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2005-07-05 Shaun Jackman <sjackman@gmail.com>

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* init/Config.in (CONFIG_FEATURE_INIT_SWAPON): New option.
        * init/init.c (check_memory): Disable the swapon feature unless
        CONFIG_FEATURE_INIT_SWAPON is defined.
This commit is contained in:
Mike Frysinger 2005-07-06 04:39:08 +00:00
parent 72a4c33568
commit 95ef16528c
2 changed files with 14 additions and 0 deletions
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8
init/Config.in
View File

@ -35,6 +35,14 @@ config CONFIG_FEATURE_INIT_COREDUMPS
core file sizes. If this option is disabled, processes
will not generate any core files.
config CONFIG_FEATURE_INIT_SWAPON
bool " Should init run swapon if short on memory?"
default y
depends on CONFIG_INIT
help
If the system has less than one megabyte of total memory, init
will run '/sbin/swapon -a' to add swap memory.
config CONFIG_FEATURE_EXTRA_QUIET
bool " Should init be _extra_ quiet on boot?"
default y

6
init/init.c
View File

@ -309,6 +309,7 @@ static void set_term(int fd)
tcsetattr(fd, TCSANOW, &tty);
}
#ifdef CONFIG_FEATURE_INIT_SWAPON
/* How much memory does this machine have?
Units are kBytes to avoid overflow on 4GB machines */
static unsigned int check_free_memory(void)
@ -337,6 +338,7 @@ static unsigned int check_free_memory(void)
return(result * u);
}
}
#endif /* CONFIG_FEATURE_INIT_SWAPON */
static void console_init(void)
{
@ -910,6 +912,7 @@ static void delete_init_action(struct init_action *action)
}
}
#ifdef CONFIG_FEATURE_INIT_SWAPON
/* Make sure there is enough memory to do something useful. *
* Calls "swapon -a" if needed so be sure /etc/fstab is present... */
static void check_memory(void)
@ -937,6 +940,9 @@ static void check_memory(void)
message(CONSOLE, "Sorry, your computer does not have enough memory.");
loop_forever();
}
#else
# define check_memory()
#endif /* CONFIG_FEATURE_INIT_SWAPON */
/* NOTE that if CONFIG_FEATURE_USE_INITTAB is NOT defined,
* then parse_inittab() simply adds in some default