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/* SPDX-License-Identifier: GPL-2.0 */
/*
* Like the headers that use TRACE_EVENT(), the TRACE_CUSTOM_EVENT()
* needs a header that allows for multiple inclusions.
*
* Test for a unique name (here we have _TRACE_CUSTOM_SCHED_H),
* also allowing to continue if TRACE_CUSTOM_MULTI_READ is defined.
*/
#if !defined(_TRACE_CUSTOM_SCHED_H) || defined(TRACE_CUSTOM_MULTI_READ)
#define _TRACE_CUSTOM_SCHED_H
/* Include linux/trace_events.h for initial defines of TRACE_CUSTOM_EVENT() */
#include <linux/trace_events.h>
/*
* TRACE_CUSTOM_EVENT() is just like TRACE_EVENT(). The first parameter
* is the event name of an existing event where the TRACE_EVENT has been included
* in the C file before including this file.
*/
TRACE_CUSTOM_EVENT(sched_switch,
/*
* The TP_PROTO() and TP_ARGS must match the trace event
* that the custom event is using.
*/
TP_PROTO(bool preempt,
struct task_struct *prev,
struct task_struct *next,
unsigned int prev_state),
TP_ARGS(preempt, prev, next, prev_state),
/*
* The next fields are where the customization happens.
* The TP_STRUCT__entry() defines what will be recorded
* in the ring buffer when the custom event triggers.
*
* The rest is just like the TRACE_EVENT() macro except that
* it uses the custom entry.
*/
TP_STRUCT__entry(
__field( unsigned short, prev_prio )
__field( unsigned short, next_prio )
__field( pid_t, next_pid )
),
TP_fast_assign(
__entry->prev_prio = prev->prio;
__entry->next_pid = next->pid;
__entry->next_prio = next->prio;
),
TP_printk("prev_prio=%d next_pid=%d next_prio=%d",
__entry->prev_prio, __entry->next_pid, __entry->next_prio)
)
TRACE_CUSTOM_EVENT(sched_waking,
TP_PROTO(struct task_struct *p),
TP_ARGS(p),
TP_STRUCT__entry(
__field( pid_t, pid )
__field( unsigned short, prio )
),
TP_fast_assign(
__entry->pid = p->pid;
__entry->prio = p->prio;
),
TP_printk("pid=%d prio=%d", __entry->pid, __entry->prio)
)
#endif
/*
* Just like the headers that create TRACE_EVENTs, the below must
* be outside the protection of the above #if block.
*/
/*
* It is required that the Makefile includes:
* CFLAGS_<c_file>.o := -I$(src)
*/
#undef TRACE_INCLUDE_PATH
#undef TRACE_INCLUDE_FILE
#define TRACE_INCLUDE_PATH .
/*
* It is requred that the TRACE_INCLUDE_FILE be the same
* as this file without the ".h".
*/
#define TRACE_INCLUDE_FILE trace_custom_sched
#include <trace/define_custom_trace.h>
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