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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
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@ -35,6 +35,14 @@ config CONFIG_FEATURE_INIT_COREDUMPS
core file sizes. If this option is disabled, processes core file sizes. If this option is disabled, processes
will not generate any core files. 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 config CONFIG_FEATURE_EXTRA_QUIET
bool " Should init be _extra_ quiet on boot?" bool " Should init be _extra_ quiet on boot?"
default y default y

6
init/init.c
View File

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