63b67b7d99
Tristate CONFIG_QCOM_RTB. Use IS_ENABLED(CONFIG_QCOM_RTB). Add setter for log callback function. Select CONFIG_TRACING whenever CONFIG_QCOM_RTB is selected due to the location of uncached_logk implementation. Signed-off-by: Mark Salyzyn <salyzyn@google.com> Test: add msm-imem-rtb_info-compatible memory section in DTB, Test: compile and load msm_rtb module Bug: 144786226 Change-Id: If2730d3942556600ae14cb633a1751adbf3c9ded
84 lines
1.8 KiB
C
84 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0-only */
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/*
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* Copyright (c) 2012-2014, 2016, 2018, The Linux Foundation. All rights reserved.
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*/
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#ifndef __MSM_RTB_H__
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#define __MSM_RTB_H__
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/*
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* These numbers are used from the kernel command line and sysfs
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* to control filtering. Remove items from here with extreme caution.
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*/
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enum logk_event_type {
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LOGK_NONE = 0,
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LOGK_READL = 1,
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LOGK_WRITEL = 2,
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LOGK_LOGBUF = 3,
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LOGK_HOTPLUG = 4,
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LOGK_CTXID = 5,
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LOGK_TIMESTAMP = 6,
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LOGK_L2CPREAD = 7,
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LOGK_L2CPWRITE = 8,
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LOGK_IRQ = 9,
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};
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#define LOGTYPE_NOPC 0x80
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struct msm_rtb_platform_data {
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unsigned int size;
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};
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#if IS_ENABLED(CONFIG_QCOM_RTB)
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/*
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* returns 1 if data was logged, 0 otherwise
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*/
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int uncached_logk_pc(enum logk_event_type log_type, void *caller,
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void *data);
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/*
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* returns 1 if data was logged, 0 otherwise
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*/
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int uncached_logk(enum logk_event_type log_type, void *data);
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extern void set_uncached_logk_func(int (*fn)(enum logk_event_type, void *));
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#define ETB_WAYPOINT do { \
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BRANCH_TO_NEXT_ISTR; \
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nop(); \
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BRANCH_TO_NEXT_ISTR; \
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nop(); \
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} while (0)
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#define BRANCH_TO_NEXT_ISTR \
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do { \
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asm volatile("b .+4\n" : : : "memory"); \
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} while (0)
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/*
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* both the mb and the isb are needed to ensure enough waypoints for
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* etb tracing
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*/
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#define LOG_BARRIER do { \
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mb(); \
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isb(); \
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} while (0)
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#else
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static inline int uncached_logk_pc(enum logk_event_type log_type,
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void *caller,
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void *data) { return 0; }
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static inline int uncached_logk(enum logk_event_type log_type,
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void *data) { return 0; }
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#define ETB_WAYPOINT
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#define BRANCH_TO_NEXT_ISTR
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/*
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* Due to a GCC bug, we need to have a nop here in order to prevent an extra
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* read from being generated after the write.
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*/
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#define LOG_BARRIER nop()
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#endif
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#endif
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