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authorRichard Weinberger <richard@nod.at>2013-09-23 17:38:03 +0200
committerRichard Weinberger <richard@nod.at>2013-11-17 11:27:35 +0100
commita1850e9c7282db1c19a18093a945d5e84bfe7418 (patch)
tree8d9d3eafc0f045e2ff6c4da8108fb731ecfcda94 /arch/um/drivers
parentum: Make stack trace reliable against kernel mode faults (diff)
downloadlinux-a1850e9c7282db1c19a18093a945d5e84bfe7418.tar.xz
linux-a1850e9c7282db1c19a18093a945d5e84bfe7418.zip
um: Get rid of thread_struct->saved_task
As we have a sane show_stack() now, we can drop the ->saved_task hack. Signed-off-by: Richard Weinberger <richard@nod.at>
Diffstat (limited to 'arch/um/drivers')
-rw-r--r--arch/um/drivers/mconsole_kern.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c
index 3df3bd544492..29880c9b324e 100644
--- a/arch/um/drivers/mconsole_kern.c
+++ b/arch/um/drivers/mconsole_kern.c
@@ -645,11 +645,9 @@ void mconsole_sysrq(struct mc_request *req)
static void stack_proc(void *arg)
{
- struct task_struct *from = current, *to = arg;
+ struct task_struct *task = arg;
- to->thread.saved_task = from;
- rcu_user_hooks_switch(from, to);
- switch_to(from, to, from);
+ show_stack(task, NULL);
}
/*