diff options
Diffstat (limited to 'arch/sparc64')
| -rw-r--r-- | arch/sparc64/kernel/cpu.c | 4 | ||||
| -rw-r--r-- | arch/sparc64/kernel/ioctl32.c | 6 | ||||
| -rw-r--r-- | arch/sparc64/kernel/process.c | 24 | ||||
| -rw-r--r-- | arch/sparc64/kernel/sbus.c | 2 | ||||
| -rw-r--r-- | arch/sparc64/kernel/setup.c | 19 | ||||
| -rw-r--r-- | arch/sparc64/kernel/smp.c | 17 | ||||
| -rw-r--r-- | arch/sparc64/mm/fault.c | 4 |
7 files changed, 42 insertions, 34 deletions
diff --git a/arch/sparc64/kernel/cpu.c b/arch/sparc64/kernel/cpu.c index 77ef5df4e5a..00eed88ef2e 100644 --- a/arch/sparc64/kernel/cpu.c +++ b/arch/sparc64/kernel/cpu.c @@ -43,7 +43,7 @@ struct cpu_fp_info linux_sparc_fpu[] = { { 0x3e, 0x22, 0, "UltraSparc IIIi+ integrated FPU"}, }; -#define NSPARCFPU (sizeof(linux_sparc_fpu)/sizeof(struct cpu_fp_info)) +#define NSPARCFPU ARRAY_SIZE(linux_sparc_fpu) struct cpu_iu_info linux_sparc_chips[] = { { 0x17, 0x10, "TI UltraSparc I (SpitFire)"}, @@ -59,7 +59,7 @@ struct cpu_iu_info linux_sparc_chips[] = { { 0x3e, 0x22, "TI UltraSparc IIIi+ (Serrano)"}, }; -#define NSPARCCHIPS (sizeof(linux_sparc_chips)/sizeof(struct cpu_iu_info)) +#define NSPARCCHIPS ARRAY_SIZE(linux_sparc_chips) char *sparc_cpu_type = "cpu-oops"; char *sparc_fpu_type = "fpu-oops"; diff --git a/arch/sparc64/kernel/ioctl32.c b/arch/sparc64/kernel/ioctl32.c index 92e26304de9..e62214354bb 100644 --- a/arch/sparc64/kernel/ioctl32.c +++ b/arch/sparc64/kernel/ioctl32.c @@ -92,10 +92,8 @@ static int fbiogscursor(unsigned int fd, unsigned int cmd, unsigned long arg) return sys_ioctl (fd, FBIOSCURSOR, (unsigned long)p); } -typedef int (* ioctl32_handler_t)(unsigned int, unsigned int, unsigned long, struct file *); - #define COMPATIBLE_IOCTL(cmd) HANDLE_IOCTL((cmd),sys_ioctl) -#define HANDLE_IOCTL(cmd,handler) { (cmd), (ioctl32_handler_t)(handler), NULL }, +#define HANDLE_IOCTL(cmd,handler) { (cmd), (ioctl_trans_handler_t)(handler), NULL }, #define IOCTL_TABLE_START \ struct ioctl_trans ioctl_start[] = { #define IOCTL_TABLE_END \ @@ -116,8 +114,6 @@ COMPATIBLE_IOCTL(FBIOGCURPOS) COMPATIBLE_IOCTL(FBIOGCURMAX) /* Little k */ /* Little v, the video4linux ioctls */ -COMPATIBLE_IOCTL(_IOR('p', 20, int[7])) /* RTCGET */ -COMPATIBLE_IOCTL(_IOW('p', 21, int[7])) /* RTCSET */ /* And these ioctls need translation */ /* Note SIOCRTMSG is no longer, so this is safe and * the user would have seen just an -EINVAL anyways. */ HANDLE_IOCTL(FBIOPUTCMAP32, fbiogetputcmap) diff --git a/arch/sparc64/kernel/process.c b/arch/sparc64/kernel/process.c index 7d10b039709..02f9dec1d45 100644 --- a/arch/sparc64/kernel/process.c +++ b/arch/sparc64/kernel/process.c @@ -74,7 +74,9 @@ void cpu_idle(void) while (!need_resched()) barrier(); + preempt_enable_no_resched(); schedule(); + preempt_disable(); check_pgt_cache(); } } @@ -83,21 +85,31 @@ void cpu_idle(void) /* * the idle loop on a UltraMultiPenguin... + * + * TIF_POLLING_NRFLAG is set because we do not sleep the cpu + * inside of the idler task, so an interrupt is not needed + * to get a clean fast response. + * + * XXX Reverify this assumption... -DaveM + * + * Addendum: We do want it to do something for the signal + * delivery case, we detect that by just seeing + * if we are trying to send this to an idler or not. */ -#define idle_me_harder() (cpu_data(smp_processor_id()).idle_volume += 1) -#define unidle_me() (cpu_data(smp_processor_id()).idle_volume = 0) void cpu_idle(void) { + cpuinfo_sparc *cpuinfo = &local_cpu_data(); set_thread_flag(TIF_POLLING_NRFLAG); + while(1) { if (need_resched()) { - unidle_me(); - clear_thread_flag(TIF_POLLING_NRFLAG); + cpuinfo->idle_volume = 0; + preempt_enable_no_resched(); schedule(); - set_thread_flag(TIF_POLLING_NRFLAG); + preempt_disable(); check_pgt_cache(); } - idle_me_harder(); + cpuinfo->idle_volume++; /* The store ordering is so that IRQ handlers on * other cpus see our increasing idleness for the buddy diff --git a/arch/sparc64/kernel/sbus.c b/arch/sparc64/kernel/sbus.c index e09ddf92765..96b82505566 100644 --- a/arch/sparc64/kernel/sbus.c +++ b/arch/sparc64/kernel/sbus.c @@ -790,7 +790,7 @@ static unsigned long sysio_irq_offsets[] = { #undef bogon -#define NUM_SYSIO_OFFSETS (sizeof(sysio_irq_offsets) / sizeof(sysio_irq_offsets[0])) +#define NUM_SYSIO_OFFSETS ARRAY_SIZE(sysio_irq_offsets) /* Convert Interrupt Mapping register pointer to associated * Interrupt Clear register pointer, SYSIO specific version. diff --git a/arch/sparc64/kernel/setup.c b/arch/sparc64/kernel/setup.c index bf1849dd9c4..48180531562 100644 --- a/arch/sparc64/kernel/setup.c +++ b/arch/sparc64/kernel/setup.c @@ -587,6 +587,8 @@ extern void mmu_info(struct seq_file *); unsigned int dcache_parity_tl1_occurred; unsigned int icache_parity_tl1_occurred; +static int ncpus_probed; + static int show_cpuinfo(struct seq_file *m, void *__unused) { seq_printf(m, @@ -595,8 +597,8 @@ static int show_cpuinfo(struct seq_file *m, void *__unused) "promlib\t\t: Version 3 Revision %d\n" "prom\t\t: %d.%d.%d\n" "type\t\t: sun4u\n" - "ncpus probed\t: %ld\n" - "ncpus active\t: %ld\n" + "ncpus probed\t: %d\n" + "ncpus active\t: %d\n" "D$ parity tl1\t: %u\n" "I$ parity tl1\t: %u\n" #ifndef CONFIG_SMP @@ -610,8 +612,8 @@ static int show_cpuinfo(struct seq_file *m, void *__unused) prom_prev >> 16, (prom_prev >> 8) & 0xff, prom_prev & 0xff, - (long)num_possible_cpus(), - (long)num_online_cpus(), + ncpus_probed, + num_online_cpus(), dcache_parity_tl1_occurred, icache_parity_tl1_occurred #ifndef CONFIG_SMP @@ -677,6 +679,15 @@ static int __init topology_init(void) int i, err; err = -ENOMEM; + + /* Count the number of physically present processors in + * the machine, even on uniprocessor, so that /proc/cpuinfo + * output is consistent with 2.4.x + */ + ncpus_probed = 0; + while (!cpu_find_by_instance(ncpus_probed, NULL, NULL)) + ncpus_probed++; + for (i = 0; i < NR_CPUS; i++) { if (cpu_possible(i)) { struct cpu *p = kmalloc(sizeof(*p), GFP_KERNEL); diff --git a/arch/sparc64/kernel/smp.c b/arch/sparc64/kernel/smp.c index 5d90ee9aebf..6efc03df51c 100644 --- a/arch/sparc64/kernel/smp.c +++ b/arch/sparc64/kernel/smp.c @@ -39,7 +39,6 @@ #include <asm/starfire.h> #include <asm/tlb.h> -extern int linux_num_cpus; extern void calibrate_delay(void); /* Please don't make this stuff initdata!!! --DaveM */ @@ -168,6 +167,9 @@ void __init smp_callin(void) rmb(); cpu_set(cpuid, cpu_online_map); + + /* idle thread is expected to have preempt disabled */ + preempt_disable(); } void cpu_panic(void) @@ -1149,20 +1151,9 @@ void __init smp_cpus_done(unsigned int max_cpus) (bogosum/(5000/HZ))%100); } -/* This needn't do anything as we do not sleep the cpu - * inside of the idler task, so an interrupt is not needed - * to get a clean fast response. - * - * XXX Reverify this assumption... -DaveM - * - * Addendum: We do want it to do something for the signal - * delivery case, we detect that by just seeing - * if we are trying to send this to an idler or not. - */ void smp_send_reschedule(int cpu) { - if (cpu_data(cpu).idle_volume == 0) - smp_receive_signal(cpu); + smp_receive_signal(cpu); } /* This is a nop because we capture all other cpus diff --git a/arch/sparc64/mm/fault.c b/arch/sparc64/mm/fault.c index 31fbc67719a..6f0539aa44d 100644 --- a/arch/sparc64/mm/fault.c +++ b/arch/sparc64/mm/fault.c @@ -30,8 +30,6 @@ #include <asm/sections.h> #include <asm/kdebug.h> -#define ELEMENTS(arr) (sizeof (arr)/sizeof (arr[0])) - /* * To debug kernel to catch accesses to certain virtual/physical addresses. * Mode = 0 selects physical watchpoints, mode = 1 selects virtual watchpoints. @@ -109,7 +107,7 @@ static void bad_kernel_pc(struct pt_regs *regs) * this. Additionally, to prevent kswapd from ripping ptes from * under us, raise interrupts around the time that we look at the * pte, kswapd will have to wait to get his smp ipi response from - * us. This saves us having to get page_table_lock. + * us. vmtruncate likewise. This saves us having to get pte lock. */ static unsigned int get_user_insn(unsigned long tpc) { |