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| author |   Jiri Olsa <jolsa@kernel.org> | 2018-01-09 14:39:23 +0100 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-01-12 16:57:16 -0300 |
| commit | fa1195ccc0af2d121abe0fe266a1caee8c265eea (patch) | |
| tree | b90fc93eb635be6a1901d2c3e8773cff6d59afaa /tools/perf/util/util.c | |
| parent | perf trace: No need to set PERF_SAMPLE_IDENTIFIER explicitely (diff) | |
| download | linux-dev-fa1195ccc0af2d121abe0fe266a1caee8c265eea.tar.xz linux-dev-fa1195ccc0af2d121abe0fe266a1caee8c265eea.zip | |
perf tools: Fix copyfile_offset update of output offset
We need to increase output offset in each iteration, not decrease it as
we currently do.
I guess we were lucky to finish in most cases in first iteration, so the
bug never showed. However it shows a lot when working with big (~4GB)
size data.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Fixes: 9c9f5a2f1944 ("perf tools: Introduce copyfile_offset() function")
Link: http://lkml.kernel.org/r/20180109133923.25406-1-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/util.c')
| -rw-r--r-- | tools/perf/util/util.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c index a789f952b3e9..443892dabedb 100644 --- a/tools/perf/util/util.c +++ b/tools/perf/util/util.c @@ -210,7 +210,7 @@ static int copyfile_offset(int ifd, loff_t off_in, int ofd, loff_t off_out, u64 size -= ret; off_in += ret; - off_out -= ret; + off_out += ret; } munmap(ptr, off_in + size); |