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authorFernando Luis Vazquez Cao <fernando@oss.ntt.co.jp>2007-05-09 05:33:25 -0400
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-05-09 15:30:48 -0400
commit2f4dfe206a2fc07099dfad77a8ea2f4b4ae2140f (patch)
treeb66a624ba68766282fa0ddb509ff641552703da4 /include/asm-um
parentdd2a345f8f002845636dbf5d2d768bb5cd8a5f59 (diff)
Remove hardcoding of hard_smp_processor_id on UP systems
With the advent of kdump, the assumption that the boot CPU when booting an UP kernel is always the CPU with a particular hardware ID (often 0) (usually referred to as BSP on some architectures) is not valid anymore. The reason being that the dump capture kernel boots on the crashed CPU (the CPU that invoked crash_kexec), which may be or may not be that particular CPU. Move definition of hard_smp_processor_id for the UP case to architecture-specific code ("asm/smp.h") where it belongs, so that each architecture can provide its own implementation. Signed-off-by: Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp> Cc: "Luck, Tony" <tony.luck@intel.com> Acked-by: Andi Kleen <ak@suse.de> Cc: "Eric W. Biederman" <ebiederm@xmission.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-um')
-rw-r--r--include/asm-um/smp.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/asm-um/smp.h b/include/asm-um/smp.h
index ca552261ed1f..84f8cf29324e 100644
--- a/include/asm-um/smp.h
+++ b/include/asm-um/smp.h
@@ -24,6 +24,10 @@ extern inline void smp_cpus_done(unsigned int maxcpus)
24 24
25extern struct task_struct *idle_threads[NR_CPUS]; 25extern struct task_struct *idle_threads[NR_CPUS];
26 26
27#else
28
29#define hard_smp_processor_id() 0
30
27#endif 31#endif
28 32
29#endif 33#endif