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authorBrian Gerst <brgerst@gmail.com>2009-12-09 12:34:44 -0500
committerH. Peter Anvin <hpa@zytor.com>2009-12-10 19:41:31 -0500
commitdf59e7bf439918f523ac29e996ec1eebbed60440 (patch)
treea847eb0b7f0e3fe34a717999db0d441e7f7e7bd6 /arch/x86/kernel/process_32.c
parentf443ff4201dd25cd4dec183f9919ecba90c8edc2 (diff)
x86: Merge kernel_thread()
Signed-off-by: Brian Gerst <brgerst@gmail.com> LKML-Reference: <1260380084-3707-6-git-send-email-brgerst@gmail.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Diffstat (limited to 'arch/x86/kernel/process_32.c')
-rw-r--r--arch/x86/kernel/process_32.c36
1 files changed, 0 insertions, 36 deletions
diff --git a/arch/x86/kernel/process_32.c b/arch/x86/kernel/process_32.c
index f2e8b05a4f02..ccf234266a2e 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)
192 show_trace(NULL, regs, &regs->sp, regs->bp); 192 show_trace(NULL, regs, &regs->sp, regs->bp);
193} 193}
194 194
195/*
196 * This gets run with %si containing the
197 * function to call, and %di containing
198 * the "args".
199 */
200extern void kernel_thread_helper(void);
201
202/*
203 * Create a kernel thread
204 */
205int kernel_thread(int (*fn)(void *), void *arg, unsigned long flags)
206{
207 struct pt_regs regs;
208
209 memset(&regs, 0, sizeof(regs));
210
211 regs.si = (unsigned long) fn;
212 regs.di = (unsigned long) arg;
213
214#ifdef CONFIG_X86_32
215 regs.ds = __USER_DS;
216 regs.es = __USER_DS;
217 regs.fs = __KERNEL_PERCPU;
218 regs.gs = __KERNEL_STACK_CANARY;
219#endif
220
221 regs.orig_ax = -1;
222 regs.ip = (unsigned long) kernel_thread_helper;
223 regs.cs = __KERNEL_CS | get_kernel_rpl();
224 regs.flags = X86_EFLAGS_IF | 0x2;
225
226 /* Ok, create the new process.. */
227 return do_fork(flags | CLONE_VM | CLONE_UNTRACED, 0, &regs, 0, NULL, NULL);
228}
229EXPORT_SYMBOL(kernel_thread);
230
231void release_thread(struct task_struct *dead_task) 195void release_thread(struct task_struct *dead_task)
232{ 196{
233 BUG_ON(dead_task->mm); 197 BUG_ON(dead_task->mm);