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author | Anshuman Khandual <anshuman.khandual@arm.com> | 2022-08-24 07:48:20 +0300 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-10-04 14:55:20 +0300 |
commit | 0ddea8e2a0c20ff32a28ef21574f704d8f4699a2 (patch) | |
tree | cd720f326cec3491ed0a8e27a8a87fb875785976 /tools/perf/util/branch.h | |
parent | 1c96b6e45f140a4a43b1e831907e250e6302067c (diff) | |
download | linux-0ddea8e2a0c20ff32a28ef21574f704d8f4699a2.tar.xz |
perf branch: Extend branch type classification
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.
Committer note:
Add an extra entry to the branch_type_name array to cope with
PERF_BR_EXTEND_ABI, to address build warnings on some compiler/systems,
like:
75 8.89 ubuntu:20.04-x-powerpc64el : FAIL gcc version 10.3.0 (Ubuntu 10.3.0-1ubuntu1~20.04)
inlined from 'branch_type_stat_display' at util/branch.c:152:4:
/usr/powerpc64le-linux-gnu/include/bits/stdio2.h:100:10: error: '%8s' directive argument is null [-Werror=format-overflow=]
100 | return __fprintf_chk (__stream, __USE_FORTIFY_LEVEL - 1, __fmt,
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
101 | __va_arg_pack ());
| ~~~~~~~~~~~~~~~~~
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@arm.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Robin Murphy <robin.murphy@arm.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Suzuki Poulouse <suzuki.poulose@arm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Link: https://lore.kernel.org/r/20220824044822.70230-7-anshuman.khandual@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/branch.h')
-rw-r--r-- | tools/perf/util/branch.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/tools/perf/util/branch.h b/tools/perf/util/branch.h index 17b2ccc61094..8d251b35428a 100644 --- a/tools/perf/util/branch.h +++ b/tools/perf/util/branch.h @@ -24,7 +24,8 @@ struct branch_flags { u64 abort:1; u64 cycles:16; u64 type:4; - u64 reserved:40; + u64 new_type:4; + u64 reserved:36; }; }; }; @@ -72,6 +73,7 @@ static inline struct branch_entry *perf_sample__branch_entries(struct perf_sampl struct branch_type_stat { bool branch_to; u64 counts[PERF_BR_MAX]; + u64 new_counts[PERF_BR_NEW_MAX]; u64 cond_fwd; u64 cond_bwd; u64 cross_4k; @@ -82,6 +84,8 @@ void branch_type_count(struct branch_type_stat *st, struct branch_flags *flags, u64 from, u64 to); const char *branch_type_name(int type); +const char *branch_new_type_name(int new_type); +const char *get_branch_type(struct branch_entry *e); void branch_type_stat_display(FILE *fp, struct branch_type_stat *st); int branch_type_str(struct branch_type_stat *st, char *bf, int bfsize); |