65661351ca
The internal structure of lcore_config does not need to be part of visible API/ABI. Make it private to EAL. Rearrange the structure so it takes less memory (and cache footprint). Since we change the ABI, bump the library version. Signed-off-by: Stephen Hemminger <stephen@networkplumber.org> Signed-off-by: David Marchand <david.marchand@redhat.com> Acked-by: Thomas Monjalon <thomas@monjalon.net> Acked-by: Anatoly Burakov <anatoly.burakov@intel.com>
93 lines
1.9 KiB
C
93 lines
1.9 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright(c) 2010-2014 Intel Corporation
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*/
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#include <errno.h>
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#include <stdint.h>
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#include <stdio.h>
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#include <sys/queue.h>
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#include <rte_launch.h>
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#include <rte_memory.h>
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#include <rte_eal.h>
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#include <rte_atomic.h>
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#include <rte_pause.h>
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#include <rte_per_lcore.h>
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#include <rte_lcore.h>
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#include "eal_private.h"
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/*
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* Wait until a lcore finished its job.
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*/
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int
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rte_eal_wait_lcore(unsigned slave_id)
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{
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if (lcore_config[slave_id].state == WAIT)
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return 0;
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while (lcore_config[slave_id].state != WAIT &&
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lcore_config[slave_id].state != FINISHED)
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rte_pause();
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rte_rmb();
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/* we are in finished state, go to wait state */
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lcore_config[slave_id].state = WAIT;
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return lcore_config[slave_id].ret;
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}
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/*
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* Check that every SLAVE lcores are in WAIT state, then call
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* rte_eal_remote_launch() for all of them. If call_master is true
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* (set to CALL_MASTER), also call the function on the master lcore.
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*/
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int
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rte_eal_mp_remote_launch(int (*f)(void *), void *arg,
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enum rte_rmt_call_master_t call_master)
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{
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int lcore_id;
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int master = rte_get_master_lcore();
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/* check state of lcores */
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RTE_LCORE_FOREACH_SLAVE(lcore_id) {
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if (lcore_config[lcore_id].state != WAIT)
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return -EBUSY;
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}
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/* send messages to cores */
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RTE_LCORE_FOREACH_SLAVE(lcore_id) {
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rte_eal_remote_launch(f, arg, lcore_id);
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}
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if (call_master == CALL_MASTER) {
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lcore_config[master].ret = f(arg);
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lcore_config[master].state = FINISHED;
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}
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return 0;
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}
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/*
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* Return the state of the lcore identified by slave_id.
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*/
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enum rte_lcore_state_t
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rte_eal_get_lcore_state(unsigned lcore_id)
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{
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return lcore_config[lcore_id].state;
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}
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/*
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* Do a rte_eal_wait_lcore() for every lcore. The return values are
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* ignored.
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*/
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void
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rte_eal_mp_wait_lcore(void)
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{
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unsigned lcore_id;
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RTE_LCORE_FOREACH_SLAVE(lcore_id) {
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rte_eal_wait_lcore(lcore_id);
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}
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}
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