forked from luck/tmp_suning_uos_patched
ftrace: sysprof-plugin, add self-tests
Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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@ -280,6 +280,10 @@ extern int trace_selftest_startup_wakeup(struct tracer *trace,
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extern int trace_selftest_startup_sched_switch(struct tracer *trace,
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extern int trace_selftest_startup_sched_switch(struct tracer *trace,
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struct trace_array *tr);
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struct trace_array *tr);
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#endif
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#endif
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#ifdef CONFIG_SYSPROF_TRACER
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extern int trace_selftest_startup_sysprof(struct tracer *trace,
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struct trace_array *tr);
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#endif
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#endif /* CONFIG_FTRACE_STARTUP_TEST */
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#endif /* CONFIG_FTRACE_STARTUP_TEST */
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extern void *head_page(struct trace_array_cpu *data);
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extern void *head_page(struct trace_array_cpu *data);
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@ -537,3 +537,31 @@ trace_selftest_startup_sched_switch(struct tracer *trace, struct trace_array *tr
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return ret;
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return ret;
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}
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}
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#endif /* CONFIG_CONTEXT_SWITCH_TRACER */
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#endif /* CONFIG_CONTEXT_SWITCH_TRACER */
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#ifdef CONFIG_SYSPROF_TRACER
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int
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trace_selftest_startup_sysprof(struct tracer *trace, struct trace_array *tr)
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{
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unsigned long count;
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int ret;
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/* start the tracing */
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tr->ctrl = 1;
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trace->init(tr);
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/* Sleep for a 1/10 of a second */
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msleep(100);
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/* stop the tracing. */
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tr->ctrl = 0;
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trace->ctrl_update(tr);
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/* check the trace buffer */
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ret = trace_test_buffer(tr, &count);
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trace->reset(tr);
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if (!ret && !count) {
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printk(KERN_CONT ".. no entries found ..");
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ret = -1;
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}
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return ret;
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}
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#endif /* CONFIG_SYSPROF_TRACER */
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@ -126,7 +126,7 @@ static void start_stack_timers(void)
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for_each_online_cpu(cpu) {
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for_each_online_cpu(cpu) {
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set_cpus_allowed_ptr(current, &cpumask_of_cpu(cpu));
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set_cpus_allowed_ptr(current, &cpumask_of_cpu(cpu));
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start_stack_timer(cpu);
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start_stack_timer(cpu);
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printk("started timer on cpu%d\n", cpu);
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printk(KERN_INFO "started sysprof timer on cpu%d\n", cpu);
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}
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}
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set_cpus_allowed_ptr(current, &saved_mask);
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set_cpus_allowed_ptr(current, &saved_mask);
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}
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}
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@ -136,7 +136,7 @@ static void stop_stack_timer(int cpu)
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struct hrtimer *hrtimer = &per_cpu(stack_trace_hrtimer, cpu);
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struct hrtimer *hrtimer = &per_cpu(stack_trace_hrtimer, cpu);
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hrtimer_cancel(hrtimer);
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hrtimer_cancel(hrtimer);
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printk("cancelled timer on cpu%d\n", cpu);
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printk(KERN_INFO "cancelled sysprof timer on cpu%d\n", cpu);
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}
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}
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static void stop_stack_timers(void)
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static void stop_stack_timers(void)
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@ -200,7 +200,7 @@ static struct tracer stack_trace __read_mostly =
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.reset = stack_trace_reset,
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.reset = stack_trace_reset,
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.ctrl_update = stack_trace_ctrl_update,
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.ctrl_update = stack_trace_ctrl_update,
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#ifdef CONFIG_FTRACE_SELFTEST
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#ifdef CONFIG_FTRACE_SELFTEST
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.selftest = trace_selftest_startup_stack,
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.selftest = trace_selftest_startup_sysprof,
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#endif
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#endif
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};
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};
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