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init: allow initcall tables to be emitted using relative references

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Allow the initcall tables to be emitted using relative references that
are only half the size on 64-bit architectures and don't require fixups
at runtime on relocatable kernels.

Link: http://lkml.kernel.org/r/20180704083651.24360-5-ard.biesheuvel@linaro.org
Acked-by: James Morris <james.morris@microsoft.com>
Acked-by: Sergey Senozhatsky <sergey.senozhatsky@gmail.com>
Acked-by: Petr Mladek <pmladek@suse.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Acked-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: James Morris <jmorris@namei.org>
Cc: Jessica Yu <jeyu@kernel.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Nicolas Pitre <nico@linaro.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: "Serge E. Hallyn" <serge@hallyn.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Garnier <thgarnie@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Ard Biesheuvel
2018-08-21 21:56:13 -07:00
committed by Linus Torvalds
parent 7290d58095
commit 1b1eeca7e4
4 changed files with 67 additions and 40 deletions
Download Patch File Download Diff File Expand all files Collapse all files

16
kernel/printk/printk.c
View File

@@ -2788,7 +2788,8 @@ EXPORT_SYMBOL(unregister_console);
void __init console_init(void)
{
int ret;
initcall_t *call;
initcall_t call;
initcall_entry_t *ce;
/* Setup the default TTY line discipline. */
n_tty_init();
@@ -2797,13 +2798,14 @@ void __init console_init(void)
* set up the console device so that later boot sequences can
* inform about problems etc..
*/
call = __con_initcall_start;
ce = __con_initcall_start;
trace_initcall_level("console");
while (call < __con_initcall_end) {
trace_initcall_start((*call));
ret = (*call)();
trace_initcall_finish((*call), ret);
call++;
while (ce < __con_initcall_end) {
call = initcall_from_entry(ce);
trace_initcall_start(call);
ret = call();
trace_initcall_finish(call, ret);
ce++;
}
}