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powerpc: Introduce msgsnd/doorbell barrier primitives
authorNicholas Piggin <npiggin@gmail.com>
Thu, 13 Apr 2017 10:16:22 +0000 (20:16 +1000)
committerMichael Ellerman <mpe@ellerman.id.au>
Thu, 13 Apr 2017 13:34:33 +0000 (23:34 +1000)
commit23281e1e748497a50622169465d13a4f7a79d9a7
tree2163874a33e22901d42faeceba3b99e1d25eab05tree | snapshot
parent11804ebf14e21df431399ce62b7b6ff979bc2a7dcommit | diff
powerpc: Introduce msgsnd/doorbell barrier primitives

POWER9 changes requirements and adds new instructions for
synchronization.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
arch/powerpc/include/asm/dbell.h diff | blob | history
arch/powerpc/include/asm/smp.h diff | blob | history
arch/powerpc/kernel/dbell.c diff | blob | history
arch/powerpc/kernel/smp.c diff | blob | history
Linux Kernel Source Tree.