Use group allocation/free of per-cpu counters api to accelerate
nfsd percpu_counters init/destroy(), and also squash the
nfsd_percpu_counters_init/reset/destroy() and nfsd_counters_init/destroy()
into callers to simplify code.
Signed-off-by: Kefeng Wang <[email protected]>
---
v2:
- directly use percpu_counter_*_many helpers and drop wrappers,
suggested by Jeff Layton
fs/nfsd/export.c | 16 ++++++++++------
fs/nfsd/nfsctl.c | 5 +++--
fs/nfsd/stats.c | 42 ------------------------------------------
fs/nfsd/stats.h | 5 -----
4 files changed, 13 insertions(+), 55 deletions(-)
diff --git a/fs/nfsd/export.c b/fs/nfsd/export.c
index 7b641095a665..50b3135d07ac 100644
--- a/fs/nfsd/export.c
+++ b/fs/nfsd/export.c
@@ -334,21 +334,25 @@ static void nfsd4_fslocs_free(struct nfsd4_fs_locations *fsloc)
static int export_stats_init(struct export_stats *stats)
{
stats->start_time = ktime_get_seconds();
- return nfsd_percpu_counters_init(stats->counter, EXP_STATS_COUNTERS_NUM);
+ return percpu_counter_init_many(stats->counter, 0, GFP_KERNEL,
+ EXP_STATS_COUNTERS_NUM);
}
static void export_stats_reset(struct export_stats *stats)
{
- if (stats)
- nfsd_percpu_counters_reset(stats->counter,
- EXP_STATS_COUNTERS_NUM);
+ if (stats) {
+ int i;
+
+ for (i = 0; i < EXP_STATS_COUNTERS_NUM; i++)
+ percpu_counter_set(&stats->counter[i], 0);
+ }
}
static void export_stats_destroy(struct export_stats *stats)
{
if (stats)
- nfsd_percpu_counters_destroy(stats->counter,
- EXP_STATS_COUNTERS_NUM);
+ percpu_counter_destroy_many(stats->counter,
+ EXP_STATS_COUNTERS_NUM);
}
static void svc_export_put(struct kref *ref)
diff --git a/fs/nfsd/nfsctl.c b/fs/nfsd/nfsctl.c
index ecd18bffeebc..93c87587e646 100644
--- a/fs/nfsd/nfsctl.c
+++ b/fs/nfsd/nfsctl.c
@@ -1672,7 +1672,8 @@ static __net_init int nfsd_net_init(struct net *net)
retval = nfsd_idmap_init(net);
if (retval)
goto out_idmap_error;
- retval = nfsd_stat_counters_init(nn);
+ retval = percpu_counter_init_many(nn->counter, 0, GFP_KERNEL,
+ NFSD_STATS_COUNTERS_NUM);
if (retval)
goto out_repcache_error;
memset(&nn->nfsd_svcstats, 0, sizeof(nn->nfsd_svcstats));
@@ -1704,7 +1705,7 @@ static __net_exit void nfsd_net_exit(struct net *net)
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
nfsd_proc_stat_shutdown(net);
- nfsd_stat_counters_destroy(nn);
+ percpu_counter_destroy_many(nn->counter, NFSD_STATS_COUNTERS_NUM);
nfsd_idmap_shutdown(net);
nfsd_export_shutdown(net);
nfsd_netns_free_versions(nn);
diff --git a/fs/nfsd/stats.c b/fs/nfsd/stats.c
index be52fb1e928e..bb22893f1157 100644
--- a/fs/nfsd/stats.c
+++ b/fs/nfsd/stats.c
@@ -73,48 +73,6 @@ static int nfsd_show(struct seq_file *seq, void *v)
DEFINE_PROC_SHOW_ATTRIBUTE(nfsd);
-int nfsd_percpu_counters_init(struct percpu_counter *counters, int num)
-{
- int i, err = 0;
-
- for (i = 0; !err && i < num; i++)
- err = percpu_counter_init(&counters[i], 0, GFP_KERNEL);
-
- if (!err)
- return 0;
-
- for (; i > 0; i--)
- percpu_counter_destroy(&counters[i-1]);
-
- return err;
-}
-
-void nfsd_percpu_counters_reset(struct percpu_counter counters[], int num)
-{
- int i;
-
- for (i = 0; i < num; i++)
- percpu_counter_set(&counters[i], 0);
-}
-
-void nfsd_percpu_counters_destroy(struct percpu_counter counters[], int num)
-{
- int i;
-
- for (i = 0; i < num; i++)
- percpu_counter_destroy(&counters[i]);
-}
-
-int nfsd_stat_counters_init(struct nfsd_net *nn)
-{
- return nfsd_percpu_counters_init(nn->counter, NFSD_STATS_COUNTERS_NUM);
-}
-
-void nfsd_stat_counters_destroy(struct nfsd_net *nn)
-{
- nfsd_percpu_counters_destroy(nn->counter, NFSD_STATS_COUNTERS_NUM);
-}
-
void nfsd_proc_stat_init(struct net *net)
{
struct nfsd_net *nn = net_generic(net, nfsd_net_id);
diff --git a/fs/nfsd/stats.h b/fs/nfsd/stats.h
index d2753e975dfd..04aacb6c36e2 100644
--- a/fs/nfsd/stats.h
+++ b/fs/nfsd/stats.h
@@ -10,11 +10,6 @@
#include <uapi/linux/nfsd/stats.h>
#include <linux/percpu_counter.h>
-int nfsd_percpu_counters_init(struct percpu_counter *counters, int num);
-void nfsd_percpu_counters_reset(struct percpu_counter *counters, int num);
-void nfsd_percpu_counters_destroy(struct percpu_counter *counters, int num);
-int nfsd_stat_counters_init(struct nfsd_net *nn);
-void nfsd_stat_counters_destroy(struct nfsd_net *nn);
void nfsd_proc_stat_init(struct net *net);
void nfsd_proc_stat_shutdown(struct net *net);
--
2.41.0