diff options
Diffstat (limited to 'arch/ia64/include/asm/processor.h')
| -rw-r--r-- | arch/ia64/include/asm/processor.h | 150 |
1 files changed, 45 insertions, 105 deletions
diff --git a/arch/ia64/include/asm/processor.h b/arch/ia64/include/asm/processor.h index f88fa054d01..efd1b927ccb 100644 --- a/arch/ia64/include/asm/processor.h +++ b/arch/ia64/include/asm/processor.h @@ -19,6 +19,9 @@ #include <asm/ptrace.h> #include <asm/ustack.h> +#define __ARCH_WANT_UNLOCKED_CTXSW +#define ARCH_HAS_PREFETCH_SWITCH_STACK + #define IA64_NUM_PHYS_STACK_REG 96 #define IA64_NUM_DBG_REGS 8 @@ -31,8 +34,7 @@ * each (assuming 8KB page size), for a total of 8TB of user virtual * address space. */ -#define TASK_SIZE_OF(tsk) ((tsk)->thread.task_size) -#define TASK_SIZE TASK_SIZE_OF(current) +#define TASK_SIZE DEFAULT_TASK_SIZE /* * This decides where the kernel will search for a free chunk of vm @@ -69,13 +71,14 @@ #include <linux/compiler.h> #include <linux/threads.h> #include <linux/types.h> +#include <linux/bitops.h> #include <asm/fpu.h> #include <asm/page.h> #include <asm/percpu.h> #include <asm/rse.h> #include <asm/unwind.h> -#include <asm/atomic.h> +#include <linux/atomic.h> #ifdef CONFIG_NUMA #include <asm/nodedata.h> #endif @@ -187,40 +190,40 @@ union ia64_rr { * state comes earlier: */ struct cpuinfo_ia64 { - __u32 softirq_pending; - __u64 itm_delta; /* # of clock cycles between clock ticks */ - __u64 itm_next; /* interval timer mask value to use for next clock tick */ - __u64 nsec_per_cyc; /* (1000000000<<IA64_NSEC_PER_CYC_SHIFT)/itc_freq */ - __u64 unimpl_va_mask; /* mask of unimplemented virtual address bits (from PAL) */ - __u64 unimpl_pa_mask; /* mask of unimplemented physical address bits (from PAL) */ - __u64 itc_freq; /* frequency of ITC counter */ - __u64 proc_freq; /* frequency of processor */ - __u64 cyc_per_usec; /* itc_freq/1000000 */ - __u64 ptce_base; - __u32 ptce_count[2]; - __u32 ptce_stride[2]; + unsigned int softirq_pending; + unsigned long itm_delta; /* # of clock cycles between clock ticks */ + unsigned long itm_next; /* interval timer mask value to use for next clock tick */ + unsigned long nsec_per_cyc; /* (1000000000<<IA64_NSEC_PER_CYC_SHIFT)/itc_freq */ + unsigned long unimpl_va_mask; /* mask of unimplemented virtual address bits (from PAL) */ + unsigned long unimpl_pa_mask; /* mask of unimplemented physical address bits (from PAL) */ + unsigned long itc_freq; /* frequency of ITC counter */ + unsigned long proc_freq; /* frequency of processor */ + unsigned long cyc_per_usec; /* itc_freq/1000000 */ + unsigned long ptce_base; + unsigned int ptce_count[2]; + unsigned int ptce_stride[2]; struct task_struct *ksoftirqd; /* kernel softirq daemon for this CPU */ #ifdef CONFIG_SMP - __u64 loops_per_jiffy; + unsigned long loops_per_jiffy; int cpu; - __u32 socket_id; /* physical processor socket id */ - __u16 core_id; /* core id */ - __u16 thread_id; /* thread id */ - __u16 num_log; /* Total number of logical processors on + unsigned int socket_id; /* physical processor socket id */ + unsigned short core_id; /* core id */ + unsigned short thread_id; /* thread id */ + unsigned short num_log; /* Total number of logical processors on * this socket that were successfully booted */ - __u8 cores_per_socket; /* Cores per processor socket */ - __u8 threads_per_core; /* Threads per core */ + unsigned char cores_per_socket; /* Cores per processor socket */ + unsigned char threads_per_core; /* Threads per core */ #endif /* CPUID-derived information: */ - __u64 ppn; - __u64 features; - __u8 number; - __u8 revision; - __u8 model; - __u8 family; - __u8 archrev; + unsigned long ppn; + unsigned long features; + unsigned char number; + unsigned char revision; + unsigned char model; + unsigned char family; + unsigned char archrev; char vendor[16]; char *model_name; @@ -229,7 +232,7 @@ struct cpuinfo_ia64 { #endif }; -DECLARE_PER_CPU(struct cpuinfo_ia64, cpu_info); +DECLARE_PER_CPU(struct cpuinfo_ia64, ia64_cpu_info); /* * The "local" data variable. It refers to the per-CPU data of the currently executing @@ -237,8 +240,8 @@ DECLARE_PER_CPU(struct cpuinfo_ia64, cpu_info); * Do not use the address of local_cpu_data, since it will be different from * cpu_data(smp_processor_id())! */ -#define local_cpu_data (&__ia64_per_cpu_var(cpu_info)) -#define cpu_data(cpu) (&per_cpu(cpu_info, cpu)) +#define local_cpu_data (&__ia64_per_cpu_var(ia64_cpu_info)) +#define cpu_data(cpu) (&per_cpu(ia64_cpu_info, cpu)) extern void print_cpu_info (struct cpuinfo_ia64 *); @@ -270,23 +273,6 @@ typedef struct { (int __user *) (addr)); \ }) -#ifdef CONFIG_IA32_SUPPORT -struct desc_struct { - unsigned int a, b; -}; - -#define desc_empty(desc) (!((desc)->a | (desc)->b)) -#define desc_equal(desc1, desc2) (((desc1)->a == (desc2)->a) && ((desc1)->b == (desc2)->b)) - -#define GDT_ENTRY_TLS_ENTRIES 3 -#define GDT_ENTRY_TLS_MIN 6 -#define GDT_ENTRY_TLS_MAX (GDT_ENTRY_TLS_MIN + GDT_ENTRY_TLS_ENTRIES - 1) - -#define TLS_SIZE (GDT_ENTRY_TLS_ENTRIES * 8) - -struct ia64_partial_page_list; -#endif - struct thread_struct { __u32 flags; /* various thread flags (see IA64_THREAD_*) */ /* writing on_ustack is performance-critical, so it's worth spending 8 bits on it... */ @@ -294,33 +280,9 @@ struct thread_struct { __u8 pad[3]; __u64 ksp; /* kernel stack pointer */ __u64 map_base; /* base address for get_unmapped_area() */ - __u64 task_size; /* limit for task size */ __u64 rbs_bot; /* the base address for the RBS */ int last_fph_cpu; /* CPU that may hold the contents of f32-f127 */ -#ifdef CONFIG_IA32_SUPPORT - __u64 eflag; /* IA32 EFLAGS reg */ - __u64 fsr; /* IA32 floating pt status reg */ - __u64 fcr; /* IA32 floating pt control reg */ - __u64 fir; /* IA32 fp except. instr. reg */ - __u64 fdr; /* IA32 fp except. data reg */ - __u64 old_k1; /* old value of ar.k1 */ - __u64 old_iob; /* old IOBase value */ - struct ia64_partial_page_list *ppl; /* partial page list for 4K page size issue */ - /* cached TLS descriptors. */ - struct desc_struct tls_array[GDT_ENTRY_TLS_ENTRIES]; - -# define INIT_THREAD_IA32 .eflag = 0, \ - .fsr = 0, \ - .fcr = 0x17800000037fULL, \ - .fir = 0, \ - .fdr = 0, \ - .old_k1 = 0, \ - .old_iob = 0, \ - .ppl = NULL, -#else -# define INIT_THREAD_IA32 -#endif /* CONFIG_IA32_SUPPORT */ #ifdef CONFIG_PERFMON void *pfm_context; /* pointer to detailed PMU context */ unsigned long pfm_needs_checking; /* when >0, pending perfmon work on kernel exit */ @@ -329,8 +291,8 @@ struct thread_struct { #else # define INIT_THREAD_PM #endif - __u64 dbr[IA64_NUM_DBG_REGS]; - __u64 ibr[IA64_NUM_DBG_REGS]; + unsigned long dbr[IA64_NUM_DBG_REGS]; + unsigned long ibr[IA64_NUM_DBG_REGS]; struct ia64_fpreg fph[96]; /* saved/loaded on demand */ }; @@ -340,9 +302,7 @@ struct thread_struct { .ksp = 0, \ .map_base = DEFAULT_MAP_BASE, \ .rbs_bot = STACK_TOP - DEFAULT_USER_STACK_SIZE, \ - .task_size = DEFAULT_TASK_SIZE, \ .last_fph_cpu = -1, \ - INIT_THREAD_IA32 \ INIT_THREAD_PM \ .dbr = {0, }, \ .ibr = {0, }, \ @@ -350,7 +310,6 @@ struct thread_struct { } #define start_thread(regs,new_ip,new_sp) do { \ - set_fs(USER_DS); \ regs->cr_ipsr = ((regs->cr_ipsr | (IA64_PSR_BITS_TO_SET | IA64_PSR_CPL)) \ & ~(IA64_PSR_BITS_TO_CLEAR | IA64_PSR_RI | IA64_PSR_IS)); \ regs->cr_iip = new_ip; \ @@ -361,7 +320,7 @@ struct thread_struct { regs->loadrs = 0; \ regs->r8 = get_dumpable(current->mm); /* set "don't zap registers" flag */ \ regs->r12 = new_sp - 16; /* allocate 16 byte scratch area */ \ - if (unlikely(!get_dumpable(current->mm))) { \ + if (unlikely(get_dumpable(current->mm) != SUID_DUMP_USER)) { \ /* \ * Zap scratch regs to avoid leaking bits between processes with different \ * uid/privileges. \ @@ -382,25 +341,6 @@ struct task_struct; */ #define release_thread(dead_task) -/* Prepare to copy thread state - unlazy all lazy status */ -#define prepare_to_copy(tsk) do { } while (0) - -/* - * This is the mechanism for creating a new kernel thread. - * - * NOTE 1: Only a kernel-only process (ie the swapper or direct - * descendants who haven't done an "execve()") should use this: it - * will work within a system call from a "real" process, but the - * process memory space will not be free'd until both the parent and - * the child have exited. - * - * NOTE 2: This MUST NOT be an inlined function. Otherwise, we get - * into trouble in init/main.c when the child thread returns to - * do_basic_setup() and the timing is such that free_initmem() has - * been called already. - */ -extern pid_t kernel_thread (int (*fn)(void *), void *arg, unsigned long flags); - /* Get wait channel for task P. */ extern unsigned long get_wchan (struct task_struct *p); @@ -485,11 +425,6 @@ extern void __ia64_load_fpu (struct ia64_fpreg *fph); extern void ia64_save_debug_regs (unsigned long *save_area); extern void ia64_load_debug_regs (unsigned long *save_area); -#ifdef CONFIG_IA32_SUPPORT -extern void ia32_save_state (struct task_struct *task); -extern void ia32_load_state (struct task_struct *task); -#endif - #define ia64_fph_enable() do { ia64_rsm(IA64_PSR_DFH); ia64_srlz_d(); } while (0) #define ia64_fph_disable() do { ia64_ssm(IA64_PSR_DFH); ia64_srlz_d(); } while (0) @@ -763,8 +698,13 @@ prefetchw (const void *x) #define spin_lock_prefetch(x) prefetchw(x) extern unsigned long boot_option_idle_override; -extern unsigned long idle_halt; -extern unsigned long idle_nomwait; + +enum idle_boot_override {IDLE_NO_OVERRIDE=0, IDLE_HALT, IDLE_FORCE_MWAIT, + IDLE_NOMWAIT, IDLE_POLL}; + +void default_idle(void); + +#define ia64_platform_is(x) (strcmp(x, ia64_platform_name) == 0) #endif /* !__ASSEMBLY__ */ |