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linux-sg2042
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alpha: switch to generic sigaltstack 

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro 2012-12-14 15:25:43 -05:00
parent c40702c49f
commit 50ececcfa7
2 changed files with 2 additions and 9 deletions
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1
arch/alpha/Kconfig
View File

@ -22,6 +22,7 @@ config ALPHA
select GENERIC_STRNLEN_USER select GENERIC_STRNLEN_USER
select HAVE_MOD_ARCH_SPECIFIC select HAVE_MOD_ARCH_SPECIFIC
select MODULES_USE_ELF_RELA select MODULES_USE_ELF_RELA
select GENERIC_SIGALTSTACK
help help
The Alpha is a 64-bit general-purpose processor designed and The Alpha is a 64-bit general-purpose processor designed and
marketed by the Digital Equipment Corporation of blessed memory, marketed by the Digital Equipment Corporation of blessed memory,

10
arch/alpha/kernel/signal.c
View File

@ -122,12 +122,6 @@ SYSCALL_DEFINE1(sigsuspend, old_sigset_t, mask)
return sigsuspend(&blocked); return sigsuspend(&blocked);
} }
asmlinkage int
sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss)
{
return do_sigaltstack(uss, uoss, rdusp());
}
/* /*
* Do a signal return; undo the signal stack. * Do a signal return; undo the signal stack.
*/ */
@ -418,9 +412,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t *info,
err |= __put_user(0, &frame->uc.uc_flags); err |= __put_user(0, &frame->uc.uc_flags);
err |= __put_user(0, &frame->uc.uc_link); err |= __put_user(0, &frame->uc.uc_link);
err |= __put_user(set->sig[0], &frame->uc.uc_osf_sigmask); err |= __put_user(set->sig[0], &frame->uc.uc_osf_sigmask);
err |= __put_user(current->sas_ss_sp, &frame->uc.uc_stack.ss_sp); err |= __save_altstack(&frame->uc.uc_stack, oldsp);
err |= __put_user(sas_ss_flags(oldsp), &frame->uc.uc_stack.ss_flags);
err |= __put_user(current->sas_ss_size, &frame->uc.uc_stack.ss_size);
err |= setup_sigcontext(&frame->uc.uc_mcontext, regs, err |= setup_sigcontext(&frame->uc.uc_mcontext, regs,
set->sig[0], oldsp); set->sig[0], oldsp);
err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));