linux-next: build failure after merge of the rcu tree

Stephen Rothwell
2019-08-12T06:12:42Z

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Hi all,

After merging the rcu tree, today's linux-next build (x86_64 allmodconfig)
failed like this:

arch/x86/xen/smp_pv.c: In function 'xen_pv_play_dead':
arch/x86/xen/smp_pv.c:439:2: error: implicit declaration of function 'tick_nohz_idle_stop_tick_protected'; did you mean 'tick_nohz_idle_stop_tick'? [-Werror=implicit-function-declaration]
tick_nohz_idle_stop_tick_protected();
^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
tick_nohz_idle_stop_tick

Caused by commit

a96f9dca9820 ("idle: Prevent late-arriving interrupts from disrupting offline")

Also:

In file included from <command-line>:
include/linux/rcu_segcblist.h:69:2: error: unknown type name 'atomic_long_t'
atomic_long_t len;
^~~~~~~~~~~~~
include/linux/rcu_segcblist.h:74:2: error: unknown type name 'u8'
u8 enabled;
^~
include/linux/rcu_segcblist.h:75:2: error: unknown type name 'u8'
u8 offloaded;
^~

Caused by commits:

e084617762b7 ("rcu/nocb: Use separate flag to indicate disabled ->cblist")
5e114ba3d7a5 ("rcu/nocb: Use separate flag to indicate offloaded ->cblist")
9f3ca0945104 ("rcu/nocb: Atomic ->len field in rcu_segcblist structure")

We prefer our include files to be standalone now if at all possible.

I have used the rcu tree from next-20190809 for today.

--
Cheers,
Stephen Rothwell

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