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authorMike Frysinger <vapier@gentoo.org>2010-01-29 01:33:54 +0000
committerMike Frysinger <vapier@gentoo.org>2010-03-09 00:30:51 -0500
commitddaebcabbc18811ac4ac6e84fb9c327e8393a1dc (patch)
tree1fef12d7d009245a006a94b17bb1bd0c0a4404ff /arch/blackfin
parent9e228ee9eae97b533d3b3133f76478c70dbd4294 (diff)
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Blackfin: add support for restart_syscall()
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Diffstat (limited to 'arch/blackfin')
-rw-r--r--arch/blackfin/kernel/signal.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/blackfin/kernel/signal.c b/arch/blackfin/kernel/signal.c
index 28d6f28c058c..d536f35d1f43 100644
--- a/arch/blackfin/kernel/signal.c
+++ b/arch/blackfin/kernel/signal.c
@@ -17,6 +17,7 @@
#include <asm/cacheflush.h>
#include <asm/ucontext.h>
#include <asm/fixed_code.h>
+#include <asm/syscall.h>
#define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
@@ -50,6 +51,9 @@ rt_restore_sigcontext(struct pt_regs *regs, struct sigcontext __user *sc, int *p
unsigned long usp = 0;
int err = 0;
+ /* Always make any pending restarted system calls return -EINTR */
+ current_thread_info()->restart_block.fn = do_no_restart_syscall;
+
#define RESTORE(x) err |= __get_user(regs->x, &sc->sc_##x)
/* restore passed registers */
@@ -237,6 +241,11 @@ handle_restart(struct pt_regs *regs, struct k_sigaction *ka, int has_handler)
regs->r0 = regs->orig_r0;
regs->pc -= 2;
break;
+
+ case -ERESTART_RESTARTBLOCK:
+ regs->p0 = __NR_restart_syscall;
+ regs->pc -= 2;
+ break;
}
}