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

From: Lennox Wu
Date: Sat Aug 02 2014 - 02:42:00 EST


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

Best,
Lennox

Lennox Wu æ 2014/7/21 äå 10:47 åé:
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

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/