diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-12-23 02:03:02 -0500 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2013-02-03 18:15:51 -0500 |
| commit | 79d432103c6dc4ed46adc8e1f53d34e8ba7089c0 (patch) | |
| tree | 3b2d49c98ba809621b17a881828ee3e58966bf93 | |
| parent | 0aa0203fb43f04714004b2c4ad33b858e240555d (diff) | |
blackfin: switch to generic sigaltstack
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
| -rw-r--r-- | arch/blackfin/Kconfig | 1 | ||||
| -rw-r--r-- | arch/blackfin/kernel/signal.c | 12 |
2 files changed, 3 insertions, 10 deletions
diff --git a/arch/blackfin/Kconfig b/arch/blackfin/Kconfig index b6f3ad5441c..a8a9ca7d40f 100644 --- a/arch/blackfin/Kconfig +++ b/arch/blackfin/Kconfig @@ -45,6 +45,7 @@ config BLACKFIN select ARCH_USES_GETTIMEOFFSET if !GENERIC_CLOCKEVENTS select HAVE_MOD_ARCH_SPECIFIC select MODULES_USE_ELF_RELA + select GENERIC_SIGALTSTACK config GENERIC_CSUM def_bool y diff --git a/arch/blackfin/kernel/signal.c b/arch/blackfin/kernel/signal.c index 84b4be05840..b022af6c48f 100644 --- a/arch/blackfin/kernel/signal.c +++ b/arch/blackfin/kernel/signal.c @@ -37,11 +37,6 @@ struct rt_sigframe { struct ucontext uc; }; -asmlinkage int sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss) -{ - return do_sigaltstack(uss, uoss, rdusp()); -} - static inline int rt_restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, int *pr0) { @@ -100,7 +95,7 @@ asmlinkage int sys_rt_sigreturn(void) if (rt_restore_sigcontext(regs, &frame->uc.uc_mcontext, &r0)) goto badframe; - if (do_sigaltstack(&frame->uc.uc_stack, NULL, regs->usp) == -EFAULT) + if (restore_altstack(&frame->uc.uc_stack)) goto badframe; return r0; @@ -178,10 +173,7 @@ setup_rt_frame(int sig, struct k_sigaction *ka, siginfo_t * info, /* Create the ucontext. */ err |= __put_user(0, &frame->uc.uc_flags); err |= __put_user(0, &frame->uc.uc_link); - err |= - __put_user((void *)current->sas_ss_sp, &frame->uc.uc_stack.ss_sp); - err |= __put_user(sas_ss_flags(rdusp()), &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, rdusp()); err |= rt_setup_sigcontext(&frame->uc.uc_mcontext, regs); err |= copy_to_user(&frame->uc.uc_sigmask, set, sizeof(*set)); |