Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762106AbZLKAq4 (ORCPT ); Thu, 10 Dec 2009 19:46:56 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1762079AbZLKAqx (ORCPT ); Thu, 10 Dec 2009 19:46:53 -0500 Received: from hera.kernel.org ([140.211.167.34]:35798 "EHLO hera.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933295AbZLKAqs (ORCPT ); Thu, 10 Dec 2009 19:46:48 -0500 Date: Fri, 11 Dec 2009 00:46:35 GMT From: tip-bot for Brian Gerst Cc: linux-kernel@vger.kernel.org, hpa@zytor.com, mingo@redhat.com, brgerst@gmail.com, tglx@linutronix.de Reply-To: mingo@redhat.com, hpa@zytor.com, linux-kernel@vger.kernel.org, brgerst@gmail.com, tglx@linutronix.de In-Reply-To: <1260380084-3707-6-git-send-email-brgerst@gmail.com> References: <1260380084-3707-6-git-send-email-brgerst@gmail.com> To: linux-tip-commits@vger.kernel.org Subject: [tip:x86/asm] x86: Merge kernel_thread() Message-ID: Git-Commit-ID: df59e7bf439918f523ac29e996ec1eebbed60440 X-Mailer: tip-git-log-daemon MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4615 Lines: 163 Commit-ID: df59e7bf439918f523ac29e996ec1eebbed60440 Gitweb: http://git.kernel.org/tip/df59e7bf439918f523ac29e996ec1eebbed60440 Author: Brian Gerst AuthorDate: Wed, 9 Dec 2009 12:34:44 -0500 Committer: H. Peter Anvin CommitDate: Thu, 10 Dec 2009 16:41:31 -0800 x86: Merge kernel_thread() Signed-off-by: Brian Gerst LKML-Reference: <1260380084-3707-6-git-send-email-brgerst@gmail.com> Signed-off-by: H. Peter Anvin --- arch/x86/kernel/process.c | 35 +++++++++++++++++++++++++++++++++++ arch/x86/kernel/process_32.c | 36 ------------------------------------ arch/x86/kernel/process_64.c | 36 ------------------------------------ 3 files changed, 35 insertions(+), 72 deletions(-) diff --git a/arch/x86/kernel/process.c b/arch/x86/kernel/process.c index f3c1a6b..8705cce 100644 --- a/arch/x86/kernel/process.c +++ b/arch/x86/kernel/process.c @@ -243,6 +243,41 @@ sys_clone(unsigned long clone_flags, unsigned long newsp, return do_fork(clone_flags, newsp, regs, 0, parent_tid, child_tid); } +/* + * This gets run with %si containing the + * function to call, and %di containing + * the "args". + */ +extern void kernel_thread_helper(void); + +/* + * Create a kernel thread + */ +int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags) +{ + struct pt_regs regs; + + memset(®s, 0, sizeof(regs)); + + regs.si = (unsigned long) fn; + regs.di = (unsigned long) arg; + +#ifdef CONFIG_X86_32 + regs.ds = __USER_DS; + regs.es = __USER_DS; + regs.fs = __KERNEL_PERCPU; + regs.gs = __KERNEL_STACK_CANARY; +#endif + + regs.orig_ax = -1; + regs.ip = (unsigned long) kernel_thread_helper; + regs.cs = __KERNEL_CS | get_kernel_rpl(); + regs.flags = X86_EFLAGS_IF | 0x2; + + /* Ok, create the new process.. */ + return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, ®s, 0, NULL, NULL); +} +EXPORT_SYMBOL(kernel_thread); /* * sys_execve() executes a new program. diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c index f2e8b05..ccf2342 100644 --- a/arch/x86/kernel/process_32.c +++ b/arch/x86/kernel/process_32.c @@ -192,42 +192,6 @@ void show_regs(struct pt_regs *regs) show_trace(NULL, regs, ®s->sp, regs->bp); } -/* - * This gets run with %si containing the - * function to call, and %di containing - * the "args". - */ -extern void kernel_thread_helper(void); - -/* - * Create a kernel thread - */ -int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags) -{ - struct pt_regs regs; - - memset(®s, 0, sizeof(regs)); - - regs.si = (unsigned long) fn; - regs.di = (unsigned long) arg; - -#ifdef CONFIG_X86_32 - regs.ds = __USER_DS; - regs.es = __USER_DS; - regs.fs = __KERNEL_PERCPU; - regs.gs = __KERNEL_STACK_CANARY; -#endif - - regs.orig_ax = -1; - regs.ip = (unsigned long) kernel_thread_helper; - regs.cs = __KERNEL_CS | get_kernel_rpl(); - regs.flags = X86_EFLAGS_IF | 0x2; - - /* Ok, create the new process.. */ - return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, ®s, 0, NULL, NULL); -} -EXPORT_SYMBOL(kernel_thread); - void release_thread(struct task_struct *dead_task) { BUG_ON(dead_task->mm); diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c index d49a909..1a362c5 100644 --- a/arch/x86/kernel/process_64.c +++ b/arch/x86/kernel/process_64.c @@ -229,42 +229,6 @@ void show_regs(struct pt_regs *regs) show_trace(NULL, regs, (void *)(regs + 1), regs->bp); } -/* - * This gets run with %si containing the - * function to call, and %di containing - * the "args". - */ -extern void kernel_thread_helper(void); - -/* - * Create a kernel thread - */ -int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags) -{ - struct pt_regs regs; - - memset(®s, 0, sizeof(regs)); - - regs.si = (unsigned long) fn; - regs.di = (unsigned long) arg; - -#ifdef CONFIG_X86_32 - regs.ds = __USER_DS; - regs.es = __USER_DS; - regs.fs = __KERNEL_PERCPU; - regs.gs = __KERNEL_STACK_CANARY; -#endif - - regs.orig_ax = -1; - regs.ip = (unsigned long) kernel_thread_helper; - regs.cs = __KERNEL_CS | get_kernel_rpl(); - regs.flags = X86_EFLAGS_IF | 0x2; - - /* Ok, create the new process.. */ - return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, ®s, 0, NULL, NULL); -} -EXPORT_SYMBOL(kernel_thread); - void release_thread(struct task_struct *dead_task) { if (dead_task->mm) { -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/