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| author |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-09-11 19:24:23 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2012-09-11 19:24:23 -0300 |
| commit | 5555ded44698ed82ffa3d8742ec2994f695127bc (patch) | |
| tree | 223aabd7b662345fbfc54caeb721c521fbe23968 | |
| parent | perf sched: Use perf_tool as ancestor (diff) | |
| download | linux-dev-5555ded44698ed82ffa3d8742ec2994f695127bc.tar.xz linux-dev-5555ded44698ed82ffa3d8742ec2994f695127bc.zip | |
perf evsel: Introduce perf_evsel__{str,int}val methods
Wrappers to the libtraceevent routines, so that we can further reduce
the surface contact perf builtins have with it.
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mike Galbraith <efault@gmx.de>
Cc: Namhyung Kim <namhyung@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-rtmgzptvrifzjxqwb9vs6g1b@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/util/evsel.c | 35 | ||||
| -rw-r--r-- | tools/perf/util/evsel.h | 7 |
2 files changed, 42 insertions, 0 deletions
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 06f76441547a..1506ba0453f1 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -10,6 +10,7 @@ #include <byteswap.h> #include <linux/bitops.h> #include "asm/bug.h" +#include "event-parse.h" #include "evsel.h" #include "evlist.h" #include "util.h" @@ -1000,3 +1001,37 @@ int perf_event__synthesize_sample(union perf_event *event, u64 type, return 0; } + +char *perf_evsel__strval(struct perf_evsel *evsel, struct perf_sample *sample, + const char *name) +{ + struct format_field *field = pevent_find_field(evsel->tp_format, name); + int offset; + + if (!field) + return NULL; + + offset = field->offset; + + if (field->flags & FIELD_IS_DYNAMIC) { + offset = *(int *)(sample->raw_data + field->offset); + offset &= 0xffff; + } + + return sample->raw_data + offset; +} + +u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample, + const char *name) +{ + struct format_field *field = pevent_find_field(evsel->tp_format, name); + u64 val; + + if (!field) + return 0; + + val = pevent_read_number(evsel->tp_format->pevent, + sample->raw_data + field->offset, field->size); + return val; + +} diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h index 390690eb8781..dc40fe32210b 100644 --- a/tools/perf/util/evsel.h +++ b/tools/perf/util/evsel.h @@ -120,6 +120,13 @@ int perf_evsel__open(struct perf_evsel *evsel, struct cpu_map *cpus, struct thread_map *threads); void perf_evsel__close(struct perf_evsel *evsel, int ncpus, int nthreads); +struct perf_sample; + +char *perf_evsel__strval(struct perf_evsel *evsel, struct perf_sample *sample, + const char *name); +u64 perf_evsel__intval(struct perf_evsel *evsel, struct perf_sample *sample, + const char *name); + #define perf_evsel__match(evsel, t, c) \ (evsel->attr.type == PERF_TYPE_##t && \ evsel->attr.config == PERF_COUNT_##c) |