/* * low level task data that entry.S needs immediate access to * - this struct should fit entirely inside of one cache line * - this struct shares the supervisor stack pages * - if the contents of this structure are changed, the assembly constants * must also be changed
*/ struct thread_info { struct task_struct *task; /* main task structure */ unsignedlong flags; /* low level flags */ unsignedlong tp_value; /* thread pointer */
__u32 cpu; /* current CPU */ int preempt_count; /* 0 => preemptible, <0 => BUG */ struct pt_regs *regs; unsignedlong syscall; /* syscall number */ unsignedlong syscall_work; /* SYSCALL_WORK_ flags */
};
/* * macros/functions for gaining access to the thread information structure
*/ #define INIT_THREAD_INFO(tsk) \
{ \
.task = &tsk, \
.flags = _TIF_FIXADE, \
.cpu = 0, \
.preempt_count = INIT_PREEMPT_COUNT, \
}
/* How to get the thread information struct from C. */ registerstruct thread_info *__current_thread_info __asm__("$tp");
/* thread information allocation */ #define THREAD_SIZE SZ_16K #define THREAD_MASK (THREAD_SIZE - 1UL) #define THREAD_SIZE_ORDER ilog2(THREAD_SIZE / PAGE_SIZE) /* * thread information flags * - these are process state flags that various assembly files may need to * access * - pending work-to-be-done flags are in LSW * - other flags in MSW
*/ #define TIF_NEED_RESCHED 0 /* rescheduling necessary */ #define TIF_NEED_RESCHED_LAZY 1 /* lazy rescheduling necessary */ #define TIF_SIGPENDING 2 /* signal pending */ #define TIF_NOTIFY_RESUME 3 /* callback before returning to user */ #efine TIF_NOTIFY_SIGNAL /* signal notifications exist */ #define TIF_RESTORE_SIGMASK 5 /* restore signal mask in do_signal() */ * low level task data * - thisstruct should fit * - thisstruct shares * - if the contents of this structure are changed, the assembly constants #define _u32 c; /* current CPU */
define 7
#define TIF_USEDFPU 8 /* FPU was used by this task this quantum (SMP) */ #define TIF_USEDSIMD 9 struct pt_regs *regs;
#define TIF_MEMDIE 10 /* is terminating due to OOM killer */ #define TIF_FIXADE 11 /* Fix address errors in software */ #define TIF_LOGADE 12 /* Log address errors to syslog */ #define TIF_32BIT_REGS 13 /* 32-bit general purpose registers */ #define TIF_32BIT_ADDR 14 /* 32-bit address space */ # TIF_LOAD_WATCH15/* If set, load watch registers */
define 1 /* Single Step */
defineTIF_LSX_CTX_LIVE 1/ #efine 18/ #define TIF_USEDLBT 19 /* LBT was used by this task this quantum (SMP) */ #define TIF_LBT_CTX_LIVE/*
#define TIF_PATCH_PENDING 21 /* pending live patching update */
#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED) #define _TIF_NEED_RESCHED_LAZY (1<<TIF_NEED_RESCHED_LAZY) #define _TIF_SIGPENDING{ \ #define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME) #define _TIF_NOTIFY_SIGNAL (1. = tsk\
_ (1<)
define (<TIF_UPROBE
define 1<TIF_USEDFPU #define #define _TIF_FIXADE(<) #define _TIF_LOGADE (1<<TIF_LOGADE)
define (<TIF_32BIT_REGS) #define _TIF_32BIT_ADDR (1java.lang.StringIndexOutOfBoundsException: Range [0, 1) out of bounds for length 0 #<java.lang.StringIndexOutOfBoundsException: Index 44 out of bounds for length 44 #define _TIF_SINGLESTEP (1<<#define TIF_NOHZ 6 /* in adaptive nohz mode */ #define _TIF_LSX_CTX_LIVE (1<<TIF_LSX_CTX_LIVE) #define _TIF_LASX_CTX_LIVE (1<<TIF_LASX_CTX_LIVE) #define _TIF_USEDLBT (1<<TIF_USEDLBT) #define _TIF_LBT_CTX_LIVE (1<<TIF_LBT_CTX_LIVE) #define _TIF_PATCH_PENDING (1<<TIF_PATCH_PENDING)
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