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authorDave Jones <davej@redhat.com>2007-04-11 18:22:34 -0400
committerDave Jones <davej@redhat.com>2007-04-26 14:32:02 -0400
commite8e49190f64896afe79f7136a67c2bdefbd3e322 (patch)
treef4c9a03f68317dac9c11a7046729e029d143416a /arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
parentfb48e15645fb702cb2ec02c84f82ece2fbc1574d (diff)
Fix preemption warnings in speedstep-centrino.c
BUG: using smp_processor_id() in preemptible [00000001] code: kondemand/0/2473 caller is centrino_target+0xfb/0x600 [<401e3646>] debug_smp_processor_id+0x9e/0xb0 [<40112afb>] centrino_target+0xfb/0x600 [<40112a00>] centrino_target+0x0/0x600 [<40305bd9>] __cpufreq_driver_target+0x5c/0x6b [<f897a537>] do_dbs_timer+0x1bc/0x208 [cpufreq_ondemand] [<40134a46>] run_workqueue+0x85/0x125 [<40374f7f>] _spin_lock_irqsave+0x18/0x66 [<f897a37b>] do_dbs_timer+0x0/0x208 [cpufreq_ondemand] [<401353fb>] worker_thread+0xf9/0x124 [<401213b9>] default_wake_function+0x0/0xc [<40135302>] worker_thread+0x0/0x124 [<40137b37>] kthread+0xb0/0xd9 [<40137a87>] kthread+0x0/0xd9 [<40104b2f>] kernel_thread_helper+0x7/0x10 Signed-off-by: Dave Jones <davej@redhat.com>
Diffstat (limited to 'arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c')
-rw-r--r--arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c b/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
index f43b987f952b..35489fd68852 100644
--- a/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
+++ b/arch/i386/kernel/cpu/cpufreq/speedstep-centrino.c
@@ -720,6 +720,7 @@ static int centrino_target (struct cpufreq_policy *policy,
720 cpu_set(j, set_mask); 720 cpu_set(j, set_mask);
721 721
722 set_cpus_allowed(current, set_mask); 722 set_cpus_allowed(current, set_mask);
723 preempt_disable();
723 if (unlikely(!cpu_isset(smp_processor_id(), set_mask))) { 724 if (unlikely(!cpu_isset(smp_processor_id(), set_mask))) {
724 dprintk("couldn't limit to CPUs in this domain\n"); 725 dprintk("couldn't limit to CPUs in this domain\n");
725 retval = -EAGAIN; 726 retval = -EAGAIN;
@@ -727,6 +728,7 @@ static int centrino_target (struct cpufreq_policy *policy,
727 /* We haven't started the transition yet. */ 728 /* We haven't started the transition yet. */
728 goto migrate_end; 729 goto migrate_end;
729 } 730 }
731 preempt_enable();
730 break; 732 break;
731 } 733 }
732 734
@@ -761,10 +763,13 @@ static int centrino_target (struct cpufreq_policy *policy,
761 } 763 }
762 764
763 wrmsr(MSR_IA32_PERF_CTL, oldmsr, h); 765 wrmsr(MSR_IA32_PERF_CTL, oldmsr, h);
764 if (policy->shared_type == CPUFREQ_SHARED_TYPE_ANY) 766 if (policy->shared_type == CPUFREQ_SHARED_TYPE_ANY) {
767 preempt_enable();
765 break; 768 break;
769 }
766 770
767 cpu_set(j, covered_cpus); 771 cpu_set(j, covered_cpus);
772 preempt_enable();
768 } 773 }
769 774
770 for_each_cpu_mask(k, online_policy_cpus) { 775 for_each_cpu_mask(k, online_policy_cpus) {
@@ -796,8 +801,11 @@ static int centrino_target (struct cpufreq_policy *policy,
796 cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE); 801 cpufreq_notify_transition(&freqs, CPUFREQ_POSTCHANGE);
797 } 802 }
798 } 803 }
804 set_cpus_allowed(current, saved_mask);
805 return 0;
799 806
800migrate_end: 807migrate_end:
808 preempt_enable();
801 set_cpus_allowed(current, saved_mask); 809 set_cpus_allowed(current, saved_mask);
802 return 0; 810 return 0;
803} 811}