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author | Namhyung Kim <namhyung@kernel.org> | 2016-09-12 06:19:52 (GMT) |
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committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2016-09-12 14:10:26 (GMT) |
commit | d9ea48bc4e7cc297ca1073fa3f90ed80d964b7b4 (patch) | |
tree | 0aaed7d243bf2e5ea218e3cc0952dc0617d6304d /tools/perf/MANIFEST | |
parent | 7a023fd239498edd269838784f12888147d970da (diff) | |
download | linux-d9ea48bc4e7cc297ca1073fa3f90ed80d964b7b4.tar.xz |
perf hists browser: Fix event group display
Milian reported that the event group on TUI shows duplicated overhead.
This was due to a bug on calculating hpp->buf position. The
hpp_advance() was called from __hpp__slsmg_color_printf() on TUI but
it's already called from the hpp__call_print_fn macro in __hpp__fmt().
The end result is that the print function returns number of bytes it
printed but the buffer advanced twice of the length.
This is generally not a problem since it doesn't need to access the
buffer again. But with event group, overhead needs to be printed
multiple times and hist_entry__snprintf_alignment() tries to fill the
space with buffer after it printed. So it (brokenly) showed the last
overhead again.
The bug was there from the beginning, but I think it's only revealed
when the alignment function was added.
Reported-by: Milian Wolff <milian.wolff@kdab.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Fixes: 89fee7094323 ("perf hists: Do column alignment on the format iterator")
Link: http://lkml.kernel.org/r/20160912061958.16656-2-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/MANIFEST')
0 files changed, 0 insertions, 0 deletions