diff options
| -rw-r--r-- | arch/s390/include/asm/sysinfo.h | 35 | ||||
| -rw-r--r-- | arch/s390/kernel/topology.c | 75 |
2 files changed, 56 insertions, 54 deletions
diff --git a/arch/s390/include/asm/sysinfo.h b/arch/s390/include/asm/sysinfo.h index c2ece4dd6c0a..79d3d6e2e9c5 100644 --- a/arch/s390/include/asm/sysinfo.h +++ b/arch/s390/include/asm/sysinfo.h @@ -14,6 +14,8 @@ #ifndef __ASM_S390_SYSINFO_H #define __ASM_S390_SYSINFO_H +#include <asm/bitsperlong.h> + struct sysinfo_1_1_1 { unsigned short :16; unsigned char ccr; @@ -107,6 +109,39 @@ struct sysinfo_3_2_2 { char reserved_544[3552]; }; +#define TOPOLOGY_CPU_BITS 64 +#define TOPOLOGY_NR_MAG 6 + +struct topology_cpu { + unsigned char reserved0[4]; + unsigned char :6; + unsigned char pp:2; + unsigned char reserved1; + unsigned short origin; + unsigned long mask[TOPOLOGY_CPU_BITS / BITS_PER_LONG]; +}; + +struct topology_container { + unsigned char reserved[7]; + unsigned char id; +}; + +union topology_entry { + unsigned char nl; + struct topology_cpu cpu; + struct topology_container container; +}; + +struct sysinfo_15_1_x { + unsigned char reserved0[2]; + unsigned short length; + unsigned char mag[TOPOLOGY_NR_MAG]; + unsigned char reserved1; + unsigned char mnest; + unsigned char reserved2[4]; + union topology_entry tle[0]; +}; + static inline int stsi(void *sysinfo, int fc, int sel1, int sel2) { register int r0 asm("0") = (fc << 28) | sel1; diff --git a/arch/s390/kernel/topology.c b/arch/s390/kernel/topology.c index 69004411a93d..ffea01e63218 100644 --- a/arch/s390/kernel/topology.c +++ b/arch/s390/kernel/topology.c @@ -20,43 +20,10 @@ #include <asm/s390_ext.h> #include <asm/sysinfo.h> -#define CPU_BITS 64 -#define NR_MAG 6 - #define PTF_HORIZONTAL (0UL) #define PTF_VERTICAL (1UL) #define PTF_CHECK (2UL) -struct tl_cpu { - unsigned char reserved0[4]; - unsigned char :6; - unsigned char pp:2; - unsigned char reserved1; - unsigned short origin; - unsigned long mask[CPU_BITS / BITS_PER_LONG]; -}; - -struct tl_container { - unsigned char reserved[7]; - unsigned char id; -}; - -union tl_entry { - unsigned char nl; - struct tl_cpu cpu; - struct tl_container container; -}; - -struct tl_info { - unsigned char reserved0[2]; - unsigned short length; - unsigned char mag[NR_MAG]; - unsigned char reserved1; - unsigned char mnest; - unsigned char reserved2[4]; - union tl_entry tle[0]; -}; - struct mask_info { struct mask_info *next; unsigned char id; @@ -65,7 +32,7 @@ struct mask_info { static int topology_enabled = 1; static void topology_work_fn(struct work_struct *work); -static struct tl_info *tl_info; +static struct sysinfo_15_1_x *tl_info; static struct timer_list topology_timer; static void set_topology_timer(void); static DECLARE_WORK(topology_work, topology_work_fn); @@ -101,18 +68,18 @@ static cpumask_t cpu_group_map(struct mask_info *info, unsigned int cpu) return mask; } -static void add_cpus_to_mask(struct tl_cpu *tl_cpu, struct mask_info *book, - struct mask_info *core) +static void add_cpus_to_mask(struct topology_cpu *tl_cpu, + struct mask_info *book, struct mask_info *core) { unsigned int cpu; - for (cpu = find_first_bit(&tl_cpu->mask[0], CPU_BITS); - cpu < CPU_BITS; - cpu = find_next_bit(&tl_cpu->mask[0], CPU_BITS, cpu + 1)) + for (cpu = find_first_bit(&tl_cpu->mask[0], TOPOLOGY_CPU_BITS); + cpu < TOPOLOGY_CPU_BITS; + cpu = find_next_bit(&tl_cpu->mask[0], TOPOLOGY_CPU_BITS, cpu + 1)) { unsigned int rcpu, lcpu; - rcpu = CPU_BITS - 1 - cpu + tl_cpu->origin; + rcpu = TOPOLOGY_CPU_BITS - 1 - cpu + tl_cpu->origin; for_each_present_cpu(lcpu) { if (cpu_logical_map(lcpu) != rcpu) continue; @@ -145,15 +112,14 @@ static void clear_masks(void) #endif } -static union tl_entry *next_tle(union tl_entry *tle) +static union topology_entry *next_tle(union topology_entry *tle) { - if (tle->nl) - return (union tl_entry *)((struct tl_container *)tle + 1); - else - return (union tl_entry *)((struct tl_cpu *)tle + 1); + if (!tle->nl) + return (union topology_entry *)((struct topology_cpu *)tle + 1); + return (union topology_entry *)((struct topology_container *)tle + 1); } -static void tl_to_cores(struct tl_info *info) +static void tl_to_cores(struct sysinfo_15_1_x *info) { #ifdef CONFIG_SCHED_BOOK struct mask_info *book = &book_info; @@ -161,13 +127,13 @@ static void tl_to_cores(struct tl_info *info) struct mask_info *book = NULL; #endif struct mask_info *core = &core_info; - union tl_entry *tle, *end; + union topology_entry *tle, *end; spin_lock_irq(&topology_lock); clear_masks(); tle = info->tle; - end = (union tl_entry *)((unsigned long)info + info->length); + end = (union topology_entry *)((unsigned long)info + info->length); while (tle < end) { switch (tle->nl) { #ifdef CONFIG_SCHED_BOOK @@ -263,7 +229,7 @@ static void store_topology(struct tl_info *info) int arch_update_cpu_topology(void) { - struct tl_info *info = tl_info; + struct sysinfo_15_1_x *info = tl_info; struct sys_device *sysdev; int cpu; @@ -333,13 +299,14 @@ out: } __initcall(init_topology_update); -static void alloc_masks(struct tl_info *info, struct mask_info *mask, int offset) +static void alloc_masks(struct sysinfo_15_1_x *info, struct mask_info *mask, + int offset) { int i, nr_masks; - nr_masks = info->mag[NR_MAG - offset]; + nr_masks = info->mag[TOPOLOGY_NR_MAG - offset]; for (i = 0; i < info->mnest - offset; i++) - nr_masks *= info->mag[NR_MAG - offset - 1 - i]; + nr_masks *= info->mag[TOPOLOGY_NR_MAG - offset - 1 - i]; nr_masks = max(nr_masks, 1); for (i = 0; i < nr_masks; i++) { mask->next = alloc_bootmem(sizeof(struct mask_info)); @@ -349,7 +316,7 @@ static void alloc_masks(struct tl_info *info, struct mask_info *mask, int offset void __init s390_init_cpu_topology(void) { - struct tl_info *info; + struct sysinfo_15_1_x *info; int i; if (!MACHINE_HAS_TOPOLOGY) @@ -358,7 +325,7 @@ void __init s390_init_cpu_topology(void) info = tl_info; store_topology(info); pr_info("The CPU configuration topology of the machine is:"); - for (i = 0; i < NR_MAG; i++) + for (i = 0; i < TOPOLOGY_NR_MAG; i++) printk(" %d", info->mag[i]); printk(" / %d\n", info->mnest); alloc_masks(info, &core_info, 2); |