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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2013-08-31 19:23:29 -0700 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2013-09-23 09:15:27 -0700 |
| commit | 289828e62de0334a0d01c0f65df91cd47d3a9e05 (patch) | |
| tree | 8bda5b11aa9e8bfcd2e176b7e12b365bfa7b79fe /kernel/rcutree.c | |
| parent | c9d4b0af9e0609cc525c55de18229fde7c926d61 (diff) | |
| download | op-kernel-dev-289828e62de0334a0d01c0f65df91cd47d3a9e05.zip op-kernel-dev-289828e62de0334a0d01c0f65df91cd47d3a9e05.tar.gz | |
rcu: Silence unused-variable warnings
The "idle" variable in both rcu_eqs_enter_common() and
rcu_eqs_exit_common() is only used in a WARN_ON_ONCE(). If the kernel
is built disabling WARN_ON_ONCE(), the compiler will complain (rightly)
that "idle" is unused. This commit therefore adds a __maybe_unused to
the declaration of both variables.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcutree.c')
| -rw-r--r-- | kernel/rcutree.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/kernel/rcutree.c b/kernel/rcutree.c index 8eb9cfd..e6f2e8f 100644 --- a/kernel/rcutree.c +++ b/kernel/rcutree.c @@ -371,7 +371,8 @@ static void rcu_eqs_enter_common(struct rcu_dynticks *rdtp, long long oldval, { trace_rcu_dyntick(TPS("Start"), oldval, rdtp->dynticks_nesting); if (!user && !is_idle_task(current)) { - struct task_struct *idle = idle_task(smp_processor_id()); + struct task_struct *idle __maybe_unused = + idle_task(smp_processor_id()); trace_rcu_dyntick(TPS("Error on entry: not idle task"), oldval, 0); ftrace_dump(DUMP_ORIG); @@ -508,7 +509,8 @@ static void rcu_eqs_exit_common(struct rcu_dynticks *rdtp, long long oldval, rcu_cleanup_after_idle(smp_processor_id()); trace_rcu_dyntick(TPS("End"), oldval, rdtp->dynticks_nesting); if (!user && !is_idle_task(current)) { - struct task_struct *idle = idle_task(smp_processor_id()); + struct task_struct *idle __maybe_unused = + idle_task(smp_processor_id()); trace_rcu_dyntick(TPS("Error on exit: not idle task"), oldval, rdtp->dynticks_nesting); |
