diff options
Diffstat (limited to 'arch/s390/kernel')
-rw-r--r-- | arch/s390/kernel/debug.c | 22 | ||||
-rw-r--r-- | arch/s390/kernel/early.c | 45 | ||||
-rw-r--r-- | arch/s390/kernel/entry.S | 15 | ||||
-rw-r--r-- | arch/s390/kernel/entry64.S | 15 | ||||
-rw-r--r-- | arch/s390/kernel/ipl.c | 29 | ||||
-rw-r--r-- | arch/s390/kernel/process.c | 6 | ||||
-rw-r--r-- | arch/s390/kernel/setup.c | 5 | ||||
-rw-r--r-- | arch/s390/kernel/smp.c | 69 | ||||
-rw-r--r-- | arch/s390/kernel/time.c | 4 | ||||
-rw-r--r-- | arch/s390/kernel/traps.c | 9 | ||||
-rw-r--r-- | arch/s390/kernel/vtime.c | 4 |
11 files changed, 102 insertions, 121 deletions
diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c index dca6eaf82c8..1b2f5ce4532 100644 --- a/arch/s390/kernel/debug.c +++ b/arch/s390/kernel/debug.c @@ -163,7 +163,7 @@ unsigned int debug_feature_version = __DEBUG_FEATURE_VERSION; static debug_info_t *debug_area_first = NULL; static debug_info_t *debug_area_last = NULL; -static DECLARE_MUTEX(debug_lock); +static DEFINE_MUTEX(debug_mutex); static int initialized; @@ -576,7 +576,7 @@ debug_input(struct file *file, const char __user *user_buf, size_t length, int rc = 0; file_private_info_t *p_info; - down(&debug_lock); + mutex_lock(&debug_mutex); p_info = ((file_private_info_t *) file->private_data); if (p_info->view->input_proc) rc = p_info->view->input_proc(p_info->debug_info_org, @@ -584,7 +584,7 @@ debug_input(struct file *file, const char __user *user_buf, size_t length, length, offset); else rc = -EPERM; - up(&debug_lock); + mutex_unlock(&debug_mutex); return rc; /* number of input characters */ } @@ -602,7 +602,7 @@ debug_open(struct inode *inode, struct file *file) file_private_info_t *p_info; debug_info_t *debug_info, *debug_info_snapshot; - down(&debug_lock); + mutex_lock(&debug_mutex); debug_info = file->f_path.dentry->d_inode->i_private; /* find debug view */ for (i = 0; i < DEBUG_MAX_VIEWS; i++) { @@ -653,7 +653,7 @@ found: file->private_data = p_info; debug_info_get(debug_info); out: - up(&debug_lock); + mutex_unlock(&debug_mutex); return rc; } @@ -688,7 +688,7 @@ debug_register (char *name, int pages_per_area, int nr_areas, int buf_size) if (!initialized) BUG(); - down(&debug_lock); + mutex_lock(&debug_mutex); /* create new debug_info */ @@ -702,7 +702,7 @@ out: if (!rc){ printk(KERN_ERR "debug: debug_register failed for %s\n",name); } - up(&debug_lock); + mutex_unlock(&debug_mutex); return rc; } @@ -716,9 +716,9 @@ debug_unregister(debug_info_t * id) { if (!id) goto out; - down(&debug_lock); + mutex_lock(&debug_mutex); debug_info_put(id); - up(&debug_lock); + mutex_unlock(&debug_mutex); out: return; @@ -1054,11 +1054,11 @@ __init debug_init(void) int rc = 0; s390dbf_sysctl_header = register_sysctl_table(s390dbf_dir_table); - down(&debug_lock); + mutex_lock(&debug_mutex); debug_debugfs_root_entry = debugfs_create_dir(DEBUG_DIR_ROOT,NULL); printk(KERN_INFO "debug: Initialization complete\n"); initialized = 1; - up(&debug_lock); + mutex_unlock(&debug_mutex); return rc; } diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c index 50538e54561..e6289ee74ec 100644 --- a/arch/s390/kernel/early.c +++ b/arch/s390/kernel/early.c @@ -171,37 +171,6 @@ static inline int memory_fast_detect(void) } #endif -#define ADDR2G (1UL << 31) - -static noinline __init unsigned long sclp_memory_detect(void) -{ - struct sclp_readinfo_sccb *sccb; - unsigned long long memsize; - - sccb = &s390_readinfo_sccb; - - if (sccb->header.response_code != 0x10) - return 0; - - if (sccb->rnsize) - memsize = sccb->rnsize << 20; - else - memsize = sccb->rnsize2 << 20; - if (sccb->rnmax) - memsize *= sccb->rnmax; - else - memsize *= sccb->rnmax2; -#ifndef CONFIG_64BIT - /* - * Can't deal with more than 2G in 31 bit addressing mode, so - * limit the value in order to avoid strange side effects. - */ - if (memsize > ADDR2G) - memsize = ADDR2G; -#endif - return (unsigned long) memsize; -} - static inline __init unsigned long __tprot(unsigned long addr) { int cc = -1; @@ -218,6 +187,7 @@ static inline __init unsigned long __tprot(unsigned long addr) /* Checking memory in 128KB increments. */ #define CHUNK_INCR (1UL << 17) +#define ADDR2G (1UL << 31) static noinline __init void find_memory_chunks(unsigned long memsize) { @@ -293,7 +263,7 @@ static noinline __init void setup_lowcore_early(void) */ void __init startup_init(void) { - unsigned long memsize; + unsigned long long memsize; ipl_save_parameters(); clear_bss_section(); @@ -305,8 +275,17 @@ void __init startup_init(void) sort_main_extable(); setup_lowcore_early(); sclp_readinfo_early(); + sclp_facilities_detect(); memsize = sclp_memory_detect(); +#ifndef CONFIG_64BIT + /* + * Can't deal with more than 2G in 31 bit addressing mode, so + * limit the value in order to avoid strange side effects. + */ + if (memsize > ADDR2G) + memsize = ADDR2G; +#endif if (memory_fast_detect() < 0) - find_memory_chunks(memsize); + find_memory_chunks((unsigned long) memsize); lockdep_on(); } diff --git a/arch/s390/kernel/entry.S b/arch/s390/kernel/entry.S index c8a2212014e..bc7ff3658c3 100644 --- a/arch/s390/kernel/entry.S +++ b/arch/s390/kernel/entry.S @@ -107,6 +107,11 @@ STACK_SIZE = 1 << STACK_SHIFT l %r13,__LC_SVC_NEW_PSW+4 # load &system_call to %r13 .endm + .macro SAVE_ALL_SVC psworg,savearea + la %r12,\psworg + l %r15,__LC_KERNEL_STACK # problem state -> load ksp + .endm + .macro SAVE_ALL_SYNC psworg,savearea la %r12,\psworg tm \psworg+1,0x01 # test problem state bit @@ -218,7 +223,7 @@ system_call: STORE_TIMER __LC_SYNC_ENTER_TIMER sysc_saveall: SAVE_ALL_BASE __LC_SAVE_AREA - SAVE_ALL_SYNC __LC_SVC_OLD_PSW,__LC_SAVE_AREA + SAVE_ALL_SVC __LC_SVC_OLD_PSW,__LC_SAVE_AREA CREATE_STACK_FRAME __LC_SVC_OLD_PSW,__LC_SAVE_AREA lh %r7,0x8a # get svc number from lowcore #ifdef CONFIG_VIRT_CPU_ACCOUNTING @@ -769,10 +774,13 @@ mcck_return: RESTORE_ALL __LC_RETURN_MCCK_PSW,0 -#ifdef CONFIG_SMP /* * Restart interruption handler, kick starter for additional CPUs */ +#ifdef CONFIG_SMP +#ifndef CONFIG_HOTPLUG_CPU + .section .init.text,"ax" +#endif .globl restart_int_handler restart_int_handler: l %r15,__LC_SAVE_AREA+60 # load ksp @@ -785,6 +793,9 @@ restart_int_handler: br %r14 # branch to start_secondary restart_addr: .long start_secondary +#ifndef CONFIG_HOTPLUG_CPU + .previous +#endif #else /* * If we do not run with SMP enabled, let the new CPU crash ... diff --git a/arch/s390/kernel/entry64.S b/arch/s390/kernel/entry64.S index 93745fd8f55..2a7b1304418 100644 --- a/arch/s390/kernel/entry64.S +++ b/arch/s390/kernel/entry64.S @@ -99,6 +99,11 @@ _TIF_WORK_INT = (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK | _TIF_NEED_RESCHED | \ larl %r13,system_call .endm + .macro SAVE_ALL_SVC psworg,savearea + la %r12,\psworg + lg %r15,__LC_KERNEL_STACK # problem state -> load ksp + .endm + .macro SAVE_ALL_SYNC psworg,savearea la %r12,\psworg tm \psworg+1,0x01 # test problem state bit @@ -207,7 +212,7 @@ system_call: STORE_TIMER __LC_SYNC_ENTER_TIMER sysc_saveall: SAVE_ALL_BASE __LC_SAVE_AREA - SAVE_ALL_SYNC __LC_SVC_OLD_PSW,__LC_SAVE_AREA + SAVE_ALL_SVC __LC_SVC_OLD_PSW,__LC_SAVE_AREA CREATE_STACK_FRAME __LC_SVC_OLD_PSW,__LC_SAVE_AREA llgh %r7,__LC_SVC_INT_CODE # get svc number from lowcore #ifdef CONFIG_VIRT_CPU_ACCOUNTING @@ -745,10 +750,13 @@ mcck_return: #endif lpswe __LC_RETURN_MCCK_PSW # back to caller -#ifdef CONFIG_SMP /* * Restart interruption handler, kick starter for additional CPUs */ +#ifdef CONFIG_SMP +#ifndef CONFIG_HOTPLUG_CPU + .section .init.text,"ax" +#endif .globl restart_int_handler restart_int_handler: lg %r15,__LC_SAVE_AREA+120 # load ksp @@ -759,6 +767,9 @@ restart_int_handler: lmg %r6,%r15,__SF_GPRS(%r15) # load registers from clone stosm __SF_EMPTY(%r15),0x04 # now we can turn dat on jg start_secondary +#ifndef CONFIG_HOTPLUG_CPU + .previous +#endif #else /* * If we do not run with SMP enabled, let the new CPU crash ... diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c index 367caf92ea7..8b8f136d9cc 100644 --- a/arch/s390/kernel/ipl.c +++ b/arch/s390/kernel/ipl.c @@ -25,10 +25,6 @@ #define IPL_PARM_BLOCK_VERSION 0 -#define SCCB_VALID (s390_readinfo_sccb.header.response_code == 0x10) -#define SCCB_LOADPARM (&s390_readinfo_sccb.loadparm) -#define SCCB_FLAG (s390_readinfo_sccb.flags) - #define IPL_UNKNOWN_STR "unknown" #define IPL_CCW_STR "ccw" #define IPL_FCP_STR "fcp" @@ -146,6 +142,8 @@ static struct ipl_parameter_block *dump_block_ccw; static enum shutdown_action on_panic_action = SHUTDOWN_STOP; +static struct sclp_ipl_info sclp_ipl_info; + int diag308(unsigned long subcode, void *addr) { register unsigned long _addr asm("0") = (unsigned long) addr; @@ -297,8 +295,8 @@ static ssize_t sys_ipl_device_show(struct kset *kset, char *page) static struct subsys_attribute sys_ipl_device_attr = __ATTR(device, S_IRUGO, sys_ipl_device_show, NULL); -static ssize_t ipl_parameter_read(struct kobject *kobj, char *buf, loff_t off, - size_t count) +static ssize_t ipl_parameter_read(struct kobject *kobj, struct bin_attribute *attr, + char *buf, loff_t off, size_t count) { unsigned int size = IPL_PARMBLOCK_SIZE; @@ -314,14 +312,13 @@ static struct bin_attribute ipl_parameter_attr = { .attr = { .name = "binary_parameter", .mode = S_IRUGO, - .owner = THIS_MODULE, }, .size = PAGE_SIZE, .read = &ipl_parameter_read, }; -static ssize_t ipl_scp_data_read(struct kobject *kobj, char *buf, loff_t off, - size_t count) +static ssize_t ipl_scp_data_read(struct kobject *kobj, struct bin_attribute *attr, + char *buf, loff_t off, size_t count) { unsigned int size = IPL_PARMBLOCK_START->ipl_info.fcp.scp_data_len; void *scp_data = &IPL_PARMBLOCK_START->ipl_info.fcp.scp_data; @@ -338,10 +335,9 @@ static struct bin_attribute ipl_scp_data_attr = { .attr = { .name = "scp_data", .mode = S_IRUGO, - .owner = THIS_MODULE, }, .size = PAGE_SIZE, - .read = &ipl_scp_data_read, + .read = ipl_scp_data_read, }; /* FCP ipl device attributes */ @@ -375,9 +371,9 @@ static ssize_t ipl_ccw_loadparm_show(struct kset *kset, char *page) { char loadparm[LOADPARM_LEN + 1] = {}; - if (!SCCB_VALID) + if (!sclp_ipl_info.is_valid) return sprintf(page, "#unknown#\n"); - memcpy(loadparm, SCCB_LOADPARM, LOADPARM_LEN); + memcpy(loadparm, &sclp_ipl_info.loadparm, LOADPARM_LEN); EBCASC(loadparm, LOADPARM_LEN); strstrip(loadparm); return sprintf(page, "%s\n", loadparm); @@ -910,9 +906,9 @@ static int __init reipl_ccw_init(void) reipl_block_ccw->hdr.blk0_len = IPL_PARM_BLK0_CCW_LEN; reipl_block_ccw->hdr.pbt = DIAG308_IPL_TYPE_CCW; /* check if read scp info worked and set loadparm */ - if (SCCB_VALID) + if (sclp_ipl_info.is_valid) memcpy(reipl_block_ccw->ipl_info.ccw.load_param, - SCCB_LOADPARM, LOADPARM_LEN); + &sclp_ipl_info.loadparm, LOADPARM_LEN); else /* read scp info failed: set empty loadparm (EBCDIC blanks) */ memset(reipl_block_ccw->ipl_info.ccw.load_param, 0x40, @@ -1007,7 +1003,7 @@ static int __init dump_fcp_init(void) { int rc; - if(!(SCCB_FLAG & 0x2) || !SCCB_VALID) + if (!sclp_ipl_info.has_dump) return 0; /* LDIPL DUMP is not installed */ if (!diag308_set_works) return 0; @@ -1088,6 +1084,7 @@ static int __init s390_ipl_init(void) { int rc; + sclp_get_ipl_info(&sclp_ipl_info); reipl_probe(); rc = ipl_init(); if (rc) diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index eb43c3b3126..441975b796f 100644 --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c @@ -93,8 +93,8 @@ void do_monitor_call(struct pt_regs *regs, long interruption_code) /* disable monitor call class 0 */ __ctl_clear_bit(8, 15); - atomic_notifier_call_chain(&idle_chain, CPU_NOT_IDLE, - (void *)(long) smp_processor_id()); + atomic_notifier_call_chain(&idle_chain, S390_CPU_NOT_IDLE, + (void *)(long) smp_processor_id()); } extern void s390_handle_mcck(void); @@ -115,7 +115,7 @@ static void default_idle(void) } rc = atomic_notifier_call_chain(&idle_chain, - CPU_IDLE, (void *)(long) cpu); + S390_CPU_IDLE, (void *)(long) cpu); if (rc != NOTIFY_OK && rc != NOTIFY_DONE) BUG(); if (rc != NOTIFY_OK) { diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 6bfb0889eb1..7e1bfb98406 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -102,7 +102,7 @@ static struct resource data_resource = { /* * cpu_init() initializes state that is per-CPU. */ -void __devinit cpu_init (void) +void __cpuinit cpu_init(void) { int addr = hard_smp_processor_id(); @@ -300,6 +300,7 @@ static void __init setup_zfcpdump(unsigned int console_devno) else sprintf(str, "cio_ignore=all,!0.0.%04x", ipl_info.data.fcp.dev_id.devno); + strcat(COMMAND_LINE, " "); strcat(COMMAND_LINE, str); console_loglevel = 2; } @@ -915,7 +916,7 @@ setup_arch(char **cmdline_p) setup_zfcpdump(console_devno); } -void print_cpu_info(struct cpuinfo_S390 *cpuinfo) +void __cpuinit print_cpu_info(struct cpuinfo_S390 *cpuinfo) { printk("cpu %d " #ifdef CONFIG_SMP diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index 09f028a3266..182c085ae4d 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -410,58 +410,40 @@ EXPORT_SYMBOL(smp_ctl_clear_bit); unsigned int zfcpdump_prefix_array[NR_CPUS + 1] \ __attribute__((__section__(".data"))); -static void __init smp_get_save_areas(void) +static void __init smp_get_save_area(unsigned int cpu, unsigned int phy_cpu) { - unsigned int cpu, cpu_num, rc; - __u16 boot_cpu_addr; - if (ipl_info.type != IPL_TYPE_FCP_DUMP) return; - boot_cpu_addr = S390_lowcore.cpu_data.cpu_addr; - cpu_num = 1; - for (cpu = 0; cpu <= 65535; cpu++) { - if ((u16) cpu == boot_cpu_addr) - continue; - __cpu_logical_map[1] = (__u16) cpu; - if (signal_processor(1, sigp_sense) == sigp_not_operational) - continue; - if (cpu_num >= NR_CPUS) { - printk("WARNING: Registers for cpu %i are not " - "saved, since dump kernel was compiled with" - "NR_CPUS=%i!\n", cpu_num, NR_CPUS); - continue; - } - zfcpdump_save_areas[cpu_num] = - alloc_bootmem(sizeof(union save_area)); - while (1) { - rc = signal_processor(1, sigp_stop_and_store_status); - if (rc != sigp_busy) - break; - cpu_relax(); - } - memcpy(zfcpdump_save_areas[cpu_num], - (void *)(unsigned long) store_prefix() + - SAVE_AREA_BASE, SAVE_AREA_SIZE); -#ifdef __s390x__ - /* copy original prefix register */ - zfcpdump_save_areas[cpu_num]->s390x.pref_reg = - zfcpdump_prefix_array[cpu_num]; -#endif - cpu_num++; + if (cpu >= NR_CPUS) { + printk(KERN_WARNING "Registers for cpu %i not saved since dump " + "kernel was compiled with NR_CPUS=%i\n", cpu, NR_CPUS); + return; } + zfcpdump_save_areas[cpu] = alloc_bootmem(sizeof(union save_area)); + __cpu_logical_map[1] = (__u16) phy_cpu; + while (signal_processor(1, sigp_stop_and_store_status) == sigp_busy) + cpu_relax(); + memcpy(zfcpdump_save_areas[cpu], + (void *)(unsigned long) store_prefix() + SAVE_AREA_BASE, + SAVE_AREA_SIZE); +#ifdef CONFIG_64BIT + /* copy original prefix register */ + zfcpdump_save_areas[cpu]->s390x.pref_reg = zfcpdump_prefix_array[cpu]; +#endif } union save_area *zfcpdump_save_areas[NR_CPUS + 1]; EXPORT_SYMBOL_GPL(zfcpdump_save_areas); #else -#define smp_get_save_areas() do { } while (0) -#endif + +static inline void smp_get_save_area(unsigned int cpu, unsigned int phy_cpu) { } + +#endif /* CONFIG_ZFCPDUMP || CONFIG_ZFCPDUMP_MODULE */ /* * Lets check how many CPUs we have. */ - static unsigned int __init smp_count_cpus(void) { unsigned int cpu, num_cpus; @@ -470,7 +452,6 @@ static unsigned int __init smp_count_cpus(void) /* * cpu 0 is the boot cpu. See smp_prepare_boot_cpu. */ - boot_cpu_addr = S390_lowcore.cpu_data.cpu_addr; current_thread_info()->cpu = 0; num_cpus = 1; @@ -480,19 +461,18 @@ static unsigned int __init smp_count_cpus(void) __cpu_logical_map[1] = (__u16) cpu; if (signal_processor(1, sigp_sense) == sigp_not_operational) continue; + smp_get_save_area(num_cpus, cpu); num_cpus++; } - printk("Detected %d CPU's\n", (int) num_cpus); printk("Boot cpu address %2X\n", boot_cpu_addr); - return num_cpus; } /* * Activate a secondary processor. */ -int __devinit start_secondary(void *cpuvoid) +int __cpuinit start_secondary(void *cpuvoid) { /* Setup the cpu */ cpu_init(); @@ -606,7 +586,6 @@ void __init smp_setup_cpu_possible_map(void) { unsigned int phy_cpus, pos_cpus, cpu; - smp_get_save_areas(); phy_cpus = smp_count_cpus(); pos_cpus = min(phy_cpus + additional_cpus, (unsigned int) NR_CPUS); @@ -741,7 +720,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus) smp_create_idle(cpu); } -void __devinit smp_prepare_boot_cpu(void) +void __init smp_prepare_boot_cpu(void) { BUG_ON(smp_processor_id() != 0); @@ -750,7 +729,7 @@ void __devinit smp_prepare_boot_cpu(void) current_set[0] = current; } -void smp_cpus_done(unsigned int max_cpus) +void __init smp_cpus_done(unsigned int max_cpus) { cpu_present_map = cpu_possible_map; } diff --git a/arch/s390/kernel/time.c b/arch/s390/kernel/time.c index 9c2872a7cca..48dae49bc1e 100644 --- a/arch/s390/kernel/time.c +++ b/arch/s390/kernel/time.c @@ -226,10 +226,10 @@ static int nohz_idle_notify(struct notifier_block *self, unsigned long action, void *hcpu) { switch (action) { - case CPU_IDLE: + case S390_CPU_IDLE: stop_hz_timer(); break; - case CPU_NOT_IDLE: + case S390_CPU_NOT_IDLE: start_hz_timer(); break; } diff --git a/arch/s390/kernel/traps.c b/arch/s390/kernel/traps.c index cbfe73034c3..ee9186f8fb0 100644 --- a/arch/s390/kernel/traps.c +++ b/arch/s390/kernel/traps.c @@ -253,19 +253,22 @@ void die(const char * str, struct pt_regs * regs, long err) { static int die_counter; + oops_enter(); debug_stop_all(); console_verbose(); spin_lock_irq(&die_lock); bust_spinlocks(1); printk("%s: %04lx [#%d]\n", str, err & 0xffff, ++die_counter); - show_regs(regs); + print_modules(); + show_regs(regs); bust_spinlocks(0); - spin_unlock_irq(&die_lock); + spin_unlock_irq(&die_lock); if (in_interrupt()) panic("Fatal exception in interrupt"); if (panic_on_oops) panic("Fatal exception: panic_on_oops"); - do_exit(SIGSEGV); + oops_exit(); + do_exit(SIGSEGV); } static void inline diff --git a/arch/s390/kernel/vtime.c b/arch/s390/kernel/vtime.c index 1e1a6ee2cac..b6ed143e859 100644 --- a/arch/s390/kernel/vtime.c +++ b/arch/s390/kernel/vtime.c @@ -545,10 +545,10 @@ static int vtimer_idle_notify(struct notifier_block *self, unsigned long action, void *hcpu) { switch (action) { - case CPU_IDLE: + case S390_CPU_IDLE: stop_cpu_timer(); break; - case CPU_NOT_IDLE: + case S390_CPU_NOT_IDLE: start_cpu_timer(); break; } |