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authorDavid Woodhouse <David.Woodhouse@intel.com>2009-09-20 08:55:36 -0400
committerDavid Woodhouse <David.Woodhouse@intel.com>2009-09-20 08:55:36 -0400
commit6469f540ea37d53db089c8fea9c0c77a3d9353d4 (patch)
tree1dc9dc077150d57f4424cae49e711b5dd6e903a1 /include/linux/ring_buffer.h
parent304e6d5fe294b80e6d3107f99ec241816390ebcc (diff)
parent78f28b7c555359c67c2a0d23f7436e915329421e (diff)
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts: drivers/mtd/mtdcore.c Merged in order that I can apply the Nomadik nand/onenand support patches.
Diffstat (limited to 'include/linux/ring_buffer.h')
-rw-r--r--include/linux/ring_buffer.h24
1 files changed, 9 insertions, 15 deletions
diff --git a/include/linux/ring_buffer.h b/include/linux/ring_buffer.h
index 29f8599e6bea..5fcc31ed5771 100644
--- a/include/linux/ring_buffer.h
+++ b/include/linux/ring_buffer.h
@@ -75,20 +75,6 @@ ring_buffer_event_time_delta(struct ring_buffer_event *event)
75} 75}
76 76
77/* 77/*
78 * ring_buffer_event_discard can discard any event in the ring buffer.
79 * it is up to the caller to protect against a reader from
80 * consuming it or a writer from wrapping and replacing it.
81 *
82 * No external protection is needed if this is called before
83 * the event is commited. But in that case it would be better to
84 * use ring_buffer_discard_commit.
85 *
86 * Note, if an event that has not been committed is discarded
87 * with ring_buffer_event_discard, it must still be committed.
88 */
89void ring_buffer_event_discard(struct ring_buffer_event *event);
90
91/*
92 * ring_buffer_discard_commit will remove an event that has not 78 * ring_buffer_discard_commit will remove an event that has not
93 * ben committed yet. If this is used, then ring_buffer_unlock_commit 79 * ben committed yet. If this is used, then ring_buffer_unlock_commit
94 * must not be called on the discarded event. This function 80 * must not be called on the discarded event. This function
@@ -154,8 +140,17 @@ unsigned long ring_buffer_size(struct ring_buffer *buffer);
154void ring_buffer_reset_cpu(struct ring_buffer *buffer, int cpu); 140void ring_buffer_reset_cpu(struct ring_buffer *buffer, int cpu);
155void ring_buffer_reset(struct ring_buffer *buffer); 141void ring_buffer_reset(struct ring_buffer *buffer);
156 142
143#ifdef CONFIG_RING_BUFFER_ALLOW_SWAP
157int ring_buffer_swap_cpu(struct ring_buffer *buffer_a, 144int ring_buffer_swap_cpu(struct ring_buffer *buffer_a,
158 struct ring_buffer *buffer_b, int cpu); 145 struct ring_buffer *buffer_b, int cpu);
146#else
147static inline int
148ring_buffer_swap_cpu(struct ring_buffer *buffer_a,
149 struct ring_buffer *buffer_b, int cpu)
150{
151 return -ENODEV;
152}
153#endif
159 154
160int ring_buffer_empty(struct ring_buffer *buffer); 155int ring_buffer_empty(struct ring_buffer *buffer);
161int ring_buffer_empty_cpu(struct ring_buffer *buffer, int cpu); 156int ring_buffer_empty_cpu(struct ring_buffer *buffer, int cpu);
@@ -170,7 +165,6 @@ unsigned long ring_buffer_overruns(struct ring_buffer *buffer);
170unsigned long ring_buffer_entries_cpu(struct ring_buffer *buffer, int cpu); 165unsigned long ring_buffer_entries_cpu(struct ring_buffer *buffer, int cpu);
171unsigned long ring_buffer_overrun_cpu(struct ring_buffer *buffer, int cpu); 166unsigned long ring_buffer_overrun_cpu(struct ring_buffer *buffer, int cpu);
172unsigned long ring_buffer_commit_overrun_cpu(struct ring_buffer *buffer, int cpu); 167unsigned long ring_buffer_commit_overrun_cpu(struct ring_buffer *buffer, int cpu);
173unsigned long ring_buffer_nmi_dropped_cpu(struct ring_buffer *buffer, int cpu);
174 168
175u64 ring_buffer_time_stamp(struct ring_buffer *buffer, int cpu); 169u64 ring_buffer_time_stamp(struct ring_buffer *buffer, int cpu);
176void ring_buffer_normalize_time_stamp(struct ring_buffer *buffer, 170void ring_buffer_normalize_time_stamp(struct ring_buffer *buffer,