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author | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-21 01:38:14 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-10-21 01:40:31 +0400 |
commit | e3d2f927f788adcdabc42f8a1616f6cc56c53bbe (patch) | |
tree | ff051e33cff49e23f4c4ef84360f22cf7a1998c9 /arch/parisc/include/asm/smp.h | |
parent | a9b6148d25f15ddfe9d7a7f3e526fdb64e7cf7da (diff) | |
parent | 81e192d6ce303b6792aa38ff35f41a1a7357f23a (diff) | |
download | linux-e3d2f927f788adcdabc42f8a1616f6cc56c53bbe.tar.xz |
Merge git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/kyle/parisc-2.6:
parisc: convert to generic compat_sys_ptrace
parisc: add rtc platform driver
parisc: initialize unwinder much earlier
parisc: add new syscalls
parisc: hijack jump to start_kernel
parisc: add pdc_coproc_cfg_unlocked and set_firmware_width_unlocked
parisc: move include/asm-parisc to arch/parisc/include/asm
parisc: move pdc_result to real2.S
parisc: unify CCIO_COLLECT_STATS implementation
parisc: add arch/parisc/kernel/.gitignore
parisc: ropes.h - fix <asm-parisc/*> -> <asm/*>
parisc: parisc-agp - fix <asm-parisc/*> -> <asm/*>
Resolve remove/rename conflict: include/asm-parisc/a.out.h is no longer
relevant.
Diffstat (limited to 'arch/parisc/include/asm/smp.h')
-rw-r--r-- | arch/parisc/include/asm/smp.h | 68 |
1 files changed, 68 insertions, 0 deletions
diff --git a/arch/parisc/include/asm/smp.h b/arch/parisc/include/asm/smp.h new file mode 100644 index 000000000000..398cdbaf4e54 --- /dev/null +++ b/arch/parisc/include/asm/smp.h @@ -0,0 +1,68 @@ +#ifndef __ASM_SMP_H +#define __ASM_SMP_H + + +#if defined(CONFIG_SMP) + +/* Page Zero Location PDC will look for the address to branch to when we poke +** slave CPUs still in "Icache loop". +*/ +#define PDC_OS_BOOT_RENDEZVOUS 0x10 +#define PDC_OS_BOOT_RENDEZVOUS_HI 0x28 + +#ifndef ASSEMBLY +#include <linux/bitops.h> +#include <linux/threads.h> /* for NR_CPUS */ +#include <linux/cpumask.h> +typedef unsigned long address_t; + +extern cpumask_t cpu_online_map; + + +/* + * Private routines/data + * + * physical and logical are equivalent until we support CPU hotplug. + */ +#define cpu_number_map(cpu) (cpu) +#define cpu_logical_map(cpu) (cpu) + +extern void smp_send_reschedule(int cpu); +extern void smp_send_all_nop(void); + +extern void arch_send_call_function_single_ipi(int cpu); +extern void arch_send_call_function_ipi(cpumask_t mask); + +#endif /* !ASSEMBLY */ + +/* + * This magic constant controls our willingness to transfer + * a process across CPUs. Such a transfer incurs cache and tlb + * misses. The current value is inherited from i386. Still needs + * to be tuned for parisc. + */ + +#define PROC_CHANGE_PENALTY 15 /* Schedule penalty */ + +extern unsigned long cpu_present_mask; + +#define raw_smp_processor_id() (current_thread_info()->cpu) + +#else /* CONFIG_SMP */ + +static inline void smp_send_all_nop(void) { return; } + +#endif + +#define NO_PROC_ID 0xFF /* No processor magic marker */ +#define ANY_PROC_ID 0xFF /* Any processor magic marker */ +static inline int __cpu_disable (void) { + return 0; +} +static inline void __cpu_die (unsigned int cpu) { + while(1) + ; +} +extern int __cpu_up (unsigned int cpu); + +#endif /* __ASM_SMP_H */ |