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| author | Jiri Olsa <jolsa@kernel.org> | 2019-01-10 13:12:58 +0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-01-21 21:15:57 +0300 |
| commit | 82715eb184c55b5097c8f1022f54303c2ddbc329 (patch) | |
| tree | 61dd7af44983c619f7b56bd755efac7e2e8750cc | |
| parent | 4f5a473d79c755d2e325c9a8dab01804d5416923 (diff) | |
| download | linux-82715eb184c55b5097c8f1022f54303c2ddbc329.tar.xz | |
perf session: Add reader object
Add a session private reader object to encapsulate the reading of the
event data block. Starting with a 'fd' field.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20190110101301.6196-4-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| -rw-r--r-- | tools/perf/util/session.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index c8c2069fb01e..06379cc87f59 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -1820,11 +1820,17 @@ fetch_mmaped_event(struct perf_session *session, #define NUM_MMAPS 128 #endif +struct reader { + int fd; +}; + static int __perf_session__process_events(struct perf_session *session) { + struct reader rd = { + .fd = perf_data__fd(session->data), + }; struct ordered_events *oe = &session->ordered_events; struct perf_tool *tool = session->tool; - int fd = perf_data__fd(session->data); u64 data_offset = session->header.data_offset; u64 data_size = session->header.data_size; u64 head, page_offset, file_offset, file_pos, size; @@ -1864,7 +1870,7 @@ static int __perf_session__process_events(struct perf_session *session) mmap_flags = MAP_PRIVATE; } remap: - buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, fd, + buf = mmap(NULL, mmap_size, mmap_prot, mmap_flags, rd.fd, file_offset); if (buf == MAP_FAILED) { pr_err("failed to mmap file\n"); |