diff options
Diffstat (limited to 'arch/s390/kernel')
| -rw-r--r-- | arch/s390/kernel/debug.c | 20 | ||||
| -rw-r--r-- | arch/s390/kernel/irq.c | 3 | ||||
| -rw-r--r-- | arch/s390/kernel/smp.c | 16 |
3 files changed, 20 insertions, 19 deletions
diff --git a/arch/s390/kernel/debug.c b/arch/s390/kernel/debug.c index dff0568e67ec..c93d1296cc0a 100644 --- a/arch/s390/kernel/debug.c +++ b/arch/s390/kernel/debug.c @@ -71,7 +71,7 @@ static ssize_t debug_input(struct file *file, const char __user *user_buf, size_t user_len, loff_t * offset); static int debug_open(struct inode *inode, struct file *file); static int debug_close(struct inode *inode, struct file *file); -static debug_info_t* debug_info_create(char *name, int pages_per_area, +static debug_info_t *debug_info_create(const char *name, int pages_per_area, int nr_areas, int buf_size, mode_t mode); static void debug_info_get(debug_info_t *); static void debug_info_put(debug_info_t *); @@ -234,8 +234,8 @@ fail_malloc_areas: */ static debug_info_t* -debug_info_alloc(char *name, int pages_per_area, int nr_areas, int buf_size, - int level, int mode) +debug_info_alloc(const char *name, int pages_per_area, int nr_areas, + int buf_size, int level, int mode) { debug_info_t* rc; @@ -326,8 +326,8 @@ debug_info_free(debug_info_t* db_info){ */ static debug_info_t* -debug_info_create(char *name, int pages_per_area, int nr_areas, int buf_size, - mode_t mode) +debug_info_create(const char *name, int pages_per_area, int nr_areas, + int buf_size, mode_t mode) { debug_info_t* rc; @@ -684,9 +684,9 @@ debug_close(struct inode *inode, struct file *file) * - Returns handle for debug area */ -debug_info_t *debug_register_mode(char *name, int pages_per_area, int nr_areas, - int buf_size, mode_t mode, uid_t uid, - gid_t gid) +debug_info_t *debug_register_mode(const char *name, int pages_per_area, + int nr_areas, int buf_size, mode_t mode, + uid_t uid, gid_t gid) { debug_info_t *rc = NULL; @@ -722,8 +722,8 @@ EXPORT_SYMBOL(debug_register_mode); * - returns handle for debug area */ -debug_info_t *debug_register(char *name, int pages_per_area, int nr_areas, - int buf_size) +debug_info_t *debug_register(const char *name, int pages_per_area, + int nr_areas, int buf_size) { return debug_register_mode(name, pages_per_area, nr_areas, buf_size, S_IRUSR | S_IWUSR, 0, 0); diff --git a/arch/s390/kernel/irq.c b/arch/s390/kernel/irq.c index c59a86dca584..e7c5bfb7c755 100644 --- a/arch/s390/kernel/irq.c +++ b/arch/s390/kernel/irq.c @@ -25,6 +25,7 @@ int show_interrupts(struct seq_file *p, void *v) static const char *intrclass_names[] = { "EXT", "I/O", }; int i = *(loff_t *) v, j; + get_online_cpus(); if (i == 0) { seq_puts(p, " "); for_each_online_cpu(j) @@ -43,7 +44,7 @@ int show_interrupts(struct seq_file *p, void *v) seq_putc(p, '\n'); } - + put_online_cpus(); return 0; } diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index 0aeb290060d9..1f4228948dc4 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -139,7 +139,6 @@ static void __smp_call_function_map(void (*func) (void *info), void *info, if (wait) data.finished = CPU_MASK_NONE; - spin_lock(&call_lock); call_data = &data; for_each_cpu_mask(cpu, map) @@ -151,7 +150,6 @@ static void __smp_call_function_map(void (*func) (void *info), void *info, if (wait) while (!cpus_equal(map, data.finished)) cpu_relax(); - spin_unlock(&call_lock); out: if (local) { local_irq_disable(); @@ -177,11 +175,11 @@ int smp_call_function(void (*func) (void *info), void *info, int nonatomic, { cpumask_t map; - preempt_disable(); + spin_lock(&call_lock); map = cpu_online_map; cpu_clear(smp_processor_id(), map); __smp_call_function_map(func, info, nonatomic, wait, map); - preempt_enable(); + spin_unlock(&call_lock); return 0; } EXPORT_SYMBOL(smp_call_function); @@ -202,10 +200,10 @@ EXPORT_SYMBOL(smp_call_function); int smp_call_function_single(int cpu, void (*func) (void *info), void *info, int nonatomic, int wait) { - preempt_disable(); + spin_lock(&call_lock); __smp_call_function_map(func, info, nonatomic, wait, cpumask_of_cpu(cpu)); - preempt_enable(); + spin_unlock(&call_lock); return 0; } EXPORT_SYMBOL(smp_call_function_single); @@ -228,10 +226,10 @@ EXPORT_SYMBOL(smp_call_function_single); int smp_call_function_mask(cpumask_t mask, void (*func)(void *), void *info, int wait) { - preempt_disable(); + spin_lock(&call_lock); cpu_clear(smp_processor_id(), mask); __smp_call_function_map(func, info, 0, wait, mask); - preempt_enable(); + spin_unlock(&call_lock); return 0; } EXPORT_SYMBOL(smp_call_function_mask); @@ -592,7 +590,9 @@ int __cpuinit start_secondary(void *cpuvoid) pfault_init(); /* Mark this cpu as online */ + spin_lock(&call_lock); cpu_set(smp_processor_id(), cpu_online_map); + spin_unlock(&call_lock); /* Switch on interrupts */ local_irq_enable(); /* Print info about this processor */ |
