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| author |   Jeremy Fitzhardinge <jeremy@goop.org> | 2007-05-02 19:27:11 +0200 |
|---|---|---|
| committer |   Andi Kleen <andi@basil.nowhere.org> | 2007-05-02 19:27:11 +0200 |
| commit | 01a2f435564b4baab61328b4018d36464468f57b (patch) | |
| tree | 991f6a1604a203736131b855262d78fb75711f9b /include | |
| parent | [PATCH] i386: cleanup GDT Access (diff) | |
| download | linux-dev-01a2f435564b4baab61328b4018d36464468f57b.tar.xz linux-dev-01a2f435564b4baab61328b4018d36464468f57b.zip | |
[PATCH] i386: Add smp_ops interface
Add a smp_ops interface. This abstracts the API defined by
<linux/smp.h> for use within arch/i386. The primary intent is that it
be used by a paravirtualizing hypervisor to implement SMP, but it
could also be used by non-APIC-using sub-architectures.
This is related to CONFIG_PARAVIRT, but is implemented unconditionally
since it is simpler that way and not a highly performance-sensitive
interface.
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Andi Kleen <ak@suse.de>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/asm-i386/smp.h | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/include/asm-i386/smp.h b/include/asm-i386/smp.h index 9cab1531c613..2d083cb4ca93 100644 --- a/include/asm-i386/smp.h +++ b/include/asm-i386/smp.h @@ -49,6 +49,59 @@ extern void cpu_exit_clear(void); extern void cpu_uninit(void); #endif +struct smp_ops +{ + void (*smp_prepare_boot_cpu)(void); + void (*smp_prepare_cpus)(unsigned max_cpus); + int (*cpu_up)(unsigned cpu); + void (*smp_cpus_done)(unsigned max_cpus); + + void (*smp_send_stop)(void); + void (*smp_send_reschedule)(int cpu); + int (*smp_call_function_mask)(cpumask_t mask, + void (*func)(void *info), void *info, + int wait); +}; + +extern struct smp_ops smp_ops; + +static inline void smp_prepare_boot_cpu(void) +{ + smp_ops.smp_prepare_boot_cpu(); +} +static inline void smp_prepare_cpus(unsigned int max_cpus) +{ + smp_ops.smp_prepare_cpus(max_cpus); +} +static inline int __cpu_up(unsigned int cpu) +{ + return smp_ops.cpu_up(cpu); +} +static inline void smp_cpus_done(unsigned int max_cpus) +{ + smp_ops.smp_cpus_done(max_cpus); +} + +static inline void smp_send_stop(void) +{ + smp_ops.smp_send_stop(); +} +static inline void smp_send_reschedule(int cpu) +{ + smp_ops.smp_send_reschedule(cpu); +} +static inline int smp_call_function_mask(cpumask_t mask, + void (*func) (void *info), void *info, + int wait) +{ + return smp_ops.smp_call_function_mask(mask, func, info, wait); +} + +void native_smp_prepare_boot_cpu(void); +void native_smp_prepare_cpus(unsigned int max_cpus); +int native_cpu_up(unsigned int cpunum); +void native_smp_cpus_done(unsigned int max_cpus); + #ifndef CONFIG_PARAVIRT #define startup_ipi_hook(phys_apicid, start_eip, start_esp) \ do { } while (0) |