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Subject[PATCH 2/2] perf, tools: Allow to force redirect pr_debug to stderr.
Date
From: Andi Kleen <ak@linux.intel.com>

When debugging the tui browser I find it useful to
redirect the debug log into a file. Currently it's always
forced to the message line.

Add an option to force it to stderr. Then it can be
easily redirected.

Signed-off-by: Andi Kleen <ak@linux.intel.com>
---
tools/perf/util/debug.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/perf/util/debug.c b/tools/perf/util/debug.c
index ba357f3..ad60b2f 100644
--- a/tools/perf/util/debug.c
+++ b/tools/perf/util/debug.c
@@ -19,13 +19,14 @@
int verbose;
bool dump_trace = false, quiet = false;
int debug_ordered_events;
+static int redirect_to_stderr;

static int _eprintf(int level, int var, const char *fmt, va_list args)
{
int ret = 0;

if (var >= level) {
- if (use_browser >= 1)
+ if (use_browser >= 1 && !redirect_to_stderr)
ui_helpline__vshow(fmt, args);
else
ret = vfprintf(stderr, fmt, args);
@@ -145,6 +146,7 @@ static struct debug_variable {
} debug_variables[] = {
{ .name = "verbose", .ptr = &verbose },
{ .name = "ordered-events", .ptr = &debug_ordered_events},
+ { .name = "stderr", .ptr = &redirect_to_stderr},
{ .name = NULL, }
};

--
1.9.3


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