Andrew Morton
d69a892268
[PATCH] Fix WARN_ON / WARN_ON_ONCE regression ...
Tim and Ananiev report that the recent WARN_ON_ONCE changes cause increased
cache misses with the tbench workload. Apparently due to the access to the
newly-added static variable.
Rearrange the code so that we don't touch that variable unless the warning is
going to trigger.
Also rework the logic so that the static variable starts out at zero, so we
can move it into bss.
It would seem logical to mark the static variable as __read_mostly too. But
it would be wrong, because that would put it back into the vmlinux image, and
the kernel will never read from this variable in normal operation anyway.
Unless the compiler or hardware go and do some prefetching on us?
For some reason this patch shrinks softirq.o text by 40 bytes.
Cc: Tim Chen <tim.c.chen@intel.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "Ananiev, Leonid I" <leonid.i.ananiev@intel.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-10-06 08:53:39 -07:00
[PATCH] rename the provided execve functions to kernel_execve
2006-10-02 07:57:23 -07:00
[PATCH] atmel_serial: Pass fixed register mappings through platform_data
2006-10-04 10:25:05 -07:00
fix file specification in comments
2006-10-03 23:01:26 +02:00
[PATCH] AVR32: Allow renumbering of serial devices
2006-10-04 10:25:06 -07:00
[PATCH] remove remaining errno and __KERNEL_SYSCALLS__ references
2006-10-02 07:57:23 -07:00
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
[PATCH] Fix WARN_ON / WARN_ON_ONCE regression
2006-10-06 08:53:39 -07:00
[PATCH] remove remaining errno and __KERNEL_SYSCALLS__ references
2006-10-02 07:57:23 -07:00
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
fix file specification in comments
2006-10-03 23:01:26 +02:00
fix file specification in comments
2006-10-03 23:01:26 +02:00
fix file specification in comments
2006-10-03 23:01:26 +02:00
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
[PARISC] Make DMA routines more stubby
2006-10-04 06:51:07 -06:00
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
fix file specification in comments
2006-10-03 23:01:26 +02:00
[S390] Remove open-coded mem_map usage.
2006-10-04 20:02:23 +02:00
fix file specification in comments
2006-10-03 23:01:26 +02:00
fix file specification in comments
2006-10-03 23:01:26 +02:00
fix file specification in comments
2006-10-03 23:01:26 +02:00
Remove all inclusions of <linux/config.h>
2006-10-04 03:38:54 -04:00
[PATCH] rename the provided execve functions to kernel_execve
2006-10-02 07:57:23 -07:00
[PATCH] remove remaining errno and __KERNEL_SYSCALLS__ references
2006-10-02 07:57:23 -07:00
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
fix file specification in comments
2006-10-03 23:01:26 +02:00
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
V4L/DVB (4666): Ensure the WM8775 driver is loaded generically for any board.
2006-10-03 15:13:48 -03:00
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
2006-10-01 17:55:53 +01:00
Remove all inclusions of <linux/config.h>
2006-10-04 03:38:54 -04:00
Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-misc-2.6
2006-10-04 18:57:35 -07:00
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
fix file specification in comments
2006-10-03 23:01:26 +02:00
d69a892268