libfio.c - pub/scm/linux/kernel/git/axboe/fio - Git at Google

 /*
  * fio - the flexible io tester
  *
  * Copyright (C) 2005 Jens Axboe <axboe@suse.de>
  * Copyright (C) 2006-2012 Jens Axboe <axboe@kernel.dk>
  *
  * The license below covers all files distributed with fio unless otherwise
  * noted in the file itself.
  *
  *  This program is free software; you can redistribute it and/or modify
  *  it under the terms of the GNU General Public License version 2 as
  *  published by the Free Software Foundation.
  *
  *  This program is distributed in the hope that it will be useful,
  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  *  GNU General Public License for more details.
  *
  *  You should have received a copy of the GNU General Public License
  *  along with this program; if not, write to the Free Software
  *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  *
  */

 #include <string.h>
 #include <signal.h>
 #include <stdint.h>
 #include <locale.h>
 #include <fcntl.h>

 #include "fio.h"
 #include "smalloc.h"
 #include "os/os.h"
 #include "filelock.h"
 #include "helper_thread.h"
 #include "filehash.h"

 FLIST_HEAD(disk_list);

 unsigned long arch_flags = 0;

 uintptr_t page_mask = 0;
 uintptr_t page_size = 0;

 /* see os/os.h */
 static const char *fio_os_strings[os_nr] = {
 	"Invalid",
 	"Linux",
 	"AIX",
 	"FreeBSD",
 	"HP-UX",
 	"OSX",
 	"NetBSD",
 	"OpenBSD",
 	"Solaris",
 	"Windows",
 	"Android",
 	"DragonFly",
 };

 /* see arch/arch.h */
 static const char *fio_arch_strings[arch_nr] = {
 	"Invalid",
 	"x86-64",
 	"x86",
 	"ppc",
 	"ia64",
 	"s390",
 	"alpha",
 	"sparc",
 	"sparc64",
 	"arm",
 	"sh",
 	"hppa",
 	"mips",
 	"aarch64",
 	"generic"
 };

 static void reset_io_counters(struct thread_data *td, int all)
 {
 	int ddir;

 	if (all) {
 		for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++) {
 			td->stat_io_bytes[ddir] = 0;
 			td->this_io_bytes[ddir] = 0;
 			td->stat_io_blocks[ddir] = 0;
 			td->this_io_blocks[ddir] = 0;
 			td->rate_bytes[ddir] = 0;
 			td->rate_blocks[ddir] = 0;
 			td->bytes_done[ddir] = 0;
 			td->rate_io_issue_bytes[ddir] = 0;
 			td->rate_next_io_time[ddir] = 0;
 			td->last_usec[ddir] = 0;
 		}
 	}

 	td->zone_bytes = 0;

 	td->last_was_sync = false;
 	td->rwmix_issues = 0;

 	/*
 	 * reset file done count if we are to start over
 	 */
 	if (td->o.time_based || td->o.loops || td->o.do_verify)
 		td->nr_done_files = 0;
 }

 void clear_io_state(struct thread_data *td, int all)
 {
 	struct fio_file *f;
 	unsigned int i;

 	reset_io_counters(td, all);

 	close_files(td);
 	for_each_file(td, f, i) {
 		fio_file_clear_done(f);
 		f->file_offset = get_start_offset(td, f);
 	}

 	/*
 	 * Re-Seed random number generator if rand_repeatable is true
 	 */
 	if (td->o.rand_repeatable)
 		td_fill_rand_seeds(td);
 }

 void reset_all_stats(struct thread_data *td)
 {
 	int i;

 	reset_io_counters(td, 1);

 	for (i = 0; i < DDIR_RWDIR_CNT; i++) {
 		td->io_bytes[i] = 0;
 		td->io_blocks[i] = 0;
 		td->io_issues[i] = 0;
 		td->ts.total_io_u[i] = 0;
 		td->ts.runtime[i] = 0;
 		td->rwmix_issues = 0;
 	}

 	set_epoch_time(td, td->o.log_unix_epoch);
 	memcpy(&td->start, &td->epoch, sizeof(td->epoch));
 	memcpy(&td->iops_sample_time, &td->epoch, sizeof(td->epoch));
 	memcpy(&td->bw_sample_time, &td->epoch, sizeof(td->epoch));
 	memcpy(&td->ss.prev_time, &td->epoch, sizeof(td->epoch));

 	lat_target_reset(td);
 	clear_rusage_stat(td);
 	helper_reset();
 }

 void reset_fio_state(void)
 {
 	int i;

 	groupid = 0;
 	thread_number = 0;
 	cur_segment = 0;
 	for (i = 0; i < nr_segments; i++)
 		segments[i].nr_threads = 0;
 	stat_number = 0;
 	done_secs = 0;
 }

 const char *fio_get_os_string(int nr)
 {
 	if (nr < os_nr)
 		return fio_os_strings[nr];

 	return NULL;
 }

 const char *fio_get_arch_string(int nr)
 {
 	if (nr < arch_nr)
 		return fio_arch_strings[nr];

 	return NULL;
 }

 static const char *td_runstates[] = {
 	"NOT_CREATED",
 	"CREATED",
 	"INITIALIZED",
 	"RAMP",
 	"SETTING_UP",
 	"RUNNING",
 	"PRE_READING",
 	"VERIFYING",
 	"FSYNCING",
 	"FINISHING",
 	"EXITED",
 	"REAPED",
 };

 const char *runstate_to_name(int runstate)
 {
 	compiletime_assert(TD_LAST == 12, "td runstate list");
 	if (runstate >= 0 && runstate < TD_LAST)
 		return td_runstates[runstate];

 	return "invalid";
 }

 void td_set_runstate(struct thread_data *td, int runstate)
 {
 	if (td->runstate == runstate)
 		return;

 	dprint(FD_PROCESS, "pid=%d: runstate %s -> %s\n", (int) td->pid,
 						runstate_to_name(td->runstate),
 						runstate_to_name(runstate));
 	td->runstate = runstate;
 }

 int td_bump_runstate(struct thread_data *td, int new_state)
 {
 	int old_state = td->runstate;

 	td_set_runstate(td, new_state);
 	return old_state;
 }

 void td_restore_runstate(struct thread_data *td, int old_state)
 {
 	td_set_runstate(td, old_state);
 }

 void fio_mark_td_terminate(struct thread_data *td)
 {
 	fio_gettime(&td->terminate_time, NULL);
 	write_barrier();
 	td->terminate = true;
 }

 void fio_terminate_threads(unsigned int group_id, unsigned int terminate)
 {
 	struct thread_data *td;
 	pid_t pid = getpid();
 	int i;

 	dprint(FD_PROCESS, "terminate group_id=%d\n", group_id);

 	for_each_td(td, i) {
 		if ((terminate == TERMINATE_GROUP && group_id == TERMINATE_ALL) ||
 		    (terminate == TERMINATE_GROUP && group_id == td->groupid) ||
 		    (terminate == TERMINATE_STONEWALL && td->runstate >= TD_RUNNING) ||
 		    (terminate == TERMINATE_ALL)) {
 			dprint(FD_PROCESS, "setting terminate on %s/%d\n",
 						td->o.name, (int) td->pid);

 			if (td->terminate)
 				continue;

 			fio_mark_td_terminate(td);
 			td->o.start_delay = 0;

 			/*
 			 * if the thread is running, just let it exit
 			 */
 			if (!td->pid || pid == td->pid)
 				continue;
 			else if (td->runstate < TD_RAMP)
 				kill(td->pid, SIGTERM);
 			else {
 				struct ioengine_ops *ops = td->io_ops;

 				if (ops && ops->terminate)
 					ops->terminate(td);
 			}
 		}
 	}
 }

 int fio_running_or_pending_io_threads(void)
 {
 	struct thread_data *td;
 	int i;
 	int nr_io_threads = 0;

 	for_each_td(td, i) {
 		if (td->io_ops_init && td_ioengine_flagged(td, FIO_NOIO))
 			continue;
 		nr_io_threads++;
 		if (td->runstate < TD_EXITED)
 			return 1;
 	}

 	if (!nr_io_threads)
 		return -1; /* we only had cpuio threads to begin with */
 	return 0;
 }

 int fio_set_fd_nonblocking(int fd, const char *who)
 {
 	int flags;

 	flags = fcntl(fd, F_GETFL);
 	if (flags < 0)
 		log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno));
 	else {
 		int new_flags = flags | O_NONBLOCK;

 		new_flags = fcntl(fd, F_SETFL, new_flags);
 		if (new_flags < 0)
 			log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno));
 	}

 	return flags;
 }

 enum {
 	ENDIAN_INVALID_BE = 1,
 	ENDIAN_INVALID_LE,
 	ENDIAN_INVALID_CONFIG,
 	ENDIAN_BROKEN,
 };

 static int endian_check(void)
 {
 	union {
 		uint8_t c[8];
 		uint64_t v;
 	} u;
 	int le = 0, be = 0;

 	u.v = 0x12;
 	if (u.c[7] == 0x12)
 		be = 1;
 	else if (u.c[0] == 0x12)
 		le = 1;

 #if defined(CONFIG_LITTLE_ENDIAN)
 	if (be)
 		return ENDIAN_INVALID_BE;
 #elif defined(CONFIG_BIG_ENDIAN)
 	if (le)
 		return ENDIAN_INVALID_LE;
 #else
 	return ENDIAN_INVALID_CONFIG;
 #endif

 	if (!le && !be)
 		return ENDIAN_BROKEN;

 	return 0;
 }

 int initialize_fio(char *envp[])
 {
 	long ps;
 	int err;

 	/*
 	 * We need these to be properly 64-bit aligned, otherwise we
 	 * can run into problems on archs that fault on unaligned fp
 	 * access (ARM).
 	 */
 	compiletime_assert((offsetof(struct thread_data, ts) % sizeof(void *)) == 0, "ts");
 	compiletime_assert((offsetof(struct thread_stat, percentile_list) % 8) == 0, "stat percentile_list");
 	compiletime_assert((offsetof(struct thread_stat, total_run_time) % 8) == 0, "total_run_time");
 	compiletime_assert((offsetof(struct thread_stat, total_err_count) % 8) == 0, "total_err_count");
 	compiletime_assert((offsetof(struct thread_stat, latency_percentile) % 8) == 0, "stat latency_percentile");
 	compiletime_assert((offsetof(struct thread_data, ts.clat_stat) % 8) == 0, "ts.clat_stat");
 	compiletime_assert((offsetof(struct thread_options_pack, zipf_theta) % 8) == 0, "zipf_theta");
 	compiletime_assert((offsetof(struct thread_options_pack, pareto_h) % 8) == 0, "pareto_h");
 	compiletime_assert((offsetof(struct thread_options_pack, percentile_list) % 8) == 0, "percentile_list");
 	compiletime_assert((offsetof(struct thread_options_pack, latency_percentile) % 8) == 0, "latency_percentile");
 	compiletime_assert((offsetof(struct jobs_eta, m_rate) % 8) == 0, "m_rate");

 	compiletime_assert(__TD_F_LAST <= TD_ENG_FLAG_SHIFT, "TD_ENG_FLAG_SHIFT");
 	compiletime_assert(BSSPLIT_MAX <= ZONESPLIT_MAX, "bsssplit/zone max");

 	err = endian_check();
 	if (err) {
 		log_err("fio: endianness settings appear wrong.\n");
 		switch (err) {
 		case ENDIAN_INVALID_BE:
 			log_err("fio: got big-endian when configured for little\n");
 			break;
 		case ENDIAN_INVALID_LE:
 			log_err("fio: got little-endian when configured for big\n");
 			break;
 		case ENDIAN_INVALID_CONFIG:
 			log_err("fio: not configured to any endianness\n");
 			break;
 		case ENDIAN_BROKEN:
 			log_err("fio: failed to detect endianness\n");
 			break;
 		default:
 			assert(0);
 			break;
 		}
 		log_err("fio: please report this to fio@vger.kernel.org\n");
 		return 1;
 	}

 #if !defined(CONFIG_GETTIMEOFDAY) && !defined(CONFIG_CLOCK_GETTIME)
 #error "No available clock source!"
 #endif

 	arch_init(envp);

 	sinit();

 	if (fio_filelock_init()) {
 		log_err("fio: failed initializing filelock subsys\n");
 		return 1;
 	}

 	file_hash_init();

 	/*
 	 * We need locale for number printing, if it isn't set then just
 	 * go with the US format.
 	 */
 	if (!getenv("LC_NUMERIC"))
 		setlocale(LC_NUMERIC, "en_US");

 	ps = sysconf(_SC_PAGESIZE);
 	if (ps < 0) {
 		log_err("Failed to get page size\n");
 		return 1;
 	}

 	page_size = ps;
 	page_mask = ps - 1;

 	fio_keywords_init();
 	return 0;
 }

 void deinitialize_fio(void)
 {
 	fio_keywords_exit();
 }
	/*
	* fio - the flexible io tester
	*
	* Copyright (C) 2005 Jens Axboe <axboe@suse.de>
	* Copyright (C) 2006-2012 Jens Axboe <axboe@kernel.dk>
	*
	* The license below covers all files distributed with fio unless otherwise
	* noted in the file itself.
	*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License version 2 as
	* published by the Free Software Foundation.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
	*
	*/

	#include <string.h>
	#include <signal.h>
	#include <stdint.h>
	#include <locale.h>
	#include <fcntl.h>

	#include "fio.h"
	#include "smalloc.h"
	#include "os/os.h"
	#include "filelock.h"
	#include "helper_thread.h"
	#include "filehash.h"

	FLIST_HEAD(disk_list);

	unsigned long arch_flags = 0;

	uintptr_t page_mask = 0;
	uintptr_t page_size = 0;

	/* see os/os.h */
	static const char *fio_os_strings[os_nr] = {
	"Invalid",
	"Linux",
	"AIX",
	"FreeBSD",
	"HP-UX",
	"OSX",
	"NetBSD",
	"OpenBSD",
	"Solaris",
	"Windows",
	"Android",
	"DragonFly",
	};

	/* see arch/arch.h */
	static const char *fio_arch_strings[arch_nr] = {
	"Invalid",
	"x86-64",
	"x86",
	"ppc",
	"ia64",
	"s390",
	"alpha",
	"sparc",
	"sparc64",
	"arm",
	"sh",
	"hppa",
	"mips",
	"aarch64",
	"generic"
	};

	static void reset_io_counters(struct thread_data *td, int all)
	{
	int ddir;

	if (all) {
	for (ddir = 0; ddir < DDIR_RWDIR_CNT; ddir++) {
	td->stat_io_bytes[ddir] = 0;
	td->this_io_bytes[ddir] = 0;
	td->stat_io_blocks[ddir] = 0;
	td->this_io_blocks[ddir] = 0;
	td->rate_bytes[ddir] = 0;
	td->rate_blocks[ddir] = 0;
	td->bytes_done[ddir] = 0;
	td->rate_io_issue_bytes[ddir] = 0;
	td->rate_next_io_time[ddir] = 0;
	td->last_usec[ddir] = 0;
	}
	}

	td->zone_bytes = 0;

	td->last_was_sync = false;
	td->rwmix_issues = 0;

	/*
	* reset file done count if we are to start over
	*/
	if (td->o.time_based \|\| td->o.loops \|\| td->o.do_verify)
	td->nr_done_files = 0;
	}

	void clear_io_state(struct thread_data *td, int all)
	{
	struct fio_file *f;
	unsigned int i;

	reset_io_counters(td, all);

	close_files(td);
	for_each_file(td, f, i) {
	fio_file_clear_done(f);
	f->file_offset = get_start_offset(td, f);
	}

	/*
	* Re-Seed random number generator if rand_repeatable is true
	*/
	if (td->o.rand_repeatable)
	td_fill_rand_seeds(td);
	}

	void reset_all_stats(struct thread_data *td)
	{
	int i;

	reset_io_counters(td, 1);

	for (i = 0; i < DDIR_RWDIR_CNT; i++) {
	td->io_bytes[i] = 0;
	td->io_blocks[i] = 0;
	td->io_issues[i] = 0;
	td->ts.total_io_u[i] = 0;
	td->ts.runtime[i] = 0;
	td->rwmix_issues = 0;
	}

	set_epoch_time(td, td->o.log_unix_epoch);
	memcpy(&td->start, &td->epoch, sizeof(td->epoch));
	memcpy(&td->iops_sample_time, &td->epoch, sizeof(td->epoch));
	memcpy(&td->bw_sample_time, &td->epoch, sizeof(td->epoch));
	memcpy(&td->ss.prev_time, &td->epoch, sizeof(td->epoch));

	lat_target_reset(td);
	clear_rusage_stat(td);
	helper_reset();
	}

	void reset_fio_state(void)
	{
	int i;

	groupid = 0;
	thread_number = 0;
	cur_segment = 0;
	for (i = 0; i < nr_segments; i++)
	segments[i].nr_threads = 0;
	stat_number = 0;
	done_secs = 0;
	}

	const char *fio_get_os_string(int nr)
	{
	if (nr < os_nr)
	return fio_os_strings[nr];

	return NULL;
	}

	const char *fio_get_arch_string(int nr)
	{
	if (nr < arch_nr)
	return fio_arch_strings[nr];

	return NULL;
	}

	static const char *td_runstates[] = {
	"NOT_CREATED",
	"CREATED",
	"INITIALIZED",
	"RAMP",
	"SETTING_UP",
	"RUNNING",
	"PRE_READING",
	"VERIFYING",
	"FSYNCING",
	"FINISHING",
	"EXITED",
	"REAPED",
	};

	const char *runstate_to_name(int runstate)
	{
	compiletime_assert(TD_LAST == 12, "td runstate list");
	if (runstate >= 0 && runstate < TD_LAST)
	return td_runstates[runstate];

	return "invalid";
	}

	void td_set_runstate(struct thread_data *td, int runstate)
	{
	if (td->runstate == runstate)
	return;

	dprint(FD_PROCESS, "pid=%d: runstate %s -> %s\n", (int) td->pid,
	runstate_to_name(td->runstate),
	runstate_to_name(runstate));
	td->runstate = runstate;
	}

	int td_bump_runstate(struct thread_data *td, int new_state)
	{
	int old_state = td->runstate;

	td_set_runstate(td, new_state);
	return old_state;
	}

	void td_restore_runstate(struct thread_data *td, int old_state)
	{
	td_set_runstate(td, old_state);
	}

	void fio_mark_td_terminate(struct thread_data *td)
	{
	fio_gettime(&td->terminate_time, NULL);
	write_barrier();
	td->terminate = true;
	}

	void fio_terminate_threads(unsigned int group_id, unsigned int terminate)
	{
	struct thread_data *td;
	pid_t pid = getpid();
	int i;

	dprint(FD_PROCESS, "terminate group_id=%d\n", group_id);

	for_each_td(td, i) {
	if ((terminate == TERMINATE_GROUP && group_id == TERMINATE_ALL) \|\|
	(terminate == TERMINATE_GROUP && group_id == td->groupid) \|\|
	(terminate == TERMINATE_STONEWALL && td->runstate >= TD_RUNNING) \|\|
	(terminate == TERMINATE_ALL)) {
	dprint(FD_PROCESS, "setting terminate on %s/%d\n",
	td->o.name, (int) td->pid);

	if (td->terminate)
	continue;

	fio_mark_td_terminate(td);
	td->o.start_delay = 0;

	/*
	* if the thread is running, just let it exit
	*/
	if (!td->pid \|\| pid == td->pid)
	continue;
	else if (td->runstate < TD_RAMP)
	kill(td->pid, SIGTERM);
	else {
	struct ioengine_ops *ops = td->io_ops;

	if (ops && ops->terminate)
	ops->terminate(td);
	}
	}
	}
	}

	int fio_running_or_pending_io_threads(void)
	{
	struct thread_data *td;
	int i;
	int nr_io_threads = 0;

	for_each_td(td, i) {
	if (td->io_ops_init && td_ioengine_flagged(td, FIO_NOIO))
	continue;
	nr_io_threads++;
	if (td->runstate < TD_EXITED)
	return 1;
	}

	if (!nr_io_threads)
	return -1; /* we only had cpuio threads to begin with */
	return 0;
	}

	int fio_set_fd_nonblocking(int fd, const char *who)
	{
	int flags;

	flags = fcntl(fd, F_GETFL);
	if (flags < 0)
	log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno));
	else {
	int new_flags = flags \| O_NONBLOCK;

	new_flags = fcntl(fd, F_SETFL, new_flags);
	if (new_flags < 0)
	log_err("fio: %s failed to get file flags: %s\n", who, strerror(errno));
	}

	return flags;
	}

	enum {
	ENDIAN_INVALID_BE = 1,
	ENDIAN_INVALID_LE,
	ENDIAN_INVALID_CONFIG,
	ENDIAN_BROKEN,
	};

	static int endian_check(void)
	{
	union {
	uint8_t c[8];
	uint64_t v;
	} u;
	int le = 0, be = 0;

	u.v = 0x12;
	if (u.c[7] == 0x12)
	be = 1;
	else if (u.c[0] == 0x12)
	le = 1;

	#if defined(CONFIG_LITTLE_ENDIAN)
	if (be)
	return ENDIAN_INVALID_BE;
	#elif defined(CONFIG_BIG_ENDIAN)
	if (le)
	return ENDIAN_INVALID_LE;
	#else
	return ENDIAN_INVALID_CONFIG;
	#endif

	if (!le && !be)
	return ENDIAN_BROKEN;

	return 0;
	}

	int initialize_fio(char *envp[])
	{
	long ps;
	int err;

	/*
	* We need these to be properly 64-bit aligned, otherwise we
	* can run into problems on archs that fault on unaligned fp
	* access (ARM).
	*/
	compiletime_assert((offsetof(struct thread_data, ts) % sizeof(void *)) == 0, "ts");
	compiletime_assert((offsetof(struct thread_stat, percentile_list) % 8) == 0, "stat percentile_list");
	compiletime_assert((offsetof(struct thread_stat, total_run_time) % 8) == 0, "total_run_time");
	compiletime_assert((offsetof(struct thread_stat, total_err_count) % 8) == 0, "total_err_count");
	compiletime_assert((offsetof(struct thread_stat, latency_percentile) % 8) == 0, "stat latency_percentile");
	compiletime_assert((offsetof(struct thread_data, ts.clat_stat) % 8) == 0, "ts.clat_stat");
	compiletime_assert((offsetof(struct thread_options_pack, zipf_theta) % 8) == 0, "zipf_theta");
	compiletime_assert((offsetof(struct thread_options_pack, pareto_h) % 8) == 0, "pareto_h");
	compiletime_assert((offsetof(struct thread_options_pack, percentile_list) % 8) == 0, "percentile_list");
	compiletime_assert((offsetof(struct thread_options_pack, latency_percentile) % 8) == 0, "latency_percentile");
	compiletime_assert((offsetof(struct jobs_eta, m_rate) % 8) == 0, "m_rate");

	compiletime_assert(__TD_F_LAST <= TD_ENG_FLAG_SHIFT, "TD_ENG_FLAG_SHIFT");
	compiletime_assert(BSSPLIT_MAX <= ZONESPLIT_MAX, "bsssplit/zone max");

	err = endian_check();
	if (err) {
	log_err("fio: endianness settings appear wrong.\n");
	switch (err) {
	case ENDIAN_INVALID_BE:
	log_err("fio: got big-endian when configured for little\n");
	break;
	case ENDIAN_INVALID_LE:
	log_err("fio: got little-endian when configured for big\n");
	break;
	case ENDIAN_INVALID_CONFIG:
	log_err("fio: not configured to any endianness\n");
	break;
	case ENDIAN_BROKEN:
	log_err("fio: failed to detect endianness\n");
	break;
	default:
	assert(0);
	break;
	}
	log_err("fio: please report this to fio@vger.kernel.org\n");
	return 1;
	}

	#if !defined(CONFIG_GETTIMEOFDAY) && !defined(CONFIG_CLOCK_GETTIME)
	#error "No available clock source!"
	#endif

	arch_init(envp);

	sinit();

	if (fio_filelock_init()) {
	log_err("fio: failed initializing filelock subsys\n");
	return 1;
	}

	file_hash_init();

	/*
	* We need locale for number printing, if it isn't set then just
	* go with the US format.
	*/
	if (!getenv("LC_NUMERIC"))
	setlocale(LC_NUMERIC, "en_US");

	ps = sysconf(_SC_PAGESIZE);
	if (ps < 0) {
	log_err("Failed to get page size\n");
	return 1;
	}

	page_size = ps;
	page_mask = ps - 1;

	fio_keywords_init();
	return 0;
	}

	void deinitialize_fio(void)
	{
	fio_keywords_exit();
	}