Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
drm/msm: Add mmu prealloc tracepoint
So we can monitor how many pages are getting preallocated vs how many
get used.
Signed-off-by: Rob Clark <robdclark@chromium.org>
Signed-off-by: Rob Clark <robin.clark@oss.qualcomm.com>
Tested-by: Antonino Maniscalco <antomani103@gmail.com>
Reviewed-by: Antonino Maniscalco <antomani103@gmail.com>
Patchwork: https://patchwork.freedesktop.org/patch/661521/
+18
+14
drivers/gpu/drm/msm/msm_gpu_trace.h
+14
drivers/gpu/drm/msm/msm_gpu_trace.h
···
205
205
TP_printk("preempted to %u", __entry->ring_id)
206
206
);
207
207
208
+
TRACE_EVENT(msm_mmu_prealloc_cleanup,
209
+
TP_PROTO(u32 count, u32 remaining),
210
+
TP_ARGS(count, remaining),
211
+
TP_STRUCT__entry(
212
+
__field(u32, count)
213
+
__field(u32, remaining)
214
+
),
215
+
TP_fast_assign(
216
+
__entry->count = count;
217
+
__entry->remaining = remaining;
218
+
),
219
+
TP_printk("count=%u, remaining=%u", __entry->count, __entry->remaining)
220
+
);
221
+
208
222
#endif
209
223
210
224
#undef TRACE_INCLUDE_PATH
+4
drivers/gpu/drm/msm/msm_iommu.c
+4
drivers/gpu/drm/msm/msm_iommu.c
···
8
8
#include <linux/io-pgtable.h>
9
9
#include <linux/kmemleak.h>
10
10
#include "msm_drv.h"
11
+
#include "msm_gpu_trace.h"
11
12
#include "msm_mmu.h"
12
13
13
14
struct msm_iommu {
···
346
345
{
347
346
struct kmem_cache *pt_cache = get_pt_cache(mmu);
348
347
uint32_t remaining_pt_count = p->count - p->ptr;
348
+
349
+
if (p->count > 0)
350
+
trace_msm_mmu_prealloc_cleanup(p->count, remaining_pt_count);
349
351
350
352
kmem_cache_free_bulk(pt_cache, remaining_pt_count, &p->pages[p->ptr]);
351
353
kvfree(p->pages);