Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Marek Vasut d975440bf8 asm-generic: cmpxchg: avoid warnings from macro-ized cmpxchg() implementations ... This change is similar to e001bbae71 ARM: cmpxchg: avoid warnings from macro-ized cmpxchg() implementations A recent change in kernel/acct.c added a new warning for many configurations using generic __xchg() implementation: In file included from ./arch/nios2/include/asm/cmpxchg.h:12:0, from include/asm-generic/atomic.h:18, from arch/nios2/include/generated/asm/atomic.h:1, from include/linux/atomic.h:4, from include/linux/spinlock.h:406, from include/linux/mmzone.h:7, from include/linux/gfp.h:5, from include/linux/mm.h:9, from kernel/acct.c:46: kernel/acct.c: In function 'acct_pin_kill': include/asm-generic/cmpxchg.h:94:3: warning: value computed is not used [-Wunused-value] ((__typeof__(*(ptr)))__cmpxchg_local_generic((ptr), (unsigned long)(o),\ ^ include/asm-generic/cmpxchg.h:102:28: note: in expansion of macro 'cmpxchg_local' #define cmpxchg(ptr, o, n) cmpxchg_local((ptr), (o), (n)) ^ kernel/acct.c:177:2: note: in expansion of macro 'cmpxchg' cmpxchg(&acct->ns->bacct, pin, NULL); ^ The code is in fact correct, it's just a cmpxchg() call that intentionally ignores the result, and no other code does that. The warning does not show up on x86 because of the way that its cmpxchg() macro is written. This changes the asm-ggeneric implementation to use a similar construct with a compound expression instead of a typecast, which causes the compiler to not complain about an unused result. Fix the other macros in this file in a similar way, and place them just below their function implementations. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: Arnd Bergmann <arnd@arndb.de>		2015-10-15 00:21:13 +02:00
..
bitops	move count_zeroes.h out of asm-generic	2015-10-15 00:21:07 +02:00
4level-fixup.h	mm, asm-generic: define PUD_SHIFT in <asm-generic/4level-fixup.h>	2015-02-11 17:06:03 -08:00
asm-offsets.h	asm-generic: Add common asm-offsets.h	2015-06-23 13:35:49 +09:00
atomic-long.h	locking, asm-generic: Add _{relaxed|acquire|release}() variants for 'atomic_long_t'	2015-08-12 11:59:01 +02:00
atomic.h	atomic: Collapse all atomic_{set,clear}_mask definitions	2015-07-27 14:06:24 +02:00
atomic64.h	atomic: Provide atomic_{or,xor,and}	2015-07-27 14:06:24 +02:00
audit_change_attr.h	audit: Modify a set of system calls in audit class definitions	2014-01-17 17:01:46 -05:00
audit_dir_write.h
audit_read.h
audit_signal.h
audit_write.h	audit: Modify a set of system calls in audit class definitions	2014-01-17 17:01:46 -05:00
barrier.h	locking, arch: use WRITE_ONCE()/READ_ONCE() in smp_store_release()/smp_load_acquire()	2015-08-03 10:59:30 +02:00
bitops.h	arch: Prepare for smp_mb__{before,after}_atomic()	2014-04-18 11:40:30 +02:00
bitsperlong.h
bug.h	bug: Make BUG() always stop the machine	2014-04-07 16:36:10 -07:00
bugs.h
cache.h
cacheflush.h
checksum.h
clkdev.h	asm-generic: COMMON_CLK defines __clk_{get,put}	2014-09-25 18:00:45 -07:00
cmpxchg-local.h	LLVMLinux: Remove warning about returning an uninitialized variable	2014-04-09 13:44:35 -07:00
cmpxchg.h	asm-generic: cmpxchg: avoid warnings from macro-ized cmpxchg() implementations	2015-10-15 00:21:13 +02:00
cputime.h
cputime_jiffies.h	sched, time: Fix build error with 64 bit cputime_t on 32 bit systems	2014-10-03 05:46:55 +02:00
cputime_nsecs.h	sched, time: Fix build error with 64 bit cputime_t on 32 bit systems	2014-10-03 05:46:55 +02:00
current.h
delay.h
device.h
div64.h
dma-coherent.h	DMA-API: Change dma_declare_coherent_memory() CPU address to phys_addr_t	2014-05-20 16:55:23 -06:00
dma-contiguous.h	asm-generic: Add dma-contiguous.h	2014-09-22 13:35:51 +02:00
dma-mapping-broken.h
dma-mapping-common.h	dma-mapping: consolidate dma_set_mask	2015-09-10 13:29:01 -07:00
dma.h
early_ioremap.h	Merge branch 'akpm' (patches from Andrew)	2015-09-08 17:52:23 -07:00
emergency-restart.h
exec.h
fb.h
fixmap.h	mm: provide early_memremap_ro to establish read-only mapping	2015-08-20 12:24:22 +01:00
ftrace.h
futex.h	sched/preempt, futex: Disable preemption in UP futex_atomic_cmpxchg_inatomic() explicitly	2015-05-19 08:39:16 +02:00
getorder.h
gpio.h	gpio: remove gpiod_sysfs_set_active_low	2015-05-12 10:46:53 +02:00
hardirq.h
hugetlb.h	mm: Fix generic hugetlb pte check return type.	2013-10-02 20:02:35 -04:00
hw_irq.h
ide_iops.h
int-ll64.h
io.h	x86/mm, asm-generic: Add IOMMU ioremap_uc() variant default	2015-07-21 10:47:03 +02:00
ioctl.h	include/asm-generic/ioctl.h: fix _IOC_TYPECHECK sparse error	2014-06-06 16:08:13 -07:00
iomap.h	x86/mm, asm-generic: Add ioremap_wt() for creating Write-Through mappings	2015-06-07 15:28:56 +02:00
irq.h
irq_regs.h
irq_work.h	irq_work: Introduce arch_irq_work_has_interrupt()	2014-09-13 18:38:07 +02:00
irqflags.h
Kbuild.asm
kdebug.h
kmap_types.h
kvm_para.h
libata-portmap.h
linkage.h
local.h
local64.h
mcs_spinlock.h	locking/mcs: Allow architecture specific asm files to be used for contended case	2014-02-09 21:18:52 +01:00
memory_model.h	mm: fix type cast in __pfn_to_phys()	2015-09-19 03:58:10 -04:00
mm-arch-hooks.h	mm: clean up per architecture MM hook header files	2015-07-17 16:39:53 -07:00
mm_hooks.h	mm: Make arch_unmap()/bprm_mm_init() available to all architectures	2014-11-19 11:54:13 +01:00
mmu.h
mmu_context.h	asm-generic: Remove asm-generic arch_bprm_mm_init()	2014-11-22 21:52:08 +01:00
module.h
msi.h	asm-generic: Add msi.h	2014-11-23 13:01:47 +01:00
mutex-dec.h	arch: Make __mutex_fastpath_lock_retval return whether fastpath succeeded or not	2013-06-26 12:10:55 +02:00
mutex-null.h	arch: Make __mutex_fastpath_lock_retval return whether fastpath succeeded or not	2013-06-26 12:10:55 +02:00
mutex-xchg.h	arch: Make __mutex_fastpath_lock_retval return whether fastpath succeeded or not	2013-06-26 12:10:55 +02:00
mutex.h
page.h
param.h
parport.h
pci-bridge.h
pci-dma-compat.h	pci-dma-compat: add pci_zalloc_consistent helper	2014-08-08 15:57:28 -07:00
pci.h	PCI: Remove unused pcibios_select_root() (again)	2015-06-08 07:56:21 -05:00
pci_iomap.h	PCI: Add pci_iomap_wc() variants	2015-08-25 09:59:45 +02:00
percpu.h	percpu: preffity percpu header files	2014-06-17 19:12:40 -04:00
pgalloc.h
pgtable-nopmd.h
pgtable-nopud.h
pgtable.h	mm: clarify that the function operates on hugepage pte	2015-06-24 17:49:44 -07:00
preempt.h	sched/preempt: Fix cond_resched_lock() and cond_resched_softirq()	2015-08-03 12:21:24 +02:00
ptrace.h
qrwlock.h	locking/qrwlock: Make use of _{acquire|release|relaxed}() atomics	2015-08-12 11:59:06 +02:00
qrwlock_types.h	locking/rwlocks: Introduce 'qrwlocks' - fair, queued rwlocks	2014-06-06 07:58:28 +02:00
qspinlock.h	locking/qspinlock/x86: Fix performance regression under unaccelerated VMs	2015-09-11 07:49:42 +02:00
qspinlock_types.h	locking/qspinlock: Optimize for smaller NR_CPUS	2015-05-08 12:36:48 +02:00
resource.h	asm-generic: remove _STK_LIM_MAX	2014-05-15 00:32:09 +01:00
rtc.h	rtc: cmos: century support	2015-09-05 13:19:09 +02:00
rwsem.h	asm-generic: rwsem: de-PPCify rwsem.h	2014-03-14 18:02:08 +00:00
seccomp.h	seccomp: allow COMPAT sigreturn overrides	2015-04-17 09:04:09 -04:00
sections.h	nosave: consolidate __nosave_{begin,end} in <asm/sections.h>	2014-10-09 22:26:04 -04:00
segment.h
serial.h
siginfo.h	constify copy_siginfo_to_user{,32}()	2013-11-09 00:16:29 -05:00
signal.h
simd.h	crypto: create generic version of ablk_helper	2013-09-24 06:02:24 +10:00
sizes.h
spinlock.h
statfs.h
string.h
switch_to.h
syscall.h	syscall.h: fix doc text for syscall_get_arch()	2014-09-23 16:20:00 -04:00
syscalls.h
termios-base.h
termios.h
timex.h
tlb.h	mm: mmu_gather: use tlb->end != 0 only for TLB invalidation	2015-01-13 15:20:40 +13:00
tlbflush.h
topology.h
trace_clock.h
uaccess-unaligned.h
uaccess.h	asm-generic: uaccess: Spelling s/a ny/any/	2014-01-02 10:45:23 +01:00
unaligned.h	asm-generic: allow generic unaligned access if the arch supports it	2014-05-08 10:22:23 +02:00
unistd.h
user.h
vga.h
vmlinux.lds.h	kbuild: Fix .text.unlikely placement	2015-08-20 14:55:54 +02:00
vtime.h	include/asm-generic/vtime.h: avoid zero-length file	2013-09-30 14:31:02 -07:00
word-at-a-time.h	Make asm/word-at-a-time.h available on all architectures	2015-07-08 16:41:55 -04:00
xor.h