Hi Frederic,
FYI, kernel build failed on
tree: git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git dev.2012.10.08a
head: 39083e8d47ddbc78412249d01c1ed63d7fd14c50
commit: 13ec2e2650c8f82380178ad0b1b29a5d5c3ea557 [17/21] rcu: Remove rcu_switch()
config: um-defconfig
All error/warnings:
arch/um/drivers/mconsole_kern.c: In function 'stack_proc':
arch/um/drivers/mconsole_kern.c:708:2: error: implicit declaration of function 'rcu_switch' [-Werror=implicit-function-declaration]
cc1: some warnings being treated as errors
vim +708 arch/um/drivers/mconsole_kern.c
4111b025 Jeff Dike 2006-01-06 702
6f517d3f Jeff Dike 2006-01-06 703 static void stack_proc(void *arg)
6f517d3f Jeff Dike 2006-01-06 704 {
6f517d3f Jeff Dike 2006-01-06 705 struct task_struct *from = current, *to = arg;
6f517d3f Jeff Dike 2006-01-06 706
6f517d3f Jeff Dike 2006-01-06 707 to->thread.saved_task = from;
04e7e951 Frederic Weisbecker 2012-07-16 @708 rcu_switch(from, to);
6f517d3f Jeff Dike 2006-01-06 709 switch_to(from, to, from);
6f517d3f Jeff Dike 2006-01-06 710 }
6f517d3f Jeff Dike 2006-01-06 711
The code at line 708 was first introduced by commit:
04e7e95 rcu: Switch task's syscall hooks on context switch
---
0-DAY kernel build testing backend Open Source Technology Center
Fengguang Wu, Yuanhan Liu Intel Corporation
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