This patchs adds an option of prepend a text to the command line instead of appending it. Signed-off-by: Christophe Leroy <christophe.leroy@xxxxxx> --- include/linux/cmdline.h | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/include/linux/cmdline.h b/include/linux/cmdline.h index afcc00d7628d..5caf3724c1ab 100644 --- a/include/linux/cmdline.h +++ b/include/linux/cmdline.h @@ -3,7 +3,7 @@ #define _LINUX_CMDLINE_H /* - * This function will append a builtin command line to the command + * This function will append or prepend a builtin command line to the command * line provided by the bootloader. Kconfig options can be used to alter * the behavior of this builtin command line. * @dest: The destination of the final appended/prepended string. @@ -22,6 +22,9 @@ static __always_inline void cmdline_build(char *dest, const char *src, size_t le strlcat(dest, CONFIG_CMDLINE, length); return; } + + if (IS_ENABLED(CONFIG_CMDLINE_PREPEND) && sizeof(CONFIG_CMDLINE) > 1) + strlcat(dest, CONFIG_CMDLINE " ", length); #endif if (dest != src) strlcat(dest, src, length); -- 2.13.3
