Module: xenomai-3
Branch: next
Commit: f6e5114e7b788f52152ac7d09fa54be11e345440
URL:
http://git.xenomai.org/?p=xenomai-3.git;a=commit;h=f6e5114e7b788f52152ac7d09fa54be11e345440
Author: Philippe Gerum <r...@xenomai.org>
Date: Thu Sep 8 16:29:38 2016 +0200
cobalt/x86: fpu: drop obsolete xnarch_save_fpu()
---
kernel/cobalt/arch/x86/include/asm/xenomai/thread.h | 2 --
kernel/cobalt/arch/x86/thread.c | 17 -----------------
2 files changed, 19 deletions(-)
diff --git a/kernel/cobalt/arch/x86/include/asm/xenomai/thread.h
b/kernel/cobalt/arch/x86/include/asm/xenomai/thread.h
index 3862e33..bd39f5a 100644
--- a/kernel/cobalt/arch/x86/include/asm/xenomai/thread.h
+++ b/kernel/cobalt/arch/x86/include/asm/xenomai/thread.h
@@ -59,8 +59,6 @@ static inline int xnarch_shadow_p(struct xnarchtcb *tcb,
struct task_struct *tas
((d)->exception == 1 || (d)->exception == 3))
#define xnarch_fault_notify(d) (!xnarch_fault_bp_p(d))
-void xnarch_save_fpu(struct xnthread *thread);
-
void xnarch_switch_fpu(struct xnthread *from, struct xnthread *to);
int xnarch_handle_fpu_fault(struct xnthread *from,
diff --git a/kernel/cobalt/arch/x86/thread.c b/kernel/cobalt/arch/x86/thread.c
index d367d13..0383f00 100644
--- a/kernel/cobalt/arch/x86/thread.c
+++ b/kernel/cobalt/arch/x86/thread.c
@@ -289,8 +289,6 @@ int xnarch_handle_fpu_fault(struct xnthread *from,
/*
* The faulting task is a shadow using the FPU for the first
* time, initialize the FPU context and tell linux about it.
- * The fpu usage bit is necessary for xnarch_save_fpu() to
- * save the FPU state at next switch.
*/
__asm__ __volatile__("clts; fninit");
@@ -346,21 +344,6 @@ void xnarch_leave_root(struct xnthread *root)
kernel_fpu_enable();
}
-void xnarch_save_fpu(struct xnthread *thread)
-{
- struct xnarchtcb *tcb = xnthread_archtcb(thread);
- struct task_struct *p = tcb->core.host_task;
-
- if (__thread_has_fpu(p) == 0)
- /* Saved by last __switch_to */
- return;
-
- clts();
-
- __do_save_i387(x86_fpustate_ptr(&p->thread));
- __thread_clear_has_fpu(p);
-}
-
void xnarch_switch_fpu(struct xnthread *from, struct xnthread *to)
{
x86_fpustate *const from_fpup = from ? from->tcb.fpup : NULL;
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