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Message-ID: <957BD1C2BF3CD411B6C500A0C944CA260216C261@pdsmsx32.pd.intel.com>
From: "Hu, Boris" <boris.hu@intel.com>
To: "Linux Kernel ML (E-mail)" <linux-kernel@vger.kernel.org>,
       "NPTL list (E-mail)" <phil-list@redhat.com>
Subject: problem about CLONE_PARENT_SETTID | CLONE_CHILD_CLEARTID ?
Date: Wed, 11 Dec 2002 02:49:56 +0800
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When I read create_thread() in NPTL source code, it passes
CLONE_PARENT_SETTID 
| CLONE_CHILD_CLEARTID to sys_clone(). However, in arch/arm/kernel/sys_arm.c

(sys_clone) [kernel 2.5.49]
256         if (clone_flags & (CLONE_PARENT_SETTID | CLONE_CHILD_CLEARTID))
257                 return -EINVAL;

 I have searched CLONE_PARENT_SETTID in kernel, it seems only to appear in 
some non-architecture files, such as /include/linux/sched.h and several arch
files,
 but they do little about wrapping.  Why ARM can't support 
(CLONE_PARENT_SETTID | CLONE_CHILD_CLEARTID)? 

any comments? thanks a lot. 

  Boris
=========================
To know what I don't know
To learn what I don't know
To contribute what I know
=========================



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