diff options
| author | Philipp Hachtmann <phacht@linux.vnet.ibm.com> | 2014-04-07 18:25:23 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-05-20 08:58:42 +0200 |
| commit | 6c8cd5bbda7e6be166cf2e2dd4be5890193e17ac (patch) | |
| tree | 0245d1a206b04c2cd2b5b4914dfb696205673861 /arch/s390/kernel/setup.c | |
| parent | s390/spinlock: cleanup spinlock code (diff) | |
| download | linux-6c8cd5bbda7e6be166cf2e2dd4be5890193e17ac.tar.xz linux-6c8cd5bbda7e6be166cf2e2dd4be5890193e17ac.zip | |
s390/spinlock: optimize spinlock code sequence
Use lowcore constant to improve the code generated for spinlocks.
[ Martin Schwidefsky: patch breakdown and code beautification ]
Signed-off-by: Philipp Hachtmann <phacht@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/setup.c')
| -rw-r--r-- | arch/s390/kernel/setup.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 1f5536c2fd02..7c5b05fa2194 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -373,6 +373,10 @@ static void __init setup_lowcore(void) mem_assign_absolute(S390_lowcore.restart_source, lc->restart_source); mem_assign_absolute(S390_lowcore.restart_psw, lc->restart_psw); +#ifdef CONFIG_SMP + lc->spinlock_lockval = arch_spin_lockval(0); +#endif + set_prefix((u32)(unsigned long) lc); lowcore_ptr[0] = lc; } |