[PATCH tip/core/rcu 5/9] rcu: Remove unused variable rcu_perf_writer_state

[paulmck]

From: Ethan Hansen <1ethanhan...@gmail.com>

The variable rcu_perf_writer_state is declared and initialized,
but is never actually referenced. Remove it to clean code.

Signed-off-by: Ethan Hansen <1ethanhan...@gmail.com>
[ ethansen: Also removed unused macros assigned to that variable. ]
Signed-off-by: Paul E. McKenney <paul...@linux.ibm.com>
---
 kernel/rcu/rcuperf.c | 16 ----------------
 1 file changed, 16 deletions(-)

diff --git a/kernel/rcu/rcuperf.c b/kernel/rcu/rcuperf.c
index 5a879d0..5f884d5 100644
--- a/kernel/rcu/rcuperf.c
+++ b/kernel/rcu/rcuperf.c
@@ -109,15 +109,6 @@ static unsigned long b_rcu_perf_writer_started;
 static unsigned long b_rcu_perf_writer_finished;
 static DEFINE_PER_CPU(atomic_t, n_async_inflight);
 
-static int rcu_perf_writer_state;
-#define RTWS_INIT              0
-#define RTWS_ASYNC             1
-#define RTWS_BARRIER           2
-#define RTWS_EXP_SYNC          3
-#define RTWS_SYNC              4
-#define RTWS_IDLE              5
-#define RTWS_STOPPING          6
-
 #define MAX_MEAS 10000
 #define MIN_MEAS 100
 
@@ -404,25 +395,20 @@ rcu_perf_writer(void *arg)
                        if (!rhp)
                                rhp = kmalloc(sizeof(*rhp), GFP_KERNEL);
                        if (rhp && atomic_read(this_cpu_ptr(&n_async_inflight)) 
< gp_async_max) {
-                               rcu_perf_writer_state = RTWS_ASYNC;
                                atomic_inc(this_cpu_ptr(&n_async_inflight));
                                cur_ops->async(rhp, rcu_perf_async_cb);
                                rhp = NULL;
                        } else if (!kthread_should_stop()) {
-                               rcu_perf_writer_state = RTWS_BARRIER;
                                cur_ops->gp_barrier();
                                goto retry;
                        } else {
                                kfree(rhp); /* Because we are stopping. */
                        }
                } else if (gp_exp) {
-                       rcu_perf_writer_state = RTWS_EXP_SYNC;
                        cur_ops->exp_sync();
                } else {
-                       rcu_perf_writer_state = RTWS_SYNC;
                        cur_ops->sync();
                }
-               rcu_perf_writer_state = RTWS_IDLE;
                t = ktime_get_mono_fast_ns();
                *wdp = t - *wdp;
                i_max = i;
@@ -463,10 +449,8 @@ rcu_perf_writer(void *arg)
                rcu_perf_wait_shutdown();
        } while (!torture_must_stop());
        if (gp_async) {
-               rcu_perf_writer_state = RTWS_BARRIER;
                cur_ops->gp_barrier();
        }
-       rcu_perf_writer_state = RTWS_STOPPING;
        writer_n_durations[me] = i_max;
        torture_kthread_stopping("rcu_perf_writer");
        return 0;
-- 
2.9.5