[PATCH] ia64: add missing syscall trace clear

From: Akiyama, Nobuyuki <akiyama.nobuyuk_at_jp.fujitsu.com>
Date: 2007-02-23 00:50:38

The ptrace misses clearing the syscall trace flag.
The increased syscall overhead is retained after the trace is finished.
This case happens when strace is terminated by force.


Signed-off-by: Akiyama, Nobuyuki <akiyama.nobuyuk@jp.fujitsu.com>

diff -Nurp linux-2.6.21-rc1.orig/arch/ia64/kernel/ptrace.c linux-2.6.21-rc1.mod/arch/ia64/kernel/ptrace.c
--- linux-2.6.21-rc1.orig/arch/ia64/kernel/ptrace.c	2007-02-22 17:15:38.000000000 +0900
+++ linux-2.6.21-rc1.mod/arch/ia64/kernel/ptrace.c	2007-02-22 22:12:50.000000000 +0900
@@ -1573,6 +1573,7 @@ sys_ptrace (long request, pid_t pid, uns
 	      case PTRACE_DETACH:
 		/* detach a process that was attached. */
+		clear_tsk_thread_flag(child, TIF_SYSCALL_TRACE);
 		ret = ptrace_detach(child, data);
 		goto out_tsk;

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Received on Fri Feb 23 00:52:38 2007

This archive was generated by hypermail 2.1.8 : 2007-02-23 00:52:57 EST