cregit-Linux how code gets into the kernel

Release 4.12 include/trace/events/ufs.h

/*
 * Copyright (c) 2013-2014, The Linux Foundation. All rights reserved.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 and
 * only version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */


#undef TRACE_SYSTEM

#define TRACE_SYSTEM ufs

#if !defined(_TRACE_UFS_H) || defined(TRACE_HEADER_MULTI_READ)

#define _TRACE_UFS_H

#include <linux/tracepoint.h>


#define UFS_LINK_STATES			\
	EM(UIC_LINK_OFF_STATE)          \
        EM(UIC_LINK_ACTIVE_STATE)       \
        EMe(UIC_LINK_HIBERN8_STATE)


#define UFS_PWR_MODES			\
	EM(UFS_ACTIVE_PWR_MODE)         \
        EM(UFS_SLEEP_PWR_MODE)          \
        EMe(UFS_POWERDOWN_PWR_MODE)


#define UFSCHD_CLK_GATING_STATES	\
	EM(CLKS_OFF)                    \
        EM(CLKS_ON)                     \
        EM(REQ_CLKS_OFF)                \
        EMe(REQ_CLKS_ON)

/* Enums require being exported to userspace, for user tool parsing */

#undef EM

#undef EMe

#define EM(a)	TRACE_DEFINE_ENUM(a);

#define EMe(a)	TRACE_DEFINE_ENUM(a);

UFS_LINK_STATES;
UFS_PWR_MODES;
UFSCHD_CLK_GATING_STATES;

/*
 * Now redefine the EM() and EMe() macros to map the enums to the strings
 * that will be printed in the output.
 */

#undef EM

#undef EMe

#define EM(a)	{ a, #a },

#define EMe(a)	{ a, #a }

TRACE_EVENT(ufshcd_clk_gating,

	TP_PROTO(const char *dev_name, int state),

	TP_ARGS(dev_name, state),

	TP_STRUCT__entry(
                __string(dev_name, dev_name)
                __field(int, state)
        ),

	TP_fast_assign(
                __assign_str(dev_name, dev_name);
                __entry->state = state;
        ),

	TP_printk("%s: gating state changed to %s",
                __get_str(dev_name),
                __print_symbolic(__entry->state, UFSCHD_CLK_GATING_STATES))
);

TRACE_EVENT(ufshcd_clk_scaling,

	TP_PROTO(const char *dev_name, const char *state, const char *clk,
                u32 prev_state, u32 curr_state),

	TP_ARGS(dev_name, state, clk, prev_state, curr_state),

	TP_STRUCT__entry(
                __string(dev_name, dev_name)
                __string(state, state)
                __string(clk, clk)
                __field(u32, prev_state)
                __field(u32, curr_state)
        ),

	TP_fast_assign(
                __assign_str(dev_name, dev_name);
                __assign_str(state, state);
                __assign_str(clk, clk);
                __entry->prev_state = prev_state;
                __entry->curr_state = curr_state;
        ),

	TP_printk("%s: %s %s from %u to %u Hz",
                __get_str(dev_name), __get_str(state), __get_str(clk),
                __entry->prev_state, __entry->curr_state)
);

TRACE_EVENT(ufshcd_auto_bkops_state,

	TP_PROTO(const char *dev_name, const char *state),

	TP_ARGS(dev_name, state),

	TP_STRUCT__entry(
                __string(dev_name, dev_name)
                __string(state, state)
        ),

	TP_fast_assign(
                __assign_str(dev_name, dev_name);
                __assign_str(state, state);
        ),

	TP_printk("%s: auto bkops - %s",
                __get_str(dev_name), __get_str(state))
);

DECLARE_EVENT_CLASS(ufshcd_profiling_template,
	TP_PROTO(const char *dev_name, const char *profile_info, s64 time_us,
                 int err),

	TP_ARGS(dev_name, profile_info, time_us, err),

	TP_STRUCT__entry(
                __string(dev_name, dev_name)
                __string(profile_info, profile_info)
                __field(s64, time_us)
                __field(int, err)
        ),

	TP_fast_assign(
                __assign_str(dev_name, dev_name);
                __assign_str(profile_info, profile_info);
                __entry->time_us = time_us;
                __entry->err = err;
        ),

	TP_printk("%s: %s: took %lld usecs, err %d",
                __get_str(dev_name), __get_str(profile_info),
                __entry->time_us, __entry->err)
);

DEFINE_EVENT(ufshcd_profiling_template, ufshcd_profile_hibern8,
	TP_PROTO(const char *dev_name, const char *profile_info, s64 time_us,
		 int err),
	TP_ARGS(dev_name, profile_info, time_us, err));

DEFINE_EVENT(ufshcd_profiling_template, ufshcd_profile_clk_gating,
	TP_PROTO(const char *dev_name, const char *profile_info, s64 time_us,
		 int err),
	TP_ARGS(dev_name, profile_info, time_us, err));

DEFINE_EVENT(ufshcd_profiling_template, ufshcd_profile_clk_scaling,
	TP_PROTO(const char *dev_name, const char *profile_info, s64 time_us,
		 int err),
	TP_ARGS(dev_name, profile_info, time_us, err));

DECLARE_EVENT_CLASS(ufshcd_template,
	TP_PROTO(const char *dev_name, int err, s64 usecs,
                 int dev_state, int link_state),

	TP_ARGS(dev_name, err, usecs, dev_state, link_state),

	TP_STRUCT__entry(
                __field(s64, usecs)
                __field(int, err)
                __string(dev_name, dev_name)
                __field(int, dev_state)
                __field(int, link_state)
        ),

	TP_fast_assign(
                __entry->usecs = usecs;
                __entry->err = err;
                __assign_str(dev_name, dev_name);
                __entry->dev_state = dev_state;
                __entry->link_state = link_state;
        ),

	TP_printk(
		"%s: took %lld usecs, dev_state: %s, link_state: %s, err %d",
                __get_str(dev_name),
                __entry->usecs,
                __print_symbolic(__entry->dev_state, UFS_PWR_MODES),
                __print_symbolic(__entry->link_state, UFS_LINK_STATES),
                __entry->err
        )
);

DEFINE_EVENT(ufshcd_template, ufshcd_system_suspend,
	     TP_PROTO(const char *dev_name, int err, s64 usecs,
		      int dev_state, int link_state),
	     TP_ARGS(dev_name, err, usecs, dev_state, link_state));

DEFINE_EVENT(ufshcd_template, ufshcd_system_resume,
	     TP_PROTO(const char *dev_name, int err, s64 usecs,
		      int dev_state, int link_state),
	     TP_ARGS(dev_name, err, usecs, dev_state, link_state));

DEFINE_EVENT(ufshcd_template, ufshcd_runtime_suspend,
	     TP_PROTO(const char *dev_name, int err, s64 usecs,
		      int dev_state, int link_state),
	     TP_ARGS(dev_name, err, usecs, dev_state, link_state));

DEFINE_EVENT(ufshcd_template, ufshcd_runtime_resume,
	     TP_PROTO(const char *dev_name, int err, s64 usecs,
		      int dev_state, int link_state),
	     TP_ARGS(dev_name, err, usecs, dev_state, link_state));

DEFINE_EVENT(ufshcd_template, ufshcd_init,
	     TP_PROTO(const char *dev_name, int err, s64 usecs,
		      int dev_state, int link_state),
	     TP_ARGS(dev_name, err, usecs, dev_state, link_state));

TRACE_EVENT(ufshcd_command,
	TP_PROTO(const char *dev_name, const char *str, unsigned int tag,
                        u32 doorbell, int transfer_len, u32 intr, u64 lba,
                        u8 opcode),

	TP_ARGS(dev_name, str, tag, doorbell, transfer_len, intr, lba, opcode),

	TP_STRUCT__entry(
                __string(dev_name, dev_name)
                __string(str, str)
                __field(unsigned int, tag)
                __field(u32, doorbell)
                __field(int, transfer_len)
                __field(u32, intr)
                __field(u64, lba)
                __field(u8, opcode)
        ),

	TP_fast_assign(
                __assign_str(dev_name, dev_name);
                __assign_str(str, str);
                __entry->tag = tag;
                __entry->doorbell = doorbell;
                __entry->transfer_len = transfer_len;
                __entry->intr = intr;
                __entry->lba = lba;
                __entry->opcode = opcode;
        ),

	TP_printk(
		"%s: %s: tag: %u, DB: 0x%x, size: %d, IS: %u, LBA: %llu, opcode: 0x%x",
                __get_str(str), __get_str(dev_name), __entry->tag,
                __entry->doorbell, __entry->transfer_len,
                __entry->intr, __entry->lba, (u32)__entry->opcode
        )
);

#endif /* if !defined(_TRACE_UFS_H) || defined(TRACE_HEADER_MULTI_READ) */

/* This part must be outside protection */
#include <trace/define_trace.h>

Overall Contributors

PersonTokensPropCommitsCommitProp
Subhash Jadavani43396.22%266.67%
Lee Susman173.78%133.33%
Total450100.00%3100.00%
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