Blackfin: add support for restart_syscall() (ddaebcab) · Commits · e / devices / android_kernel_xiaomi_markw

arch/blackfin/kernel/signal.c

+9 −0

Original line number	Diff line number	Diff line
		@@ -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;
		}
		}