From: Will Deacon <will.deacon@xxxxxxx> Subject: frv: cmpxchg: implement cmpxchg64() FRV supports 64-bit cmpxchg, which is provided by the arch code as __cmpxchg_64 and subsequently used to implement atomic64_cmpxchg. This patch hooks up the generic cmpxchg64 API using the same function, which also provides default definitions of the relaxed, acquire and release variants. This fixes the build when COMPILE_TEST=y and IOMMU_IO_PGTABLE_LPAE=y. Link: http://lkml.kernel.org/r/1499084670-6996-1-git-send-email-will.deacon@xxxxxxx Signed-off-by: Will Deacon <will.deacon@xxxxxxx> Reported-by: kbuild test robot <fengguang.wu@xxxxxxxxx> Cc: Joerg Roedel <joro@xxxxxxxxxx> Cc: Robin Murphy <robin.murphy@xxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Ingo Molnar <mingo@xxxxxxxxxx> Cc: David Howells <dhowells@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- arch/frv/include/asm/cmpxchg.h | 1 + 1 file changed, 1 insertion(+) diff -puN arch/frv/include/asm/cmpxchg.h~frv-cmpxchg-implement-cmpxchg64 arch/frv/include/asm/cmpxchg.h --- a/arch/frv/include/asm/cmpxchg.h~frv-cmpxchg-implement-cmpxchg64 +++ a/arch/frv/include/asm/cmpxchg.h @@ -76,6 +76,7 @@ extern uint32_t __xchg_32(uint32_t i, vo * - if (*ptr != test) then orig = *ptr; */ extern uint64_t __cmpxchg_64(uint64_t test, uint64_t new, volatile uint64_t *v); +#define cmpxchg64(p, o, n) __cmpxchg_64((o), (n), (p)) #ifndef CONFIG_FRV_OUTOFLINE_ATOMIC_OPS _ -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
