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authorLinus Torvalds <torvalds@woody.osdl.org>2006-12-07 18:40:39 -0500
committerLinus Torvalds <torvalds@woody.osdl.org>2006-12-07 18:40:39 -0500
commitea14fad0d416354a4e9bb1a04f32acba706f9548 (patch)
tree2c8acc5331f189aef1d40ddce3f40d6be9314e77 /arch/arm/kernel/process.c
parent6ee7e78e7c78d871409ad4df30551c9355be7d0e (diff)
parent6705cda24fad1cb0ac82ac4f312df8ec735b39b0 (diff)
Merge branch 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm
* 'for-linus' of master.kernel.org:/home/rmk/linux-2.6-arm: (76 commits) [ARM] 4002/1: S3C24XX: leave parent IRQs unmasked [ARM] 4001/1: S3C24XX: shorten reboot time [ARM] 3983/2: remove unused argument to __bug() [ARM] 4000/1: Osiris: add third serial port in [ARM] 3999/1: RX3715: suspend to RAM support [ARM] 3998/1: VR1000: LED platform devices [ARM] 3995/1: iop13xx: add iop13xx support [ARM] 3968/1: iop13xx: add iop13xx_defconfig [ARM] Update mach-types [ARM] Allow gcc to optimise arm_add_memory a little more [ARM] 3991/1: i.MX/MX1 high resolution time source [ARM] 3990/1: i.MX/MX1 more precise PLL decode [ARM] 3986/1: H1940: suspend to RAM support [ARM] 3985/1: ixp4xx clocksource cleanup [ARM] 3984/1: ixp4xx/nslu2: Fix disk LED numbering (take 2) [ARM] 3994/1: ixp23xx: fix handling of pci master aborts [ARM] 3981/1: sched_clock for PXA2xx [ARM] 3980/1: extend the ARM Versatile sched_clock implementation from 32 to 63 bit [ARM] 3979/1: extend the SA11x0 sched_clock implementation from 32 to 63 bit period [ARM] 3978/1: macro to provide a 63-bit value from a 32-bit hardware counter ...
Diffstat (limited to 'arch/arm/kernel/process.c')
-rw-r--r--arch/arm/kernel/process.c61
1 files changed, 0 insertions, 61 deletions
diff --git a/arch/arm/kernel/process.c b/arch/arm/kernel/process.c
index bf35c178a877..a9e8f7e55fd6 100644
--- a/arch/arm/kernel/process.c
+++ b/arch/arm/kernel/process.c
@@ -281,67 +281,6 @@ void show_fpregs(struct user_fp *regs)
281} 281}
282 282
283/* 283/*
284 * Task structure and kernel stack allocation.
285 */
286struct thread_info_list {
287 unsigned long *head;
288 unsigned int nr;
289};
290
291static DEFINE_PER_CPU(struct thread_info_list, thread_info_list) = { NULL, 0 };
292
293#define EXTRA_TASK_STRUCT 4
294
295struct thread_info *alloc_thread_info(struct task_struct *task)
296{
297 struct thread_info *thread = NULL;
298
299 if (EXTRA_TASK_STRUCT) {
300 struct thread_info_list *th = &get_cpu_var(thread_info_list);
301 unsigned long *p = th->head;
302
303 if (p) {
304 th->head = (unsigned long *)p[0];
305 th->nr -= 1;
306 }
307 put_cpu_var(thread_info_list);
308
309 thread = (struct thread_info *)p;
310 }
311
312 if (!thread)
313 thread = (struct thread_info *)
314 __get_free_pages(GFP_KERNEL, THREAD_SIZE_ORDER);
315
316#ifdef CONFIG_DEBUG_STACK_USAGE
317 /*
318 * The stack must be cleared if you want SYSRQ-T to
319 * give sensible stack usage information
320 */
321 if (thread)
322 memzero(thread, THREAD_SIZE);
323#endif
324 return thread;
325}
326
327void free_thread_info(struct thread_info *thread)
328{
329 if (EXTRA_TASK_STRUCT) {
330 struct thread_info_list *th = &get_cpu_var(thread_info_list);
331 if (th->nr < EXTRA_TASK_STRUCT) {
332 unsigned long *p = (unsigned long *)thread;
333 p[0] = (unsigned long)th->head;
334 th->head = p;
335 th->nr += 1;
336 put_cpu_var(thread_info_list);
337 return;
338 }
339 put_cpu_var(thread_info_list);
340 }
341 free_pages((unsigned long)thread, THREAD_SIZE_ORDER);
342}
343
344/*
345 * Free current thread data structures etc.. 284 * Free current thread data structures etc..
346 */ 285 */
347void exit_thread(void) 286void exit_thread(void)