params: <level>_initcall-like kernel parameters

This patch adds a set of macros that can be used to declare
kernel parameters to be parsed _before_ initcalls at a chosen
level are executed.  We rename the now-unused "flags" field of
struct kernel_param as the level.  It's signed, for when we
use this for early params as well, in future.

Linker macro collating init calls had to be modified in order
to add additional symbols between levels that are later used
by the init code to split the calls into blocks.

Signed-off-by: Pawel Moll <pawel.moll@arm.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>

1 files changed, 2 insertions, 1 deletions

diff --git a/arch/powerpc/mm/hugetlbpage.c b/arch/powerpc/mm/hugetlbpage.c
index 57c7465e656e..a3e628727697 100644
--- a/arch/powerpc/mm/hugetlbpage.c
+++ b/arch/powerpc/mm/hugetlbpage.c
@@ -310,7 +310,8 @@ void __init reserve_hugetlb_gpages(void)
         int i;
 
         strlcpy(cmdline, boot_command_line, COMMAND_LINE_SIZE);
-        parse_args("hugetlb gpages", cmdline, NULL, 0, &do_gpage_early_setup);
+        parse_args("hugetlb gpages", cmdline, NULL, 0, 0, 0,
+                        &do_gpage_early_setup);
 
         /*
          * Walk gpage list in reverse, allocating larger page sizes first.