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| author | kaf24@scramble.cl.cam.ac.uk <kaf24@scramble.cl.cam.ac.uk> | 2004-03-23 09:48:06 +0000 |
|---|---|---|
| committer | kaf24@scramble.cl.cam.ac.uk <kaf24@scramble.cl.cam.ac.uk> | 2004-03-23 09:48:06 +0000 |
| commit | 2a5f90e8e88330b026e79c1a3c38a711f545c167 (patch) | |
| tree | caa5435c339291cc581777a52e4981c75b77260d /xen/include/xen/smp.h | |
| parent | c2929ecdf6cba5d5e5fd09c52e465e5f4a22fb83 (diff) | |
| download | xen-2a5f90e8e88330b026e79c1a3c38a711f545c167.tar.gz xen-2a5f90e8e88330b026e79c1a3c38a711f545c167.tar.bz2 xen-2a5f90e8e88330b026e79c1a3c38a711f545c167.zip | |
bitkeeper revision 1.821 (406007d6uu0vZYDxa9P1ZfNO9kF_Cg)
Many files:
xeno -> xen renames.
ide-xen.c:
Rename: xen/drivers/ide/ide-xeno.c -> xen/drivers/ide/ide-xen.c
xen.lds:
Rename: xen/arch/i386/xeno.lds -> xen/arch/i386/xen.lds
Many files:
mvdir
Diffstat (limited to 'xen/include/xen/smp.h')
| -rw-r--r-- | xen/include/xen/smp.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/xen/include/xen/smp.h b/xen/include/xen/smp.h new file mode 100644 index 0000000000..2cb88183a9 --- /dev/null +++ b/xen/include/xen/smp.h @@ -0,0 +1,88 @@ +#ifndef __LINUX_SMP_H +#define __LINUX_SMP_H + +/* + * Generic SMP support + * Alan Cox. <alan@redhat.com> + */ + +#include <xen/config.h> + +#ifdef CONFIG_SMP + +#include <asm/smp.h> + +/* + * main cross-CPU interfaces, handles INIT, TLB flush, STOP, etc. + * (defined in asm header): + */ + +/* + * stops all CPUs but the current one: + */ +extern void smp_send_stop(void); + +extern void FASTCALL(smp_send_event_check_mask(unsigned long cpu_mask)); +#define smp_send_event_check_cpu(_cpu) smp_send_event_check_mask(1<<(_cpu)) + + +/* + * Boot processor call to load the other CPU's + */ +extern void smp_boot_cpus(void); + +/* + * Processor call in. Must hold processors until .. + */ +extern void smp_callin(void); + +/* + * Multiprocessors may now schedule + */ +extern void smp_commence(void); + +/* + * Call a function on all other processors + */ +extern int smp_call_function (void (*func) (void *info), void *info, + int retry, int wait); + +/* + * True once the per process idle is forked + */ +extern int smp_threads_ready; + +extern int smp_num_cpus; + +extern volatile unsigned long smp_msg_data; +extern volatile int smp_src_cpu; +extern volatile int smp_msg_id; + +#define MSG_ALL_BUT_SELF 0x8000 /* Assume <32768 CPU's */ +#define MSG_ALL 0x8001 + +#define MSG_INVALIDATE_TLB 0x0001 /* Remote processor TLB invalidate */ +#define MSG_STOP_CPU 0x0002 /* Sent to shut down slave CPU's + * when rebooting + */ +#define MSG_RESCHEDULE 0x0003 /* Reschedule request from master CPU*/ +#define MSG_CALL_FUNCTION 0x0004 /* Call function on all other CPUs */ + +#else + +/* + * These macros fold the SMP functionality into a single CPU system + */ + +#define smp_num_cpus 1 +#define smp_processor_id() 0 +#define hard_smp_processor_id() 0 +#define smp_threads_ready 1 +#define kernel_lock() +#define cpu_logical_map(cpu) 0 +#define cpu_number_map(cpu) 0 +#define smp_call_function(func,info,retry,wait) ({ 0; }) +#define cpu_online_map 1 + +#endif +#endif |