cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

trace_custom_sched.h (2463B)

      1/* SPDX-License-Identifier: GPL-2.0 */
      2
      3/*
      4 * Like the headers that use TRACE_EVENT(), the TRACE_CUSTOM_EVENT()
      5 * needs a header that allows for multiple inclusions.
      6 *
      7 * Test for a unique name (here we have _TRACE_CUSTOM_SCHED_H),
      8 * also allowing to continue if TRACE_CUSTOM_MULTI_READ is defined.
      9 */
     10#if !defined(_TRACE_CUSTOM_SCHED_H) || defined(TRACE_CUSTOM_MULTI_READ)
     11#define _TRACE_CUSTOM_SCHED_H
     12
     13/* Include linux/trace_events.h for initial defines of TRACE_CUSTOM_EVENT() */
     14#include <linux/trace_events.h>
     15
     16/*
     17 * TRACE_CUSTOM_EVENT() is just like TRACE_EVENT(). The first parameter
     18 * is the event name of an existing event where the TRACE_EVENT has been included
     19 * in the C file before including this file.
     20 */
     21TRACE_CUSTOM_EVENT(sched_switch,
     22
     23	/*
     24	 * The TP_PROTO() and TP_ARGS must match the trace event
     25	 * that the custom event is using.
     26	 */
     27	TP_PROTO(bool preempt,
     28		 struct task_struct *prev,
     29		 struct task_struct *next,
     30		 unsigned int prev_state),
     31
     32	TP_ARGS(preempt, prev, next, prev_state),
     33
     34	/*
     35	 * The next fields are where the customization happens.
     36	 * The TP_STRUCT__entry() defines what will be recorded
     37	 * in the ring buffer when the custom event triggers.
     38	 *
     39	 * The rest is just like the TRACE_EVENT() macro except that
     40	 * it uses the custom entry.
     41	 */
     42	TP_STRUCT__entry(
     43		__field(	unsigned short,		prev_prio	)
     44		__field(	unsigned short,		next_prio	)
     45		__field(	pid_t,	next_pid			)
     46	),
     47
     48	TP_fast_assign(
     49		__entry->prev_prio	= prev->prio;
     50		__entry->next_pid	= next->pid;
     51		__entry->next_prio	= next->prio;
     52	),
     53
     54	TP_printk("prev_prio=%d next_pid=%d next_prio=%d",
     55		  __entry->prev_prio, __entry->next_pid, __entry->next_prio)
     56)
     57
     58
     59TRACE_CUSTOM_EVENT(sched_waking,
     60
     61	TP_PROTO(struct task_struct *p),
     62
     63	TP_ARGS(p),
     64
     65	TP_STRUCT__entry(
     66		__field(	pid_t,			pid	)
     67		__field(	unsigned short,		prio	)
     68	),
     69
     70	TP_fast_assign(
     71		__entry->pid	= p->pid;
     72		__entry->prio	= p->prio;
     73	),
     74
     75	TP_printk("pid=%d prio=%d", __entry->pid, __entry->prio)
     76)
     77#endif
     78/*
     79 * Just like the headers that create TRACE_EVENTs, the below must
     80 * be outside the protection of the above #if block.
     81 */
     82
     83/*
     84 * It is required that the Makefile includes:
     85 *    CFLAGS_<c_file>.o := -I$(src)
     86 */
     87#undef TRACE_INCLUDE_PATH
     88#undef TRACE_INCLUDE_FILE
     89#define TRACE_INCLUDE_PATH .
     90
     91/*
     92 * It is requred that the TRACE_INCLUDE_FILE be the same
     93 * as this file without the ".h".
     94 */
     95#define TRACE_INCLUDE_FILE trace_custom_sched
     96#include <trace/define_custom_trace.h>