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| author |   Adrian Hunter <adrian.hunter@intel.com> | 2014-07-22 16:17:35 +0300 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2014-07-23 11:57:27 -0300 |
| commit | 6d363459d7e6e05f0afeb8e36e6de262a4964694 (patch) | |
| tree | 01cdc30704115b5332bdd2b6f8f4f7a6ca3111f7 /tools/perf/util/dso.c | |
| parent | perf tools: Move rdtsc() function (diff) | |
| download | linux-dev-6d363459d7e6e05f0afeb8e36e6de262a4964694.tar.xz linux-dev-6d363459d7e6e05f0afeb8e36e6de262a4964694.zip | |
perf tools: Add dso__data_size()
Add a function to return the dso data size, for use in estimating the
size an instruction cache.
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
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/r/1406035081-14301-27-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/dso.c')
| -rw-r--r-- | tools/perf/util/dso.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index 84e4a0546a31..e657d86e82b9 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -544,6 +544,28 @@ static int data_file_size(struct dso *dso) return 0; } +/** + * dso__data_size - Return dso data size + * @dso: dso object + * @machine: machine object + * + * Return: dso data size + */ +off_t dso__data_size(struct dso *dso, struct machine *machine) +{ + int fd; + + fd = dso__data_fd(dso, machine); + if (fd < 0) + return fd; + + if (data_file_size(dso)) + return -1; + + /* For now just estimate dso data size is close to file size */ + return dso->data.file_size; +} + static ssize_t data_read_offset(struct dso *dso, u64 offset, u8 *data, ssize_t size) { |