msm: kgsl: add a trace event for MMU pagefaults
It is often very useful to see where a pagefault
occurs in relation to other trace events such
as kgsl_mem_free or kgsl_issueibcmds, so that the
source of the pagefault can be isolated.
Change-Id: I846cb588e1b09bf12698d014d289b64f35576c7e
Signed-off-by: Jeremy Gebben <jgebben@codeaurora.org>
diff --git a/drivers/gpu/msm/kgsl_gpummu.c b/drivers/gpu/msm/kgsl_gpummu.c
index 8f61ab6..429d035 100644
--- a/drivers/gpu/msm/kgsl_gpummu.c
+++ b/drivers/gpu/msm/kgsl_gpummu.c
@@ -21,6 +21,7 @@
#include "kgsl_mmu.h"
#include "kgsl_device.h"
#include "kgsl_sharedmem.h"
+#include "kgsl_trace.h"
#define KGSL_PAGETABLE_SIZE \
ALIGN(KGSL_PAGETABLE_ENTRIES(CONFIG_MSM_KGSL_PAGE_TABLE_SIZE) * \
@@ -410,6 +411,9 @@
reg & ~(PAGE_SIZE - 1),
kgsl_mmu_get_ptname_from_ptbase(ptbase),
reg & 0x02 ? "WRITE" : "READ", (reg >> 4) & 0xF);
+ trace_kgsl_mmu_pagefault(mmu->device, reg & ~(PAGE_SIZE - 1),
+ kgsl_mmu_get_ptname_from_ptbase(ptbase),
+ reg & 0x02 ? "WRITE" : "READ");
}
static void *kgsl_gpummu_create_pagetable(void)