kernel_samsung_sm7125

jenna

History

Linus Torvalds a08727bae7 Make workqueue bit operations work on "atomic_long_t" On architectures where the atomicity of the bit operations is handled by external means (ie a separate spinlock to protect concurrent accesses), just doing a direct assignment on the workqueue data field (as done by commit `4594bf159f`) can cause the assignment to be lost due to lack of serialization with the bitops on the same word. So we need to serialize the assignment with the locks on those architectures (notably older ARM chips, PA-RISC and sparc32). So rather than using an "unsigned long", let's use "atomic_long_t", which already has a safe assignment operation (atomic_long_set()) on such architectures. This requires that the atomic operations use the same atomicity locks as the bit operations do, but that is largely the case anyway. Sparc32 will probably need fixing. Architectures (including modern ARM with LL/SC) that implement sane atomic operations for SMP won't see any of this matter. Cc: Russell King <rmk+lkml@arm.linux.org.uk> Cc: David Howells <dhowells@redhat.com> Cc: David Miller <davem@davemloft.com> Cc: Matthew Wilcox <matthew@wil.cx> Cc: Linux Arch Maintainers <linux-arch@vger.kernel.org> Cc: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>		18 years ago
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acpi	[PATCH] slab: remove kmem_cache_t	18 years ago
asm-alpha	[PATCH] Optimize D-cache alias handling on fork	18 years ago
asm-arm	Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm	18 years ago
asm-arm26	[PATCH] Optimize D-cache alias handling on fork	18 years ago
asm-avr32	[PATCH] Optimize D-cache alias handling on fork	18 years ago
asm-cris	[PATCH] Optimize D-cache alias handling on fork	18 years ago
asm-frv	[PATCH] Optimize D-cache alias handling on fork	18 years ago
asm-generic	Remove stack unwinder for now	18 years ago
asm-h8300	[PATCH] Optimize D-cache alias handling on fork	18 years ago
asm-i386	Remove stack unwinder for now	18 years ago
asm-ia64	Merge branch 'release' of master.kernel.org:/home/ftp/pub/scm/linux/kernel/git/aegl/linux-2.6	18 years ago
asm-m32r	[PATCH] Optimize D-cache alias handling on fork	18 years ago
asm-m68k	[PATCH] Optimize D-cache alias handling on fork	18 years ago
asm-m68knommu	[PATCH] Optimize D-cache alias handling on fork	18 years ago
asm-mips	[PATCH] Optimize D-cache alias handling on fork	18 years ago
asm-parisc	[PATCH] Optimize D-cache alias handling on fork	18 years ago
asm-powerpc	[PATCH] Optimize D-cache alias handling on fork	18 years ago
asm-ppc	Merge branch 'for_paulus' of master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc	18 years ago
asm-s390	[S390] Fix reboot hang on LPARs	18 years ago
asm-sh	[PATCH] Optimize D-cache alias handling on fork	18 years ago
asm-sh64	[PATCH] Optimize D-cache alias handling on fork	18 years ago
asm-sparc	[PATCH] Optimize D-cache alias handling on fork	18 years ago
asm-sparc64	[PATCH] Optimize D-cache alias handling on fork	18 years ago
asm-um	[PATCH] UML: add generic BUG support	18 years ago
asm-v850	[PATCH] Optimize D-cache alias handling on fork	18 years ago
asm-x86_64	Remove stack unwinder for now	18 years ago
asm-xtensa	[PATCH] Optimize D-cache alias handling on fork	18 years ago
crypto	[CRYPTO] lib: table driven multiplications in GF(2^128)	18 years ago
keys	…
linux	Make workqueue bit operations work on "atomic_long_t"	18 years ago
math-emu	…
media	V4L/DVB (4935): Added the capability of selecting fm gain by tuner	18 years ago
mtd	…
net	[IPV6]: Make fib6_node subtree depend on IPV6_SUBTREES	18 years ago
pcmcia	[PATCH] pcmcia: multifunction card handling fixes	18 years ago
rdma	[PATCH] ib_verbs: Use explicit if-else statements to avoid errors with do-while macros	18 years ago
rxrpc	…
scsi	[PATCH] slab: remove kmem_cache_t	18 years ago
sound	Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6	18 years ago
video	[PATCH] sstfb: add sysfs interface	18 years ago
Kbuild	…