linux-kernel - [patch 1/14] x86, ptrace: add arch_ptrace_report

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Date:	Fri, 27 Mar 2009 09:46:26 +0100
From:	Markus Metzger <markus.t.metzger@...el.com>
To:	linux-kernel@...r.kernel.org, mingo@...e.hu, tglx@...utronix.de,
	hpa@...or.com
Cc:	markus.t.metzger@...el.com, markus.t.metzger@...il.com,
	roland@...hat.com, eranian@...glemail.com, oleg@...hat.com,
	juan.villacis@...el.com, ak@...ux.jf.intel.com
Subject: [patch 1/14] x86, ptrace: add arch_ptrace_report_exit

Add an arch_ variant to report a task exit.
Move the ptrace report exit code from tracehook.h to ptrace.h.


Signed-off-by: Markus Metzger <markus.t.metzger@...el.com>
---

Index: git-tip/include/linux/ptrace.h
===================================================================
--- git-tip.orig/include/linux/ptrace.h	2009-03-23 10:45:30.000000000 +0100
+++ git-tip/include/linux/ptrace.h	2009-03-23 11:31:21.000000000 +0100
@@ -335,6 +335,23 @@ static inline void user_enable_block_ste
 #define arch_ptrace_fork(child, clone_flags)	do { } while (0)
 #endif
 
+#ifndef arch_ptrace_report_exit
+/**
+ * arch_ptrace_report_exit - Do machine specific work for exiting ptraced tasks
+ * @exit_code:	current->exit_code value
+ *
+ * This is called early from do_exit() with no locks held after we notified the
+ * ptracer.
+ */
+#define arch_ptrace_report_exit(exit_code)	do { } while (0)
+#endif
+
+static inline void ptrace_report_exit(long *exit_code)
+{
+	ptrace_event(PT_TRACE_EXIT, PTRACE_EVENT_EXIT, *exit_code);
+	arch_ptrace_report_exit(*exit_code);
+}
+
 extern int task_current_syscall(struct task_struct *target, long *callno,
 				unsigned long args[6], unsigned int maxargs,
 				unsigned long *sp, unsigned long *pc);
Index: git-tip/include/linux/tracehook.h
===================================================================
--- git-tip.orig/include/linux/tracehook.h	2009-03-23 10:45:30.000000000 +0100
+++ git-tip/include/linux/tracehook.h	2009-03-23 11:31:21.000000000 +0100
@@ -211,7 +211,7 @@ static inline void tracehook_report_exec
  */
 static inline void tracehook_report_exit(long *exit_code)
 {
-	ptrace_event(PT_TRACE_EXIT, PTRACE_EVENT_EXIT, *exit_code);
+	ptrace_report_exit(exit_code);
 }
 
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