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init: initialize ramdisk_execute_command at compile time 

Set ramdisk_execute_command to "/init" at compile time.  The command
line can still override it, but this saves a few instructions and
removes a NULL check.

Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Christoph Hellwig 2020-06-07 09:06:29 +02:00
parent bcbacc4909
commit 916db733de
1 changed files with 1 additions and 5 deletions
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6
init/main.c
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@ -154,7 +154,7 @@ static bool initargs_found;
#endif #endif
static char *execute_command; static char *execute_command;
static char *ramdisk_execute_command; static char *ramdisk_execute_command = "/init";
/* /*
* Used to generate warnings if static_key manipulation functions are used * Used to generate warnings if static_key manipulation functions are used
@ -1514,10 +1514,6 @@ static noinline void __init kernel_init_freeable(void)
* check if there is an early userspace init. If yes, let it do all * check if there is an early userspace init. If yes, let it do all
* the work * the work
*/ */
if (!ramdisk_execute_command)
ramdisk_execute_command = "/init";
if (ksys_access((const char __user *) if (ksys_access((const char __user *)
ramdisk_execute_command, 0) != 0) { ramdisk_execute_command, 0) != 0) {
ramdisk_execute_command = NULL; ramdisk_execute_command = NULL;