Messages in this thread Patch in this message | | | From | Rusty Russell <> | Date | Fri, 21 Nov 2008 21:09:01 +1030 | Subject | [PATCH 1/3] percpu: fix percpu accessors to potentially !cpu_possible() cpus: m32r |
| |
Impact: CPU iterator bugfixes
Percpu areas are only allocated for possible cpus. In general, you shouldn't access random cpu's percpu areas.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Mike Travis <travis@sgi.com> Acked-by: Ingo Molnar <mingo@elte.hu> --- arch/m32r/kernel/smpboot.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- test-compile.orig/arch/m32r/kernel/smpboot.c +++ test-compile/arch/m32r/kernel/smpboot.c @@ -598,7 +598,7 @@ int setup_profiling_timer(unsigned int m * accounting. At that time they also adjust their APIC timers * accordingly. */ - for (i = 0; i < NR_CPUS; ++i) + for_each_possible_cpu(i) per_cpu(prof_multiplier, i) = multiplier; return 0;
| |