switch (entry->type) {
case TRACE_FN:
case TRACE_CTX:
+ case TRACE_WAKE:
+ case TRACE_STACK:
+ case TRACE_SPECIAL:
return 1;
}
return 0;
page = list_entry(data->trace_pages.next, struct page, lru);
entries = page_address(page);
+ check_pages(data);
if (head_page(data) != entries)
goto failed;
return 0;
failed:
+ /* disable tracing */
+ tracing_disabled = 1;
printk(KERN_CONT ".. corrupted trace buffer .. ");
return -1;
}
*/
static int trace_test_buffer(struct trace_array *tr, unsigned long *count)
{
- unsigned long cnt = 0;
- int cpu;
- int ret = 0;
+ unsigned long flags, cnt = 0;
+ int cpu, ret = 0;
+ /* Don't allow flipping of max traces now */
+ raw_local_irq_save(flags);
+ __raw_spin_lock(&ftrace_max_lock);
for_each_possible_cpu(cpu) {
if (!head_page(tr->data[cpu]))
continue;
if (ret)
break;
}
+ __raw_spin_unlock(&ftrace_max_lock);
+ raw_local_irq_restore(flags);
if (count)
*count = cnt;
#ifdef CONFIG_DYNAMIC_FTRACE
-#define DYN_FTRACE_TEST_NAME trace_selftest_dynamic_test_func
#define __STR(x) #x
#define STR(x) __STR(x)
-static int DYN_FTRACE_TEST_NAME(void)
-{
- /* used to call mcount */
- return 0;
-}
/* Test dynamic code modification and ftrace filters */
int trace_selftest_startup_dynamic_tracing(struct tracer *trace,
int ret;
int save_ftrace_enabled = ftrace_enabled;
int save_tracer_enabled = tracer_enabled;
+ char *func_name;
/* The ftrace test PASSED */
printk(KERN_CONT "PASSED\n");
return ret;
}
+ /*
+ * Some archs *cough*PowerPC*cough* add charachters to the
+ * start of the function names. We simply put a '*' to
+ * accomodate them.
+ */
+ func_name = "*" STR(DYN_FTRACE_TEST_NAME);
+
/* filter only on our function */
- ftrace_set_filter(STR(DYN_FTRACE_TEST_NAME),
- sizeof(STR(DYN_FTRACE_TEST_NAME)), 1);
+ ftrace_set_filter(func_name, strlen(func_name), 1);
/* enable tracing */
tr->ctrl = 1;
/* we should only have one item */
if (!ret && count != 1) {
- printk(KERN_CONT ".. filter failed ..");
+ printk(KERN_CONT ".. filter failed count=%ld ..", count);
ret = -1;
goto out;
}
ftrace_enabled = save_ftrace_enabled;
tracer_enabled = save_tracer_enabled;
+ /* kill ftrace totally if we failed */
+ if (ret)
+ ftrace_kill();
+
return ret;
}
#endif /* CONFIG_FTRACE */
#ifdef CONFIG_SCHED_TRACER
static int trace_wakeup_test_thread(void *data)
{
- struct completion *x = data;
-
/* Make this a RT thread, doesn't need to be too high */
+ struct sched_param param = { .sched_priority = 5 };
+ struct completion *x = data;
- rt_mutex_setprio(current, MAX_RT_PRIO - 5);
+ sched_setscheduler(current, SCHED_FIFO, ¶m);
/* Make it know we have a new prio */
complete(x);
return ret;
}
#endif /* CONFIG_CONTEXT_SWITCH_TRACER */
+
+#ifdef CONFIG_SYSPROF_TRACER
+int
+trace_selftest_startup_sysprof(struct tracer *trace, struct trace_array *tr)
+{
+ unsigned long count;
+ int ret;
+
+ /* start the tracing */
+ tr->ctrl = 1;
+ trace->init(tr);
+ /* Sleep for a 1/10 of a second */
+ msleep(100);
+ /* stop the tracing. */
+ tr->ctrl = 0;
+ trace->ctrl_update(tr);
+ /* check the trace buffer */
+ ret = trace_test_buffer(tr, &count);
+ trace->reset(tr);
+
+ return ret;
+}
+#endif /* CONFIG_SYSPROF_TRACER */