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authorTakashi Iwai <tiwai@suse.de>2009-02-09 17:20:13 +0100
committerTakashi Iwai <tiwai@suse.de>2009-02-09 17:20:13 +0100
commitd9f8e9c34150ebec2be07bb95b6a23d99ba1f6de (patch)
tree1e8c402df9b1154f4ca37eb5242f960ef7aab747 /drivers/oprofile/cpu_buffer.h
parent2ebfb8eeb8f244f9d25937d31a947895cf819e26 (diff)
parent8bd4bb7a35e8ebb015a531218614c48e10a3c4ee (diff)
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Merge branch 'topic/quirk-cleanup' into topic/misc
Diffstat (limited to 'drivers/oprofile/cpu_buffer.h')
-rw-r--r--drivers/oprofile/cpu_buffer.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/oprofile/cpu_buffer.h b/drivers/oprofile/cpu_buffer.h
index 63f81c44846..272995d2029 100644
--- a/drivers/oprofile/cpu_buffer.h
+++ b/drivers/oprofile/cpu_buffer.h
@@ -66,6 +66,13 @@ static inline void op_cpu_buffer_reset(int cpu)
cpu_buf->last_task = NULL;
}
+/*
+ * op_cpu_buffer_add_data() and op_cpu_buffer_write_commit() may be
+ * called only if op_cpu_buffer_write_reserve() did not return NULL or
+ * entry->event != NULL, otherwise entry->size or entry->event will be
+ * used uninitialized.
+ */
+
struct op_sample
*op_cpu_buffer_write_reserve(struct op_entry *entry, unsigned long size);
int op_cpu_buffer_write_commit(struct op_entry *entry);