diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/trace.c | 29 |
1 files changed, 15 insertions, 14 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index 1d4ff568cc4..3536ef41575 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -522,23 +522,24 @@ int register_tracer(struct tracer *type) tracing_selftest_running = false; mutex_unlock(&trace_types_lock); - if (!ret && default_bootup_tracer) { - if (!strncmp(default_bootup_tracer, type->name, - BOOTUP_TRACER_SIZE)) { - printk(KERN_INFO "Starting tracer '%s'\n", - type->name); - /* Do we want this tracer to start on bootup? */ - tracing_set_tracer(type->name); - default_bootup_tracer = NULL; - /* disable other selftests, since this will break it. */ - tracing_selftest_disabled = 1; + if (ret || !default_bootup_tracer) + goto out_unlock; + + if (strncmp(default_bootup_tracer, type->name, BOOTUP_TRACER_SIZE)) + goto out_unlock; + + printk(KERN_INFO "Starting tracer '%s'\n", type->name); + /* Do we want this tracer to start on bootup? */ + tracing_set_tracer(type->name); + default_bootup_tracer = NULL; + /* disable other selftests, since this will break it. */ + tracing_selftest_disabled = 1; #ifdef CONFIG_FTRACE_STARTUP_TEST - printk(KERN_INFO "Disabling FTRACE selftests due" - " to running tracer '%s'\n", type->name); + printk(KERN_INFO "Disabling FTRACE selftests due to running tracer '%s'\n", + type->name); #endif - } - } + out_unlock: lock_kernel(); return ret; } |