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ftrace: sched special
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
parent
36fc25a9f4
commit
88a4216c3e
4 changed files with 36 additions and 3 deletions
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@ -2138,6 +2138,8 @@ extern void
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ftrace_wake_up_task(void *rq, struct task_struct *wakee,
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ftrace_wake_up_task(void *rq, struct task_struct *wakee,
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struct task_struct *curr);
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struct task_struct *curr);
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extern void ftrace_all_fair_tasks(void *__rq, void *__tr, void *__data);
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extern void ftrace_all_fair_tasks(void *__rq, void *__tr, void *__data);
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extern void
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ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3);
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#else
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#else
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static inline void
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static inline void
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ftrace_ctx_switch(void *rq, struct task_struct *prev, struct task_struct *next)
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ftrace_ctx_switch(void *rq, struct task_struct *prev, struct task_struct *next)
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@ -2155,6 +2157,10 @@ ftrace_wake_up_task(void *rq, struct task_struct *wakee,
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static inline void ftrace_all_fair_tasks(void *__rq, void *__tr, void *__data)
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static inline void ftrace_all_fair_tasks(void *__rq, void *__tr, void *__data)
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{
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{
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}
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}
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static inline void
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ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3)
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{
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}
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#endif
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#endif
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extern long sched_setaffinity(pid_t pid, const cpumask_t *new_mask);
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extern long sched_setaffinity(pid_t pid, const cpumask_t *new_mask);
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@ -1061,6 +1061,8 @@ wake_affine(struct rq *rq, struct sched_domain *this_sd, struct rq *this_rq,
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if (!(this_sd->flags & SD_WAKE_AFFINE))
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if (!(this_sd->flags & SD_WAKE_AFFINE))
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return 0;
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return 0;
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ftrace_special(__LINE__, curr->se.avg_overlap, sync);
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ftrace_special(__LINE__, p->se.avg_overlap, -1);
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/*
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/*
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* If the currently running task will sleep within
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* If the currently running task will sleep within
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* a reasonable amount of time then attract this newly
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* a reasonable amount of time then attract this newly
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@ -1238,6 +1240,7 @@ static void check_preempt_wakeup(struct rq *rq, struct task_struct *p)
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if (unlikely(se == pse))
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if (unlikely(se == pse))
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return;
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return;
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ftrace_special(__LINE__, p->pid, se->last_wakeup);
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cfs_rq_of(pse)->next = pse;
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cfs_rq_of(pse)->next = pse;
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/*
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/*
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@ -1251,7 +1251,7 @@ print_lat_fmt(struct trace_iterator *iter, unsigned int trace_idx, int cpu)
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comm);
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comm);
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break;
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break;
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case TRACE_SPECIAL:
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case TRACE_SPECIAL:
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trace_seq_printf(s, " %ld %ld %ld\n",
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trace_seq_printf(s, "# %ld %ld %ld\n",
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entry->special.arg1,
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entry->special.arg1,
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entry->special.arg2,
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entry->special.arg2,
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entry->special.arg3);
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entry->special.arg3);
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@ -1335,7 +1335,7 @@ static int print_trace_fmt(struct trace_iterator *iter)
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return 0;
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return 0;
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break;
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break;
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case TRACE_SPECIAL:
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case TRACE_SPECIAL:
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ret = trace_seq_printf(s, " %ld %ld %ld\n",
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ret = trace_seq_printf(s, "# %ld %ld %ld\n",
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entry->special.arg1,
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entry->special.arg1,
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entry->special.arg2,
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entry->special.arg2,
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entry->special.arg3);
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entry->special.arg3);
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@ -1400,7 +1400,7 @@ static int print_raw_fmt(struct trace_iterator *iter)
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break;
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break;
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case TRACE_SPECIAL:
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case TRACE_SPECIAL:
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case TRACE_STACK:
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case TRACE_STACK:
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ret = trace_seq_printf(s, " %ld %ld %ld\n",
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ret = trace_seq_printf(s, "# %ld %ld %ld\n",
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entry->special.arg1,
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entry->special.arg1,
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entry->special.arg2,
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entry->special.arg2,
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entry->special.arg3);
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entry->special.arg3);
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@ -103,6 +103,30 @@ ftrace_wake_up_task(void *__rq, struct task_struct *wakee,
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wakeup_sched_wakeup(wakee, curr);
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wakeup_sched_wakeup(wakee, curr);
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}
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}
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void
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ftrace_special(unsigned long arg1, unsigned long arg2, unsigned long arg3)
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{
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struct trace_array *tr = ctx_trace;
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struct trace_array_cpu *data;
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unsigned long flags;
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long disabled;
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int cpu;
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if (!tracer_enabled)
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return;
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local_irq_save(flags);
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cpu = raw_smp_processor_id();
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data = tr->data[cpu];
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disabled = atomic_inc_return(&data->disabled);
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if (likely(disabled == 1))
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__trace_special(tr, data, arg1, arg2, arg3);
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atomic_dec(&data->disabled);
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local_irq_restore(flags);
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}
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static void sched_switch_reset(struct trace_array *tr)
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static void sched_switch_reset(struct trace_array *tr)
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{
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{
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int cpu;
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int cpu;
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