992db80f1d
when calculating stats in nvmecontrol perftest. Sponsored by: Intel Reported by: Joe Golio <joseph.golio@emc.com> Reviewed by: carl Approved by: re (hrs) MFC after: 1 week
306 lines
7.1 KiB
C
306 lines
7.1 KiB
C
/*-
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* Copyright (C) 2012-2013 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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* 1. 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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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/bio.h>
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#include <sys/conf.h>
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#include <sys/fcntl.h>
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#include <sys/kthread.h>
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#include <sys/module.h>
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#include <sys/proc.h>
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#include <sys/syscallsubr.h>
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#include <sys/sysctl.h>
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#include <sys/sysproto.h>
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#include <sys/systm.h>
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#include <sys/unistd.h>
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#include <geom/geom.h>
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#include "nvme_private.h"
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struct nvme_io_test_thread {
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uint32_t idx;
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struct nvme_namespace *ns;
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enum nvme_nvm_opcode opc;
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struct timeval start;
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void *buf;
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uint32_t size;
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uint32_t time;
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uint64_t io_completed;
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};
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struct nvme_io_test_internal {
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struct nvme_namespace *ns;
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enum nvme_nvm_opcode opc;
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struct timeval start;
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uint32_t time;
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uint32_t size;
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uint32_t td_active;
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uint32_t td_idx;
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uint32_t flags;
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uint64_t io_completed[NVME_TEST_MAX_THREADS];
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};
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static void
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nvme_ns_bio_test_cb(struct bio *bio)
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{
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struct mtx *mtx;
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mtx = mtx_pool_find(mtxpool_sleep, bio);
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mtx_lock(mtx);
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wakeup(bio);
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mtx_unlock(mtx);
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}
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static void
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nvme_ns_bio_test(void *arg)
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{
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struct nvme_io_test_internal *io_test = arg;
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struct cdevsw *csw;
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struct mtx *mtx;
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struct bio *bio;
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struct cdev *dev;
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void *buf;
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struct timeval t;
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uint64_t io_completed = 0, offset;
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uint32_t idx;
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#if __FreeBSD_version >= 900017
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int ref;
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#endif
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buf = malloc(io_test->size, M_NVME, M_WAITOK);
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idx = atomic_fetchadd_int(&io_test->td_idx, 1);
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dev = io_test->ns->cdev;
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offset = idx * 2048 * nvme_ns_get_sector_size(io_test->ns);
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while (1) {
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bio = g_alloc_bio();
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memset(bio, 0, sizeof(*bio));
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bio->bio_cmd = (io_test->opc == NVME_OPC_READ) ?
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BIO_READ : BIO_WRITE;
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bio->bio_done = nvme_ns_bio_test_cb;
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bio->bio_dev = dev;
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bio->bio_offset = offset;
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bio->bio_data = buf;
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bio->bio_bcount = io_test->size;
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if (io_test->flags & NVME_TEST_FLAG_REFTHREAD) {
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#if __FreeBSD_version >= 900017
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csw = dev_refthread(dev, &ref);
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#else
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csw = dev_refthread(dev);
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#endif
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} else
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csw = dev->si_devsw;
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mtx = mtx_pool_find(mtxpool_sleep, bio);
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mtx_lock(mtx);
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(*csw->d_strategy)(bio);
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msleep(bio, mtx, PRIBIO, "biotestwait", 0);
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mtx_unlock(mtx);
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if (io_test->flags & NVME_TEST_FLAG_REFTHREAD) {
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#if __FreeBSD_version >= 900017
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dev_relthread(dev, ref);
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#else
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dev_relthread(dev);
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#endif
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}
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if ((bio->bio_flags & BIO_ERROR) || (bio->bio_resid > 0))
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break;
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g_destroy_bio(bio);
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io_completed++;
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getmicrouptime(&t);
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timevalsub(&t, &io_test->start);
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if (t.tv_sec >= io_test->time)
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break;
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offset += io_test->size;
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if ((offset + io_test->size) > nvme_ns_get_size(io_test->ns))
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offset = 0;
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}
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io_test->io_completed[idx] = io_completed;
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wakeup_one(io_test);
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free(buf, M_NVME);
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atomic_subtract_int(&io_test->td_active, 1);
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mb();
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#if __FreeBSD_version >= 800000
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kthread_exit();
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#else
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kthread_exit(0);
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#endif
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}
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static void
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nvme_ns_io_test_cb(void *arg, const struct nvme_completion *cpl)
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{
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struct nvme_io_test_thread *tth = arg;
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struct timeval t;
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tth->io_completed++;
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if (nvme_completion_is_error(cpl)) {
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printf("%s: error occurred\n", __func__);
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wakeup_one(tth);
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return;
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}
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getmicrouptime(&t);
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timevalsub(&t, &tth->start);
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if (t.tv_sec >= tth->time) {
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wakeup_one(tth);
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return;
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}
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switch (tth->opc) {
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case NVME_OPC_WRITE:
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nvme_ns_cmd_write(tth->ns, tth->buf, tth->idx * 2048,
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tth->size/nvme_ns_get_sector_size(tth->ns),
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nvme_ns_io_test_cb, tth);
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break;
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case NVME_OPC_READ:
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nvme_ns_cmd_read(tth->ns, tth->buf, tth->idx * 2048,
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tth->size/nvme_ns_get_sector_size(tth->ns),
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nvme_ns_io_test_cb, tth);
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break;
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default:
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break;
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}
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}
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static void
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nvme_ns_io_test(void *arg)
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{
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struct nvme_io_test_internal *io_test = arg;
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struct nvme_io_test_thread *tth;
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struct nvme_completion cpl;
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int error;
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tth = malloc(sizeof(*tth), M_NVME, M_WAITOK | M_ZERO);
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tth->ns = io_test->ns;
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tth->opc = io_test->opc;
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memcpy(&tth->start, &io_test->start, sizeof(tth->start));
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tth->buf = malloc(io_test->size, M_NVME, M_WAITOK);
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tth->size = io_test->size;
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tth->time = io_test->time;
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tth->idx = atomic_fetchadd_int(&io_test->td_idx, 1);
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memset(&cpl, 0, sizeof(cpl));
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nvme_ns_io_test_cb(tth, &cpl);
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error = tsleep(tth, 0, "test_wait", tth->time*hz*2);
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if (error)
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printf("%s: error = %d\n", __func__, error);
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io_test->io_completed[tth->idx] = tth->io_completed;
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wakeup_one(io_test);
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free(tth->buf, M_NVME);
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free(tth, M_NVME);
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atomic_subtract_int(&io_test->td_active, 1);
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mb();
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#if __FreeBSD_version >= 800004
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kthread_exit();
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#else
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kthread_exit(0);
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#endif
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}
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void
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nvme_ns_test(struct nvme_namespace *ns, u_long cmd, caddr_t arg)
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{
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struct nvme_io_test *io_test;
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struct nvme_io_test_internal *io_test_internal;
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void (*fn)(void *);
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int i;
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io_test = (struct nvme_io_test *)arg;
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if ((io_test->opc != NVME_OPC_READ) &&
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(io_test->opc != NVME_OPC_WRITE))
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return;
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if (io_test->size % nvme_ns_get_sector_size(ns))
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return;
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io_test_internal = malloc(sizeof(*io_test_internal), M_NVME,
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M_WAITOK | M_ZERO);
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io_test_internal->opc = io_test->opc;
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io_test_internal->ns = ns;
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io_test_internal->td_active = io_test->num_threads;
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io_test_internal->time = io_test->time;
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io_test_internal->size = io_test->size;
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io_test_internal->flags = io_test->flags;
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if (cmd == NVME_IO_TEST)
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fn = nvme_ns_io_test;
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else
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fn = nvme_ns_bio_test;
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getmicrouptime(&io_test_internal->start);
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for (i = 0; i < io_test->num_threads; i++)
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#if __FreeBSD_version >= 800004
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kthread_add(fn, io_test_internal,
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NULL, NULL, 0, 0, "nvme_io_test[%d]", i);
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#else
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kthread_create(fn, io_test_internal,
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NULL, 0, 0, "nvme_io_test[%d]", i);
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#endif
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tsleep(io_test_internal, 0, "nvme_test", io_test->time * 2 * hz);
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while (io_test_internal->td_active > 0)
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DELAY(10);
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memcpy(io_test->io_completed, io_test_internal->io_completed,
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sizeof(io_test->io_completed));
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free(io_test_internal, M_NVME);
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}
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