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authorKarol Swietlicki <magotari@gmail.com>2008-02-04 22:30:49 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-05 09:44:26 -0800
commit291248fd6e371bcbfb8a77689c5d741a1527488f (patch)
tree249acacdd2ca8d8194415f22930b4b5bccc59d32 /arch/um/kernel/process.c
parentab8cda4347e2ffed658e522c9398932509c278bd (diff)
uml: remove unused variables in the context switcher
This patch removes a variable which was not used in two functions. Yet another code cleanup, nothing really significant. Please note that I could not test this on x86_64. I don't have the hardware for it. [ jdike - Bits of tidying around the affected code. Also, it's fine on x86_64 ] Signed-off-by: Karol Swietlicki <magotari@gmail.com> Signed-off-by: Jeff Dike <jdike@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/um/kernel/process.c')
-rw-r--r--arch/um/kernel/process.c19
1 files changed, 8 insertions, 11 deletions
diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index 91bd68eaba20..62a4e0e12c9c 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -81,12 +81,12 @@ static inline void set_current(struct task_struct *task)
{ external_pid(task), task });
}
-extern void arch_switch_to(struct task_struct *from, struct task_struct *to);
+extern void arch_switch_to(struct task_struct *to);
void *_switch_to(void *prev, void *next, void *last)
{
struct task_struct *from = prev;
- struct task_struct *to= next;
+ struct task_struct *to = next;
to->thread.prev_sched = from;
set_current(to);
@@ -94,16 +94,15 @@ void *_switch_to(void *prev, void *next, void *last)
do {
current->thread.saved_task = NULL;
- switch_threads(&from->thread.switch_buf,
- &to->thread.switch_buf);
+ switch_threads(&from->thread.switch_buf, &to->thread.switch_buf);
- arch_switch_to(current->thread.prev_sched, current);
+ arch_switch_to(current);
if (current->thread.saved_task)
show_regs(&(current->thread.regs));
- next= current->thread.saved_task;
- prev= current;
- } while(current->thread.saved_task);
+ next = current->thread.saved_task;
+ prev = current;
+ } while (current->thread.saved_task);
return current->thread.prev_sched;
@@ -161,8 +160,6 @@ void new_thread_handler(void)
void fork_handler(void)
{
force_flush_all();
- if (current->thread.prev_sched == NULL)
- panic("blech");
schedule_tail(current->thread.prev_sched);
@@ -171,7 +168,7 @@ void fork_handler(void)
* arch_switch_to isn't needed. We could want to apply this to
* improve performance. -bb
*/
- arch_switch_to(current->thread.prev_sched, current);
+ arch_switch_to(current);
current->thread.prev_sched = NULL;