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eb6c7cd036
Hi, The following patch makes udev/udevstart be a common binary. First, doing this grows udev by a total of 1.8kB (ppc32, stripped) whereas udevstart by itself is 6.4kB. I know you mentioned being able to replace udevstart with a script, but at 1.8kB I don't think it'll be easy to beat this with size there. Next, the following are by-eye timings of before, after, and with devfs on a slow, but still usable embedded platform (config stripped down to more-or-less bare for ramdisk): -- Embedded Planet RPX LITE, 64Mhz MPC 823e -- devfs : 15.333s, 15.253s, 14.988s (15.191s avg) udev-pristine : 18.675s, 18.079s, 18.418s (18.390s avg) udev-multi : 14.587s, 14.747s, 14.868s (14.734s avg) The patch ends up being rather large to add this, as in doing so I ended up making all refs (that I hit..) to devpath/subsystem be marked as 'const'. Signed-off-by: Tom Rini <trini@kernel.crashing.org> Signed-off-by: Greg Kroah-Hartman <greg@kroah.com>
90 lines
2.6 KiB
C
90 lines
2.6 KiB
C
/*
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* udev.h
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*
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* Userspace devfs
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*
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* Copyright (C) 2003 Greg Kroah-Hartman <greg@kroah.com>
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*
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* This program 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 version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License 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 this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#ifndef _UDEV_H_
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#define _UDEV_H_
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#include <sys/param.h>
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#include "libsysfs/sysfs/libsysfs.h"
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#define COMMENT_CHARACTER '#'
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#define NAME_SIZE 256
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#define OWNER_SIZE 30
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#define GROUP_SIZE 30
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#define MODE_SIZE 8
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#define ACTION_SIZE 30
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#define DEVPATH_SIZE 255
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#define SUBSYSTEM_SIZE 30
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/* length of public data */
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#define UDEVICE_LEN (offsetof(struct udevice, bus_id))
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struct udevice {
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char name[NAME_SIZE];
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char owner[OWNER_SIZE];
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char group[GROUP_SIZE];
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char type;
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int major;
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int minor;
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unsigned int mode; /* not mode_t due to conflicting definitions in different libcs */
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char symlink[NAME_SIZE];
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int partitions;
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int config_line;
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char config_file[NAME_SIZE];
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long config_uptime;
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/* private data that help us in building strings */
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char bus_id[SYSFS_NAME_LEN];
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char program_result[NAME_SIZE];
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char kernel_number[NAME_SIZE];
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char kernel_name[NAME_SIZE];
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};
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extern int udev_add_device(const char *path, const char *subsystem, int fake);
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extern int udev_remove_device(const char *path, const char *subsystem);
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extern void udev_init_config(void);
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extern int udev_start(void);
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extern int __udev_hotplug(char *action, const char *devpath,
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const char *subsystem);
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extern int parse_get_pair(char **orig_string, char **left, char **right);
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extern void dev_d_send(struct udevice *dev, const char *subsystem,
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const char *devpath);
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extern char **main_argv;
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extern char **main_envp;
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extern char sysfs_path[SYSFS_PATH_MAX];
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extern char udev_root[PATH_MAX];
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extern char udev_db_filename[PATH_MAX+NAME_MAX];
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extern char udev_permissions_filename[PATH_MAX+NAME_MAX];
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extern char udev_config_filename[PATH_MAX+NAME_MAX];
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extern char udev_rules_filename[PATH_MAX+NAME_MAX];
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extern char default_mode_str[MODE_SIZE];
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extern char default_owner_str[OWNER_SIZE];
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extern char default_group_str[GROUP_SIZE];
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extern int udev_log;
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extern int udev_sleep;
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extern int udev_dev_d;
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#endif
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