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authorHeiko Carstens <heiko.carstens@de.ibm.com>2006-02-17 13:52:46 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2006-02-17 13:59:26 -0800
commit255acee706b333b79f593dd366f16e1f107cccc3 (patch)
tree47c68487eda1df3bf026444045106301bd3a3ff5 /include
parent1fca251f36fac3fae7d9cf10de69c2c93f6c0000 (diff)
downloadop-kernel-dev-255acee706b333b79f593dd366f16e1f107cccc3.zip
op-kernel-dev-255acee706b333b79f593dd366f16e1f107cccc3.tar.gz
[PATCH] s390: additional_cpus parameter
Introduce additional_cpus command line option. By default no additional cpu can be attached to the system anymore. Only the cpus present at IPL time can be switched on/off. If it is desired that additional cpus can be attached to the system the maximum number of additional cpus needs to be specified with this option. This change is necessary in order to limit the waste of per_cpu data structures. Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include')
-rw-r--r--include/asm-s390/smp.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-s390/smp.h b/include/asm-s390/smp.h
index 9c6e9c3..444dae5 100644
--- a/include/asm-s390/smp.h
+++ b/include/asm-s390/smp.h
@@ -31,6 +31,7 @@ typedef struct
__u16 cpu;
} sigp_info;
+extern void smp_setup_cpu_possible_map(void);
extern int smp_call_function_on(void (*func) (void *info), void *info,
int nonatomic, int wait, int cpu);
#define NO_PROC_ID 0xFF /* No processor magic marker */
@@ -104,6 +105,7 @@ smp_call_function_on(void (*func) (void *info), void *info,
#define smp_cpu_not_running(cpu) 1
#define smp_get_cpu(cpu) ({ 0; })
#define smp_put_cpu(cpu) ({ 0; })
+#define smp_setup_cpu_possible_map()
#endif
#endif
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