percpu: make PER_CPU_BASE_SECTION overridable by arches
Impact: bug fix IA-64 needs to put percpu data in the seperate section even on UP. Fixes regression caused by "percpu: refactor percpu.h" Signed-off-by: Brian Gerst <brgerst@gmail.com> Acked-by: Tony Luck <tony.luck@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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2 changed files with 9 additions and 3 deletions
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@ -27,12 +27,12 @@ extern void *per_cpu_init(void);
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#else /* ! SMP */
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#define PER_CPU_ATTRIBUTES __attribute__((__section__(".data.percpu")))
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#define per_cpu_init() (__phys_per_cpu_start)
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#endif /* SMP */
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#define PER_CPU_BASE_SECTION ".data.percpu"
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/*
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* Be extremely careful when taking the address of this variable! Due to virtual
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* remapping, it is different from the canonical address returned by __get_cpu_var(var)!
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@ -8,8 +8,15 @@
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#include <asm/percpu.h>
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#ifndef PER_CPU_BASE_SECTION
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#ifdef CONFIG_SMP
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#define PER_CPU_BASE_SECTION ".data.percpu"
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#else
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#define PER_CPU_BASE_SECTION ".data"
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#endif
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#endif
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#ifdef CONFIG_SMP
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#ifdef MODULE
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#define PER_CPU_SHARED_ALIGNED_SECTION ""
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@ -20,7 +27,6 @@
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#else
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#define PER_CPU_BASE_SECTION ".data"
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#define PER_CPU_SHARED_ALIGNED_SECTION ""
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#define PER_CPU_FIRST_SECTION ""
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