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
..
bitops
[PATCH] bitops: generic minix_{test,set,test_and_clear,test,find_first_zero}_bit()
2006-03-26 08:57:11 -08:00
4level-fixup.h
[PATCH] Standardize pxx_page macros
2006-09-26 08:48:51 -07:00
atomic.h
audit_change_attr.h
[PATCH] fix missing ifdefs in syscall classes hookup for generic targets
2006-09-22 17:48:56 -07:00
audit_dir_write.h
[PATCH] fix missing ifdefs in syscall classes hookup for generic targets
2006-09-22 17:48:56 -07:00
audit_read.h
[PATCH] audit: more syscall classes added
2006-09-11 13:32:27 -04:00
audit_write.h
[PATCH] audit: more syscall classes added
2006-09-11 13:32:27 -04:00
bitops.h
[PATCH] bitops: update include/asm-generic/bitops.h
2006-03-26 08:57:15 -08:00
bug.h
[PATCH] Fix WARN_ON / WARN_ON_ONCE regression
2006-10-06 08:53:39 -07:00
cputime.h
[CPUFREQ] Remove slowdown from ondemand sampling path.
2006-06-30 01:29:47 -04:00
div64.h
dma-mapping-broken.h
dma-mapping.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
emergency-restart.h
errno-base.h
errno.h
fcntl.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
futex.h
[PATCH] lightweight robust futexes updates
2006-03-27 08:44:49 -08:00
ide_iops.h
ioctl.h
iomap.h
ipc.h
irq_regs.h
IRQ: Maintain regs pointer globally rather than passing to IRQ handlers
2006-10-05 15:10:12 +01:00
Kbuild
[HEADERS] One line per header in Kbuild files to reduce conflicts
2006-09-19 12:43:58 +01:00
Kbuild.asm
[HEADERS] One line per header in Kbuild files to reduce conflicts
2006-09-19 12:43:58 +01:00
libata-portmap.h
[PATCH] libata: rework legacy handling to remove much of the cruft
2006-08-10 16:59:10 +09:00
local.h
Don't include linux/config.h from anywhere else in include/
2006-04-26 12:56:16 +01:00
memory_model.h
[PATCH] squash duplicate page_to_pfn and pfn_to_page
2006-06-23 07:42:47 -07:00
mman.h
mutex-dec.h
fix file specification in comments
2006-10-03 23:01:26 +02:00
mutex-null.h
fix file specification in comments
2006-10-03 23:01:26 +02:00
mutex-xchg.h
fix file specification in comments
2006-10-03 23:01:26 +02:00
page.h
pci-dma-compat.h
pci.h
percpu.h
[PATCH] trigger a syntax error if percpu macros are incorrectly used
2006-09-26 08:48:44 -07:00
pgtable-nopmd.h
[PATCH] Standardize pxx_page macros
2006-09-26 08:48:51 -07:00
pgtable-nopud.h
[PATCH] Standardize pxx_page macros
2006-09-26 08:48:51 -07:00
pgtable.h
[PATCH] paravirt: remove set pte atomic
2006-10-01 00:39:34 -07:00
resource.h
rtc.h
fix file specification in comments
2006-10-03 23:01:26 +02:00
sections.h
[PATCH] add __[start|end]_rodata sections to asm-generic/sections.h
2006-07-01 09:56:03 -07:00
siginfo.h
signal.h
Add standard include guard to asm-generic/signal and use compiler.h
2006-04-27 06:57:23 +01:00
statfs.h
termios.h
tlb.h
fix file specification in comments
2006-10-03 23:01:26 +02:00
topology.h
uaccess.h
unaligned.h
vmlinux.lds.h
[PATCH] Include __param section in read-only data range
2006-09-27 08:26:19 -07:00
xor.h