Module: xenomai-head
Branch: master
Commit: 034d6e80ea6304e92b7f8f48477f34e4d99adfa2
URL:
http://git.xenomai.org/?p=xenomai-head.git;a=commit;h=034d6e80ea6304e92b7f8f48477f34e4d99adfa2
Author: Philippe Gerum <r...@xenomai.org>
Date: Sat Jun 27 10:58:01 2009 +0200
x86: remove now useless I/O bitmap switch code
Since 2.6.30, I/O bitmaps are eagerly reinstated in __switch_to(),
and no more handled in a lazy way upon access fault. Remove
the Xenomai bits that used to force update of the I/O bitmap
upon thread switch.
---
include/asm-x86/wrappers_32.h | 9 +--------
1 files changed, 1 insertions(+), 8 deletions(-)
diff --git a/include/asm-x86/wrappers_32.h b/include/asm-x86/wrappers_32.h
index 08ad4a1..d16cf6d 100644
--- a/include/asm-x86/wrappers_32.h
+++ b/include/asm-x86/wrappers_32.h
@@ -139,14 +139,7 @@ static inline void wrap_switch_iobitmap(struct task_struct
*p, int cpu)
static inline void wrap_switch_iobitmap(struct task_struct *p, int cpu)
{
- struct thread_struct *thread = &p->thread;
- struct tss_struct *tss;
-
- if (test_tsk_thread_flag(p, TIF_IO_BITMAP)) {
- tss = &per_cpu(init_tss, cpu);
- memcpy(tss->io_bitmap, thread->io_bitmap_ptr,
- thread->io_bitmap_max);
- } /* NOTE: We don't clear previous leftover io_bitmap in the tss */
+ /* I/O bitmap is eagerly switched in __switch_to() */
}
#endif /* LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,30) */
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