path: root/lib/smp_processor_id.c
diff options
authorRusty Russell <>2009-01-10 21:58:09 -0800
committerIngo Molnar <>2009-01-30 15:47:34 +0100
commit4ab0a9409af5fad74ad1fc9e46d5a8b460f353e9 (patch)
treed6c5bba1ffb35c5655a736d6d736d086ed3316eb /lib/smp_processor_id.c
parent3a9f84d354ce1e19956083c8e691727dea33bd5a (diff)
cpumask: convert lib/smp_processor_id to new cpumask ops
Impact: fix debug_smp_processor_id() for CONFIG_CPUMASK_OFFSTACK=y The scheduler now uses the new cpumask API, which deals up to nr_cpumask_bits, whereas the API used NR_CPUS bits. If CONFIG_CPUMASK_OFFSTACK=y these two are not equal, so the top bits are undefined. Leading to bug 12518 "BUG: using smp_processor_id() in preemptible [00000000] code: dellWirelessCtl/..." The fix is simple: use the modern API in the check. Signed-off-by: Rusty Russell <> Signed-off-by: Mike Travis <> Signed-off-by: Ingo Molnar <>
Diffstat (limited to 'lib/smp_processor_id.c')
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/smp_processor_id.c b/lib/smp_processor_id.c
index 0f8fc22ed103..4689cb073da4 100644
--- a/lib/smp_processor_id.c
+++ b/lib/smp_processor_id.c
@@ -22,7 +22,7 @@ notrace unsigned int debug_smp_processor_id(void)
* Kernel threads bound to a single CPU can safely use
* smp_processor_id():
- if (cpus_equal(current->cpus_allowed, cpumask_of_cpu(this_cpu)))
+ if (cpumask_equal(&current->cpus_allowed, cpumask_of(this_cpu)))
goto out;