diff options
| author | Will Deacon <[email protected]> | 2017-07-10 15:50:49 -0700 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2017-07-10 16:32:34 -0700 |
| commit | b6d0f14abb7c1d9d522c064633c820aaeb9bbfbf (patch) | |
| tree | 8d93ae60d5fced2dfcb0215fde88ff1abefbfd85 | |
| parent | 31b7fb448c2bda757f3386c3eb50c2718bf6d776 (diff) | |
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/[email protected]
Signed-off-by: Will Deacon <[email protected]>
Reported-by: kbuild test robot <[email protected]>
Cc: Joerg Roedel <[email protected]>
Cc: Robin Murphy <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Ingo Molnar <[email protected]>
Cc: David Howells <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
| -rw-r--r-- | arch/frv/include/asm/cmpxchg.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/frv/include/asm/cmpxchg.h b/arch/frv/include/asm/cmpxchg.h index a899765102ea..ad1f11cfa92a 100644 --- a/arch/frv/include/asm/cmpxchg.h +++ b/arch/frv/include/asm/cmpxchg.h @@ -76,6 +76,7 @@ extern uint32_t __xchg_32(uint32_t i, volatile void *v); * - 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 |