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drm/lima: add usage counting method to ctx_mgr

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lima maintains a context manager per drm_file, similar to amdgpu.
In order to account for the complete usage per drm_file, all of the
associated contexts need to be considered.
Previously released contexts also need to be accounted for but their
drm_sched_entity info is gone once they get released, so account for it
in the ctx_mgr.

Signed-off-by: Erico Nunes <nunes.erico@gmail.com>
Signed-off-by: Qiang Yu <yuq825@gmail.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230312233052.21095-2-nunes.erico@gmail.com
This commit is contained in:
Erico Nunes 2023-03-13 00:30:50 +01:00 committed by Qiang Yu
parent c5647cae27
commit bccafec957
2 changed files with 32 additions and 1 deletions
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30
drivers/gpu/drm/lima/lima_ctx.c
View File

@ -15,6 +15,7 @@ int lima_ctx_create(struct lima_device *dev, struct lima_ctx_mgr *mgr, u32 *id)
if (!ctx)
return -ENOMEM;
ctx->dev = dev;
ctx->mgr = mgr;
kref_init(&ctx->refcnt);
for (i = 0; i < lima_pipe_num; i++) {
@ -42,10 +43,17 @@ err_out0:
static void lima_ctx_do_release(struct kref *ref)
{
struct lima_ctx *ctx = container_of(ref, struct lima_ctx, refcnt);
struct lima_ctx_mgr *mgr = ctx->mgr;
int i;
for (i = 0; i < lima_pipe_num; i++)
for (i = 0; i < lima_pipe_num; i++) {
struct lima_sched_context *context = &ctx->context[i];
struct drm_sched_entity *entity = &context->base;
mgr->elapsed_ns[i] += entity->elapsed_ns;
lima_sched_context_fini(ctx->dev->pipe + i, ctx->context + i);
}
kfree(ctx);
}
@ -99,3 +107,23 @@ void lima_ctx_mgr_fini(struct lima_ctx_mgr *mgr)
xa_destroy(&mgr->handles);
mutex_destroy(&mgr->lock);
}
void lima_ctx_mgr_usage(struct lima_ctx_mgr *mgr, u64 usage[lima_pipe_num])
{
struct lima_ctx *ctx;
unsigned long id;
for (int i = 0; i < lima_pipe_num; i++)
usage[i] = mgr->elapsed_ns[i];
mutex_lock(&mgr->lock);
xa_for_each(&mgr->handles, id, ctx) {
for (int i = 0; i < lima_pipe_num; i++) {
struct lima_sched_context *context = &ctx->context[i];
struct drm_sched_entity *entity = &context->base;
usage[i] += entity->elapsed_ns;
}
}
mutex_unlock(&mgr->lock);
}

3
drivers/gpu/drm/lima/lima_ctx.h
View File

@ -12,6 +12,7 @@
struct lima_ctx {
struct kref refcnt;
struct lima_device *dev;
struct lima_ctx_mgr *mgr;
struct lima_sched_context context[lima_pipe_num];
atomic_t guilty;
@ -23,6 +24,7 @@ struct lima_ctx {
struct lima_ctx_mgr {
struct mutex lock;
struct xarray handles;
u64 elapsed_ns[lima_pipe_num];
};
int lima_ctx_create(struct lima_device *dev, struct lima_ctx_mgr *mgr, u32 *id);
@ -31,5 +33,6 @@ struct lima_ctx *lima_ctx_get(struct lima_ctx_mgr *mgr, u32 id);
void lima_ctx_put(struct lima_ctx *ctx);
void lima_ctx_mgr_init(struct lima_ctx_mgr *mgr);
void lima_ctx_mgr_fini(struct lima_ctx_mgr *mgr);
void lima_ctx_mgr_usage(struct lima_ctx_mgr *mgr, u64 usage[lima_pipe_num]);
#endif