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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2010-01-13 20:44:34 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2010-01-13 20:44:45 +0100 |
| commit | 02beaccc901b7a28ac1de79f3ed122f5fda220b1 (patch) | |
| tree | 77c36cd14b9ce1324ff6127a4bdb19e312fef7e2 /arch/s390/kernel/smp.c | |
| parent | [S390] use helpers for rlimits (diff) | |
| download | linux-02beaccc901b7a28ac1de79f3ed122f5fda220b1.tar.xz linux-02beaccc901b7a28ac1de79f3ed122f5fda220b1.zip | |
[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.c | 6 |
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) { } +void __init smp_setup_processor_id(void) +{ + S390_lowcore.cpu_nr = 0; + __cpu_logical_map[0] = stap(); +} + /* * the frequency of the profiling timer can be changed * by writing a multiplier value into /proc/profile. |