Release 4.11 kernel/trace/trace_sched_switch.c
/*
* trace context switch
*
* Copyright (C) 2007 Steven Rostedt <srostedt@redhat.com>
*
*/
#include <linux/module.h>
#include <linux/kallsyms.h>
#include <linux/uaccess.h>
#include <linux/ftrace.h>
#include <trace/events/sched.h>
#include "trace.h"
static int sched_ref;
static DEFINE_MUTEX(sched_register_mutex);
static void
probe_sched_switch(void *ignore, bool preempt,
struct task_struct *prev, struct task_struct *next)
{
if (unlikely(!sched_ref))
return;
tracing_record_cmdline(prev);
tracing_record_cmdline(next);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Steven Rostedt | 28 | 66.67% | 3 | 50.00% |
| Mathieu Desnoyers | 8 | 19.05% | 1 | 16.67% |
| Zhao Lei | 3 | 7.14% | 1 | 16.67% |
| Peter Zijlstra | 3 | 7.14% | 1 | 16.67% |
| Total | 42 | 100.00% | 6 | 100.00% |
static void
probe_sched_wakeup(void *ignore, struct task_struct *wakee)
{
if (unlikely(!sched_ref))
return;
tracing_record_cmdline(current);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Ingo Molnar | 15 | 51.72% | 2 | 33.33% |
| Mathieu Desnoyers | 7 | 24.14% | 2 | 33.33% |
| Steven Rostedt | 4 | 13.79% | 1 | 16.67% |
| Zhao Lei | 3 | 10.34% | 1 | 16.67% |
| Total | 29 | 100.00% | 6 | 100.00% |
static int tracing_sched_register(void)
{
int ret;
ret = register_trace_sched_wakeup(probe_sched_wakeup, NULL);
if (ret) {
pr_info("wakeup trace: Couldn't activate tracepoint"
" probe to kernel_sched_wakeup\n");
return ret;
}
ret = register_trace_sched_wakeup_new(probe_sched_wakeup, NULL);
if (ret) {
pr_info("wakeup trace: Couldn't activate tracepoint"
" probe to kernel_sched_wakeup_new\n");
goto fail_deprobe;
}
ret = register_trace_sched_switch(probe_sched_switch, NULL);
if (ret) {
pr_info("sched trace: Couldn't activate tracepoint"
" probe to kernel_sched_switch\n");
goto fail_deprobe_wake_new;
}
return ret;
fail_deprobe_wake_new:
unregister_trace_sched_wakeup_new(probe_sched_wakeup, NULL);
fail_deprobe:
unregister_trace_sched_wakeup(probe_sched_wakeup, NULL);
return ret;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mathieu Desnoyers | 96 | 89.72% | 2 | 50.00% |
| Steven Rostedt | 10 | 9.35% | 1 | 25.00% |
| Wenji Huang | 1 | 0.93% | 1 | 25.00% |
| Total | 107 | 100.00% | 4 | 100.00% |
static void tracing_sched_unregister(void)
{
unregister_trace_sched_switch(probe_sched_switch, NULL);
unregister_trace_sched_wakeup_new(probe_sched_wakeup, NULL);
unregister_trace_sched_wakeup(probe_sched_wakeup, NULL);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mathieu Desnoyers | 23 | 79.31% | 2 | 66.67% |
| Steven Rostedt | 6 | 20.69% | 1 | 33.33% |
| Total | 29 | 100.00% | 3 | 100.00% |
static void tracing_start_sched_switch(void)
{
mutex_lock(&sched_register_mutex);
if (!(sched_ref++))
tracing_sched_register();
mutex_unlock(&sched_register_mutex);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Frédéric Weisbecker | 20 | 64.52% | 2 | 50.00% |
| Mathieu Desnoyers | 10 | 32.26% | 1 | 25.00% |
| Ingo Molnar | 1 | 3.23% | 1 | 25.00% |
| Total | 31 | 100.00% | 4 | 100.00% |
static void tracing_stop_sched_switch(void)
{
mutex_lock(&sched_register_mutex);
if (!(--sched_ref))
tracing_sched_unregister();
mutex_unlock(&sched_register_mutex);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mathieu Desnoyers | 15 | 48.39% | 1 | 25.00% |
| Frédéric Weisbecker | 15 | 48.39% | 2 | 50.00% |
| Ingo Molnar | 1 | 3.23% | 1 | 25.00% |
| Total | 31 | 100.00% | 4 | 100.00% |
void tracing_start_cmdline_record(void)
{
tracing_start_sched_switch();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Steven Rostedt | 10 | 100.00% | 1 | 100.00% |
| Total | 10 | 100.00% | 1 | 100.00% |
void tracing_stop_cmdline_record(void)
{
tracing_stop_sched_switch();
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Steven Rostedt | 10 | 100.00% | 1 | 100.00% |
| Total | 10 | 100.00% | 1 | 100.00% |
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| Mathieu Desnoyers | 163 | 51.26% | 2 | 14.29% |
| Steven Rostedt | 86 | 27.04% | 4 | 28.57% |
| Frédéric Weisbecker | 42 | 13.21% | 2 | 14.29% |
| Ingo Molnar | 17 | 5.35% | 3 | 21.43% |
| Zhao Lei | 6 | 1.89% | 1 | 7.14% |
| Peter Zijlstra | 3 | 0.94% | 1 | 7.14% |
| Wenji Huang | 1 | 0.31% | 1 | 7.14% |
| Total | 318 | 100.00% | 14 | 100.00% |
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