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Commit 95d3c421 authored by Raghavendra Rao Ananta's avatar Raghavendra Rao Ananta
Browse files

msm_rtb: Add snapshot of msm_rtb.h 



This is a snapshot of msm_rtb.h file taken as of msm-4.19
commit <cf8acfa8c9b53ad> (Merge "msm: camera: core : Validate
the dev name during the node ioctl handler").

Change-Id: Ia2a2147369328ca6da177bd51c20217df3c4f157
Signed-off-by: default avatarRaghavendra Rao Ananta <rananta@codeaurora.org>
parent 07896b49

include/linux/msm_rtb.h

0 → 100644
+81 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * Copyright (c) 2012-2014, 2016, 2018, The Linux Foundation. All rights reserved.

 */



#ifndef __MSM_RTB_H__

#define __MSM_RTB_H__



/*

 * These numbers are used from the kernel command line and sysfs

 * to control filtering. Remove items from here with extreme caution.

 */

enum logk_event_type {

	LOGK_NONE = 0,

	LOGK_READL = 1,

	LOGK_WRITEL = 2,

	LOGK_LOGBUF = 3,

	LOGK_HOTPLUG = 4,

	LOGK_CTXID = 5,

	LOGK_TIMESTAMP = 6,

	LOGK_L2CPREAD = 7,

	LOGK_L2CPWRITE = 8,

	LOGK_IRQ = 9,

};



#define LOGTYPE_NOPC 0x80



struct msm_rtb_platform_data {

	unsigned int size;

};



#if defined(CONFIG_QCOM_RTB)

/*

 * returns 1 if data was logged, 0 otherwise

 */

int uncached_logk_pc(enum logk_event_type log_type, void *caller,

				void *data);



/*

 * returns 1 if data was logged, 0 otherwise

 */

int uncached_logk(enum logk_event_type log_type, void *data);



#define ETB_WAYPOINT  do { \

				BRANCH_TO_NEXT_ISTR; \

				nop(); \

				BRANCH_TO_NEXT_ISTR; \

				nop(); \

			} while (0)



#define BRANCH_TO_NEXT_ISTR \

	do { \

		asm volatile("b .+4\n" : : : "memory"); \

	} while (0)



/*

 * both the mb and the isb are needed to ensure enough waypoints for

 * etb tracing

 */

#define LOG_BARRIER	do { \

				mb(); \

				isb(); \

			} while (0)

#else



static inline int uncached_logk_pc(enum logk_event_type log_type,

					void *caller,

					void *data) { return 0; }



static inline int uncached_logk(enum logk_event_type log_type,

					void *data) { return 0; }



#define ETB_WAYPOINT

#define BRANCH_TO_NEXT_ISTR

/*

 * Due to a GCC bug, we need to have a nop here in order to prevent an extra

 * read from being generated after the write.

 */

#define LOG_BARRIER		nop()

#endif

#endif