Make it possible to access the sub-GPU component load value from user space with the perfmon infrastructure.
Signed-off-by: Christian Gmeiner christian.gmeiner@gmail.com --- drivers/gpu/drm/etnaviv/etnaviv_perfmon.c | 79 +++++++++++++++++++++++ 1 file changed, 79 insertions(+)
diff --git a/drivers/gpu/drm/etnaviv/etnaviv_perfmon.c b/drivers/gpu/drm/etnaviv/etnaviv_perfmon.c index bafdfe49c1d8..d65d9af3a74a 100644 --- a/drivers/gpu/drm/etnaviv/etnaviv_perfmon.c +++ b/drivers/gpu/drm/etnaviv/etnaviv_perfmon.c @@ -120,6 +120,19 @@ static u32 hi_total_idle_cycle_read(struct etnaviv_gpu *gpu, return gpu_read(gpu, reg); }
+static u32 load_read(struct etnaviv_gpu *gpu, + const struct etnaviv_pm_domain *domain, + const struct etnaviv_pm_signal *signal) +{ + u32 load; + + spin_lock_bh(&gpu->loadavg_spinlock); + load = gpu->loadavg_percentage[signal->data]; + spin_unlock_bh(&gpu->loadavg_spinlock); + + return load; +} + static const struct etnaviv_pm_domain doms_3d[] = { { .name = "HI", @@ -419,6 +432,72 @@ static const struct etnaviv_pm_domain doms_3d[] = { &perf_reg_read } } + }, + { + .name = "LOAD", + .nr_signals = 12, + .signal = (const struct etnaviv_pm_signal[]) { + { + "FE", + 0, + &load_read + }, + { + "DE", + 1, + &load_read + }, + { + "PE", + 2, + &load_read + }, + { + "SH", + 3, + &load_read + }, + { + "PA", + 4, + &load_read + }, + { + "SE", + 5, + &load_read + }, + { + "RA", + 6, + &load_read + }, + { + "TX", + 7, + &load_read + }, + { + "VG", + 8, + &load_read + }, + { + "IM", + 9, + &load_read + }, + { + "FP", + 10, + &load_read + }, + { + "TS", + 11, + &load_read + } + } } };