a86e40f320
This patch moves schedueler and governor related API from the internal event.h to public scheduler.h. With this it is possible to create subsystem responsible for handling the schedulers. Three schedulers and a governor were moved to scheduler modules from event framework. This will allow next patch to add JSON RPC configuration to the whole subsystem. Along with easier addition of other schedulers. Removed debug logs from gscheduler, as they serve little purpose. Signed-off-by: Krzysztof Karas <krzysztof.karas@intel.com> Signed-off-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com> Change-Id: I98ca1ea4fb281beb71941656444267842a8875b7 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/6995 Community-CI: Broadcom CI <spdk-ci.pdl@broadcom.com> Community-CI: Mellanox Build Bot Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
110 lines
3.4 KiB
C
110 lines
3.4 KiB
C
/*-
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* BSD LICENSE
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*
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* Copyright (c) Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* * Neither the name of Intel Corporation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "spdk/stdinc.h"
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#include "spdk/likely.h"
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#include "spdk_internal/event.h"
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#include "spdk/thread.h"
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#include "spdk/log.h"
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#include "spdk/env.h"
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#include "spdk/scheduler.h"
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static int
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init(void)
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{
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return spdk_governor_set("dpdk_governor");
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}
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static void
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deinit(void)
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{
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spdk_governor_set(NULL);
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}
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static void
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balance(struct spdk_scheduler_core_info *cores, uint32_t core_count)
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{
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struct spdk_governor *governor;
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struct spdk_scheduler_core_info *core;
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struct spdk_governor_capabilities capabilities;
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uint32_t i;
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int rc;
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governor = spdk_governor_get();
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assert(governor != NULL);
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/* Gather active/idle statistics */
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SPDK_ENV_FOREACH_CORE(i) {
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core = &cores[i];
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rc = governor->get_core_capabilities(core->lcore, &capabilities);
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if (rc < 0) {
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SPDK_ERRLOG("failed to get capabilities for core: %u\n", core->lcore);
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return;
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}
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if (core->total_busy_tsc < (core->total_idle_tsc / 1000)) {
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rc = governor->set_core_freq_min(core->lcore);
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if (rc < 0) {
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SPDK_ERRLOG("setting to minimal frequency for core %u failed\n", core->lcore);
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}
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} else if (core->total_idle_tsc > core->total_busy_tsc) {
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rc = governor->core_freq_down(core->lcore);
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if (rc < 0) {
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SPDK_ERRLOG("lowering frequency for core %u failed\n", core->lcore);
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}
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} else if (core->total_idle_tsc < (core->total_busy_tsc / 1000)) {
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rc = governor->set_core_freq_max(core->lcore);
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if (rc < 0) {
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SPDK_ERRLOG("setting to maximal frequency for core %u failed\n", core->lcore);
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}
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} else {
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rc = governor->core_freq_up(core->lcore);
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if (rc < 0) {
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SPDK_ERRLOG("increasing frequency for core %u failed\n", core->lcore);
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}
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}
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}
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}
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static struct spdk_scheduler gscheduler = {
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.name = "gscheduler",
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.init = init,
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.deinit = deinit,
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.balance = balance,
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};
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SPDK_SCHEDULER_REGISTER(gscheduler);
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