perf hists browser: Print overhead percent value for first-level callchain
Currently perf report on TUI doesn't print percent for first-level
callchain entry.
I guess it (wrongly) assumes that there's only a single callchain in the
first level.
This patch fixes it by handling the first level callchains same as
others - if it's not 100% it should print the percent value.
Also it'll affect other callchains in the other way around - if it's
100% (single callchain) it should not print the percentage.
Before:
- 30.95% 6.84% abc2 abc2 [.] a
- a
- 70.00% c
- 100.00% apic_timer_interrupt
smp_apic_timer_interrupt
local_apic_timer_interrupt
hrtimer_interrupt
...
+ 30.00% b
+ __libc_start_main
After:
- 30.95% 6.84% abc2 abc2 [.] a
- 77.90% a
- 70.00% c
- apic_timer_interrupt
smp_apic_timer_interrupt
local_apic_timer_interrupt
hrtimer_interrupt
...
+ 30.00% b
+ 22.10% __libc_start_main
Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1416816807-6495-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
1 file changed