Rusty Russell 30e1e6d1af cpumask: fix CONFIG_CPUMASK_OFFSTACK=y cpu hotunplug crash ... Impact: Fix cpu offline when CONFIG_MAXSMP=y Changeset bc9b83dd1f "cpumask: convert c1e_mask in arch/x86/kernel/process.c to cpumask_var_t" contained a bug: c1e_mask is manipulated even if C1E isn't detected (and hence not allocated). This is simply fixed by checking for NULL (which gcc optimizes out anyway of CONFIG_CPUMASK_OFFSTACK=n, since it knows ce1_mask can never be NULL). In addition, fix a leak where select_idle_routine re-allocates (and re-clears) c1e_mask on every cpu init. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Cc: Mike Travis <travis@sgi.com> LKML-Reference: <200903171450.34549.rusty@rustcorp.com.au> Signed-off-by: Ingo Molnar <mingo@elte.hu>		2009-03-18 09:40:35 +01:00
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asm	cpumask: fix CONFIG_CPUMASK_OFFSTACK=y cpu hotunplug crash	2009-03-18 09:40:35 +01:00