Commit 40caa127 authored by Masami Hiramatsu's avatar Masami Hiramatsu Committed by Steven Rostedt (VMware)
Browse files

init: bootconfig: Remove all bootconfig data when the init memory is removed 

Since the bootconfig is used only in the init functions,
it doesn't need to keep the data after boot. Free it when
the init memory is removed.

Link: https://lkml.kernel.org/r/163077084958.222577.5924961258513004428.stgit@devnote2



Signed-off-by: default avatarMasami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
parent 4b6b08f2

init/main.c

+12 −2
Original line number Diff line number Diff line
@@ -468,7 +468,12 @@ static void __init setup_boot_config(void) 
	return;

}



#else

static void __init exit_boot_config(void)

{

	xbc_destroy_all();

}



#else	/* !CONFIG_BOOT_CONFIG */



static void __init setup_boot_config(void)

{
@@ -481,7 +486,11 @@ static int __init warn_bootconfig(char *str) 
	pr_warn("WARNING: 'bootconfig' found on the kernel command line but CONFIG_BOOT_CONFIG is not set.\n");

	return 0;

}

#endif



#define exit_boot_config()	do {} while (0)



#endif	/* CONFIG_BOOT_CONFIG */



early_param("bootconfig", warn_bootconfig);



/* Change NUL term back to "=", to make "param" the whole string. */
@@ -1493,6 +1502,7 @@ static int __ref kernel_init(void *unused) 
	kprobe_free_init_mem();

	ftrace_free_init_mem();

	kgdb_free_init_mem();

	exit_boot_config();

	free_initmem();

	mark_readonly();