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OProfile: moving increment_tail() in buffer_sync.c

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Signed-off-by: Robert Richter <robert.richter@amd.com>
Cc: oprofile-list <oprofile-list@lists.sourceforge.net>
Cc: Barry Kasindorf <barry.kasindorf@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Robert Richter 2008-07-22 21:08:52 +02:00 committed by Ingo Molnar
parent 73185e0a5d
commit 5e11f98dce
1 changed files with 11 additions and 13 deletions
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24
drivers/oprofile/buffer_sync.c
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@ -268,6 +268,17 @@ lookup_dcookie(struct mm_struct *mm, unsigned long addr, off_t *offset)
return cookie;
}
static void increment_tail(struct oprofile_cpu_buffer *b)
{
unsigned long new_tail = b->tail_pos + 1;
rmb();
if (new_tail < b->buffer_size)
b->tail_pos = new_tail;
else
b->tail_pos = 0;
}
static unsigned long last_cookie = INVALID_COOKIE;
@ -417,19 +428,6 @@ static unsigned long get_slots(struct oprofile_cpu_buffer *b)
}
static void increment_tail(struct oprofile_cpu_buffer *b)
{
unsigned long new_tail = b->tail_pos + 1;
rmb();
if (new_tail < b->buffer_size)
b->tail_pos = new_tail;
else
b->tail_pos = 0;
}
/* Move tasks along towards death. Any tasks on dead_tasks
* will definitely have no remaining references in any
* CPU buffers at this point, because we use two lists,