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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2019-10-18 13:23:16 +0200 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2019-10-31 17:20:51 +0100 |
| commit | cceb018377a123dd77d3239bbdbfbdf50f0d6a71 (patch) | |
| tree | d3d2e8b4e82124d4f0107fe36685250169898025 /arch/s390/lib | |
| parent | 6a3035dac6506bc6da40e391803fba50bb2dce9d (diff) | |
| download | blackbird-op-linux-cceb018377a123dd77d3239bbdbfbdf50f0d6a71.tar.gz blackbird-op-linux-cceb018377a123dd77d3239bbdbfbdf50f0d6a71.zip | |
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/lib')
| -rw-r--r-- | arch/s390/lib/spinlock.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/lib/spinlock.c b/arch/s390/lib/spinlock.c index 30a7c8c29964..ce1e4bbe53aa 100644 --- a/arch/s390/lib/spinlock.c +++ b/arch/s390/lib/spinlock.c @@ -74,7 +74,7 @@ static inline int arch_load_niai4(int *lock) { int owner; - asm volatile( + asm_inline volatile( ALTERNATIVE("", ".long 0xb2fa0040", 49) /* NIAI 4 */ " l %0,%1\n" : "=d" (owner) : "Q" (*lock) : "memory"); @@ -85,7 +85,7 @@ static inline int arch_cmpxchg_niai8(int *lock, int old, int new) { int expected = old; - asm volatile( + asm_inline volatile( ALTERNATIVE("", ".long 0xb2fa0080", 49) /* NIAI 8 */ " cs %0,%3,%1\n" : "=d" (old), "=Q" (*lock) |
