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1af16d547f
Count hits and misses in the caps cache. If the client has all of the necessary caps when a task needs references, then it's counted as a hit. Any other situation is a miss. URL: https://tracker.ceph.com/issues/43215 Signed-off-by: Xiubo Li <xiubli@redhat.com> Reviewed-by: Jeff Layton <jlayton@kernel.org> Signed-off-by: Ilya Dryomov <idryomov@gmail.com>
53 lines
1 KiB
C
53 lines
1 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#include <linux/types.h>
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#include <linux/percpu_counter.h>
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#include "metric.h"
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int ceph_metric_init(struct ceph_client_metric *m)
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{
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int ret;
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if (!m)
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return -EINVAL;
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atomic64_set(&m->total_dentries, 0);
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ret = percpu_counter_init(&m->d_lease_hit, 0, GFP_KERNEL);
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if (ret)
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return ret;
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ret = percpu_counter_init(&m->d_lease_mis, 0, GFP_KERNEL);
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if (ret)
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goto err_d_lease_mis;
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ret = percpu_counter_init(&m->i_caps_hit, 0, GFP_KERNEL);
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if (ret)
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goto err_i_caps_hit;
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ret = percpu_counter_init(&m->i_caps_mis, 0, GFP_KERNEL);
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if (ret)
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goto err_i_caps_mis;
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return 0;
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err_i_caps_mis:
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percpu_counter_destroy(&m->i_caps_hit);
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err_i_caps_hit:
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percpu_counter_destroy(&m->d_lease_mis);
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err_d_lease_mis:
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percpu_counter_destroy(&m->d_lease_hit);
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return ret;
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}
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void ceph_metric_destroy(struct ceph_client_metric *m)
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{
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if (!m)
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return;
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percpu_counter_destroy(&m->i_caps_mis);
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percpu_counter_destroy(&m->i_caps_hit);
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percpu_counter_destroy(&m->d_lease_mis);
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percpu_counter_destroy(&m->d_lease_hit);
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}
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