linux-kernel - [PATCH 11/27] x86-64: ptrace generic resume

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Message-Id: <20071125220119.880F126F8DE@magilla.localdomain>
Date:	Sun, 25 Nov 2007 14:01:19 -0800 (PST)
From:	Roland McGrath <roland@...hat.com>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...e.hu>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: [PATCH 11/27] x86-64: ptrace generic resume


This removes the handling for PTRACE_CONT et al from the 64-bit
ptrace code, so it uses the new generic code via ptrace_request.

Signed-off-by: Roland McGrath <roland@...hat.com>
---
 arch/x86/kernel/ptrace_64.c |   45 -------------------------------------------
 1 files changed, 0 insertions(+), 45 deletions(-)

diff --git a/arch/x86/kernel/ptrace_64.c b/arch/x86/kernel/ptrace_64.c
index d8453da..85fba7b 100644
--- a/arch/x86/kernel/ptrace_64.c
+++ b/arch/x86/kernel/ptrace_64.c
@@ -334,23 +334,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 		}
 		break;
 	}
-	case PTRACE_SYSCALL: /* continue and stop at next (return from) syscall */
-	case PTRACE_CONT:    /* restart after signal. */
-
-		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);
-		clear_tsk_thread_flag(child, TIF_SINGLESTEP);
-		child->exit_code = data;
-		/* make sure the single step bit is not set. */
-		user_disable_single_step(child);
-		wake_up_process(child);
-		ret = 0;
-		break;
 
 #ifdef CONFIG_IA32_EMULATION
 		/* This makes only sense with 32bit programs. Allow a
@@ -378,34 +361,6 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
 		ret = do_arch_prctl(child, data, addr);
 		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;
-		clear_tsk_thread_flag(child, TIF_SINGLESTEP);
-		child->exit_code = SIGKILL;
-		/* make sure the single step bit is not set. */
-		user_disable_single_step(child);
-		wake_up_process(child);
-		break;
-
-	case PTRACE_SINGLESTEP:    /* set the trap flag. */
-		ret = -EIO;
-		if (!valid_signal(data))
-			break;
-		clear_tsk_thread_flag(child,TIF_SYSCALL_TRACE);
-		user_enable_single_step(child);
-		child->exit_code = data;
-		/* give it a chance to run. */
-		wake_up_process(child);
-		ret = 0;
-		break;
-
 	case PTRACE_GETREGS: { /* Get all gp regs from the child. */
 	  	if (!access_ok(VERIFY_WRITE, (unsigned __user *)data,
 			       sizeof(struct user_regs_struct))) {
-
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