projects / linux-2.6-block.git / blame
| Commit | Line | Data |
|---|---|---|
| 3a73333f SRG |
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 | */ | |
| 21 | TRACE_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 | ||
| 31 | TP_ARGS(preempt, prev, next), | |
| 32 | ||
| 33 | /* | |
| 34 | * The next fields are where the customization happens. | |
| 35 | * The TP_STRUCT__entry() defines what will be recorded | |
| 36 | * in the ring buffer when the custom event triggers. | |
| 37 | * | |
| 38 | * The rest is just like the TRACE_EVENT() macro except that | |
| 39 | * it uses the custom entry. | |
| 40 | */ | |
| 41 | TP_STRUCT__entry( | |
| 42 | __field( unsigned short, prev_prio ) | |
| 43 | __field( unsigned short, next_prio ) | |
| 44 | __field( pid_t, next_pid ) | |
| 45 | ), | |
| 46 | ||
| 47 | TP_fast_assign( | |
| 48 | __entry->prev_prio = prev->prio; | |
| 49 | __entry->next_pid = next->pid; | |
| 50 | __entry->next_prio = next->prio; | |
| 51 | ), | |
| 52 | ||
| 53 | TP_printk("prev_prio=%d next_pid=%d next_prio=%d", | |
| 54 | __entry->prev_prio, __entry->next_pid, __entry->next_prio) | |
| 55 | ) | |
| 56 | ||
| 57 | ||
| 58 | TRACE_CUSTOM_EVENT(sched_waking, | |
| 59 | ||
| 60 | TP_PROTO(struct task_struct *p), | |
| 61 | ||
| 62 | TP_ARGS(p), | |
| 63 | ||
| 64 | TP_STRUCT__entry( | |
| 65 | __field( pid_t, pid ) | |
| 66 | __field( unsigned short, prio ) | |
| 67 | ), | |
| 68 | ||
| 69 | TP_fast_assign( | |
| 70 | __entry->pid = p->pid; | |
| 71 | __entry->prio = p->prio; | |
| 72 | ), | |
| 73 | ||
| 74 | TP_printk("pid=%d prio=%d", __entry->pid, __entry->prio) | |
| 75 | ) | |
| 76 | #endif | |
| 77 | /* | |
| 78 | * Just like the headers that create TRACE_EVENTs, the below must | |
| 79 | * be outside the protection of the above #if block. | |
| 80 | */ | |
| 81 | ||
| 82 | /* | |
| 83 | * It is required that the Makefile includes: | |
| 84 | * CFLAGS_<c_file>.o := -I$(src) | |
| 85 | */ | |
| 86 | #undef TRACE_INCLUDE_PATH | |
| 87 | #undef TRACE_INCLUDE_FILE | |
| 88 | #define TRACE_INCLUDE_PATH . | |
| 89 | ||
| 90 | /* | |
| 91 | * It is requred that the TRACE_INCLUDE_FILE be the same | |
| 92 | * as this file without the ".h". | |
| 93 | */ | |
| 94 | #define TRACE_INCLUDE_FILE trace_custom_sched | |
| 95 | #include <trace/define_custom_trace.h> |