diff options
| author | Alexander Gordeev <agordeev@redhat.com> | 2015-06-03 08:18:24 +0200 |
|---|---|---|
| committer | Paul E. McKenney <paulmck@linux.vnet.ibm.com> | 2015-07-15 14:45:13 -0700 |
| commit | 372b0ec24f6b516174934d68fd86d2056f1a5bba (patch) | |
| tree | a1d22752e58a94a9f04a3324953d3397e8079b71 /kernel/rcu | |
| parent | 75cf15a4c0dd57f5d230bd30c2d41bd8e06ae5a9 (diff) | |
rcu: Remove superfluous local variable in rcu_init_geometry()
Local variable 'n' mimics 'nr_cpu_ids' while the both are
used within one function. There is no reason for 'n' to
exist whatsoever.
Cc: "Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Alexander Gordeev <agordeev@redhat.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Diffstat (limited to 'kernel/rcu')
| -rw-r--r-- | kernel/rcu/tree.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/kernel/rcu/tree.c b/kernel/rcu/tree.c index fe8d92987dfa..ad49dbed44fb 100644 --- a/kernel/rcu/tree.c +++ b/kernel/rcu/tree.c @@ -4083,7 +4083,6 @@ static void __init rcu_init_geometry(void) ulong d; int i; int j; - int n = nr_cpu_ids; int rcu_capacity[MAX_RCU_LVLS + 1]; /* @@ -4133,15 +4132,16 @@ static void __init rcu_init_geometry(void) * The tree must be able to accommodate the configured number of CPUs. * If this limit is exceeded than we have a serious problem elsewhere. */ - if (n > rcu_capacity[MAX_RCU_LVLS]) + if (nr_cpu_ids > rcu_capacity[MAX_RCU_LVLS]) panic("rcu_init_geometry: rcu_capacity[] is too small"); /* Calculate the number of rcu_nodes at each level of the tree. */ for (i = 1; i <= MAX_RCU_LVLS; i++) - if (n <= rcu_capacity[i]) { - for (j = 0; j <= i; j++) - num_rcu_lvl[j] = - DIV_ROUND_UP(n, rcu_capacity[i - j]); + if (nr_cpu_ids <= rcu_capacity[i]) { + for (j = 0; j <= i; j++) { + int cap = rcu_capacity[i - j]; + num_rcu_lvl[j] = DIV_ROUND_UP(nr_cpu_ids, cap); + } rcu_num_lvls = i; for (j = i + 1; j <= MAX_RCU_LVLS; j++) num_rcu_lvl[j] = 0; @@ -4152,7 +4152,7 @@ static void __init rcu_init_geometry(void) rcu_num_nodes = 0; for (i = 0; i <= MAX_RCU_LVLS; i++) rcu_num_nodes += num_rcu_lvl[i]; - rcu_num_nodes -= n; + rcu_num_nodes -= nr_cpu_ids; } /* |