Re: [PATCH 18/43] score: Use get_signal() signal_setup_done()

[Lennox Wu <lennox.wu@xxxxxxxxx>]

It was merged into Score's git tree, and it will show in the next PULL 
request.

Best,
Lennox

Lennox Wu 於 2014/7/21 下午 10:47 寫道:
> I am picking up some missed patches and merging them into our git
> tree. If the patch is missed, we will merge it.
>
> Best,
> Lennox
>
> 2014-07-21 22:03 GMT+08:00 Richard Weinberger <richard@xxxxxxxxxxxxx>:
> > From: Richard Weinberger <richard@xxxxxx>
> >
> > Use the more generic functions get_signal() signal_setup_done()
> > for signal delivery.
> >
> > Acked-by: Lennox Wu <lennox.wu@xxxxxxxxx>
> > Signed-off-by: Richard Weinberger <richard@xxxxxx>
> > ---
> >   arch/score/kernel/signal.c | 43 ++++++++++++++++++-------------------------
> >   1 file changed, 18 insertions(+), 25 deletions(-)
> >
> > diff --git a/arch/score/kernel/signal.c b/arch/score/kernel/signal.c
> > index a00fba3..1651807 100644
> > --- a/arch/score/kernel/signal.c
> > +++ b/arch/score/kernel/signal.c
> > @@ -173,15 +173,15 @@ badframe:
> >          return 0;
> >   }
> >
> > -static int setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs,
> > -               int signr, sigset_t *set, siginfo_t *info)
> > +static int setup_rt_frame(struct ksignal *ksig, struct pt_regs *regs,
> > +                         sigset_t *set)
> >   {
> >          struct rt_sigframe __user *frame;
> >          int err = 0;
> >
> > -       frame = get_sigframe(ka, regs, sizeof(*frame));
> > +       frame = get_sigframe(&ksig->ka, regs, sizeof(*frame));
> >          if (!access_ok(VERIFY_WRITE, frame, sizeof(*frame)))
> > -               goto give_sigsegv;
> > +               return -EFAULT;
> >
> >          /*
> >           * Set up the return code ...
> > @@ -194,7 +194,7 @@ static int setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs,
> >          err |= __put_user(0x80008002, frame->rs_code + 1);
> >          flush_cache_sigtramp((unsigned long) frame->rs_code);
> >
> > -       err |= copy_siginfo_to_user(&frame->rs_info, info);
> > +       err |= copy_siginfo_to_user(&frame->rs_info, &ksig->info);
> >          err |= __put_user(0, &frame->rs_uc.uc_flags);
> >          err |= __put_user(NULL, &frame->rs_uc.uc_link);
> >          err |= __save_altstack(&frame->rs_uc.uc_stack, regs->regs[0]);
> > @@ -202,26 +202,23 @@ static int setup_rt_frame(struct k_sigaction *ka, struct pt_regs *regs,
> >          err |= __copy_to_user(&frame->rs_uc.uc_sigmask, set, sizeof(*set));
> >
> >          if (err)
> > -               goto give_sigsegv;
> > +               return -EFAULT;
> >
> >          regs->regs[0] = (unsigned long) frame;
> >          regs->regs[3] = (unsigned long) frame->rs_code;
> > -       regs->regs[4] = signr;
> > +       regs->regs[4] = ksig->sig;
> >          regs->regs[5] = (unsigned long) &frame->rs_info;
> >          regs->regs[6] = (unsigned long) &frame->rs_uc;
> > -       regs->regs[29] = (unsigned long) ka->sa.sa_handler;
> > -       regs->cp0_epc = (unsigned long) ka->sa.sa_handler;
> > +       regs->regs[29] = (unsigned long) ksig->ka.sa.sa_handler;
> > +       regs->cp0_epc = (unsigned long) ksig->ka.sa.sa_handler;
> >
> >          return 0;
> > -
> > -give_sigsegv:
> > -       force_sigsegv(signr, current);
> > -       return -EFAULT;
> >   }
> >
> > -static void handle_signal(unsigned long sig, siginfo_t *info,
> > -       struct k_sigaction *ka, struct pt_regs *regs)
> > +static void handle_signal(struct ksignal *ksig, struct pt_regs *regs)
> >   {
> > +       int ret;
> > +
> >          if (regs->is_syscall) {
> >                  switch (regs->regs[4]) {
> >                  case ERESTART_RESTARTBLOCK:
> > @@ -229,7 +226,7 @@ static void handle_signal(unsigned long sig, siginfo_t *info,
> >                          regs->regs[4] = EINTR;
> >                          break;
> >                  case ERESTARTSYS:
> > -                       if (!(ka->sa.sa_flags & SA_RESTART)) {
> > +                       if (!(ksig->ka.sa.sa_flags & SA_RESTART)) {
> >                                  regs->regs[4] = EINTR;
> >                                  break;
> >                          }
> > @@ -245,17 +242,14 @@ static void handle_signal(unsigned long sig, siginfo_t *info,
> >          /*
> >           * Set up the stack frame
> >           */
> > -       if (setup_rt_frame(ka, regs, sig, sigmask_to_save(), info) < 0)
> > -               return;
> > +       ret = setup_rt_frame(ksig, regs, sigmask_to_save());
> >
> > -       signal_delivered(sig, info, ka, regs, 0);
> > +       signal_setup_done(ret, ksig, 0);
> >   }
> >
> >   static void do_signal(struct pt_regs *regs)
> >   {
> > -       struct k_sigaction ka;
> > -       siginfo_t info;
> > -       int signr;
> > +       struct ksignal ksig;
> >
> >          /*
> >           * We want the common case to go fast, which is why we may in certain
> > @@ -265,10 +259,9 @@ static void do_signal(struct pt_regs *regs)
> >          if (!user_mode(regs))
> >                  return;
> >
> > -       signr = get_signal_to_deliver(&info, &ka, regs, NULL);
> > -       if (signr > 0) {
> > +       if (get_signal(&ksig)) {
> >                  /* Actually deliver the signal.  */
> > -               handle_signal(signr, &info, &ka, regs);
> > +               handle_signal(&ksig, regs);
> >                  return;
> >          }
> >
> > --
> > 1.8.4.5
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