a6dbe3721e
per Intel policy to include file commit date using git cmd below. The policy does not apply to non-Intel (C) notices. git log --follow -C90% --format=%ad --date default <file> | tail -1 and then pull just the 4 digit year from the result. Intel copyrights were not added to files where Intel either had no contribution ot the contribution lacked substance (ie license header updates, formatting changes, etc). Contribution date used "--follow -C95%" to get the most accurate date. Note that several files in this patch didn't end the license/(c) block with a blank comment line so these were added as the vast majority of files do have this last blank line. Simply there for consistency. Signed-off-by: paul luse <paul.e.luse@intel.com> Change-Id: Id5b7ce4f658fe87132f14139ead58d6e285c04d4 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/15192 Tested-by: SPDK CI Jenkins <sys_sgci@intel.com> Reviewed-by: Jim Harris <james.r.harris@intel.com> Reviewed-by: Ben Walker <benjamin.walker@intel.com> Community-CI: Mellanox Build Bot
82 lines
1.9 KiB
C
82 lines
1.9 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (C) 2021 Intel Corporation.
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* All rights reserved.
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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->current_busy_tsc < (core->current_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->current_idle_tsc > core->current_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->current_idle_tsc < (core->current_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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