mirrors
/
linux-stable
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
1
0
Fork 0
Code Issues Releases Wiki Activity

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: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Masami Hiramatsu 2021-09-05 00:54:09 +09:00 committed by Steven Rostedt (VMware)
parent 4b6b08f2e4
commit 40caa127f3
1 changed files with 12 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
init/main.c
View File

@ -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();