Commit-ID: f78eaef0e0493f6068777a246b9c4d9d5cf2b7aa
Gitweb: http://git.kernel.org/tip/f78eaef0e0493f6068777a246b9c4d9d5cf2b7aa
Author: Andi Kleen <ak@xxxxxxxxxxxxxxx>
AuthorDate: Fri, 21 Nov 2014 13:38:00 -0800
Committer: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
CommitDate: Mon, 24 Nov 2014 18:03:48 -0300
perf tools: Allow to force redirect pr_debug to stderr.
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.
Example:
[root@zoo ~]# perf --debug stderr report -vv 2> /tmp/debug
[root@zoo ~]# tail /tmp/debug
dso open failed, mmap: No such file or directory
dso open failed, mmap: No such file or directory
dso open failed, mmap: No such file or directory
dso open failed, mmap: No such file or directory
dso open failed, mmap: No such file or directory
Using /root/.debug/.build-id/4e/841948927029fb650132253642d5dbb2c1fb93 for symbols
Failed to open /tmp/perf-8831.map, continuing without symbols
Failed to open /tmp/perf-12721.map, continuing without symbols
Failed to open /tmp/perf-6966.map, continuing without symbols
Failed to open /tmp/perf-8802.map, continuing without symbols
[root@zoo ~]#
Signed-off-by: Andi Kleen <ak@xxxxxxxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: Namhyung Kim <namhyung@xxxxxxxxxx>
Link: http://lkml.kernel.org/r/1416605880-25055-2-git-send-email-andi@xxxxxxxxxxxxxx
Signed-off-by: Arnaldo Carvalho de Melo <acme@xxxxxxxxxx>
---
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, }
};
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