schedstatistics.h
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1 /*
2  * Copyright (C) 2014 Freie Universität Berlin
3  * 2019 Inria
4  *
5  * This file is subject to the terms and conditions of the GNU Lesser
6  * General Public License v2.1. See the file LICENSE in the top level
7  * directory for more details.
8  */
9 
10 #pragma once
11 
31 #include <stdint.h>
32 
33 #ifdef __cplusplus
34  extern "C" {
35 #endif
36 
40 typedef struct {
41  uint32_t laststart;
43  unsigned int schedules;
44  uint64_t runtime_us;
45 } schedstat_t;
46 
50 extern schedstat_t sched_pidlist[KERNEL_PID_LAST + 1];
51 
56 void init_schedstatistics(void);
57 
58 #ifdef __cplusplus
59 }
60 #endif
61 
KERNEL_PID_LAST
#define KERNEL_PID_LAST
The last valid PID (inclusive).
Definition: sched.h:119
sched_pidlist
schedstat_t sched_pidlist[KERNEL_PID_LAST+1]
Thread statistics table.
init_schedstatistics
void init_schedstatistics(void)
Registers the sched statistics callback and sets laststart for caller thread.
schedstat_t
Scheduler statistics.
Definition: schedstatistics.h:40
schedstat_t::schedules
unsigned int schedules
How often the thread was scheduled to run.
Definition: schedstatistics.h:43
schedstat_t::runtime_us
uint64_t runtime_us
The total runtime of this thread in microseconds.
Definition: schedstatistics.h:44
schedstat_t::laststart
uint32_t laststart
Time stamp of the last time this thread was scheduled to run.
Definition: schedstatistics.h:41