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Date: Thu, 21 Apr 2022 14:43:06 +0800
From: kernel test robot <lkp@...el.com>
To: Ingo Molnar <mingo@...nel.org>
Cc: llvm@...ts.linux.dev, kbuild-all@...ts.01.org,
linux-kernel@...r.kernel.org
Subject: [mingo-tip:sched/headers 1820/2579] kernel/signal.c:190:6: error:
implicit declaration of function 'cgroup_task_frozen' is invalid in C99
tree: git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git sched/headers
head: 49e1ec6c70a6eb4b7de9250a455b8b63eb42afbe
commit: ec8ca2d8ef76b4edd4dc7e12899b5ff5e64657a5 [1820/2579] headers/deps: cgroups: Remove the <linux/cgroup_api.h> header from the default <linux/cgroup.h> header
config: mips-randconfig-r026-20220419 (https://download.01.org/0day-ci/archive/20220421/202204210613.DeyJT7kn-lkp@intel.com/config)
compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project c1c49a356162b22554088d269f7689bdb044a9f1)
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# install mips cross compiling tool for clang build
# apt-get install binutils-mips-linux-gnu
# https://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git/commit/?id=ec8ca2d8ef76b4edd4dc7e12899b5ff5e64657a5
git remote add mingo-tip git://git.kernel.org/pub/scm/linux/kernel/git/mingo/tip.git
git fetch --no-tags mingo-tip sched/headers
git checkout ec8ca2d8ef76b4edd4dc7e12899b5ff5e64657a5
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
>> kernel/signal.c:190:6: error: implicit declaration of function 'cgroup_task_frozen' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
cgroup_task_frozen(t)) {
^
>> kernel/signal.c:2325:3: error: implicit declaration of function 'cgroup_enter_frozen' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
cgroup_enter_frozen();
^
>> kernel/signal.c:2328:3: error: implicit declaration of function 'cgroup_leave_frozen' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
cgroup_leave_frozen(true);
^
kernel/signal.c:2328:3: note: did you mean 'cgroup_enter_frozen'?
kernel/signal.c:2325:3: note: 'cgroup_enter_frozen' declared here
cgroup_enter_frozen();
^
kernel/signal.c:2516:3: error: implicit declaration of function 'cgroup_enter_frozen' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
cgroup_enter_frozen();
^
kernel/signal.c:2595:2: error: implicit declaration of function 'cgroup_enter_frozen' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
cgroup_enter_frozen();
^
kernel/signal.c:2763:16: error: implicit declaration of function 'cgroup_task_frozen' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
if (unlikely(cgroup_task_frozen(current))) {
^
kernel/signal.c:2765:4: error: implicit declaration of function 'cgroup_leave_frozen' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
cgroup_leave_frozen(false);
^
kernel/signal.c:2865:4: error: implicit declaration of function 'cgroup_leave_frozen' is invalid in C99 [-Werror,-Wimplicit-function-declaration]
cgroup_leave_frozen(true);
^
8 errors generated.
vim +/cgroup_task_frozen +190 kernel/signal.c
^1da177e4c3f41 Linus Torvalds 2005-04-16 184
09ae854edb2d27 Christian Brauner 2018-08-21 185 static bool recalc_sigpending_tsk(struct task_struct *t)
^1da177e4c3f41 Linus Torvalds 2005-04-16 186 {
76f969e8948d82 Roman Gushchin 2019-04-19 187 if ((t->jobctl & (JOBCTL_PENDING_MASK | JOBCTL_TRAP_FREEZE)) ||
6616e4593f1b57 Ingo Molnar 2022-01-28 188 PENDING(&per_task(t, pending), &per_task(t, blocked)) ||
ec2f4babb822f7 Ingo Molnar 2022-01-28 189 PENDING(&t->signal->shared_pending, &per_task(t, blocked)) ||
76f969e8948d82 Roman Gushchin 2019-04-19 @190 cgroup_task_frozen(t)) {
^1da177e4c3f41 Linus Torvalds 2005-04-16 191 set_tsk_thread_flag(t, TIF_SIGPENDING);
09ae854edb2d27 Christian Brauner 2018-08-21 192 return true;
7bb44adef39ad3 Roland McGrath 2007-05-23 193 }
09ae854edb2d27 Christian Brauner 2018-08-21 194
b74d0deb968e1f Roland McGrath 2007-06-06 195 /*
b74d0deb968e1f Roland McGrath 2007-06-06 196 * We must never clear the flag in another thread, or in current
b74d0deb968e1f Roland McGrath 2007-06-06 197 * when it's possible the current syscall is returning -ERESTART*.
b74d0deb968e1f Roland McGrath 2007-06-06 198 * So we don't clear it here, and only callers who know they should do.
b74d0deb968e1f Roland McGrath 2007-06-06 199 */
09ae854edb2d27 Christian Brauner 2018-08-21 200 return false;
7bb44adef39ad3 Roland McGrath 2007-05-23 201 }
7bb44adef39ad3 Roland McGrath 2007-05-23 202
:::::: The code at line 190 was first introduced by commit
:::::: 76f969e8948d82e78e1bc4beb6b9465908e74873 cgroup: cgroup v2 freezer
:::::: TO: Roman Gushchin <guro@...com>
:::::: CC: Tejun Heo <tj@...nel.org>
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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