The patch titled
s390: use DIV_ROUND_UP
has been added to the -mm tree. Its filename is
s390-use-div_round_up.patch
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------------------------------------------------------
Subject: s390: use DIV_ROUND_UP
From: Julia Lawall <julia@xxxxxxx>
The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) /
(d)) but is perhaps more readable.
An extract of the semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@haskernel@
@@
#include <linux/kernel.h>
@depends on haskernel@
expression n,d;
@@
(
- (n + d - 1) / d
+ DIV_ROUND_UP(n,d)
|
- (n + (d - 1)) / d
+ DIV_ROUND_UP(n,d)
)
@depends on haskernel@
expression n,d;
@@
- DIV_ROUND_UP((n),d)
+ DIV_ROUND_UP(n,d)
@depends on haskernel@
expression n,d;
@@
- DIV_ROUND_UP(n,(d))
+ DIV_ROUND_UP(n,d)
// </smpl>
Signed-off-by: Julia Lawall <julia@xxxxxxx>
Cc: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Cc: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/s390/net/claw.c | 15 +++++++--------
1 file changed, 7 insertions(+), 8 deletions(-)
diff -puN drivers/s390/net/claw.c~s390-use-div_round_up drivers/s390/net/claw.c
--- a/drivers/s390/net/claw.c~s390-use-div_round_up
+++ a/drivers/s390/net/claw.c
@@ -2114,8 +2114,7 @@ init_ccw_bk(struct net_device *dev)
*/
ccw_blocks_perpage= PAGE_SIZE / CCWBK_SIZE;
ccw_pages_required=
- (ccw_blocks_required+ccw_blocks_perpage -1) /
- ccw_blocks_perpage;
+ DIV_ROUND_UP(ccw_blocks_required, ccw_blocks_perpage);
#ifdef DEBUGMSG
printk(KERN_INFO "%s: %s() > ccw_blocks_perpage=%d\n",
@@ -2133,12 +2132,12 @@ init_ccw_bk(struct net_device *dev)
*/
if (privptr->p_env->read_size < PAGE_SIZE) {
claw_reads_perpage= PAGE_SIZE / privptr->p_env->read_size;
- claw_read_pages= (privptr->p_env->read_buffers +
- claw_reads_perpage -1) / claw_reads_perpage;
+ claw_read_pages=
+ DIV_ROUND_UP(privptr->p_env->read_buffers, claw_reads_perpage);
}
else { /* > or equal */
privptr->p_buff_pages_perread=
- (privptr->p_env->read_size + PAGE_SIZE - 1) / PAGE_SIZE;
+ DIV_ROUND_UP(privptr->p_env->read_size, PAGE_SIZE);
claw_read_pages=
privptr->p_env->read_buffers * privptr->p_buff_pages_perread;
}
@@ -2146,13 +2145,13 @@ init_ccw_bk(struct net_device *dev)
claw_writes_perpage=
PAGE_SIZE / privptr->p_env->write_size;
claw_write_pages=
- (privptr->p_env->write_buffers + claw_writes_perpage -1) /
- claw_writes_perpage;
+ DIV_ROUND_UP(privptr->p_env->write_buffers,
+ claw_writes_perpage);
}
else { /* > or equal */
privptr->p_buff_pages_perwrite=
- (privptr->p_env->read_size + PAGE_SIZE - 1) / PAGE_SIZE;
+ DIV_ROUND_UP(privptr->p_env->read_size, PAGE_SIZE);
claw_write_pages=
privptr->p_env->write_buffers * privptr->p_buff_pages_perwrite;
}
_
Patches currently in -mm which might be from julia@xxxxxxx are
git-hid.patch
git-net.patch
drivers-net-mv643xx_ethc-use-field_sizeof.patch
s390-use-div_round_up.patch
drivers-block-viodasdc-use-field_sizeof.patch
usb-use-div_round_up.patch
fbdev-use-div_round_up-or-roundup.patch
-
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