[PATCH i-g-t v3 12/13] lib/igt_drm_clients: Record total cycles
Umesh Nerlige Ramappa
umesh.nerlige.ramappa at intel.com
Wed May 8 19:07:40 UTC 2024
On Wed, May 08, 2024 at 12:01:09PM -0700, Umesh Nerlige Ramappa wrote:
>On Fri, May 03, 2024 at 11:46:42PM -0700, Lucas De Marchi wrote:
>>If the fdinfo data indicates there's drm-total-cycles, use it to
>>propagate the engine utilization. Also add an assert in intel_gpu_top
>>since it only knows how to deal with with engine time busyness.
>>
>>Signed-off-by: Lucas De Marchi <lucas.demarchi at intel.com>
>>---
>>lib/igt_drm_clients.c | 13 +++++++++++++
>>lib/igt_drm_clients.h | 5 +++++
>>2 files changed, 18 insertions(+)
>>
>>diff --git a/lib/igt_drm_clients.c b/lib/igt_drm_clients.c
>>index fbbb763f7..105c7d298 100644
>>--- a/lib/igt_drm_clients.c
>>+++ b/lib/igt_drm_clients.c
>>@@ -107,10 +107,13 @@ igt_drm_client_update(struct igt_drm_client *c, unsigned int pid, char *name,
>> c->total_engine_time = 0;
>> c->agg_delta_cycles = 0;
>> c->total_cycles = 0;
>>+ c->agg_delta_total_cycles = 0;
>>+ c->total_total_cycles = 0;
>>
>> for (i = 0; i <= c->engines->max_engine_id; i++) {
>> assert(i < ARRAY_SIZE(info->engine_time));
>> assert(i < ARRAY_SIZE(info->cycles));
>>+ assert(i < ARRAY_SIZE(info->total_cycles));
>
>same comment as before - maybe just ensure array sizes are the same.
>
>>
>> if (info->utilization_mask & DRM_FDINFO_UTILIZATION_ENGINE_TIME &&
>> info->engine_time[i] >= c->utilization[i].last_engine_time) {
>>@@ -131,6 +134,16 @@ igt_drm_client_update(struct igt_drm_client *c, unsigned int pid, char *name,
>> c->agg_delta_cycles += c->utilization[i].delta_cycles;
>> c->utilization[i].last_cycles = info->cycles[i];
>> }
>>+
>>+ if (info->utilization_mask & DRM_FDINFO_UTILIZATION_CYCLES &&
>
>This should be
>
>s/DRM_FDINFO_UTILIZATION_CYCLES/DRM_FDINFO_UTILIZATION_TOTAL_CYCLES/
>
>or a new name if you decide to change things based on below comment.
>
>>+ info->total_cycles[i] >= c->utilization[i].last_total_cycles) {
>>+ c->utilization_mask |= IGT_DRM_CLIENT_UTILIZATION_TOTAL_CYCLES;
>>+ c->total_total_cycles += info->total_cycles[i];
>>+ c->utilization[i].delta_total_cycles =
>>+ info->total_cycles[i] - c->utilization[i].last_total_cycles;
>>+ c->agg_delta_total_cycles += c->utilization[i].delta_total_cycles;
>>+ c->utilization[i].last_total_cycles = info->total_cycles[i];
>>+ }
>> }
>>
>> /* Memory regions */
>>diff --git a/lib/igt_drm_clients.h b/lib/igt_drm_clients.h
>>index 514c09e71..946d709de 100644
>>--- a/lib/igt_drm_clients.h
>>+++ b/lib/igt_drm_clients.h
>>@@ -36,6 +36,7 @@ enum igt_drm_client_status {
>>enum igt_drm_client_utilization_type {
>> IGT_DRM_CLIENT_UTILIZATION_ENGINE_TIME = 1U << 0,
>> IGT_DRM_CLIENT_UTILIZATION_CYCLES = 1U << 1,
>>+ IGT_DRM_CLIENT_UTILIZATION_TOTAL_CYCLES = 1U << 2,
>>};
>>
>>struct igt_drm_client_engines {
>>@@ -74,11 +75,15 @@ struct igt_drm_client {
>> unsigned long agg_delta_engine_time; /* Aggregate of @utilization.delta_engine_time, i.e. engine time on all engines since previous scan. */
>> unsigned long total_cycles; /* Aggregate of @utilization.agg_delta_cycles, i.e. engine time on all engines since client start. */
>> unsigned long agg_delta_cycles; /* Aggregate of @utilization.delta_cycles, i.e. engine time on all engines since previous scan. */
>>+ unsigned long total_total_cycles; /* Aggregate of @utilization.agg_delta_total_cycles, i.e. engine time on all engines since client start. */
>
>total_total_cycles :). I can understand that since I am looking at the
>patches in order, but there might be room for another rename, maybe:
>
>s/c->total_cycles/c->total_engine_cycles/ (since this is how may
>cycles the client ran on the engine)
>
>s/c->total_total_cycles/c->total_<something>_cycles/ (where
><something> could be - "available" or "gpu".
On second thoughts, I believe <something>_cycles is likely derived from
drm-total-cycles, so you have named it accordingly. I am okay with this
as is.
With just the if condition fixed above, this should be
Reviewed-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa at intel.com>
Umesh
>
>Regards,
>Umesh
>
>>+ unsigned long agg_delta_total_cycles; /* Aggregate of @utilization.delta_total_cycles, i.e. engine time on all engines since previous scan. */
>> struct igt_drm_client_utilization {
>> unsigned long delta_engine_time; /* Engine time data, relative to previous scan. */
>> unsigned long delta_cycles; /* Engine cycles data, relative to previous scan. */
>>+ unsigned long delta_total_cycles; /* Engine total cycles data, relative to previous scan. */
>> uint64_t last_engine_time; /* Engine time data as parsed from fdinfo. */
>> uint64_t last_cycles; /* Engine cycles data as parsed from fdinfo. */
>>+ uint64_t last_total_cycles; /* Engine total cycles data as parsed from fdinfo. */
>> } *utilization; /* Array of engine utilization */
>>
>> struct drm_client_meminfo *memory; /* Array of region memory utilisation as parsed from fdinfo. */
>>--
>>2.43.0
>>
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