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author | 2014-07-17 12:55:00 +0200 | |
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committer | 2014-07-17 12:58:59 -0300 | |
commit | bbb2cea7e8dd496b41558df1a0ec9205497b7ebf (patch) | |
tree | 7a73131f1871315194c0a3a594c82b0946c3ca3d /tools/perf/util/debug.c | |
parent | perf tools: Factor eprintf to allow different debug variables (diff) | |
download | linux-bbb2cea7e8dd496b41558df1a0ec9205497b7ebf.tar.gz linux-bbb2cea7e8dd496b41558df1a0ec9205497b7ebf.tar.bz2 linux-bbb2cea7e8dd496b41558df1a0ec9205497b7ebf.zip |
perf tools: Add --debug optionto set debug variable
Adding --debug option as a way to setup debug variables. Starting with
support for verbose, more will come.
It's possible to use it now with report command:
$ perf --debug verbose ...
$ perf --debug verbose=2 ...
I'll need this support to add separated debug variable for ordered
events change in order to separate debug output out of standard verbose
stream.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@gmail.com>
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/20140717105500.GG516@krava.redhat.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/util/debug.c')
-rw-r--r-- | tools/perf/util/debug.c | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/tools/perf/util/debug.c b/tools/perf/util/debug.c index c208d6f56e63..71d419362634 100644 --- a/tools/perf/util/debug.c +++ b/tools/perf/util/debug.c @@ -105,3 +105,47 @@ void trace_event(union perf_event *event) } printf(".\n"); } + +static struct debug_variable { + const char *name; + int *ptr; +} debug_variables[] = { + { .name = "verbose", .ptr = &verbose }, + { .name = NULL, } +}; + +int perf_debug_option(const char *str) +{ + struct debug_variable *var = &debug_variables[0]; + char *vstr, *s = strdup(str); + int v = 1; + + vstr = strchr(s, '='); + if (vstr) + *vstr++ = 0; + + while (var->name) { + if (!strcmp(s, var->name)) + break; + var++; + } + + if (!var->name) { + pr_err("Unknown debug variable name '%s'\n", s); + free(s); + return -1; + } + + if (vstr) { + v = atoi(vstr); + /* + * Allow only values in range (0, 10), + * otherwise set 0. + */ + v = (v < 0) || (v > 10) ? 0 : v; + } + + *var->ptr = v; + free(s); + return 0; +} |