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-rw-r--r--drivers/gpu/drm/Makefile5
-rw-r--r--drivers/gpu/drm/drm_irq.c11
-rw-r--r--drivers/gpu/drm/drm_trace.h66
-rw-r--r--drivers/gpu/drm/drm_trace_points.c4
-rw-r--r--drivers/gpu/drm/i915/i915_trace.h36
-rw-r--r--drivers/gpu/drm/i915/intel_display.c5
-rw-r--r--include/drm/drmP.h2
7 files changed, 128 insertions, 1 deletions
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index b4b2b480d0ce..df8f92322865 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -11,7 +11,8 @@ drm-y := drm_auth.o drm_buffer.o drm_bufs.o drm_cache.o \
drm_agpsupport.o drm_scatter.o ati_pcigart.o drm_pci.o \
drm_platform.o drm_sysfs.o drm_hashtab.o drm_sman.o drm_mm.o \
drm_crtc.o drm_modes.o drm_edid.o \
- drm_info.o drm_debugfs.o drm_encoder_slave.o
+ drm_info.o drm_debugfs.o drm_encoder_slave.o \
+ drm_trace_points.o
drm-$(CONFIG_COMPAT) += drm_ioc32.o
@@ -19,6 +20,8 @@ drm_kms_helper-y := drm_fb_helper.o drm_crtc_helper.o drm_dp_i2c_helper.o
obj-$(CONFIG_DRM_KMS_HELPER) += drm_kms_helper.o
+CFLAGS_drm_trace_points.o := -I$(src)
+
obj-$(CONFIG_DRM) += drm.o
obj-$(CONFIG_DRM_TTM) += ttm/
obj-$(CONFIG_DRM_TDFX) += tdfx/
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
index 6353b625e099..9d3a5030b6e1 100644
--- a/drivers/gpu/drm/drm_irq.c
+++ b/drivers/gpu/drm/drm_irq.c
@@ -34,6 +34,7 @@
*/
#include "drmP.h"
+#include "drm_trace.h"
#include <linux/interrupt.h> /* For task queue support */
#include <linux/slab.h>
@@ -590,6 +591,7 @@ static int drm_queue_vblank_event(struct drm_device *dev, int pipe,
return -ENOMEM;
e->pipe = pipe;
+ e->base.pid = current->pid;
e->event.base.type = DRM_EVENT_VBLANK;
e->event.base.length = sizeof e->event;
e->event.user_data = vblwait->request.signal;
@@ -617,6 +619,9 @@ static int drm_queue_vblank_event(struct drm_device *dev, int pipe,
DRM_DEBUG("event on vblank count %d, current %d, crtc %d\n",
vblwait->request.sequence, seq, pipe);
+ trace_drm_vblank_event_queued(current->pid, pipe,
+ vblwait->request.sequence);
+
e->event.sequence = vblwait->request.sequence;
if ((seq - vblwait->request.sequence) <= (1 << 23)) {
e->event.tv_sec = now.tv_sec;
@@ -624,6 +629,8 @@ static int drm_queue_vblank_event(struct drm_device *dev, int pipe,
drm_vblank_put(dev, e->pipe);
list_add_tail(&e->base.link, &e->base.file_priv->event_list);
wake_up_interruptible(&e->base.file_priv->event_wait);
+ trace_drm_vblank_event_delivered(current->pid, pipe,
+ vblwait->request.sequence);
} else {
list_add_tail(&e->base.link, &dev->vblank_event_list);
}
@@ -754,9 +761,13 @@ void drm_handle_vblank_events(struct drm_device *dev, int crtc)
drm_vblank_put(dev, e->pipe);
list_move_tail(&e->base.link, &e->base.file_priv->event_list);
wake_up_interruptible(&e->base.file_priv->event_wait);
+ trace_drm_vblank_event_delivered(e->base.pid, e->pipe,
+ e->event.sequence);
}
spin_unlock_irqrestore(&dev->event_lock, flags);
+
+ trace_drm_vblank_event(crtc, seq);
}
/**
diff --git a/drivers/gpu/drm/drm_trace.h b/drivers/gpu/drm/drm_trace.h
new file mode 100644
index 000000000000..03ea964aa604
--- /dev/null
+++ b/drivers/gpu/drm/drm_trace.h
@@ -0,0 +1,66 @@
+#if !defined(_DRM_TRACE_H_) || defined(TRACE_HEADER_MULTI_READ)
+#define _DRM_TRACE_H_
+
+#include <linux/stringify.h>
+#include <linux/types.h>
+#include <linux/tracepoint.h>
+
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM drm
+#define TRACE_SYSTEM_STRING __stringify(TRACE_SYSTEM)
+#define TRACE_INCLUDE_FILE drm_trace
+
+TRACE_EVENT(drm_vblank_event,
+ TP_PROTO(int crtc, unsigned int seq),
+ TP_ARGS(crtc, seq),
+ TP_STRUCT__entry(
+ __field(int, crtc)
+ __field(unsigned int, seq)
+ ),
+ TP_fast_assign(
+ __entry->crtc = crtc;
+ __entry->seq = seq;
+ ),
+ TP_printk("crtc=%d, seq=%d", __entry->crtc, __entry->seq)
+);
+
+TRACE_EVENT(drm_vblank_event_queued,
+ TP_PROTO(pid_t pid, int crtc, unsigned int seq),
+ TP_ARGS(pid, crtc, seq),
+ TP_STRUCT__entry(
+ __field(pid_t, pid)
+ __field(int, crtc)
+ __field(unsigned int, seq)
+ ),
+ TP_fast_assign(
+ __entry->pid = pid;
+ __entry->crtc = crtc;
+ __entry->seq = seq;
+ ),
+ TP_printk("pid=%d, crtc=%d, seq=%d", __entry->pid, __entry->crtc, \
+ __entry->seq)
+);
+
+TRACE_EVENT(drm_vblank_event_delivered,
+ TP_PROTO(pid_t pid, int crtc, unsigned int seq),
+ TP_ARGS(pid, crtc, seq),
+ TP_STRUCT__entry(
+ __field(pid_t, pid)
+ __field(int, crtc)
+ __field(unsigned int, seq)
+ ),
+ TP_fast_assign(
+ __entry->pid = pid;
+ __entry->crtc = crtc;
+ __entry->seq = seq;
+ ),
+ TP_printk("pid=%d, crtc=%d, seq=%d", __entry->pid, __entry->crtc, \
+ __entry->seq)
+);
+
+#endif /* _DRM_TRACE_H_ */
+
+/* This part must be outside protection */
+#undef TRACE_INCLUDE_PATH
+#define TRACE_INCLUDE_PATH .
+#include <trace/define_trace.h>
diff --git a/drivers/gpu/drm/drm_trace_points.c b/drivers/gpu/drm/drm_trace_points.c
new file mode 100644
index 000000000000..0d0eb90864ae
--- /dev/null
+++ b/drivers/gpu/drm/drm_trace_points.c
@@ -0,0 +1,4 @@
+#include "drmP.h"
+
+#define CREATE_TRACE_POINTS
+#include "drm_trace.h"
diff --git a/drivers/gpu/drm/i915/i915_trace.h b/drivers/gpu/drm/i915/i915_trace.h
index fab21760dd57..fea97a21cc14 100644
--- a/drivers/gpu/drm/i915/i915_trace.h
+++ b/drivers/gpu/drm/i915/i915_trace.h
@@ -262,6 +262,42 @@ DEFINE_EVENT(i915_ring, i915_ring_wait_end,
TP_ARGS(dev)
);
+TRACE_EVENT(i915_flip_request,
+ TP_PROTO(int plane, struct drm_gem_object *obj),
+
+ TP_ARGS(plane, obj),
+
+ TP_STRUCT__entry(
+ __field(int, plane)
+ __field(struct drm_gem_object *, obj)
+ ),
+
+ TP_fast_assign(
+ __entry->plane = plane;
+ __entry->obj = obj;
+ ),
+
+ TP_printk("plane=%d, obj=%p", __entry->plane, __entry->obj)
+);
+
+TRACE_EVENT(i915_flip_complete,
+ TP_PROTO(int plane, struct drm_gem_object *obj),
+
+ TP_ARGS(plane, obj),
+
+ TP_STRUCT__entry(
+ __field(int, plane)
+ __field(struct drm_gem_object *, obj)
+ ),
+
+ TP_fast_assign(
+ __entry->plane = plane;
+ __entry->obj = obj;
+ ),
+
+ TP_printk("plane=%d, obj=%p", __entry->plane, __entry->obj)
+);
+
#endif /* _I915_TRACE_H_ */
/* This part must be outside protection */
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 68dcf36e2793..f879589bead1 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -33,6 +33,7 @@
#include "intel_drv.h"
#include "i915_drm.h"
#include "i915_drv.h"
+#include "i915_trace.h"
#include "drm_dp_helper.h"
#include "drm_crtc_helper.h"
@@ -4650,6 +4651,8 @@ static void do_intel_finish_page_flip(struct drm_device *dev,
atomic_dec_and_test(&obj_priv->pending_flip))
DRM_WAKEUP(&dev_priv->pending_flip_queue);
schedule_work(&work->work);
+
+ trace_i915_flip_complete(intel_crtc->plane, work->pending_flip_obj);
}
void intel_finish_page_flip(struct drm_device *dev, int pipe)
@@ -4781,6 +4784,8 @@ static int intel_crtc_page_flip(struct drm_crtc *crtc,
mutex_unlock(&dev->struct_mutex);
+ trace_i915_flip_request(intel_crtc->plane, obj);
+
return 0;
}
diff --git a/include/drm/drmP.h b/include/drm/drmP.h
index 6235169d5950..04b564bfc4a1 100644
--- a/include/drm/drmP.h
+++ b/include/drm/drmP.h
@@ -406,6 +406,8 @@ struct drm_pending_event {
struct drm_event *event;
struct list_head link;
struct drm_file *file_priv;
+ pid_t pid; /* pid of requester, no guarantee it's valid by the time
+ we deliver the event, for tracing only */
void (*destroy)(struct drm_pending_event *event);
};
Copyright © 1996 – 2023 Jason A. Donenfeld. All Rights Reverse Engineered.