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powerpc: Implement smp_cond_load_relaxed()
authorNicholas Piggin <npiggin@gmail.com>
Fri, 24 Jul 2020 13:14:23 +0000 (23:14 +1000)
committerMichael Ellerman <mpe@ellerman.id.au>
Sun, 26 Jul 2020 14:01:29 +0000 (00:01 +1000)
commit49a7d46a06c30c7beabbf9d1a8ea1de0f9e4fdfe
treed5249ad0043cb1dd0f1faa889c850e7b958c7cf2tree
parent2f6560e652dfdbdb59df28b45a3458bf36d3c580commit | diff
powerpc: Implement smp_cond_load_relaxed()

This implements smp_cond_load_relaxed() with the slowpath busy loop
using the preferred SMT priority pattern.

Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Waiman Long <longman@redhat.com>
[mpe: Make it 64-bit only to fix build errors on 32-bit]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200724131423.1362108-7-npiggin@gmail.com
arch/powerpc/include/asm/barrier.h diff | blob | history
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