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| author | Fernando Luis Vazquez Cao <fernando@oss.ntt.co.jp> | 2007-05-09 02:33:25 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-09 12:30:48 -0700 |
| commit | 2f4dfe206a2fc07099dfad77a8ea2f4b4ae2140f (patch) | |
| tree | b66a624ba68766282fa0ddb509ff641552703da4 /include/asm-um | |
| parent | dd2a345f8f002845636dbf5d2d768bb5cd8a5f59 (diff) | |
| download | op-kernel-dev-2f4dfe206a2fc07099dfad77a8ea2f4b4ae2140f.zip op-kernel-dev-2f4dfe206a2fc07099dfad77a8ea2f4b4ae2140f.tar.gz | |
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.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/asm-um/smp.h b/include/asm-um/smp.h index ca55226..84f8cf2 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) extern struct task_struct *idle_threads[NR_CPUS]; +#else + +#define hard_smp_processor_id() 0 + #endif #endif |
