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| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2008-12-25 13:37:57 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2008-12-25 13:38:07 +0100 |
| commit | 5439050f9f1aa92381ab9beccbea6ddf0c687c2b (patch) | |
| tree | ff60baccf42c58a4268463ad841f806e4048ae26 /arch/s390/kernel/topology.c | |
| parent | 4a6908a3a050aacc9c3a2f36b276b46c0629ad91 (diff) | |
| download | op-kernel-dev-5439050f9f1aa92381ab9beccbea6ddf0c687c2b.zip op-kernel-dev-5439050f9f1aa92381ab9beccbea6ddf0c687c2b.tar.gz | |
[S390] cpu topology: fix cpu_core_map initialization
Common code doesn't call arch_update_cpu_topology() anymore on
cpu hotplug. But our architecture backend relied on that in order to
update the cpu_core_map. For machines without cpu topology support
this leads uninitialized cpu_core_maps for later on added cpus.
To solve this just initialize the maps with cpu_possible_map, since
that will be always valid for machines without topology support.
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/topology.c')
| -rw-r--r-- | arch/s390/kernel/topology.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c index a947899..586c5e3 100644 --- a/arch/s390/kernel/topology.c +++ b/arch/s390/kernel/topology.c @@ -78,7 +78,7 @@ cpumask_t cpu_coregroup_map(unsigned int cpu) cpus_clear(mask); if (!machine_has_topology) - return cpu_present_map; + return cpu_possible_map; spin_lock_irqsave(&topology_lock, flags); while (core) { if (cpu_isset(cpu, core->mask)) { @@ -168,7 +168,7 @@ static void topology_update_polarization_simple(void) int cpu; mutex_lock(&smp_cpu_state_mutex); - for_each_present_cpu(cpu) + for_each_possible_cpu(cpu) smp_cpu_polarization[cpu] = POLARIZATION_HRZ; mutex_unlock(&smp_cpu_state_mutex); } @@ -199,7 +199,7 @@ int topology_set_cpu_management(int fc) rc = ptf(PTF_HORIZONTAL); if (rc) return -EBUSY; - for_each_present_cpu(cpu) + for_each_possible_cpu(cpu) smp_cpu_polarization[cpu] = POLARIZATION_UNKNWN; return rc; } @@ -208,7 +208,7 @@ static void update_cpu_core_map(void) { int cpu; - for_each_present_cpu(cpu) + for_each_possible_cpu(cpu) cpu_core_map[cpu] = cpu_coregroup_map(cpu); } |
