perf tools: Fix copyfile_offset update of output offset
authorJiri Olsa <jolsa@kernel.org>
Tue, 9 Jan 2018 13:39:23 +0000 (14:39 +0100)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Thu, 12 Apr 2018 10:32:21 +0000 (12:32 +0200)
commit6a88a999c45db9500ab16656a9a15fa601403e17
tree8fda3231b8b0aa67df3f82a982f38452b4e5b452
parent7cae67e31292ea0c257e944ba23854d089e860f6
perf tools: Fix copyfile_offset update of output offset

[ Upstream commit fa1195ccc0af2d121abe0fe266a1caee8c265eea ]

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>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
tools/perf/util/util.c