Commit acd89579 authored Feb 09, 2009 by Hugh Dickins Committed by Ingo Molnar Feb 10, 2009

profiling: fix broken profiling regression



Impact: fix broken /proc/profile on UP machines

Commit c309b917 "cpumask: convert
kernel/profile.c" broke profiling.  prof_cpu_mask was previously
initialized to CPU_MASK_ALL, but left uninitialized in that commit.
We need to copy cpu_possible_mask (cpu_online_mask is not enough).

Signed-off-by: Hugh Dickins <hugh@veritas.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent 4c098bcd

kernel/profile.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -114,12 +114,15 @@ int __ref profile_init(void)
		if (!slab_is_available()) {
		prof_buffer = alloc_bootmem(buffer_bytes);
		alloc_bootmem_cpumask_var(&prof_cpu_mask);
		cpumask_copy(prof_cpu_mask, cpu_possible_mask);
		return 0;
		}

		if (!alloc_cpumask_var(&prof_cpu_mask, GFP_KERNEL))
		return -ENOMEM;

		cpumask_copy(prof_cpu_mask, cpu_possible_mask);

		prof_buffer = kzalloc(buffer_bytes, GFP_KERNEL);
		if (prof_buffer)
		return 0;