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* [paulmck-rcu:rcu/next 27/33] kernel/rcu/tree.c:1180:19: warning: variable 'rnp' set but not used
@ 2021-12-14  3:35 kernel test robot
  2021-12-14 23:19 ` Paul E. McKenney
  0 siblings, 1 reply; 3+ messages in thread
From: kernel test robot @ 2021-12-14  3:35 UTC (permalink / raw)
  To: Paul E. McKenney; +Cc: kbuild-all, linux-kernel

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/next
head:   a4b57ded94e522e2870ae9504f776caa0f615148
commit: ee418df93691657d27f6118d1ff8f681c52f4aa3 [27/33] rcu: Create and use a rcu_rdp_cpu_online()
config: i386-randconfig-s001-20211213 (https://download.01.org/0day-ci/archive/20211214/202112141117.jFtY2VyL-lkp@intel.com/config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git/commit/?id=ee418df93691657d27f6118d1ff8f681c52f4aa3
        git remote add paulmck-rcu https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git
        git fetch --no-tags paulmck-rcu rcu/next
        git checkout ee418df93691657d27f6118d1ff8f681c52f4aa3
        # save the config file to linux build tree
        mkdir build_dir
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash kernel/rcu/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   kernel/rcu/tree.c: In function 'rcu_lockdep_current_cpu_online':
>> kernel/rcu/tree.c:1180:19: warning: variable 'rnp' set but not used [-Wunused-but-set-variable]
    1180 |  struct rcu_node *rnp;
         |                   ^~~


vim +/rnp +1180 kernel/rcu/tree.c

c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1163  
c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1164  /*
5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1165   * Is the current CPU online as far as RCU is concerned?
2036d94a7b61ca kernel/rcutree.c  Paul E. McKenney 2012-01-30  1166   *
5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1167   * Disable preemption to avoid false positives that could otherwise
5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1168   * happen due to the current CPU number being sampled, this task being
5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1169   * preempted, its old CPU being taken offline, resuming on some other CPU,
49918a54e63c99 kernel/rcu/tree.c Paul E. McKenney 2018-07-07  1170   * then determining that its old CPU is now offline.
c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1171   *
5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1172   * Disable checking if in an NMI handler because we cannot safely
5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1173   * report errors from NMI handlers anyway.  In addition, it is OK to use
5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1174   * RCU on an offline processor during initial boot, hence the check for
5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1175   * rcu_scheduler_fully_active.
c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1176   */
c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1177  bool rcu_lockdep_current_cpu_online(void)
c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1178  {
2036d94a7b61ca kernel/rcutree.c  Paul E. McKenney 2012-01-30  1179  	struct rcu_data *rdp;
2036d94a7b61ca kernel/rcutree.c  Paul E. McKenney 2012-01-30 @1180  	struct rcu_node *rnp;
b97d23c51c9fee kernel/rcu/tree.c Paul E. McKenney 2018-07-04  1181  	bool ret = false;
c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1182  
5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1183  	if (in_nmi() || !rcu_scheduler_fully_active)
f6f7ee9af7554e kernel/rcu/tree.c Fengguang Wu     2013-10-10  1184  		return true;
ff5c4f5cad3306 kernel/rcu/tree.c Thomas Gleixner  2020-03-13  1185  	preempt_disable_notrace();
da1df50d16171f kernel/rcu/tree.c Paul E. McKenney 2018-07-03  1186  	rdp = this_cpu_ptr(&rcu_data);
2036d94a7b61ca kernel/rcutree.c  Paul E. McKenney 2012-01-30  1187  	rnp = rdp->mynode;
defd1f8a1f4efe kernel/rcu/tree.c David Woodhouse  2021-02-16  1188  	/*
defd1f8a1f4efe kernel/rcu/tree.c David Woodhouse  2021-02-16  1189  	 * Strictly, we care here about the case where the current CPU is
defd1f8a1f4efe kernel/rcu/tree.c David Woodhouse  2021-02-16  1190  	 * in rcu_cpu_starting() and thus has an excuse for rdp->grpmask
defd1f8a1f4efe kernel/rcu/tree.c David Woodhouse  2021-02-16  1191  	 * not being up to date. So arch_spin_is_locked() might have a
defd1f8a1f4efe kernel/rcu/tree.c David Woodhouse  2021-02-16  1192  	 * false positive if it's held by some *other* CPU, but that's
defd1f8a1f4efe kernel/rcu/tree.c David Woodhouse  2021-02-16  1193  	 * OK because that just means a false *negative* on the warning.
defd1f8a1f4efe kernel/rcu/tree.c David Woodhouse  2021-02-16  1194  	 */
ee418df9369165 kernel/rcu/tree.c Paul E. McKenney 2021-12-10  1195  	if (rcu_rdp_cpu_online(rdp) || arch_spin_is_locked(&rcu_state.ofl_lock))
b97d23c51c9fee kernel/rcu/tree.c Paul E. McKenney 2018-07-04  1196  		ret = true;
ff5c4f5cad3306 kernel/rcu/tree.c Thomas Gleixner  2020-03-13  1197  	preempt_enable_notrace();
b97d23c51c9fee kernel/rcu/tree.c Paul E. McKenney 2018-07-04  1198  	return ret;
c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1199  }
c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1200  EXPORT_SYMBOL_GPL(rcu_lockdep_current_cpu_online);
c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1201  

:::::: The code at line 1180 was first introduced by commit
:::::: 2036d94a7b61ca5032ce90f2bda06afec0fe713e rcu: Rework detection of use of RCU by offline CPUs

:::::: TO: Paul E. McKenney <paul.mckenney@linaro.org>
:::::: CC: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

^ permalink raw reply	[flat|nested] 3+ messages in thread
* Re: [paulmck-rcu:rcu/next 27/33] kernel/rcu/tree.c:1180:19: warning: variable 'rnp' set but not used
  2021-12-14  3:35 [paulmck-rcu:rcu/next 27/33] kernel/rcu/tree.c:1180:19: warning: variable 'rnp' set but not used kernel test robot
@ 2021-12-14 23:19 ` Paul E. McKenney
  0 siblings, 0 replies; 3+ messages in thread
From: Paul E. McKenney @ 2021-12-14 23:19 UTC (permalink / raw)
  To: kernel test robot; +Cc: kbuild-all, linux-kernel

On Tue, Dec 14, 2021 at 11:35:51AM +0800, kernel test robot wrote:
> tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/next
> head:   a4b57ded94e522e2870ae9504f776caa0f615148
> commit: ee418df93691657d27f6118d1ff8f681c52f4aa3 [27/33] rcu: Create and use a rcu_rdp_cpu_online()
> config: i386-randconfig-s001-20211213 (https://download.01.org/0day-ci/archive/20211214/202112141117.jFtY2VyL-lkp@intel.com/config)
> compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
> reproduce:
>         # apt-get install sparse
>         # sparse version: v0.6.4-dirty
>         # https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git/commit/?id=ee418df93691657d27f6118d1ff8f681c52f4aa3
>         git remote add paulmck-rcu https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git
>         git fetch --no-tags paulmck-rcu rcu/next
>         git checkout ee418df93691657d27f6118d1ff8f681c52f4aa3
>         # save the config file to linux build tree
>         mkdir build_dir
>         make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash kernel/rcu/
> 
> If you fix the issue, kindly add following tag as appropriate
> Reported-by: kernel test robot <lkp@intel.com>
> 
> All warnings (new ones prefixed by >>):
> 
>    kernel/rcu/tree.c: In function 'rcu_lockdep_current_cpu_online':
> >> kernel/rcu/tree.c:1180:19: warning: variable 'rnp' set but not used [-Wunused-but-set-variable]
>     1180 |  struct rcu_node *rnp;
>          |                   ^~~

Good catch, and I am folding the fix into the original commit with
attribution.

							Thanx, Paul

> vim +/rnp +1180 kernel/rcu/tree.c
> 
> c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1163  
> c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1164  /*
> 5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1165   * Is the current CPU online as far as RCU is concerned?
> 2036d94a7b61ca kernel/rcutree.c  Paul E. McKenney 2012-01-30  1166   *
> 5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1167   * Disable preemption to avoid false positives that could otherwise
> 5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1168   * happen due to the current CPU number being sampled, this task being
> 5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1169   * preempted, its old CPU being taken offline, resuming on some other CPU,
> 49918a54e63c99 kernel/rcu/tree.c Paul E. McKenney 2018-07-07  1170   * then determining that its old CPU is now offline.
> c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1171   *
> 5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1172   * Disable checking if in an NMI handler because we cannot safely
> 5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1173   * report errors from NMI handlers anyway.  In addition, it is OK to use
> 5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1174   * RCU on an offline processor during initial boot, hence the check for
> 5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1175   * rcu_scheduler_fully_active.
> c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1176   */
> c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1177  bool rcu_lockdep_current_cpu_online(void)
> c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1178  {
> 2036d94a7b61ca kernel/rcutree.c  Paul E. McKenney 2012-01-30  1179  	struct rcu_data *rdp;
> 2036d94a7b61ca kernel/rcutree.c  Paul E. McKenney 2012-01-30 @1180  	struct rcu_node *rnp;
> b97d23c51c9fee kernel/rcu/tree.c Paul E. McKenney 2018-07-04  1181  	bool ret = false;
> c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1182  
> 5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1183  	if (in_nmi() || !rcu_scheduler_fully_active)
> f6f7ee9af7554e kernel/rcu/tree.c Fengguang Wu     2013-10-10  1184  		return true;
> ff5c4f5cad3306 kernel/rcu/tree.c Thomas Gleixner  2020-03-13  1185  	preempt_disable_notrace();
> da1df50d16171f kernel/rcu/tree.c Paul E. McKenney 2018-07-03  1186  	rdp = this_cpu_ptr(&rcu_data);
> 2036d94a7b61ca kernel/rcutree.c  Paul E. McKenney 2012-01-30  1187  	rnp = rdp->mynode;
> defd1f8a1f4efe kernel/rcu/tree.c David Woodhouse  2021-02-16  1188  	/*
> defd1f8a1f4efe kernel/rcu/tree.c David Woodhouse  2021-02-16  1189  	 * Strictly, we care here about the case where the current CPU is
> defd1f8a1f4efe kernel/rcu/tree.c David Woodhouse  2021-02-16  1190  	 * in rcu_cpu_starting() and thus has an excuse for rdp->grpmask
> defd1f8a1f4efe kernel/rcu/tree.c David Woodhouse  2021-02-16  1191  	 * not being up to date. So arch_spin_is_locked() might have a
> defd1f8a1f4efe kernel/rcu/tree.c David Woodhouse  2021-02-16  1192  	 * false positive if it's held by some *other* CPU, but that's
> defd1f8a1f4efe kernel/rcu/tree.c David Woodhouse  2021-02-16  1193  	 * OK because that just means a false *negative* on the warning.
> defd1f8a1f4efe kernel/rcu/tree.c David Woodhouse  2021-02-16  1194  	 */
> ee418df9369165 kernel/rcu/tree.c Paul E. McKenney 2021-12-10  1195  	if (rcu_rdp_cpu_online(rdp) || arch_spin_is_locked(&rcu_state.ofl_lock))
> b97d23c51c9fee kernel/rcu/tree.c Paul E. McKenney 2018-07-04  1196  		ret = true;
> ff5c4f5cad3306 kernel/rcu/tree.c Thomas Gleixner  2020-03-13  1197  	preempt_enable_notrace();
> b97d23c51c9fee kernel/rcu/tree.c Paul E. McKenney 2018-07-04  1198  	return ret;
> c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1199  }
> c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1200  EXPORT_SYMBOL_GPL(rcu_lockdep_current_cpu_online);
> c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1201  
> 
> :::::: The code at line 1180 was first introduced by commit
> :::::: 2036d94a7b61ca5032ce90f2bda06afec0fe713e rcu: Rework detection of use of RCU by offline CPUs
> 
> :::::: TO: Paul E. McKenney <paul.mckenney@linaro.org>
> :::::: CC: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
> 
> ---
> 0-DAY CI Kernel Test Service, Intel Corporation
> https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

^ permalink raw reply	[flat|nested] 3+ messages in thread
* [paulmck-rcu:rcu/next 27/33] kernel/rcu/tree.c:1180:19: warning: variable 'rnp' set but not used
@ 2021-12-14  6:32 kernel test robot
  0 siblings, 0 replies; 3+ messages in thread
From: kernel test robot @ 2021-12-14  6:32 UTC (permalink / raw)
  To: Paul E. McKenney; +Cc: llvm, kbuild-all, linux-kernel

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git rcu/next
head:   a4b57ded94e522e2870ae9504f776caa0f615148
commit: ee418df93691657d27f6118d1ff8f681c52f4aa3 [27/33] rcu: Create and use a rcu_rdp_cpu_online()
config: x86_64-randconfig-c007-20211213 (https://download.01.org/0day-ci/archive/20211214/202112141454.Emc8fZvq-lkp@intel.com/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project b6a2ddb6c8ac29412b1361810972e15221fa021c)
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
        # https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git/commit/?id=ee418df93691657d27f6118d1ff8f681c52f4aa3
        git remote add paulmck-rcu https://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu.git
        git fetch --no-tags paulmck-rcu rcu/next
        git checkout ee418df93691657d27f6118d1ff8f681c52f4aa3
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=x86_64 SHELL=/bin/bash kernel/rcu/

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

>> kernel/rcu/tree.c:1180:19: warning: variable 'rnp' set but not used [-Wunused-but-set-variable]
           struct rcu_node *rnp;
                            ^
   1 warning generated.


vim +/rnp +1180 kernel/rcu/tree.c

c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1163  
c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1164  /*
5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1165   * Is the current CPU online as far as RCU is concerned?
2036d94a7b61ca kernel/rcutree.c  Paul E. McKenney 2012-01-30  1166   *
5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1167   * Disable preemption to avoid false positives that could otherwise
5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1168   * happen due to the current CPU number being sampled, this task being
5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1169   * preempted, its old CPU being taken offline, resuming on some other CPU,
49918a54e63c99 kernel/rcu/tree.c Paul E. McKenney 2018-07-07  1170   * then determining that its old CPU is now offline.
c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1171   *
5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1172   * Disable checking if in an NMI handler because we cannot safely
5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1173   * report errors from NMI handlers anyway.  In addition, it is OK to use
5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1174   * RCU on an offline processor during initial boot, hence the check for
5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1175   * rcu_scheduler_fully_active.
c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1176   */
c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1177  bool rcu_lockdep_current_cpu_online(void)
c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1178  {
2036d94a7b61ca kernel/rcutree.c  Paul E. McKenney 2012-01-30  1179  	struct rcu_data *rdp;
2036d94a7b61ca kernel/rcutree.c  Paul E. McKenney 2012-01-30 @1180  	struct rcu_node *rnp;
b97d23c51c9fee kernel/rcu/tree.c Paul E. McKenney 2018-07-04  1181  	bool ret = false;
c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1182  
5554788e1d4253 kernel/rcu/tree.c Paul E. McKenney 2018-05-15  1183  	if (in_nmi() || !rcu_scheduler_fully_active)
f6f7ee9af7554e kernel/rcu/tree.c Fengguang Wu     2013-10-10  1184  		return true;
ff5c4f5cad3306 kernel/rcu/tree.c Thomas Gleixner  2020-03-13  1185  	preempt_disable_notrace();
da1df50d16171f kernel/rcu/tree.c Paul E. McKenney 2018-07-03  1186  	rdp = this_cpu_ptr(&rcu_data);
2036d94a7b61ca kernel/rcutree.c  Paul E. McKenney 2012-01-30  1187  	rnp = rdp->mynode;
defd1f8a1f4efe kernel/rcu/tree.c David Woodhouse  2021-02-16  1188  	/*
defd1f8a1f4efe kernel/rcu/tree.c David Woodhouse  2021-02-16  1189  	 * Strictly, we care here about the case where the current CPU is
defd1f8a1f4efe kernel/rcu/tree.c David Woodhouse  2021-02-16  1190  	 * in rcu_cpu_starting() and thus has an excuse for rdp->grpmask
defd1f8a1f4efe kernel/rcu/tree.c David Woodhouse  2021-02-16  1191  	 * not being up to date. So arch_spin_is_locked() might have a
defd1f8a1f4efe kernel/rcu/tree.c David Woodhouse  2021-02-16  1192  	 * false positive if it's held by some *other* CPU, but that's
defd1f8a1f4efe kernel/rcu/tree.c David Woodhouse  2021-02-16  1193  	 * OK because that just means a false *negative* on the warning.
defd1f8a1f4efe kernel/rcu/tree.c David Woodhouse  2021-02-16  1194  	 */
ee418df9369165 kernel/rcu/tree.c Paul E. McKenney 2021-12-10  1195  	if (rcu_rdp_cpu_online(rdp) || arch_spin_is_locked(&rcu_state.ofl_lock))
b97d23c51c9fee kernel/rcu/tree.c Paul E. McKenney 2018-07-04  1196  		ret = true;
ff5c4f5cad3306 kernel/rcu/tree.c Thomas Gleixner  2020-03-13  1197  	preempt_enable_notrace();
b97d23c51c9fee kernel/rcu/tree.c Paul E. McKenney 2018-07-04  1198  	return ret;
c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1199  }
c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1200  EXPORT_SYMBOL_GPL(rcu_lockdep_current_cpu_online);
c0d6d01bffdce1 kernel/rcutree.c  Paul E. McKenney 2012-01-23  1201  

:::::: The code at line 1180 was first introduced by commit
:::::: 2036d94a7b61ca5032ce90f2bda06afec0fe713e rcu: Rework detection of use of RCU by offline CPUs

:::::: TO: Paul E. McKenney <paul.mckenney@linaro.org>
:::::: CC: Paul E. McKenney <paulmck@linux.vnet.ibm.com>

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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2021-12-14  3:35 [paulmck-rcu:rcu/next 27/33] kernel/rcu/tree.c:1180:19: warning: variable 'rnp' set but not used kernel test robot
2021-12-14 23:19 ` Paul E. McKenney
2021-12-14  6:32 kernel test robot

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