From 54d8d3b5a0ce1cdbad1d3154c9ea9732d394e9c7 Mon Sep 17 00:00:00 2001 From: Paolo 'Blaisorblade' Giarrusso Date: Fri, 31 Mar 2006 02:30:24 -0800 Subject: [PATCH] uml: add arch_switch_to for newly forked thread Newly forked threads have no arch_switch_to_skas() called before their first run, because when schedule() switches to them they're resumed in the body of thread_wait() inside fork_handler() rather than in switch_threads() in switch_to_skas(). Compensate this missing call. Signed-off-by: Paolo 'Blaisorblade' Giarrusso Acked-by: Jeff Dike Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- arch/um/kernel/skas/process_kern.c | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'arch/um/kernel/skas/process_kern.c') diff --git a/arch/um/kernel/skas/process_kern.c b/arch/um/kernel/skas/process_kern.c index 38b185370c4..2135eaf98a9 100644 --- a/arch/um/kernel/skas/process_kern.c +++ b/arch/um/kernel/skas/process_kern.c @@ -91,10 +91,17 @@ void fork_handler(int sig) panic("blech"); schedule_tail(current->thread.prev_sched); + + /* XXX: if interrupt_end() calls schedule, this call to + * arch_switch_to_skas isn't needed. We could want to apply this to + * improve performance. -bb */ + arch_switch_to_skas(current->thread.prev_sched, current); + current->thread.prev_sched = NULL; /* Handle any immediate reschedules or signals */ interrupt_end(); + userspace(¤t->thread.regs.regs); } -- cgit v1.2.3