aboutsummaryrefslogtreecommitdiffstats
path: root/arch/s390/kernel/smp.c
diff options
context:
space:
mode:
authorHeiko Carstens <heiko.carstens@de.ibm.com>2010-01-13 14:44:34 -0500
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2010-01-13 14:44:45 -0500
commit02beaccc901b7a28ac1de79f3ed122f5fda220b1 (patch)
tree77c36cd14b9ce1324ff6127a4bdb19e312fef7e2 /arch/s390/kernel/smp.c
parenta58c26bba9ebe97fea99aee125728b1f3886499e (diff)
[S390] smp: setup smp_processor_id early
smp_processor_id() is supposed to work before setup_arch() gets called. Before that smp_processor_id() may return just an arbitrary value that is contained in the uninitialized boot lowcore. So provide the arch function which will override the weak function in init/main.c. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/smp.c')
-rw-r--r--arch/s390/kernel/smp.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c
index 93e52039321b..eebce7fdc97c 100644
--- a/arch/s390/kernel/smp.c
+++ b/arch/s390/kernel/smp.c
@@ -717,6 +717,12 @@ void __init smp_cpus_done(unsigned int max_cpus)
717{ 717{
718} 718}
719 719
720void __init smp_setup_processor_id(void)
721{
722 S390_lowcore.cpu_nr = 0;
723 __cpu_logical_map[0] = stap();
724}
725
720/* 726/*
721 * the frequency of the profiling timer can be changed 727 * the frequency of the profiling timer can be changed
722 * by writing a multiplier value into /proc/profile. 728 * by writing a multiplier value into /proc/profile.