specific */ + PERF_BR_NEW_MAX, +}; + #define PERF_SAMPLE_BRANCH_PLM_ALL \ (PERF_SAMPLE_BRANCH_USER|\ PERF_SAMPLE_BRANCH_KERNEL|\
@@ -1372,7 +1385,8 @@ struct perf_branch_entry { abort:1, /* transaction abort */ cycles:16, /* cycle count to last branch */ type:4, /* branch type */ - reserved:40; + new_type:4, /* additional branch type */ + reserved:36; }; union perf_sample_weight {
diff --git a/tools/perf/util/branch.c b/tools/perf/util/branch.c
index abc673347bee..4bd52de0527c 100644
--- a/tools/perf/util/branch.c
+++ b/tools/perf/util/branch.c@@ -53,7 +53,8 @@ const char *branch_type_name(int type) "ERET", "IRQ", "SERROR", - "NO_TX" + "NO_TX", + "EXTEND_ABI" }; if (type >= 0 && type < PERF_BR_MAX)
--
2.25.1
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