diff options
| author | Ian Rogers <irogers@google.com> | 2023-06-23 08:10:05 -0700 |
|---|---|---|
| committer | Namhyung Kim <namhyung@kernel.org> | 2023-06-29 22:13:15 -0700 |
| commit | 4a4a9bf9075fbc753ab20f05347fd1482d4801e4 (patch) | |
| tree | 9668cb52d0f115266da702507c96630077b6fdab /tools/perf/util/expr.c | |
| parent | 36cee69f572c72610da2681a358318d0dc9740b0 (diff) | |
perf expr: Add has_event function
Some events are dependent on firmware/kernel enablement. Allow such
events to be detected when the metric is parsed so that the metric's
event parsing doesn't fail.
Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Namhyung Kim <namhyung@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Eduard Zingerman <eddyz87@gmail.com>
Cc: Sohom Datta <sohomdatta1@gmail.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Edward Baker <edward.baker@intel.com>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Samantha Alt <samantha.alt@intel.com>
Cc: Weilin Wang <weilin.wang@intel.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Andrii Nakryiko <andrii@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Jing Zhang <renyu.zj@linux.alibaba.com>
Cc: Kajol Jain <kjain@linux.ibm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Zhengjun Xing <zhengjun.xing@linux.intel.com>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Ingo Molnar <mingo@redhat.com>
Link: https://lore.kernel.org/r/20230623151016.4193660-2-irogers@google.com
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Diffstat (limited to 'tools/perf/util/expr.c')
| -rw-r--r-- | tools/perf/util/expr.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/tools/perf/util/expr.c b/tools/perf/util/expr.c index f4e52919324e..4814262e3805 100644 --- a/tools/perf/util/expr.c +++ b/tools/perf/util/expr.c @@ -8,6 +8,7 @@ #include "cpumap.h" #include "cputopo.h" #include "debug.h" +#include "evlist.h" #include "expr.h" #include "expr-bison.h" #include "expr-flex.h" @@ -474,3 +475,23 @@ out: pr_debug2("literal: %s = %f\n", literal, result); return result; } + +/* Does the event 'id' parse? Determine via ctx->ids if possible. */ +double expr__has_event(const struct expr_parse_ctx *ctx, bool compute_ids, const char *id) +{ + struct evlist *tmp; + double ret; + + if (hashmap__find(ctx->ids, id, /*value=*/NULL)) + return 1.0; + + if (!compute_ids) + return 0.0; + + tmp = evlist__new(); + if (!tmp) + return NAN; + ret = parse_event(tmp, id) ? 0 : 1; + evlist__delete(tmp); + return ret; +} |