Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 83783932 authored by Mohammed Mirza Mandayappurath Manzoor's avatar Mohammed Mirza Mandayappurath Manzoor
Browse files

msm: kgsl: Set bug_on after snapshot to aid scandump 



To preserve register states for scandump and to have similar data as
snapshot, break right after snapshot is taken if the corresponding
sysfs knob is set.

Change-Id: I8f6f687359db1c8e6d7592acd85109269551517b
Signed-off-by: default avatarMohammed Mirza Mandayappurath Manzoor <mmandaya@codeaurora.org>
parent 17c616b8

drivers/gpu/msm/kgsl_device.h

+1 −0
Original line number Diff line number Diff line
@@ -292,6 +292,7 @@ struct kgsl_device { 


	u32 snapshot_faultcount;	/* Total number of faults since boot */

	bool force_panic;		/* Force panic after snapshot dump */

	bool skip_ib_capture;		/* Skip IB capture after snapshot */

	bool prioritize_unrecoverable;	/* Overwrite with new GMU snapshots */

	bool set_isdb_breakpoint;	/* Set isdb registers before snapshot */

drivers/gpu/msm/kgsl_snapshot.c

+24 −1
Original line number Diff line number Diff line
@@ -752,6 +752,9 @@ void kgsl_device_snapshot(struct kgsl_device *device, 
	dev_err(device->dev, "%s snapshot created at pa %pa++0x%zx\n",

			gmu_fault ? "GMU" : "GPU", &pa, snapshot->size);



	if (device->skip_ib_capture)

		BUG_ON(device->force_panic);



	sysfs_notify(&device->snapshot_kobj, NULL, "timestamp");



	/*
@@ -956,6 +959,22 @@ static ssize_t force_panic_store(struct kgsl_device *device, const char *buf, 
	return count;

}



/* Show the break_ib request status */

static ssize_t skip_ib_capture_show(struct kgsl_device *device, char *buf)

{

	return scnprintf(buf, PAGE_SIZE, "%d\n", device->skip_ib_capture);

}



/* Store the panic request value to break_ib */

static ssize_t skip_ib_capture_store(struct kgsl_device *device,

						const char *buf, size_t count)

{

	int ret;



	ret = kstrtobool(buf, &device->skip_ib_capture);

	return ret ? ret : count;

}



/* Show the prioritize_unrecoverable status */

static ssize_t prioritize_unrecoverable_show(

		struct kgsl_device *device, char *buf)
@@ -1038,6 +1057,8 @@ static SNAPSHOT_ATTR(snapshot_crashdumper, 0644, snapshot_crashdumper_show, 
	snapshot_crashdumper_store);

static SNAPSHOT_ATTR(snapshot_legacy, 0644, snapshot_legacy_show,

	snapshot_legacy_store);

static SNAPSHOT_ATTR(skip_ib_capture, 0644, skip_ib_capture_show,

		skip_ib_capture_store);



static ssize_t snapshot_sysfs_show(struct kobject *kobj,

	struct attribute *attr, char *buf)
@@ -1083,6 +1104,7 @@ static const struct attribute *snapshot_attrs[] = { 
	&attr_prioritize_unrecoverable.attr,

	&attr_snapshot_crashdumper.attr,

	&attr_snapshot_legacy.attr,

	&attr_skip_ib_capture.attr,

	NULL,

};
@@ -1308,5 +1330,6 @@ static void kgsl_snapshot_save_frozen_objs(struct work_struct *work) 


gmu_only:

	complete_all(&snapshot->dump_gate);

	BUG_ON(snapshot->device->force_panic);

	BUG_ON(!snapshot->device->skip_ib_capture &

				snapshot->device->force_panic);

}