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authorHaavard Skinnemoen <haavard.skinnemoen@atmel.com>2009-03-27 16:14:38 +0100
committerHaavard Skinnemoen <haavard.skinnemoen@atmel.com>2009-03-27 16:14:38 +0100
commitb92efa9abffc4a634cd2e7a0f81f8aa6310d67c9 (patch)
tree9847508d9b8d4e585f90db4a453bfbc3700c997e /drivers/oprofile/cpu_buffer.h
parenta16fffdd8eb95ebab7dc22414896fe6493951e0e (diff)
parentbe0ea69674ed95e1e98cb3687a241badc756d228 (diff)
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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into avr32-arch
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);