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Date: Sun, 7 Dec 2014 22:50:01 -0800 From: tip-bot for Andi Kleen <tipbot@...or.com> To: linux-tip-commits@...r.kernel.org Cc: linux-kernel@...r.kernel.org, namhyung@...nel.org, jolsa@...hat.com, acme@...hat.com, mingo@...nel.org, hpa@...or.com, tglx@...utronix.de, ak@...ux.intel.com Subject: [tip:perf/core] perf tools: Allow to force redirect pr_debug to stderr. Commit-ID: f78eaef0e0493f6068777a246b9c4d9d5cf2b7aa Gitweb: http://git.kernel.org/tip/f78eaef0e0493f6068777a246b9c4d9d5cf2b7aa Author: Andi Kleen <ak@...ux.intel.com> AuthorDate: Fri, 21 Nov 2014 13:38:00 -0800 Committer: Arnaldo Carvalho de Melo <acme@...hat.com> 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@...ux.intel.com> Cc: Jiri Olsa <jolsa@...hat.com> Cc: Namhyung Kim <namhyung@...nel.org> Link: http://lkml.kernel.org/r/1416605880-25055-2-git-send-email-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.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, } }; -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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