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authorAl Viro <viro@zeniv.linux.org.uk>2012-12-14 15:25:43 -0500
committerAl Viro <viro@zeniv.linux.org.uk>2012-12-19 18:07:42 -0500
commit50ececcfa7d1acee085b2c518cad495062db6379 (patch)
tree3e947b8208e40f34a867be42d0a3908f53844a01 /arch/alpha
parentc40702c49faef05ae324f121d8b3e215244ee152 (diff)
downloadlinux-50ececcfa7d1acee085b2c518cad495062db6379.tar.gz
alpha: switch to generic sigaltstack
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/alpha')
-rw-r--r--arch/alpha/Kconfig1
-rw-r--r--arch/alpha/kernel/signal.c10
2 files changed, 2 insertions, 9 deletions
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index 7e3710c0cce..9d5904cc771 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -22,6 +22,7 @@ config ALPHA
select GENERIC_STRNLEN_USER
select HAVE_MOD_ARCH_SPECIFIC
select MODULES_USE_ELF_RELA
+ select GENERIC_SIGALTSTACK
help
The Alpha is a 64-bit general-purpose processor designed and
marketed by the Digital Equipment Corporation of blessed memory,
diff --git a/arch/alpha/kernel/signal.c b/arch/alpha/kernel/signal.c
index 336393c9c11..02d02c047f1 100644
--- a/arch/alpha/kernel/signal.c
+++ b/arch/alpha/kernel/signal.c
@@ -122,12 +122,6 @@ SYSCALL_DEFINE1(sigsuspend, old_sigset_t, mask)
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.
*/
@@ -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_link);
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 |= __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 |= __save_altstack(&frame->uc.uc_stack, oldsp);
err |= setup_sigcontext(&frame->uc.uc_mcontext, regs,
set->sig[0], oldsp);
err |= __copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set));