From: Christoph Hellwig <hch@xxxxxx> Use the generic ptrace_resume code for PTRACE_SYSCALL, PTRACE_CONT, PTRACE_KILL and PTRACE_SINGLESTEP. This implies defining arch_has_single_step in <asm/ptrace.h> and implementing the user_enable_single_step and user_disable_single_step functions, which also causes the breakpoint information to be cleared on fork, which could be considered a bug fix. Also the TIF_SYSCALL_TRACE thread flag is now cleared on PTRACE_KILL which it previously wasn't which is consistent with all architectures using the modern ptrace code. Signed-off-by: Christoph Hellwig <hch@xxxxxx> Signed-off-by: Mike Frysinger <vapier@xxxxxxxxxx> --- arch/blackfin/kernel/ptrace.c | 44 ----------------------------------------- 1 files changed, 0 insertions(+), 44 deletions(-) diff --git a/arch/blackfin/kernel/ptrace.c b/arch/blackfin/kernel/ptrace.c index f6e94ad..09fb04e 100644 --- a/arch/blackfin/kernel/ptrace.c +++ b/arch/blackfin/kernel/ptrace.c @@ -330,50 +330,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) ret = put_reg(child, addr, data); break; - case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */ - case PTRACE_CONT: /* restart after signal. */ - pr_debug("ptrace: syscall/cont\n"); - - ret = -EIO; - if (!valid_signal(data)) - break; - if (request == PTRACE_SYSCALL) - set_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - else - clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - child->exit_code = data; - user_disable_single_step(child); - pr_debug("ptrace: before wake_up_process\n"); - wake_up_process(child); - ret = 0; - break; - - /* - * make the child exit. Best I can do is send it a sigkill. - * perhaps it should be put in the status that it wants to - * exit. - */ - case PTRACE_KILL: - ret = 0; - if (child->exit_state == EXIT_ZOMBIE) /* already dead */ - break; - child->exit_code = SIGKILL; - user_disable_single_step(child); - wake_up_process(child); - break; - - case PTRACE_SINGLESTEP: /* set the trap flag. */ - pr_debug("ptrace: single step\n"); - ret = -EIO; - if (!valid_signal(data)) - break; - clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE); - user_enable_single_step(child); - child->exit_code = data; - wake_up_process(child); - ret = 0; - break; - case PTRACE_GETREGS: /* Get all gp regs from the child. */ ret = ptrace_getregs(child, datap); -- 1.6.6.1 -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html