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Subject[PATCH] tracing: branch tracer, tweak output

a small detail:

> For example:
>
> bash-3471 [003] 357.014755: [INCORRECT] sched_info_dequeued:sched_stats.h:177
> bash-3471 [003] 357.014756: [correct] update_curr:sched_fair.c:489
> bash-3471 [003] 357.014758: [correct] calc_delta_fair:sched_fair.c:411
> bash-3471 [003] 357.014759: [correct] account_group_exec_runtime:sched_stats.h:356
> bash-3471 [003] 357.014761: [correct] update_curr:sched_fair.c:489
> bash-3471 [003] 357.014763: [INCORRECT] calc_delta_fair:sched_fair.c:411
> bash-3471 [003] 357.014765: [correct] calc_delta_mine:sched.c:1279

it's always good to have such fields aligned vertically. Something
like this would be shorter and visually much easier to parse:

bash-3471 [003] 357.014755: [ MISS ] sched_info_dequeued:sched_stats.h:177
bash-3471 [003] 357.014756: [ .... ] update_curr:sched_fair.c:489
bash-3471 [003] 357.014758: [ .... ] calc_delta_fair:sched_fair.c:411

any objections against the patch below which implements this?

Ingo

----------->
From f88c4ae9f8c3939bee4337c75c7a673b5de7a8a7 Mon Sep 17 00:00:00 2001
From: Ingo Molnar <mingo@elte.hu>
Date: Wed, 12 Nov 2008 11:55:41 +0100
Subject: [PATCH] tracing: branch tracer, tweak output

Impact: modify the tracer output, to make it a bit easier to read

Change the output from:

> bash-3471 [003] 357.014755: [INCORRECT] sched_info_dequeued:sched_stats.h:177
> bash-3471 [003] 357.014756: [correct] update_curr:sched_fair.c:489
> bash-3471 [003] 357.014758: [correct] calc_delta_fair:sched_fair.c:411

to:

> bash-3471 [003] 357.014755: [ MISS ] sched_info_dequeued:sched_stats.h:177
> bash-3471 [003] 357.014756: [ .... ] update_curr:sched_fair.c:489
> bash-3471 [003] 357.014758: [ .... ] calc_delta_fair:sched_fair.c:411

it's good to have fields aligned vertically, and the only important
information is a prediction miss, so display only that information.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
---
kernel/trace/trace.c | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 83d3863..728a46e 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -1657,7 +1657,7 @@ print_lat_fmt(struct trace_iterator *iter, unsigned int trace_idx, int cpu)
trace_assign_type(field, entry);

trace_seq_printf(s, "[%s] %s:%s:%d\n",
- field->correct ? "correct" : "INCORRECT",
+ field->correct ? " .... " : " MISS ",
field->func,
field->file,
field->line);
@@ -1808,7 +1808,7 @@ static enum print_line_t print_trace_fmt(struct trace_iterator *iter)
trace_assign_type(field, entry);

trace_seq_printf(s, "[%s] %s:%s:%d\n",
- field->correct ? "correct" : "INCORRECT",
+ field->correct ? " .... " : " MISS ",
field->func,
field->file,
field->line);

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