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

Commit 07de3bdd authored by Shravya Samala's avatar Shravya Samala Committed by Gerrit - the friendly Code Review server
Browse files

msm: camera: req_mgr: Thread switch delay detection mechanisms 



Added timestamp logic incase of thread switch.
Difference between thread scheduled and thread
triggered is compared with a threshold value.
If this difference is more than threshold value
then, thread switch delay is detected.

CRs-Fixed: 2686338
Change-Id: Icbfbd0db4600cef2e5d74d39faabff1744f88b69
Signed-off-by: default avatarShravya Samala <shravyas@codeaurora.org>
parent 588b9cbc

drivers/cam_cdm/cam_cdm.h

+1 −0
Original line number Diff line number Diff line
@@ -434,6 +434,7 @@ struct cam_cdm_work_payload { 
	uint32_t irq_status;

	uint32_t irq_data;

	int fifo_idx;

	ktime_t workq_scheduled_ts;

	struct work_struct work;

};

drivers/cam_cdm/cam_cdm_hw_core.c

+6 −0
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@ 
#include "cam_cdm_hw_reg_1_2.h"

#include "cam_cdm_hw_reg_2_0.h"

#include "cam_trace.h"

#include "cam_req_mgr_workq.h"



#define CAM_CDM_BL_FIFO_WAIT_TIMEOUT 2000

#define CAM_CDM_DBG_GEN_IRQ_USR_DATA 0xff
@@ -1105,6 +1106,9 @@ static void cam_hw_cdm_work(struct work_struct *work) 
			payload = NULL;

			return;

		}

		cam_req_mgr_thread_switch_delay_detect(

			payload->workq_scheduled_ts);



		CAM_DBG(CAM_CDM, "IRQ status=0x%x", payload->irq_status);

		if (payload->irq_status &

			CAM_CDM_IRQ_STATUS_INLINE_IRQ_MASK) {
@@ -1342,6 +1346,8 @@ irqreturn_t cam_hw_cdm_irq(int irq_num, void *data) 
			cdm_hw->soc_info.index);



		cdm_core->bl_fifo[i].work_record++;

		payload[i]->workq_scheduled_ts = ktime_get();



		work_status = queue_work(

				cdm_core->bl_fifo[i].work_queue,

				&payload[i]->work);

drivers/cam_cdm/cam_cdm_virtual_core.c

+9 −2
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2017-2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2017-2020, The Linux Foundation. All rights reserved.

 */



#include <linux/delay.h>
@@ -19,6 +19,7 @@ 
#include "cam_cdm_core_common.h"

#include "cam_cdm_soc.h"

#include "cam_io_util.h"

#include "cam_req_mgr_workq.h"



#define CAM_CDM_VIRTUAL_NAME "qcom,cam_virtual_cdm"
@@ -32,6 +33,10 @@ static void cam_virtual_cdm_work(struct work_struct *work) 
	if (payload) {

		cdm_hw = payload->hw;

		core = (struct cam_cdm *)cdm_hw->core_info;



		cam_req_mgr_thread_switch_delay_detect(

			payload->workq_scheduled_ts);



		if (payload->irq_status & 0x2) {

			struct cam_cdm_bl_cb_request_entry *node;
@@ -183,6 +188,8 @@ int cam_virtual_cdm_submit_bl(struct cam_hw_info *cdm_hw, 
					INIT_WORK((struct work_struct *)

						&payload->work,

						cam_virtual_cdm_work);

					payload->workq_scheduled_ts =

						ktime_get();

					queue_work(core->work_queue,

						&payload->work);

				}

drivers/cam_cpas/cpas_top/Makefile

+1 −0
Original line number Diff line number Diff line
@@ -5,5 +5,6 @@ ccflags-y += -I$(srctree)/techpack/camera/drivers/cam_utils 
ccflags-y += -I$(srctree)/techpack/camera/drivers/cam_core

ccflags-y += -I$(srctree)/techpack/camera/drivers/cam_cpas/include

ccflags-y += -I$(srctree)/techpack/camera/drivers/cam_cpas

ccflags-y += -I$(srctree)/techpack/camera/drivers/cam_req_mgr



obj-$(CONFIG_SPECTRA_CAMERA) += cam_cpastop_hw.o

drivers/cam_cpas/cpas_top/cam_cpastop_hw.c

+5 −0
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ 
#include "cpastop_v480_100.h"

#include "cpastop_v540_100.h"

#include "cpastop_v520_100.h"

#include "cam_req_mgr_workq.h"



struct cam_camnoc_info *camnoc_info;
@@ -415,6 +416,9 @@ static void cam_cpastop_work(struct work_struct *work) 
		return;

	}



	cam_req_mgr_thread_switch_delay_detect(

			payload->workq_scheduled_ts);



	cpas_hw = payload->hw;

	cpas_core = (struct cam_cpas *) cpas_hw->core_info;

	soc_info = &cpas_hw->soc_info;
@@ -514,6 +518,7 @@ static irqreturn_t cam_cpastop_handle_irq(int irq_num, void *data) 


	cam_cpastop_reset_irq(cpas_hw);



	payload->workq_scheduled_ts = ktime_get();

	queue_work(cpas_core->work_queue, &payload->work);

done:

	atomic_dec(&cpas_core->irq_count);