488570ebd4
Many open source projects have moved to using SPDX identifiers to specify license information, reducing the amount of boilerplate code in every source file. This patch replaces the bulk of SPDK .c, .cpp and Makefiles with the BSD-3-Clause identifier. Almost all of these files share the exact same license text, and this patch only modifies the files that contain the most common license text. There can be slight variations because the third clause contains company names - most say "Intel Corporation", but there are instances for Nvidia, Samsung, Eideticom and even "the copyright holder". Used a bash script to automate replacement of the license text with SPDX identifier which is checked into scripts/spdx.sh. Signed-off-by: Jim Harris <james.r.harris@intel.com> Change-Id: Iaa88ab5e92ea471691dc298cfe41ebfb5d169780 Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/12904 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: Aleksey Marchuk <alexeymar@nvidia.com> Reviewed-by: Changpeng Liu <changpeng.liu@intel.com> Reviewed-by: Dong Yi <dongx.yi@intel.com> Reviewed-by: Konrad Sztyber <konrad.sztyber@intel.com> Reviewed-by: Paul Luse <paul.e.luse@intel.com> Reviewed-by: <qun.wan@intel.com>
82 lines
1.9 KiB
C
82 lines
1.9 KiB
C
/* SPDX-License-Identifier: BSD-3-Clause
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* Copyright (c) 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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