UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

drm/i915/selftests: Show the full scaling curve on failure 

If we detect that the RPS end points do not scale perfectly, take the
time to measure all the in between values as well. We are aborting the
test, so we might as well spend the available time gathering critical
debug information instead.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Reviewed-by: Mika Kuoppala <mika.kuoppala@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200421124636.22554-1-chris@chris-wilson.co.uk
This commit is contained in:
Chris Wilson 2020-04-21 13:46:36 +01:00
parent 74f103928d
commit 4ea6b1c456
1 changed files with 40 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

40
drivers/gpu/drm/i915/gt/selftest_rps.c
View File

@ -484,11 +484,31 @@ int live_rps_frequency_cs(void *arg)
if (!scaled_within(max.freq * min.count,
min.freq * max.count,
2, 3)) {
int f;
pr_err("%s: CS did not scale with frequency! scaled min:%llu, max:%llu\n",
engine->name,
max.freq * min.count,
min.freq * max.count);
show_pcu_config(rps);
for (f = min.freq + 1; f <= rps->max_freq; f++) {
int act = f;
u64 count;
count = measure_cs_frequency_at(rps, engine, &act);
if (act < f)
break;
pr_info("%s: %x:%uMHz: %lluKHz [%d%%]\n",
engine->name,
act, intel_gpu_freq(rps, act), count,
(int)DIV64_U64_ROUND_CLOSEST(100 * min.freq * count,
act * min.count));
f = act; /* may skip ahead [pcu granularity] */
}
err = -EINVAL;
}
@ -593,11 +613,31 @@ int live_rps_frequency_srm(void *arg)
if (!scaled_within(max.freq * min.count,
min.freq * max.count,
1, 2)) {
int f;
pr_err("%s: CS did not scale with frequency! scaled min:%llu, max:%llu\n",
engine->name,
max.freq * min.count,
min.freq * max.count);
show_pcu_config(rps);
for (f = min.freq + 1; f <= rps->max_freq; f++) {
int act = f;
u64 count;
count = measure_frequency_at(rps, cntr, &act);
if (act < f)
break;
pr_info("%s: %x:%uMHz: %lluKHz [%d%%]\n",
engine->name,
act, intel_gpu_freq(rps, act), count,
(int)DIV64_U64_ROUND_CLOSEST(100 * min.freq * count,
act * min.count));
f = act; /* may skip ahead [pcu granularity] */
}
err = -EINVAL;
}