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Diffstat (limited to 'include/asm-s390/smp.h')
| -rw-r--r-- | include/asm-s390/smp.h | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/include/asm-s390/smp.h b/include/asm-s390/smp.h deleted file mode 100644 index a2ae7628bba..00000000000 --- a/include/asm-s390/smp.h +++ /dev/null @@ -1,108 +0,0 @@ -/* - * include/asm-s390/smp.h - * - * S390 version - * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation - * Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com), - * Martin Schwidefsky (schwidefsky@de.ibm.com) - * Heiko Carstens (heiko.carstens@de.ibm.com) - */ -#ifndef __ASM_SMP_H -#define __ASM_SMP_H - -#include <linux/config.h> -#include <linux/threads.h> -#include <linux/cpumask.h> -#include <linux/bitops.h> - -#if defined(__KERNEL__) && defined(CONFIG_SMP) && !defined(__ASSEMBLY__) - -#include <asm/lowcore.h> -#include <asm/sigp.h> - -/* - s390 specific smp.c headers - */ -typedef struct -{ - int intresting; - sigp_ccode ccode; - __u32 status; - __u16 cpu; -} sigp_info; - -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 */ - -/* - * This magic constant controls our willingness to transfer - * a process across CPUs. Such a transfer incurs misses on the L1 - * cache, and on a P6 or P5 with multiple L2 caches L2 hits. My - * gut feeling is this will vary by board in value. For a board - * with separate L2 cache it probably depends also on the RSS, and - * for a board with shared L2 cache it ought to decay fast as other - * processes are run. - */ - -#define PROC_CHANGE_PENALTY 20 /* Schedule penalty */ - -#define raw_smp_processor_id() (S390_lowcore.cpu_data.cpu_nr) - -extern int smp_get_cpu(cpumask_t cpu_map); -extern void smp_put_cpu(int cpu); - -static inline __u16 hard_smp_processor_id(void) -{ - __u16 cpu_address; - - __asm__ ("stap %0\n" : "=m" (cpu_address)); - return cpu_address; -} - -/* - * returns 1 if cpu is in stopped/check stopped state or not operational - * returns 0 otherwise - */ -static inline int -smp_cpu_not_running(int cpu) -{ - __u32 status; - - switch (signal_processor_ps(&status, 0, cpu, sigp_sense)) { - case sigp_order_code_accepted: - case sigp_status_stored: - /* Check for stopped and check stop state */ - if (status & 0x50) - return 1; - break; - case sigp_not_operational: - return 1; - default: - break; - } - return 0; -} - -#define cpu_logical_map(cpu) (cpu) - -extern int __cpu_disable (void); -extern void __cpu_die (unsigned int cpu); -extern void cpu_die (void) __attribute__ ((noreturn)); -extern int __cpu_up (unsigned int cpu); - -#endif - -#ifndef CONFIG_SMP -static inline int -smp_call_function_on(void (*func) (void *info), void *info, - int nonatomic, int wait, int cpu) -{ - func(info); - return 0; -} -#define smp_get_cpu(cpu) ({ 0; }) -#define smp_put_cpu(cpu) ({ 0; }) -#endif - -#endif |
