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drm/msm: Convert shrinker msgs to tracepoints

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This reduces the spam in dmesg when we start hitting the shrinker, and
replaces it with something we can put on a timeline while profiling or
debugging system issues.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Jordan Crouse <jcrouse@codeaurora.org>
Reviewed-by: Kristian H. Kristensen <hoegsberg@google.com>
This commit is contained in:
Rob Clark 2020-09-01 08:41:55 -07:00
parent 74c0a69cc5
commit fdf38426cd
2 changed files with 29 additions and 2 deletions
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5
drivers/gpu/drm/msm/msm_gem_shrinker.c
View File

@ -6,6 +6,7 @@
#include "msm_drv.h" #include "msm_drv.h"
#include "msm_gem.h" #include "msm_gem.h"
#include "msm_gpu_trace.h"
static bool msm_gem_shrinker_lock(struct drm_device *dev, bool *unlock) static bool msm_gem_shrinker_lock(struct drm_device *dev, bool *unlock)
{ {
@ -87,7 +88,7 @@ msm_gem_shrinker_scan(struct shrinker *shrinker, struct shrink_control *sc)
mutex_unlock(&dev->struct_mutex); mutex_unlock(&dev->struct_mutex);
if (freed > 0) if (freed > 0)
pr_info_ratelimited("Purging %lu bytes\n", freed << PAGE_SHIFT); trace_msm_gem_purge(freed << PAGE_SHIFT);
return freed; return freed;
} }
@ -123,7 +124,7 @@ msm_gem_shrinker_vmap(struct notifier_block *nb, unsigned long event, void *ptr)
*(unsigned long *)ptr += unmapped; *(unsigned long *)ptr += unmapped;
if (unmapped > 0) if (unmapped > 0)
pr_info_ratelimited("Purging %u vmaps\n", unmapped); trace_msm_gem_purge_vmaps(unmapped);
return NOTIFY_DONE; return NOTIFY_DONE;
} }

26
drivers/gpu/drm/msm/msm_gpu_trace.h
View File

@ -114,6 +114,32 @@ TRACE_EVENT(msm_gmu_freq_change,
TP_printk("freq=%u, perf_index=%u", __entry->freq, __entry->perf_index) TP_printk("freq=%u, perf_index=%u", __entry->freq, __entry->perf_index)
); );
TRACE_EVENT(msm_gem_purge,
TP_PROTO(u32 bytes),
TP_ARGS(bytes),
TP_STRUCT__entry(
__field(u32, bytes)
),
TP_fast_assign(
__entry->bytes = bytes;
),
TP_printk("Purging %u bytes", __entry->bytes)
);
TRACE_EVENT(msm_gem_purge_vmaps,
TP_PROTO(u32 unmapped),
TP_ARGS(unmapped),
TP_STRUCT__entry(
__field(u32, unmapped)
),
TP_fast_assign(
__entry->unmapped = unmapped;
),
TP_printk("Purging %u vmaps", __entry->unmapped)
);
#endif #endif
#undef TRACE_INCLUDE_PATH #undef TRACE_INCLUDE_PATH