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authorHeiko Carstens <heiko.carstens@de.ibm.com>2019-10-18 13:23:16 +0200
committerVasily Gorbik <gor@linux.ibm.com>2019-10-31 17:20:51 +0100
commitcceb018377a123dd77d3239bbdbfbdf50f0d6a71 (patch)
treed3d2e8b4e82124d4f0107fe36685250169898025 /arch/s390/lib
parent6a3035dac6506bc6da40e391803fba50bb2dce9d (diff)
downloadlinux-cceb018377a123dd77d3239bbdbfbdf50f0d6a71.tar.bz2
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.c4
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)