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charset="utf-8" From: Rob Clark So we can monitor how many pages are getting preallocated vs how many get used. Signed-off-by: Rob Clark Signed-off-by: Rob Clark Tested-by: Antonino Maniscalco Reviewed-by: Antonino Maniscalco --- drivers/gpu/drm/msm/msm_gpu_trace.h | 14 ++++++++++++++ drivers/gpu/drm/msm/msm_iommu.c | 4 ++++ 2 files changed, 18 insertions(+) diff --git a/drivers/gpu/drm/msm/msm_gpu_trace.h b/drivers/gpu/drm/msm/msm_= gpu_trace.h index 7f863282db0d..781bbe5540bd 100644 --- a/drivers/gpu/drm/msm/msm_gpu_trace.h +++ b/drivers/gpu/drm/msm/msm_gpu_trace.h @@ -205,6 +205,20 @@ TRACE_EVENT(msm_gpu_preemption_irq, TP_printk("preempted to %u", __entry->ring_id) ); =20 +TRACE_EVENT(msm_mmu_prealloc_cleanup, + TP_PROTO(u32 count, u32 remaining), + TP_ARGS(count, remaining), + TP_STRUCT__entry( + __field(u32, count) + __field(u32, remaining) + ), + TP_fast_assign( + __entry->count =3D count; + __entry->remaining =3D remaining; + ), + TP_printk("count=3D%u, remaining=3D%u", __entry->count, __entry->remaini= ng) +); + #endif =20 #undef TRACE_INCLUDE_PATH diff --git a/drivers/gpu/drm/msm/msm_iommu.c b/drivers/gpu/drm/msm/msm_iomm= u.c index 887c9023f8a2..55c29f49b788 100644 --- a/drivers/gpu/drm/msm/msm_iommu.c +++ b/drivers/gpu/drm/msm/msm_iommu.c @@ -8,6 +8,7 @@ #include #include #include "msm_drv.h" +#include "msm_gpu_trace.h" #include "msm_mmu.h" =20 struct msm_iommu { @@ -346,6 +347,9 @@ msm_iommu_pagetable_prealloc_cleanup(struct msm_mmu *mm= u, struct msm_mmu_preallo struct kmem_cache *pt_cache =3D get_pt_cache(mmu); uint32_t remaining_pt_count =3D p->count - p->ptr; =20 + if (p->count > 0) + trace_msm_mmu_prealloc_cleanup(p->count, remaining_pt_count); + kmem_cache_free_bulk(pt_cache, remaining_pt_count, &p->pages[p->ptr]); kvfree(p->pages); } --=20 2.50.0