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| author | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2018-01-10 12:21:40 -0800 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2018-02-20 16:10:27 -0800 |
| commit | 62df63e048daf4e29373bbbaae3751e5af5d9502 (patch) | |
| tree | ecb95b4ef4523d1292147acd11a9af6d13ac7a88 /kernel/rcu | |
| parent | bec06785fe2c866ccf39cafa18935d88d77d559a (diff) | |
| download | linux-62df63e048daf4e29373bbbaae3751e5af5d9502.tar.bz2 | |
rcu: Remove obsolete callback-invocation statistics for debugfs
The debugfs interface displayed statistics on RCU callback invocation but
this interface has since been removed. This commit therefore removes the
no-longer-used rcu_data structure's ->n_cbs_invoked and ->n_nocbs_invoked
fields along with their updates.
If this information proves necessary in the future, the corresponding
event traces will be added.
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/tree.c | 1 | ||||
| -rw-r--r-- | kernel/rcu/tree.h | 2 | ||||
| -rw-r--r-- | kernel/rcu/tree_plugin.h | 1 |
3 files changed, 0 insertions, 4 deletions
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index 66c73a214cff..8e0711954bbf 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -2691,7 +2691,6 @@ static void rcu_do_batch(struct rcu_state *rsp, struct rcu_data *rdp) /* Update counts and requeue any remaining callbacks. */ rcu_segcblist_insert_done_cbs(&rdp->cblist, &rcl); smp_mb(); /* List handling before counting for rcu_barrier(). */ - rdp->n_cbs_invoked += count; rcu_segcblist_insert_count(&rdp->cblist, &rcl); /* Reinstate batch limit if we have worked down the excess. */ diff --git a/kernel/rcu/tree.h b/kernel/rcu/tree.h index 01abd1c4e5da..b258fac73524 100644 --- a/kernel/rcu/tree.h +++ b/kernel/rcu/tree.h @@ -211,8 +211,6 @@ struct rcu_data { /* different grace periods. */ long qlen_last_fqs_check; /* qlen at last check for QS forcing */ - unsigned long n_cbs_invoked; /* count of RCU cbs invoked. */ - unsigned long n_nocbs_invoked; /* count of no-CBs RCU cbs invoked. */ unsigned long n_force_qs_snap; /* did other CPU force QS recently? */ long blimit; /* Upper limit on a processed batch */ diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h index 0d552985b905..1c2d58a85511 100644 --- a/kernel/rcu/tree_plugin.h +++ b/kernel/rcu/tree_plugin.h @@ -2243,7 +2243,6 @@ static int rcu_nocb_kthread(void *arg) smp_mb__before_atomic(); /* _add after CB invocation. */ atomic_long_add(-c, &rdp->nocb_q_count); atomic_long_add(-cl, &rdp->nocb_q_count_lazy); - rdp->n_nocbs_invoked += c; } return 0; } |