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7111ffff60
The __hpp__sort_acc() sorts entries using callchain depth in order to
put callers above in children mode. But it assumed the callchain order
was callee-first. Now default (for children) is caller-first so the
order of entries is reverted.
For example, consider following case:
$ perf report --no-children
..l
# Overhead Command Shared Object Symbol
# ........ ....... ................... ..........................
#
99.44% a.out a.out [.] main
|
---main
__libc_start_main
_start
Then children mode should show 'start' above '__libc_start_main' since
it's the caller (parent) of the __libc_start_main. But it's reversed:
# Children Self Command Shared Object Symbol
# ........ ........ ....... ............... .....................
#
99.61% 0.00% a.out libc-2.25.so [.] __libc_start_main
99.61% 0.00% a.out a.out [.] _start
99.54% 99.44% a.out a.out [.] main
This patch fixes it.
# Children Self Command Shared Object Symbol
# ........ ........ ....... ............... .....................
#
99.61% 0.00% a.out a.out [.] _start
99.61% 0.00% a.out libc-2.25.so [.] __libc_start_main
99.54% 99.44% a.out a.out [.] main
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Milian Wolff <milian.wolff@kdab.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Yao Jin <yao.jin@linux.intel.com>
Cc: kernel-team@lge.com
Link: http://lkml.kernel.org/r/20170524062129.32529-8-namhyung@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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