diff options
author | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2010-05-17 10:00:00 +0200 |
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committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2010-05-17 10:00:15 +0200 |
commit | 94038a99119c171aea27608f81c7ba359de98c4e (patch) | |
tree | f74a84b289eb256f2b0674efb49640733b003b29 /arch/s390/kernel | |
parent | e40152ee1e1c7a63f4777791863215e3faa37a86 (diff) |
[S390] More cleanup for struct _lowcore
Remove cpu_id from lowcore and replace addr_t with __u64.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel')
-rw-r--r-- | arch/s390/kernel/asm-offsets.c | 1 | ||||
-rw-r--r-- | arch/s390/kernel/head.S | 4 | ||||
-rw-r--r-- | arch/s390/kernel/processor.c | 37 | ||||
-rw-r--r-- | arch/s390/kernel/setup.c | 20 |
4 files changed, 29 insertions, 33 deletions
diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c index a09408952ed0..32b1ede69858 100644 --- a/arch/s390/kernel/asm-offsets.c +++ b/arch/s390/kernel/asm-offsets.c @@ -126,7 +126,6 @@ int main(void) DEFINE(__LC_KERNEL_ASCE, offsetof(struct _lowcore, kernel_asce)); DEFINE(__LC_USER_ASCE, offsetof(struct _lowcore, user_asce)); DEFINE(__LC_USER_EXEC_ASCE, offsetof(struct _lowcore, user_exec_asce)); - DEFINE(__LC_CPUID, offsetof(struct _lowcore, cpu_id)); DEFINE(__LC_INT_CLOCK, offsetof(struct _lowcore, int_clock)); DEFINE(__LC_MACHINE_FLAGS, offsetof(struct _lowcore, machine_flags)); DEFINE(__LC_FTRACE_FUNC, offsetof(struct _lowcore, ftrace_func)); diff --git a/arch/s390/kernel/head.S b/arch/s390/kernel/head.S index 9d1f76702d47..51838ad42d56 100644 --- a/arch/s390/kernel/head.S +++ b/arch/s390/kernel/head.S @@ -328,8 +328,8 @@ iplstart: # # reset files in VM reader # - stidp __LC_CPUID # store cpuid - tm __LC_CPUID,0xff # running VM ? + stidp __LC_SAVE_AREA # store cpuid + tm __LC_SAVE_AREA,0xff # running VM ? bno .Lnoreset la %r2,.Lreset lhi %r3,26 diff --git a/arch/s390/kernel/processor.c b/arch/s390/kernel/processor.c index 0729f36c2fe3..ecb2d02b02e4 100644 --- a/arch/s390/kernel/processor.c +++ b/arch/s390/kernel/processor.c @@ -18,24 +18,42 @@ #include <asm/lowcore.h> #include <asm/param.h> +static DEFINE_PER_CPU(struct cpuid, cpu_id); + +/* + * cpu_init - initializes state that is per-CPU. + */ +void __cpuinit cpu_init(void) +{ + struct cpuid *id = &per_cpu(cpu_id, smp_processor_id()); + + get_cpu_id(id); + atomic_inc(&init_mm.mm_count); + current->active_mm = &init_mm; + BUG_ON(current->mm); + enter_lazy_tlb(&init_mm, current); +} + +/* + * print_cpu_info - print basic information about a cpu + */ void __cpuinit print_cpu_info(void) { + struct cpuid *id = &per_cpu(cpu_id, smp_processor_id()); + pr_info("Processor %d started, address %d, identification %06X\n", - S390_lowcore.cpu_nr, S390_lowcore.cpu_addr, - S390_lowcore.cpu_id.ident); + S390_lowcore.cpu_nr, S390_lowcore.cpu_addr, id->ident); } /* * show_cpuinfo - Get information on one CPU for use by procfs. */ - static int show_cpuinfo(struct seq_file *m, void *v) { static const char *hwcap_str[10] = { "esan3", "zarch", "stfle", "msa", "ldisp", "eimm", "dfp", "edat", "etf3eh", "highgprs" }; - struct _lowcore *lc; unsigned long n = (unsigned long) v - 1; int i; @@ -55,19 +73,12 @@ static int show_cpuinfo(struct seq_file *m, void *v) } if (cpu_online(n)) { -#ifdef CONFIG_SMP - lc = (smp_processor_id() == n) ? - &S390_lowcore : lowcore_ptr[n]; -#else - lc = &S390_lowcore; -#endif + struct cpuid *id = &per_cpu(cpu_id, n); seq_printf(m, "processor %li: " "version = %02X, " "identification = %06X, " "machine = %04X\n", - n, lc->cpu_id.version, - lc->cpu_id.ident, - lc->cpu_id.machine); + n, id->version, id->ident, id->machine); } preempt_enable(); return 0; diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 91625f759ccd..6309276516b9 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -113,22 +113,6 @@ static struct resource data_resource = { }; /* - * cpu_init() initializes state that is per-CPU. - */ -void __cpuinit cpu_init(void) -{ - /* - * Store processor id in lowcore (used e.g. in timer_interrupt) - */ - get_cpu_id(&S390_lowcore.cpu_id); - - atomic_inc(&init_mm.mm_count); - current->active_mm = &init_mm; - BUG_ON(current->mm); - enter_lazy_tlb(&init_mm, current); -} - -/* * condev= and conmode= setup parameter. */ @@ -695,6 +679,7 @@ static void __init setup_hwcaps(void) static const int stfl_bits[6] = { 0, 2, 7, 17, 19, 21 }; unsigned long long facility_list_extended; unsigned int facility_list; + struct cpuid cpu_id; int i; facility_list = stfl(); @@ -756,7 +741,8 @@ static void __init setup_hwcaps(void) */ elf_hwcap |= HWCAP_S390_HIGH_GPRS; - switch (S390_lowcore.cpu_id.machine) { + get_cpu_id(&cpu_id); + switch (cpu_id.machine) { case 0x9672: #if !defined(CONFIG_64BIT) default: /* Use "g5" as default for 31 bit kernels. */ |