aboutsummaryrefslogtreecommitdiffstats
path: root/kernel/trace/ring_buffer.c
diff options
context:
space:
mode:
authorLinus Torvalds <torvalds@linux-foundation.org>2009-11-02 12:45:44 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2009-11-02 12:45:44 -0500
commita5e3013d6612d2ed4aefdcd7920ae01df3b63b3a (patch)
tree89dce7d51c11ea56150e4f5613a28369e238f90e /kernel/trace/ring_buffer.c
parentefcd9e0b91bcb92a1dd530d1a1f26eb83a5d21e2 (diff)
parent6d3f1e12f46a2f9a1bb7e7aa433df8dd31ce5647 (diff)
Merge branch 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'tracing-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: tracing: Remove cpu arg from the rb_time_stamp() function tracing: Fix comment typo and documentation example tracing: Fix trace_seq_printf() return value tracing: Update *ppos instead of filp->f_pos
Diffstat (limited to 'kernel/trace/ring_buffer.c')
-rw-r--r--kernel/trace/ring_buffer.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index d4ff01970547..3ffa502fb243 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -483,7 +483,7 @@ struct ring_buffer_iter {
483/* Up this if you want to test the TIME_EXTENTS and normalization */ 483/* Up this if you want to test the TIME_EXTENTS and normalization */
484#define DEBUG_SHIFT 0 484#define DEBUG_SHIFT 0
485 485
486static inline u64 rb_time_stamp(struct ring_buffer *buffer, int cpu) 486static inline u64 rb_time_stamp(struct ring_buffer *buffer)
487{ 487{
488 /* shift to debug/test normalization and TIME_EXTENTS */ 488 /* shift to debug/test normalization and TIME_EXTENTS */
489 return buffer->clock() << DEBUG_SHIFT; 489 return buffer->clock() << DEBUG_SHIFT;
@@ -494,7 +494,7 @@ u64 ring_buffer_time_stamp(struct ring_buffer *buffer, int cpu)
494 u64 time; 494 u64 time;
495 495
496 preempt_disable_notrace(); 496 preempt_disable_notrace();
497 time = rb_time_stamp(buffer, cpu); 497 time = rb_time_stamp(buffer);
498 preempt_enable_no_resched_notrace(); 498 preempt_enable_no_resched_notrace();
499 499
500 return time; 500 return time;
@@ -599,7 +599,7 @@ static struct list_head *rb_list_head(struct list_head *list)
599} 599}
600 600
601/* 601/*
602 * rb_is_head_page - test if the give page is the head page 602 * rb_is_head_page - test if the given page is the head page
603 * 603 *
604 * Because the reader may move the head_page pointer, we can 604 * Because the reader may move the head_page pointer, we can
605 * not trust what the head page is (it may be pointing to 605 * not trust what the head page is (it may be pointing to
@@ -1868,7 +1868,7 @@ rb_move_tail(struct ring_buffer_per_cpu *cpu_buffer,
1868 * Nested commits always have zero deltas, so 1868 * Nested commits always have zero deltas, so
1869 * just reread the time stamp 1869 * just reread the time stamp
1870 */ 1870 */
1871 *ts = rb_time_stamp(buffer, cpu_buffer->cpu); 1871 *ts = rb_time_stamp(buffer);
1872 next_page->page->time_stamp = *ts; 1872 next_page->page->time_stamp = *ts;
1873 } 1873 }
1874 1874
@@ -2111,7 +2111,7 @@ rb_reserve_next_event(struct ring_buffer *buffer,
2111 if (RB_WARN_ON(cpu_buffer, ++nr_loops > 1000)) 2111 if (RB_WARN_ON(cpu_buffer, ++nr_loops > 1000))
2112 goto out_fail; 2112 goto out_fail;
2113 2113
2114 ts = rb_time_stamp(cpu_buffer->buffer, cpu_buffer->cpu); 2114 ts = rb_time_stamp(cpu_buffer->buffer);
2115 2115
2116 /* 2116 /*
2117 * Only the first commit can update the timestamp. 2117 * Only the first commit can update the timestamp.
@@ -2681,7 +2681,7 @@ unsigned long ring_buffer_entries(struct ring_buffer *buffer)
2681EXPORT_SYMBOL_GPL(ring_buffer_entries); 2681EXPORT_SYMBOL_GPL(ring_buffer_entries);
2682 2682
2683/** 2683/**
2684 * ring_buffer_overrun_cpu - get the number of overruns in buffer 2684 * ring_buffer_overruns - get the number of overruns in buffer
2685 * @buffer: The ring buffer 2685 * @buffer: The ring buffer
2686 * 2686 *
2687 * Returns the total number of overruns in the ring buffer 2687 * Returns the total number of overruns in the ring buffer