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https://github.com/openvswitch/ovs
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b4e28b7f98
This option is used to initialize the ovs_numa module with a fake configuration and to avoid pthread_setaffinity_np() calls. It will be useful to test dpif-netdev with pmd threads. Since it is only used for testing it is not documented in the man pages. Signed-off-by: Daniele Di Proietto <diproiettod@vmware.com> Acked-by: Ilya Maximets <i.maximets@samsung.com>
64 lines
2.0 KiB
C
64 lines
2.0 KiB
C
/*
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* Copyright (c) 2014 Nicira, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef OVS_NUMA_H
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#define OVS_NUMA_H 1
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#include <limits.h>
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#include <stdbool.h>
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#include "compiler.h"
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#include "openvswitch/list.h"
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#define OVS_CORE_UNSPEC INT_MAX
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#define OVS_NUMA_UNSPEC INT_MAX
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/* Dump of a list of 'struct ovs_numa_info'. */
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struct ovs_numa_dump {
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struct ovs_list dump;
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};
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/* A numa_id - core_id pair. */
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struct ovs_numa_info {
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struct ovs_list list_node;
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int numa_id;
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unsigned core_id;
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};
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void ovs_numa_init(void);
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void ovs_numa_set_dummy(const char *dummy_config);
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bool ovs_numa_numa_id_is_valid(int numa_id);
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bool ovs_numa_core_id_is_valid(unsigned core_id);
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bool ovs_numa_core_is_pinned(unsigned core_id);
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int ovs_numa_get_n_numas(void);
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void ovs_numa_set_cpu_mask(const char *cmask);
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int ovs_numa_get_n_cores(void);
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int ovs_numa_get_numa_id(unsigned core_id);
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int ovs_numa_get_n_cores_on_numa(int numa_id);
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int ovs_numa_get_n_unpinned_cores_on_numa(int numa_id);
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bool ovs_numa_try_pin_core_specific(unsigned core_id);
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unsigned ovs_numa_get_unpinned_core_any(void);
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unsigned ovs_numa_get_unpinned_core_on_numa(int numa_id);
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void ovs_numa_unpin_core(unsigned core_id);
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struct ovs_numa_dump *ovs_numa_dump_cores_on_numa(int numa_id);
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void ovs_numa_dump_destroy(struct ovs_numa_dump *);
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int ovs_numa_thread_setaffinity_core(unsigned core_id);
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#define FOR_EACH_CORE_ON_NUMA(ITER, DUMP) \
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LIST_FOR_EACH((ITER), list_node, &(DUMP)->dump)
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#endif /* ovs-numa.h */
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