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Commit db3ae3b5 authored by Oleg Perelet's avatar Oleg Perelet
Browse files

msm: kgsl: Add Limits Management threshold crossing counter 



Add debugfs node 'lm_threshold_count' that displays low dword of Limits
Management threshold breaking counter.

Change-Id: I28f37c27855099509dc57beffb7dcc6d0d53803a
Signed-off-by: default avatarOleg Perelet <operelet@codeaurora.org>
parent d9ba4d25

drivers/gpu/msm/adreno.c

+16 −0
Original line number Original line Diff line number Diff line
@@ -1396,6 +1396,19 @@ static int _adreno_start(struct adreno_device *adreno_dev) 
	adreno_dev->busy_data.vbif_ram_cycles = 0;

	adreno_dev->busy_data.vbif_ram_cycles = 0;

	adreno_dev->busy_data.vbif_starved_ram = 0;

	adreno_dev->busy_data.vbif_starved_ram = 0;





	if (ADRENO_FEATURE(adreno_dev, ADRENO_LM)

		&& adreno_dev->lm_threshold_count == 0) {

		int ret;



		ret = adreno_perfcounter_get(adreno_dev,

			KGSL_PERFCOUNTER_GROUP_GPMU_PWR, 27,

			&adreno_dev->lm_threshold_count, NULL,

			PERFCOUNTER_FLAG_KERNEL);

		/* Ignore noncritical ret - used for debugfs */

		if (ret)

			adreno_dev->lm_threshold_count = 0;

	}



	/* Restore performance counter registers with saved values */

	/* Restore performance counter registers with saved values */

	adreno_perfcounter_restore(adreno_dev);

	adreno_perfcounter_restore(adreno_dev);
@@ -2499,6 +2512,9 @@ static void adreno_power_stats(struct kgsl_device *device, 
		stats->ram_time = ram_cycles;

		stats->ram_time = ram_cycles;

		stats->ram_wait = starved_ram;

		stats->ram_wait = starved_ram;

	}

	}

	if (adreno_dev->lm_threshold_count)

		kgsl_regread(&adreno_dev->dev, adreno_dev->lm_threshold_count,

			&adreno_dev->lm_threshold_cross);

}

}





static unsigned int adreno_gpuid(struct kgsl_device *device,

static unsigned int adreno_gpuid(struct kgsl_device *device,

drivers/gpu/msm/adreno.h

+4 −0
Original line number Original line Diff line number Diff line
@@ -291,6 +291,8 @@ struct adreno_gpu_core { 
 * @lm_sequence: Pointer to the start of the register write sequence for LM

 * @lm_sequence: Pointer to the start of the register write sequence for LM

 * @lm_size: The dword size of the LM sequence

 * @lm_size: The dword size of the LM sequence

 * @lm_limit: limiting value for LM

 * @lm_limit: limiting value for LM

 * @lm_threshold_count: register value for counter for lm threshold breakin

 * @lm_threshold_cross: number of current peaks exceeding threshold

 */

 */

struct adreno_device {

struct adreno_device {

	struct kgsl_device dev;    /* Must be first field in this struct */

	struct kgsl_device dev;    /* Must be first field in this struct */
@@ -343,6 +345,8 @@ struct adreno_device { 
	struct work_struct gpmu_work;

	struct work_struct gpmu_work;

	uint32_t lm_leakage;

	uint32_t lm_leakage;

	uint32_t lm_limit;

	uint32_t lm_limit;

	uint32_t lm_threshold_count;

	uint32_t lm_threshold_cross;





	struct kgsl_memdesc capturescript;

	struct kgsl_memdesc capturescript;

	struct kgsl_memdesc snapshot_registers;

	struct kgsl_memdesc snapshot_registers;

drivers/gpu/msm/adreno_debugfs.c

+19 −1
Original line number Original line Diff line number Diff line
@@ -97,6 +97,21 @@ static int _lm_limit_get(void *data, u64 *val) 




DEFINE_SIMPLE_ATTRIBUTE(_lm_limit_fops, _lm_limit_get, _lm_limit_set, "%llu\n");

DEFINE_SIMPLE_ATTRIBUTE(_lm_limit_fops, _lm_limit_get, _lm_limit_set, "%llu\n");





static int _lm_threshold_count_get(void *data, u64 *val)

{

	struct kgsl_device *device = data;

	struct adreno_device *adreno_dev = ADRENO_DEVICE(device);



	if (!ADRENO_FEATURE(adreno_dev, ADRENO_LM))

		*val = 0;

	else

		*val = (u64) adreno_dev->lm_threshold_cross;

	return 0;

}



DEFINE_SIMPLE_ATTRIBUTE(_lm_threshold_fops, _lm_threshold_count_get,

	NULL, "%llu\n");



static int _active_count_get(void *data, u64 *val)

static int _active_count_get(void *data, u64 *val)

{

{

	struct kgsl_device *device = data;

	struct kgsl_device *device = data;
@@ -348,9 +363,12 @@ void adreno_debugfs_init(struct adreno_device *adreno_dev) 
	adreno_dev->ctx_d_debugfs = debugfs_create_dir("ctx",

	adreno_dev->ctx_d_debugfs = debugfs_create_dir("ctx",

							device->d_debugfs);

							device->d_debugfs);





	if (ADRENO_FEATURE(adreno_dev, ADRENO_LM))

	if (ADRENO_FEATURE(adreno_dev, ADRENO_LM)) {

		debugfs_create_file("lm_limit", 0644, device->d_debugfs, device,

		debugfs_create_file("lm_limit", 0644, device->d_debugfs, device,

			&_lm_limit_fops);

			&_lm_limit_fops);

		debugfs_create_file("lm_threshold_count", 0444,

			device->d_debugfs, device, &_lm_threshold_fops);

	}





	if (adreno_is_a5xx(adreno_dev))

	if (adreno_is_a5xx(adreno_dev))

		debugfs_create_file("isdb", 0644, device->d_debugfs,

		debugfs_create_file("isdb", 0644, device->d_debugfs,