diff options
Diffstat (limited to 'include/asm-powerpc/thread_info.h')
| -rw-r--r-- | include/asm-powerpc/thread_info.h | 166 |
1 files changed, 0 insertions, 166 deletions
diff --git a/include/asm-powerpc/thread_info.h b/include/asm-powerpc/thread_info.h deleted file mode 100644 index b705c2a7651..00000000000 --- a/include/asm-powerpc/thread_info.h +++ /dev/null @@ -1,166 +0,0 @@ -/* thread_info.h: PowerPC low-level thread information - * adapted from the i386 version by Paul Mackerras - * - * Copyright (C) 2002 David Howells (dhowells@redhat.com) - * - Incorporating suggestions made by Linus Torvalds and Dave Miller - */ - -#ifndef _ASM_POWERPC_THREAD_INFO_H -#define _ASM_POWERPC_THREAD_INFO_H - -#ifdef __KERNEL__ - -/* We have 8k stacks on ppc32 and 16k on ppc64 */ - -#ifdef CONFIG_PPC64 -#define THREAD_SHIFT 14 -#else -#define THREAD_SHIFT 13 -#endif - -#define THREAD_SIZE (1 << THREAD_SHIFT) - -#ifndef __ASSEMBLY__ -#include <linux/cache.h> -#include <asm/processor.h> -#include <asm/page.h> -#include <linux/stringify.h> - -/* - * low level task data. - */ -struct thread_info { - struct task_struct *task; /* main task structure */ - struct exec_domain *exec_domain; /* execution domain */ - int cpu; /* cpu we're on */ - int preempt_count; /* 0 => preemptable, - <0 => BUG */ - struct restart_block restart_block; - unsigned long local_flags; /* private flags for thread */ - - /* low level flags - has atomic operations done on it */ - unsigned long flags ____cacheline_aligned_in_smp; -}; - -/* - * macros/functions for gaining access to the thread information structure - * - * preempt_count needs to be 1 initially, until the scheduler is functional. - */ -#define INIT_THREAD_INFO(tsk) \ -{ \ - .task = &tsk, \ - .exec_domain = &default_exec_domain, \ - .cpu = 0, \ - .preempt_count = 1, \ - .restart_block = { \ - .fn = do_no_restart_syscall, \ - }, \ - .flags = 0, \ -} - -#define init_thread_info (init_thread_union.thread_info) -#define init_stack (init_thread_union.stack) - -/* thread information allocation */ - -#if THREAD_SHIFT >= PAGE_SHIFT - -#define THREAD_ORDER (THREAD_SHIFT - PAGE_SHIFT) - -#ifdef CONFIG_DEBUG_STACK_USAGE -#define alloc_thread_info(tsk) \ - ((struct thread_info *)__get_free_pages(GFP_KERNEL | \ - __GFP_ZERO, THREAD_ORDER)) -#else -#define alloc_thread_info(tsk) \ - ((struct thread_info *)__get_free_pages(GFP_KERNEL, THREAD_ORDER)) -#endif -#define free_thread_info(ti) free_pages((unsigned long)ti, THREAD_ORDER) - -#else /* THREAD_SHIFT < PAGE_SHIFT */ - -extern struct thread_info *alloc_thread_info(struct task_struct *tsk); -extern void free_thread_info(struct thread_info *ti); - -#endif /* THREAD_SHIFT < PAGE_SHIFT */ - -/* how to get the thread information struct from C */ -static inline struct thread_info *current_thread_info(void) -{ - register unsigned long sp asm("r1"); - - /* gcc4, at least, is smart enough to turn this into a single - * rlwinm for ppc32 and clrrdi for ppc64 */ - return (struct thread_info *)(sp & ~(THREAD_SIZE-1)); -} - -#endif /* __ASSEMBLY__ */ - -#define PREEMPT_ACTIVE 0x10000000 - -/* - * thread information flag bit numbers - */ -#define TIF_SYSCALL_TRACE 0 /* syscall trace active */ -#define TIF_SIGPENDING 1 /* signal pending */ -#define TIF_NEED_RESCHED 2 /* rescheduling necessary */ -#define TIF_POLLING_NRFLAG 3 /* true if poll_idle() is polling - TIF_NEED_RESCHED */ -#define TIF_32BIT 4 /* 32 bit binary */ -#define TIF_PERFMON_WORK 5 /* work for pfm_handle_work() */ -#define TIF_PERFMON_CTXSW 6 /* perfmon needs ctxsw calls */ -#define TIF_SYSCALL_AUDIT 7 /* syscall auditing active */ -#define TIF_SINGLESTEP 8 /* singlestepping active */ -#define TIF_MEMDIE 9 -#define TIF_SECCOMP 10 /* secure computing */ -#define TIF_RESTOREALL 11 /* Restore all regs (implies NOERROR) */ -#define TIF_NOERROR 12 /* Force successful syscall return */ -#define TIF_FREEZE 14 /* Freezing for suspend */ -#define TIF_RUNLATCH 15 /* Is the runlatch enabled? */ -#define TIF_ABI_PENDING 16 /* 32/64 bit switch needed */ - -/* as above, but as bit values */ -#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE) -#define _TIF_SIGPENDING (1<<TIF_SIGPENDING) -#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED) -#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG) -#define _TIF_32BIT (1<<TIF_32BIT) -#define _TIF_PERFMON_WORK (1<<TIF_PERFMON_WORK) -#define _TIF_PERFMON_CTXSW (1<<TIF_PERFMON_CTXSW) -#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT) -#define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP) -#define _TIF_SECCOMP (1<<TIF_SECCOMP) -#define _TIF_RESTOREALL (1<<TIF_RESTOREALL) -#define _TIF_NOERROR (1<<TIF_NOERROR) -#define _TIF_FREEZE (1<<TIF_FREEZE) -#define _TIF_RUNLATCH (1<<TIF_RUNLATCH) -#define _TIF_ABI_PENDING (1<<TIF_ABI_PENDING) -#define _TIF_SYSCALL_T_OR_A (_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP) - -#define _TIF_USER_WORK_MASK (_TIF_SIGPENDING | _TIF_NEED_RESCHED) -#define _TIF_PERSYSCALL_MASK (_TIF_RESTOREALL|_TIF_NOERROR) - -/* Bits in local_flags */ -/* Don't move TLF_NAPPING without adjusting the code in entry_32.S */ -#define TLF_NAPPING 0 /* idle thread enabled NAP mode */ -#define TLF_SLEEPING 1 /* suspend code enabled SLEEP mode */ -#define TLF_RESTORE_SIGMASK 2 /* Restore signal mask in do_signal */ - -#define _TLF_NAPPING (1 << TLF_NAPPING) -#define _TLF_SLEEPING (1 << TLF_SLEEPING) -#define _TLF_RESTORE_SIGMASK (1 << TLF_RESTORE_SIGMASK) - -#ifndef __ASSEMBLY__ -#define HAVE_SET_RESTORE_SIGMASK 1 -static inline void set_restore_sigmask(void) -{ - struct thread_info *ti = current_thread_info(); - ti->local_flags |= _TLF_RESTORE_SIGMASK; - set_bit(TIF_SIGPENDING, &ti->flags); -} -#endif /* !__ASSEMBLY__ */ - -#endif /* __KERNEL__ */ - -#endif /* _ASM_POWERPC_THREAD_INFO_H */ |