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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2008-08-01 14:42:05 -0400
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2008-08-01 14:42:05 -0400
commitc6557e7f2b6ae76a44653d38f835174074c42e05 (patch)
treeda619a76b309cb1cd259d082af768a83cfcd6d52 /include/asm-s390/smp.h
parentab4227cb2d936886069ef1056c02500d05beb15d (diff)
[S390] move include/asm-s390 to arch/s390/include/asm
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'include/asm-s390/smp.h')
-rw-r--r--include/asm-s390/smp.h116
1 files changed, 0 insertions, 116 deletions
diff --git a/include/asm-s390/smp.h b/include/asm-s390/smp.h
deleted file mode 100644
index ae89cf2478fc..000000000000
--- a/include/asm-s390/smp.h
+++ /dev/null
@@ -1,116 +0,0 @@
1/*
2 * include/asm-s390/smp.h
3 *
4 * S390 version
5 * Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
6 * Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com),
7 * Martin Schwidefsky (schwidefsky@de.ibm.com)
8 * Heiko Carstens (heiko.carstens@de.ibm.com)
9 */
10#ifndef __ASM_SMP_H
11#define __ASM_SMP_H
12
13#include <linux/threads.h>
14#include <linux/cpumask.h>
15#include <linux/bitops.h>
16
17#if defined(__KERNEL__) && defined(CONFIG_SMP) && !defined(__ASSEMBLY__)
18
19#include <asm/lowcore.h>
20#include <asm/sigp.h>
21#include <asm/ptrace.h>
22#include <asm/system.h>
23
24/*
25 s390 specific smp.c headers
26 */
27typedef struct
28{
29 int intresting;
30 sigp_ccode ccode;
31 __u32 status;
32 __u16 cpu;
33} sigp_info;
34
35extern void machine_restart_smp(char *);
36extern void machine_halt_smp(void);
37extern void machine_power_off_smp(void);
38
39#define NO_PROC_ID 0xFF /* No processor magic marker */
40
41/*
42 * This magic constant controls our willingness to transfer
43 * a process across CPUs. Such a transfer incurs misses on the L1
44 * cache, and on a P6 or P5 with multiple L2 caches L2 hits. My
45 * gut feeling is this will vary by board in value. For a board
46 * with separate L2 cache it probably depends also on the RSS, and
47 * for a board with shared L2 cache it ought to decay fast as other
48 * processes are run.
49 */
50
51#define PROC_CHANGE_PENALTY 20 /* Schedule penalty */
52
53#define raw_smp_processor_id() (S390_lowcore.cpu_data.cpu_nr)
54
55static inline __u16 hard_smp_processor_id(void)
56{
57 return stap();
58}
59
60/*
61 * returns 1 if cpu is in stopped/check stopped state or not operational
62 * returns 0 otherwise
63 */
64static inline int
65smp_cpu_not_running(int cpu)
66{
67 __u32 status;
68
69 switch (signal_processor_ps(&status, 0, cpu, sigp_sense)) {
70 case sigp_order_code_accepted:
71 case sigp_status_stored:
72 /* Check for stopped and check stop state */
73 if (status & 0x50)
74 return 1;
75 break;
76 case sigp_not_operational:
77 return 1;
78 default:
79 break;
80 }
81 return 0;
82}
83
84#define cpu_logical_map(cpu) (cpu)
85
86extern int __cpu_disable (void);
87extern void __cpu_die (unsigned int cpu);
88extern void cpu_die (void) __attribute__ ((noreturn));
89extern int __cpu_up (unsigned int cpu);
90
91extern struct mutex smp_cpu_state_mutex;
92extern int smp_cpu_polarization[];
93
94extern int smp_call_function_mask(cpumask_t mask, void (*func)(void *),
95 void *info, int wait);
96#endif
97
98#ifndef CONFIG_SMP
99static inline void smp_send_stop(void)
100{
101 /* Disable all interrupts/machine checks */
102 __load_psw_mask(psw_kernel_bits & ~PSW_MASK_MCHECK);
103}
104
105#define hard_smp_processor_id() 0
106#define smp_cpu_not_running(cpu) 1
107#endif
108
109#ifdef CONFIG_HOTPLUG_CPU
110extern int smp_rescan_cpus(void);
111#else
112static inline int smp_rescan_cpus(void) { return 0; }
113#endif
114
115extern union save_area *zfcpdump_save_areas[NR_CPUS + 1];
116#endif