diff options
| author | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2017-10-10 08:22:30 +0100 |
|---|---|---|
| committer | Tvrtko Ursulin <tvrtko.ursulin@intel.com> | 2017-11-22 11:19:14 +0000 |
| commit | 273e66baef8bf930959c503041b68411bb42ff80 (patch) | |
| tree | f5e331f8979540cd1488597c491c5380fcd55f4a /lib/igt_perf.c | |
| parent | 0d8385a7ad670e96dadef6e04e7541a64b637406 (diff) | |
intel-gpu-overlay: Use RAPL PMU for power reading
Wire up to the RAPL PMU for GPU energy readings.
The only complication is that we have to add code to parse:
# cat /sys/devices/power/events/energy-gpu.scale
2.3283064365386962890625e-10
v2: Link with -lm.
v3: strtod can handle scientific notation, even though my initial
reading of the man page did not spot that. (Chris Wilson)
v4: Meson fix.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Diffstat (limited to 'lib/igt_perf.c')
| -rw-r--r-- | lib/igt_perf.c | 16 |
1 files changed, 12 insertions, 4 deletions
diff --git a/lib/igt_perf.c b/lib/igt_perf.c index 20847430..0221461e 100644 --- a/lib/igt_perf.c +++ b/lib/igt_perf.c @@ -27,11 +27,12 @@ uint64_t i915_type_id(void) return strtoull(buf, NULL, 0); } -static int _perf_open(uint64_t config, int group, uint64_t format) +static int +_perf_open(uint64_t type, uint64_t config, int group, uint64_t format) { struct perf_event_attr attr = { }; - attr.type = i915_type_id(); + attr.type = type; if (attr.type == 0) return -ENOENT; @@ -46,11 +47,18 @@ static int _perf_open(uint64_t config, int group, uint64_t format) int perf_i915_open(uint64_t config) { - return _perf_open(config, -1, PERF_FORMAT_TOTAL_TIME_ENABLED); + return _perf_open(i915_type_id(), config, -1, + PERF_FORMAT_TOTAL_TIME_ENABLED); } int perf_i915_open_group(uint64_t config, int group) { - return _perf_open(config, group, + return _perf_open(i915_type_id(), config, group, PERF_FORMAT_TOTAL_TIME_ENABLED | PERF_FORMAT_GROUP); } + +int igt_perf_open(uint64_t type, uint64_t config) +{ + return _perf_open(type, config, -1, + PERF_FORMAT_TOTAL_TIME_ENABLED); +} |