diff options
| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2019-10-18 14:23:16 +0300 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2019-10-31 19:20:51 +0300 |
| commit | cceb018377a123dd77d3239bbdbfbdf50f0d6a71 (patch) | |
| tree | d3d2e8b4e82124d4f0107fe36685250169898025 /arch/s390/include/asm/spinlock.h | |
| parent | 6a3035dac6506bc6da40e391803fba50bb2dce9d (diff) | |
| download | linux-cceb018377a123dd77d3239bbdbfbdf50f0d6a71.tar.xz | |
s390/alternatives: make use of asm_inline
This is the s390 version of commit 40576e5e63ea ("x86: alternative.h:
use asm_inline for all alternative variants").
See commit eb111869301e ("compiler-types.h: add asm_inline
definition") for more details.
With this change the compiler will not generate many out-of-line
versions for the three instruction sized arch_spin_unlock() function
anymore. Due to this gcc seems to change a lot of other inline
decisions which results in a net 6k text size growth according to
bloat-o-meter (gcc 9.2 with defconfig).
But that's still better than having many out-of-line versions of
arch_spin_unlock().
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/include/asm/spinlock.h')
| -rw-r--r-- | arch/s390/include/asm/spinlock.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/s390/include/asm/spinlock.h b/arch/s390/include/asm/spinlock.h index c02bff33f6c7..3a37172d5398 100644 --- a/arch/s390/include/asm/spinlock.h +++ b/arch/s390/include/asm/spinlock.h @@ -85,7 +85,7 @@ static inline int arch_spin_trylock(arch_spinlock_t *lp) static inline void arch_spin_unlock(arch_spinlock_t *lp) { typecheck(int, lp->lock); - asm volatile( + asm_inline volatile( ALTERNATIVE("", ".long 0xb2fa0070", 49) /* NIAI 7 */ " sth %1,%0\n" : "=Q" (((unsigned short *) &lp->lock)[1]) |