Merge branch 'tip/tracing/ftrace' of git://git.kernel.org/pub/scm/linux/kernel/git...

[linux-2.6-omap-h63xx.git] / kernel / trace / trace.c

diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index a941d257b6191d07e0374b0db2f65336287eccd2..5c9c6d9070547724ea979604648f89ed4c424244 100644 (file)
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -1176,7 +1176,8 @@ void trace_graph_return(struct ftrace_graph_ret *trace)
  */
 int trace_vprintk(unsigned long ip, int depth, const char *fmt, va_list args)
 {
-       static DEFINE_SPINLOCK(trace_buf_lock);
+       static raw_spinlock_t trace_buf_lock =
+               (raw_spinlock_t)__RAW_SPIN_LOCK_UNLOCKED;
        static u32 trace_buf[TRACE_BUF_SIZE];
 
        struct ring_buffer_event *event;
@@ -1201,7 +1202,9 @@ int trace_vprintk(unsigned long ip, int depth, const char *fmt, va_list args)
        if (unlikely(atomic_read(&data->disabled)))
                goto out;
 
-       spin_lock_irqsave(&trace_buf_lock, flags);
+       /* Lockdep uses trace_printk for lock tracing */
+       local_irq_save(flags);
+       __raw_spin_lock(&trace_buf_lock);
        len = vbin_printf(trace_buf, TRACE_BUF_SIZE, fmt, args);
 
        if (len > TRACE_BUF_SIZE || len < 0)
@@ -1220,7 +1223,8 @@ int trace_vprintk(unsigned long ip, int depth, const char *fmt, va_list args)
        ring_buffer_unlock_commit(tr->buffer, event);
 
 out_unlock:
-       spin_unlock_irqrestore(&trace_buf_lock, flags);
+       __raw_spin_unlock(&trace_buf_lock);
+       local_irq_restore(flags);
 
 out:
        ftrace_preempt_enable(resched);