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    Subject[PATCH 22/24] arc: Remove signal translation and exec_domain
    Date
    As execution domain support is gone we can remove
    signal translation from the signal code and remove
    exec_domain from thread_info.

    Signed-off-by: Richard Weinberger <richard@nod.at>
    ---
    arch/arc/include/asm/thread_info.h | 2 --
    arch/arc/kernel/signal.c | 14 +-------------
    2 files changed, 1 insertion(+), 15 deletions(-)

    diff --git a/arch/arc/include/asm/thread_info.h b/arch/arc/include/asm/thread_info.h
    index 1163a18..aca0d5a 100644
    --- a/arch/arc/include/asm/thread_info.h
    +++ b/arch/arc/include/asm/thread_info.h
    @@ -43,7 +43,6 @@ struct thread_info {
    int preempt_count; /* 0 => preemptable, <0 => BUG */
    struct task_struct *task; /* main task structure */
    mm_segment_t addr_limit; /* thread address space */
    - struct exec_domain *exec_domain;/* execution domain */
    __u32 cpu; /* current CPU */
    unsigned long thr_ptr; /* TLS ptr */
    };
    @@ -56,7 +55,6 @@ struct thread_info {
    #define INIT_THREAD_INFO(tsk) \
    { \
    .task = &tsk, \
    - .exec_domain = &default_exec_domain, \
    .flags = 0, \
    .cpu = 0, \
    .preempt_count = INIT_PREEMPT_COUNT, \
    diff --git a/arch/arc/kernel/signal.c b/arch/arc/kernel/signal.c
    index edda76f..2251fb4 100644
    --- a/arch/arc/kernel/signal.c
    +++ b/arch/arc/kernel/signal.c
    @@ -171,18 +171,6 @@ static inline void __user *get_sigframe(struct ksignal *ksig,
    return frame;
    }

    -/*
    - * translate the signal
    - */
    -static inline int map_sig(int sig)
    -{
    - struct thread_info *thread = current_thread_info();
    - if (thread->exec_domain && thread->exec_domain->signal_invmap
    - && sig < 32)
    - sig = thread->exec_domain->signal_invmap[sig];
    - return sig;
    -}
    -
    static int
    setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs)
    {
    @@ -231,7 +219,7 @@ setup_rt_frame(struct ksignal *ksig, sigset_t *set, struct pt_regs *regs)
    return err;

    /* #1 arg to the user Signal handler */
    - regs->r0 = map_sig(ksig->sig);
    + regs->r0 = ksig->sig;

    /* setup PC of user space signal handler */
    regs->ret = (unsigned long)ksig->ka.sa.sa_handler;
    --
    1.8.4.5


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