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Add linux zpios support
Linux kernel implementation of PIOS test app. Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Brian Behlendorf
@@ -3,6 +3,7 @@ subdir-m += nvpair
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subdir-m += unicode
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subdir-m += zcommon
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subdir-m += zfs
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subdir-m += zpios
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modules:
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# Make the exported SPL symbols available to these modules.
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@@ -0,0 +1,11 @@
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MODULE := zpios
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EXTRA_CFLAGS = -I@MODDIR@/zfs/include
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EXTRA_CFLAGS += -I@MODDIR@/zcommon/include
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EXTRA_CFLAGS += -I@MODDIR@/avl/include
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EXTRA_CFLAGS += -I@MODDIR@/nvpair/include
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EXTRA_CFLAGS += -I@MODDIR@/unicode/include
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EXTRA_CFLAGS += -I@MODDIR@/zpios/include
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EXTRA_CFLAGS += @KERNELCPPFLAGS@
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obj-m := ${MODULE}.o
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@@ -0,0 +1,198 @@
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/*****************************************************************************\
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* ZPIOS is a heavily modified version of the original PIOS test code.
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* It is designed to have the test code running in the Linux kernel
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* against ZFS while still being flexibly controled from user space.
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*
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* Copyright (C) 2008-2010 Lawrence Livermore National Security, LLC.
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* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
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* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
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* LLNL-CODE-403049
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*
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* Original PIOS Test Code
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* Copyright (C) 2004 Cluster File Systems, Inc.
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* Written by Peter Braam <braam@clusterfs.com>
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* Atul Vidwansa <atul@clusterfs.com>
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* Milind Dumbare <milind@clusterfs.com>
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*
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* This file is part of ZFS on Linux.
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* For details, see <http://github.com/behlendorf/zfs/>.
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*
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* ZPIOS is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* ZPIOS is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with ZPIOS. If not, see <http://www.gnu.org/licenses/>.
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\*****************************************************************************/
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#ifndef _ZPIOS_CTL_H
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#define _ZPIOS_CTL_H
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/* Contains shared definitions which both the userspace
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* and kernelspace portions of zpios must agree on.
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*/
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#ifndef _KERNEL
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#include <stdint.h>
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#endif
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#define ZPIOS_MAJOR 232 /* XXX - Arbitrary */
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#define ZPIOS_MINORS 1
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#define ZPIOS_NAME "zpios"
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#define ZPIOS_DEV "/dev/zpios"
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#define DMU_IO 0x01
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#define DMU_WRITE 0x0001
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#define DMU_READ 0x0002
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#define DMU_VERIFY 0x0004
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#define DMU_REMOVE 0x0008
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#define DMU_FPP 0x0010
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#define DMU_WRITE_ZC 0x0020 /* Incompatible w/DMU_VERIFY */
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#define DMU_READ_ZC 0x0040 /* Incompatible w/DMU_VERIFY */
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#define DMU_WRITE_NOWAIT 0x0080
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#define DMU_READ_NOPF 0x0100
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#define ZPIOS_NAME_SIZE 16
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#define ZPIOS_PATH_SIZE 128
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#define PHASE_PRE_RUN "pre-run"
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#define PHASE_PRE_CREATE "pre-create"
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#define PHASE_PRE_WRITE "pre-write"
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#define PHASE_PRE_READ "pre-read"
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#define PHASE_PRE_REMOVE "pre-remove"
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#define PHASE_POST_RUN "post-run"
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#define PHASE_POST_CREATE "post-create"
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#define PHASE_POST_WRITE "post-write"
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#define PHASE_POST_READ "post-read"
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#define PHASE_POST_REMOVE "post-remove"
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#define ZPIOS_CFG_MAGIC 0x87237190U
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typedef struct zpios_cfg {
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uint32_t cfg_magic; /* Unique magic */
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int32_t cfg_cmd; /* Config command */
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int32_t cfg_arg1; /* Config command arg 1 */
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int32_t cfg_rc1; /* Config response 1 */
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} zpios_cfg_t;
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typedef struct zpios_timespec {
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uint32_t ts_sec;
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uint32_t ts_nsec;
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} zpios_timespec_t;
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typedef struct zpios_time {
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zpios_timespec_t start;
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zpios_timespec_t stop;
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zpios_timespec_t delta;
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} zpios_time_t;
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typedef struct zpios_stats {
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zpios_time_t total_time;
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zpios_time_t cr_time;
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zpios_time_t rm_time;
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zpios_time_t wr_time;
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zpios_time_t rd_time;
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uint64_t wr_data;
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uint64_t wr_chunks;
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uint64_t rd_data;
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uint64_t rd_chunks;
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} zpios_stats_t;
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#define ZPIOS_CMD_MAGIC 0x49715385U
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typedef struct zpios_cmd {
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uint32_t cmd_magic; /* Unique magic */
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uint32_t cmd_id; /* Run ID */
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char cmd_pool[ZPIOS_NAME_SIZE]; /* Pool name */
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uint64_t cmd_chunk_size; /* Chunk size */
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uint32_t cmd_thread_count; /* Thread count */
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uint32_t cmd_region_count; /* Region count */
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uint64_t cmd_region_size; /* Region size */
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uint64_t cmd_offset; /* Region offset */
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uint32_t cmd_region_noise; /* Region noise */
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uint32_t cmd_chunk_noise; /* Chunk noise */
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uint32_t cmd_thread_delay; /* Thread delay */
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uint32_t cmd_flags; /* Test flags */
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char cmd_pre[ZPIOS_PATH_SIZE]; /* Pre-exec hook */
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char cmd_post[ZPIOS_PATH_SIZE]; /* Post-exec hook */
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char cmd_log[ZPIOS_PATH_SIZE]; /* Requested log dir */
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uint64_t cmd_data_size; /* Opaque data size */
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char cmd_data_str[0]; /* Opaque data region */
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} zpios_cmd_t;
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/* Valid ioctls */
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#define ZPIOS_CFG _IOWR('f', 101, zpios_cfg_t)
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#define ZPIOS_CMD _IOWR('f', 102, zpios_cmd_t)
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/* Valid configuration commands */
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#define ZPIOS_CFG_BUFFER_CLEAR 0x001 /* Clear text buffer */
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#define ZPIOS_CFG_BUFFER_SIZE 0x002 /* Resize text buffer */
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#ifndef NSEC_PER_SEC
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#define NSEC_PER_SEC 1000000000L
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#endif
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static inline
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void zpios_timespec_normalize(zpios_timespec_t *ts, uint32_t sec, uint32_t nsec)
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{
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while (nsec >= NSEC_PER_SEC) {
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nsec -= NSEC_PER_SEC;
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sec++;
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}
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while (nsec < 0) {
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nsec += NSEC_PER_SEC;
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sec--;
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}
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ts->ts_sec = sec;
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ts->ts_nsec = nsec;
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}
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static inline
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zpios_timespec_t zpios_timespec_add(zpios_timespec_t lhs, zpios_timespec_t rhs)
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{
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zpios_timespec_t ts_delta;
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zpios_timespec_normalize(&ts_delta, lhs.ts_sec + rhs.ts_sec,
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lhs.ts_nsec + rhs.ts_nsec);
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return ts_delta;
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}
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static inline
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zpios_timespec_t zpios_timespec_sub(zpios_timespec_t lhs, zpios_timespec_t rhs)
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{
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zpios_timespec_t ts_delta;
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zpios_timespec_normalize(&ts_delta, lhs.ts_sec - rhs.ts_sec,
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lhs.ts_nsec - rhs.ts_nsec);
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return ts_delta;
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}
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#ifdef _KERNEL
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static inline
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zpios_timespec_t zpios_timespec_now(void)
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{
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zpios_timespec_t zts_now;
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struct timespec ts_now;
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ts_now = current_kernel_time();
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zts_now.ts_sec = ts_now.tv_sec;
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zts_now.ts_nsec = ts_now.tv_nsec;
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return zts_now;
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}
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#else
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static inline
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double zpios_timespec_to_double(zpios_timespec_t ts)
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{
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return ((double)(ts.ts_sec) +
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((double)(ts.ts_nsec) / (double)(NSEC_PER_SEC)));
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}
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#endif /* _KERNEL */
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#endif /* _ZPIOS_CTL_H */
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@@ -0,0 +1,138 @@
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/*****************************************************************************\
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* ZPIOS is a heavily modified version of the original PIOS test code.
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* It is designed to have the test code running in the Linux kernel
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* against ZFS while still being flexibly controled from user space.
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*
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* Copyright (C) 2008-2010 Lawrence Livermore National Security, LLC.
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* Produced at Lawrence Livermore National Laboratory (cf, DISCLAIMER).
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* Written by Brian Behlendorf <behlendorf1@llnl.gov>.
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* LLNL-CODE-403049
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*
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* Original PIOS Test Code
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* Copyright (C) 2004 Cluster File Systems, Inc.
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* Written by Peter Braam <braam@clusterfs.com>
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* Atul Vidwansa <atul@clusterfs.com>
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* Milind Dumbare <milind@clusterfs.com>
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*
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* This file is part of ZFS on Linux.
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* For details, see <http://github.com/behlendorf/zfs/>.
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*
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* ZPIOS is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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* ZPIOS is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with ZPIOS. If not, see <http://www.gnu.org/licenses/>.
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\*****************************************************************************/
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#ifndef _ZPIOS_INTERNAL_H
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#define _ZPIOS_INTERNAL_H
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#include "zpios-ctl.h"
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#define OBJ_SIZE 64
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struct run_args;
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typedef struct dmu_obj {
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objset_t *os;
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uint64_t obj;
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} dmu_obj_t;
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/* thread doing the IO data */
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typedef struct thread_data {
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struct run_args *run_args;
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int thread_no;
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int rc;
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zpios_stats_t stats;
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kmutex_t lock;
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} thread_data_t;
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/* region for IO data */
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typedef struct zpios_region {
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__u64 wr_offset;
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__u64 rd_offset;
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__u64 init_offset;
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__u64 max_offset;
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dmu_obj_t obj;
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zpios_stats_t stats;
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kmutex_t lock;
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} zpios_region_t;
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/* arguments for one run */
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typedef struct run_args {
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/* Config args */
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int id;
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char pool[ZPIOS_NAME_SIZE];
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__u64 chunk_size;
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__u32 thread_count;
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__u32 region_count;
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__u64 region_size;
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__u64 offset;
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__u32 region_noise;
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__u32 chunk_noise;
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__u32 thread_delay;
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__u32 flags;
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char pre[ZPIOS_PATH_SIZE];
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char post[ZPIOS_PATH_SIZE];
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char log[ZPIOS_PATH_SIZE];
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/* Control data */
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objset_t *os;
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wait_queue_head_t waitq;
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volatile uint64_t threads_done;
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kmutex_t lock_work;
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kmutex_t lock_ctl;
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__u32 region_next;
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/* Results data */
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struct file *file;
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zpios_stats_t stats;
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thread_data_t **threads;
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zpios_region_t regions[0]; /* Must be last element */
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} run_args_t;
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#define ZPIOS_INFO_BUFFER_SIZE 65536
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#define ZPIOS_INFO_BUFFER_REDZONE 1024
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typedef struct zpios_info {
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spinlock_t info_lock;
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int info_size;
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char *info_buffer;
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char *info_head; /* Internal kernel use only */
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} zpios_info_t;
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#define zpios_print(file, format, args...) \
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({ zpios_info_t *_info_ = (zpios_info_t *)file->private_data; \
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int _rc_; \
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\
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ASSERT(_info_); \
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ASSERT(_info_->info_buffer); \
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\
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spin_lock(&_info_->info_lock); \
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\
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/* Don't allow the kernel to start a write in the red zone */ \
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if ((int)(_info_->info_head - _info_->info_buffer) > \
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(_info_->info_size - ZPIOS_INFO_BUFFER_REDZONE)) { \
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_rc_ = -EOVERFLOW; \
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} else { \
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_rc_ = sprintf(_info_->info_head, format, args); \
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if (_rc_ >= 0) \
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_info_->info_head += _rc_; \
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} \
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\
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spin_unlock(&_info_->info_lock); \
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_rc_; \
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})
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#define zpios_vprint(file, test, format, args...) \
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zpios_print(file, "%*s: " format, ZPIOS_NAME_SIZE, test, args)
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#endif /* _ZPIOS_INTERNAL_H */
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