Andrea Parri cb13b424e9 locking/xchg/alpha: Add unconditional memory barrier to cmpxchg() ... Continuing along with the fight against smp_read_barrier_depends() [1] (or rather, against its improper use), add an unconditional barrier to cmpxchg. This guarantees that dependency ordering is preserved when a dependency is headed by an unsuccessful cmpxchg. As it turns out, the change could enable further simplification of LKMM as proposed in [2]. [1] https://marc.info/?l=linux-kernel&m=150884953419377&w=2 https://marc.info/?l=linux-kernel&m=150884946319353&w=2 https://marc.info/?l=linux-kernel&m=151215810824468&w=2 https://marc.info/?l=linux-kernel&m=151215816324484&w=2 [2] https://marc.info/?l=linux-kernel&m=151881978314872&w=2 Signed-off-by: Andrea Parri <parri.andrea@gmail.com> Acked-by: Peter Zijlstra <peterz@infradead.org> Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Matt Turner <mattst88@gmail.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will.deacon@arm.com> Cc: linux-alpha@vger.kernel.org Link: http://lkml.kernel.org/r/1519152356-4804-1-git-send-email-parri.andrea@gmail.com Signed-off-by: Ingo Molnar <mingo@kernel.org>		2018-02-21 10:12:29 +01:00
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alpha	locking/xchg/alpha: Add unconditional memory barrier to cmpxchg()	2018-02-21 10:12:29 +01:00
arc	The core framework has a handful of patches this time around, mostly due	2018-02-01 16:56:07 -08:00
arm	KVM changes for 4.16	2018-02-10 13:16:35 -08:00
arm64	arm64: cputype: Silence Sparse warnings	2018-02-17 08:37:05 +00:00
blackfin	unify {de,}mangle_poll(), get rid of kernel-side POLL...	2018-02-11 14:37:22 -08:00
c6x	The core framework has a handful of patches this time around, mostly due	2018-02-01 16:56:07 -08:00
cris	vfs: do bulk POLL* -> EPOLL* replacement	2018-02-11 14:34:03 -08:00
frv	unify {de,}mangle_poll(), get rid of kernel-side POLL...	2018-02-11 14:37:22 -08:00
h8300	The core framework has a handful of patches this time around, mostly due	2018-02-01 16:56:07 -08:00
hexagon	The core framework has a handful of patches this time around, mostly due	2018-02-01 16:56:07 -08:00
ia64	ia64: fix build failure with CONFIG_SWIOTLB	2018-02-12 15:59:05 +00:00
m32r	The core framework has a handful of patches this time around, mostly due	2018-02-01 16:56:07 -08:00
m68k	unify {de,}mangle_poll(), get rid of kernel-side POLL...	2018-02-11 14:37:22 -08:00
metag	The core framework has a handful of patches this time around, mostly due	2018-02-01 16:56:07 -08:00
microblaze	Microblaze patches for 4.16-rc1	2018-02-02 09:48:36 -08:00
mips	MIPS fixes for 4.16-rc2	2018-02-16 09:31:37 -08:00
mn10300	The core framework has a handful of patches this time around, mostly due	2018-02-01 16:56:07 -08:00
nios2	nios2 update for v4.16-rc1	2018-02-11 13:52:32 -08:00
openrisc	The core framework has a handful of patches this time around, mostly due	2018-02-01 16:56:07 -08:00
parisc	The core framework has a handful of patches this time around, mostly due	2018-02-01 16:56:07 -08:00
powerpc	powerpc/pseries: Check for zero filled ibm,dynamic-memory property	2018-02-16 21:34:14 +11:00
riscv	RISC-V changes for 4.16	2018-02-07 11:33:08 -08:00
s390	KVM changes for 4.16	2018-02-10 13:16:35 -08:00
score	arch/score/kernel/setup.c: combine two seq_printf() calls into one call in show_cpuinfo()	2018-02-06 18:32:47 -08:00
sh	libnvdimm for 4.16	2018-02-06 10:41:33 -08:00
sparc	sparc,leon: Select USB_UHCI_BIG_ENDIAN_{MMIO,DESC}	2018-02-15 21:45:16 +00:00
tile	The core framework has a handful of patches this time around, mostly due	2018-02-01 16:56:07 -08:00
um	mconsole_proc(): don't mess with file->f_pos	2018-02-09 19:28:01 -08:00
unicore32	lib: optimize cpumask_next_and()	2018-02-06 18:32:44 -08:00
x86	Merge branch 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip	2018-02-18 12:56:41 -08:00
xtensa	unify {de,}mangle_poll(), get rid of kernel-side POLL...	2018-02-11 14:37:22 -08:00
.gitignore
Kconfig	Makefile: introduce CONFIG_CC_STACKPROTECTOR_AUTO	2018-02-06 18:32:44 -08:00