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lib: (somewhat) structured logging support

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Apparently there's a bit a need for more verbose output in testcases,
mostly for debugging purposes. At least gem_reset_stats and pm_rps
have a verbose mode.

On top of that we're currently not taking advantage of piglit's "warn"
state all that much. But I think it might be useful for testcases which
are notorious for some kinds of spurious failures, like e.g. the really
nasty timing checks in kms_flip. If we demote some of them to just
warnings we could run the overall tests more often.

Hence this patchs adds a new igt_log function with the three levels DEBUG,
INFO and WARN. Plus a bunch of convenience helpers to keep the test
code tidy.

The level can be set through an enviroment vairable IGT_LOG_LEVEL with
info being the default. Also tests can look at the selected log level in
case they want to run costly debug functions only when needed.

Comments highly welcome, I plan to roll this out over tests which can
use it (not all, imo that's too much churn) once we've settled on the
interfaces/semantics.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Daniel Vetter
2014-02-12 15:19:15 +01:00
parent 60a24a22ba
commit eebdf7f920
2 changed files with 68 additions and 0 deletions
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lib/drmtest.c
+41
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@@ -937,6 +937,25 @@ out:
return ret;
}
enum igt_log_level igt_log_level = IGT_LOG_INFO;
static void common_init(void)
{
char *env = getenv("IGT_LOG_LEVEL");
if (!env)
return;
if (strcmp(env, "debug") == 0)
igt_log_level = IGT_LOG_DEBUG;
else if (strcmp(env, "info") == 0)
igt_log_level = IGT_LOG_INFO;
else if (strcmp(env, "warn") == 0)
igt_log_level = IGT_LOG_WARN;
else if (strcmp(env, "none") == 0)
igt_log_level = IGT_LOG_NONE;
}
void igt_subtest_init(int argc, char **argv)
{
int ret;
@@ -951,11 +970,15 @@ void igt_subtest_init(int argc, char **argv)
/* reset opt parsing */
optind = 1;
common_init();
}
void igt_simple_init(void)
{
print_version();
common_init();
}
/*
@@ -1387,6 +1410,24 @@ void igt_skip_on_simulation(void)
igt_require(!igt_run_in_simulation());
}
void igt_log(enum igt_log_level level, const char *format, ...)
{
va_list args;
assert(format);
if (igt_log_level > level)
return;
va_start(args, format);
if (level == IGT_LOG_WARN) {
fflush(stdout);
vfprintf(stderr, format, args);
} else
vprintf(format, args);
va_end(args);
}
bool drmtest_dump_aub(void)
{
static int dump_aub = -1;