Commit fdf38426 authored by Rob Clark's avatar Rob Clark
Browse files

drm/msm: Convert shrinker msgs to tracepoints 



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: default avatarRob Clark <robdclark@chromium.org>
Reviewed-by: default avatarJordan Crouse <jcrouse@codeaurora.org>
Reviewed-by: default avatarKristian H. Kristensen <hoegsberg@google.com>
parent 74c0a69c

drivers/gpu/drm/msm/msm_gem_shrinker.c

+3 −2
Original line number Diff line number Diff line
@@ -6,6 +6,7 @@ 


#include "msm_drv.h"

#include "msm_gem.h"

#include "msm_gpu_trace.h"



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);



	if (freed > 0)

		pr_info_ratelimited("Purging %lu bytes\n", freed << PAGE_SHIFT);

		trace_msm_gem_purge(freed << PAGE_SHIFT);



	return freed;

}
@@ -123,7 +124,7 @@ msm_gem_shrinker_vmap(struct notifier_block *nb, unsigned long event, void *ptr) 
	*(unsigned long *)ptr += unmapped;



	if (unmapped > 0)

		pr_info_ratelimited("Purging %u vmaps\n", unmapped);

		trace_msm_gem_purge_vmaps(unmapped);



	return NOTIFY_DONE;

}

drivers/gpu/drm/msm/msm_gpu_trace.h

+26 −0
Original line number Diff line number Diff line
@@ -114,6 +114,32 @@ TRACE_EVENT(msm_gmu_freq_change, 
		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



#undef TRACE_INCLUDE_PATH

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