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perf diff: Add -F option to display formula for computation

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Adding -F option to display the formula for specified computation.

This is mainly to facilitate debugging, but can be useful anyway.

Signed-off-by: Jiri Olsa <jolsa@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1349448287-18919-7-git-send-email-jolsa@redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2012-10-05 16:44:45 +02:00 • committed by Arnaldo Carvalho de Melo
parent 61949b212e
commit ed279da2fc
5 changed files with 96 additions and 3 deletions
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24
tools/perf/ui/hist.c
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@ -359,6 +359,27 @@ static int hpp__entry_displ(struct perf_hpp *hpp,
return scnprintf(hpp->buf, hpp->size, fmt, buf);
}
static int hpp__header_formula(struct perf_hpp *hpp)
{
const char *fmt = symbol_conf.field_sep ? "%s" : "%70s";
return scnprintf(hpp->buf, hpp->size, fmt, "Formula");
}
static int hpp__width_formula(struct perf_hpp *hpp __maybe_unused)
{
return 70;
}
static int hpp__entry_formula(struct perf_hpp *hpp, struct hist_entry *he)
{
const char *fmt = symbol_conf.field_sep ? "%s" : "%-70s";
char buf[96] = " ";
perf_diff__formula(buf, sizeof(buf), he);
return scnprintf(hpp->buf, hpp->size, fmt, buf);
}
#define HPP__COLOR_PRINT_FNS(_name) \
.header = hpp__header_ ## _name, \
.width = hpp__width_ ## _name, \
@ -383,7 +404,8 @@ struct perf_hpp_fmt perf_hpp__format[] = {
{ .cond = false, HPP__PRINT_FNS(delta) },
{ .cond = false, HPP__PRINT_FNS(ratio) },
{ .cond = false, HPP__PRINT_FNS(wdiff) },
{ .cond = false, HPP__PRINT_FNS(displ) }
{ .cond = false, HPP__PRINT_FNS(displ) },
{ .cond = false, HPP__PRINT_FNS(formula) }
};
#undef HPP__COLOR_PRINT_FNS