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syslet: we have fls(), use it for rounding ring size up
[fio.git]
/
engines
/
syslet-rw.c
diff --git
a/engines/syslet-rw.c
b/engines/syslet-rw.c
index ab64054b9c5b7fd39c05067778878436f4db4bc5..7bb1be83618959ee5b7a87ec8e79bdfbbfb095a2 100644
(file)
--- a/
engines/syslet-rw.c
+++ b/
engines/syslet-rw.c
@@
-16,6
+16,7
@@
#include "../fio.h"
#include "../indirect.h"
#include "../syslet.h"
#include "../fio.h"
#include "../indirect.h"
#include "../syslet.h"
+#include "../fls.h"
#ifdef FIO_HAVE_SYSLET
#ifdef FIO_HAVE_SYSLET
@@
-243,14
+244,8
@@
static int fio_syslet_init(struct thread_data *td)
* The ring needs to be a power-of-2, so round it up if we have to
*/
ring_nr = td->o.iodepth;
* The ring needs to be a power-of-2, so round it up if we have to
*/
ring_nr = td->o.iodepth;
- if (ring_nr & (ring_nr - 1)) {
- int bits = 1;
-
- while (ring_nr >>= 1)
- bits++;
-
- ring_nr = 1 << bits;
- }
+ if (ring_nr & (ring_nr - 1))
+ ring_nr = 1 << fls(ring_nr);
ring_size = sizeof(struct syslet_ring) +
ring_nr * sizeof(struct syslet_completion);
ring_size = sizeof(struct syslet_ring) +
ring_nr * sizeof(struct syslet_completion);