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[PATCH] i386: make apic probe function non-init 

o struct genapic contains pointer to probe() function which is of type
  __init. Hence MODPOST generates warning if kernel is compiled with
  CONFIG_RELOCATABLE=y for i386.

WARNING: vmlinux - Section mismatch: reference to .init.text: from .data between 'apic_summit' (at offset 0xc058b504) and 'apic_bigsmp'
WARNING: vmlinux - Section mismatch: reference to .init.text: from .data between 'apic_bigsmp' (at offset 0xc058b5a4) and 'cpu.4471'
WARNING: vmlinux - Section mismatch: reference to .init.text: from .data between 'apic_es7000' (at offset 0xc058b644) and 'apic_default'
WARNING: vmlinux - Section mismatch: reference to .init.text: from .data between 'apic_default' (at offset 0xc058b6e4) and 'interrupt'

o One of the possible options is to put special case check in MODPOST to
  not emit warnings for this case but I think it is not a very good option
  in terms of maintenance.

o Another option is to make probe() function non __init. Anyway this function
  is really small so not freeing this memory after init is not a big deal.
  Secondly, from a programming perspective, probably genapic should not
  provide pointers to functions which have been freed as genapic is non
  __init and is used even after initialization is complete.

Signed-off-by: Vivek Goyal <vgoyal@in.ibm.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@osdl.org>
This commit is contained in:
Vivek Goyal 2007-01-11 01:52:44 +01:00 committed by Andi Kleen
parent 4a5d107a9a
commit e96763d6e5
4 changed files with 4 additions and 4 deletions
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2
arch/i386/mach-generic/bigsmp.c
View File

@ -45,7 +45,7 @@ static struct dmi_system_id __initdata bigsmp_dmi_table[] = {
};
static __init int probe_bigsmp(void)
static int probe_bigsmp(void)
{
if (def_to_bigsmp)
dmi_bigsmp = 1;

2
arch/i386/mach-generic/default.c
View File

@ -18,7 +18,7 @@
#include <asm/mach-default/mach_mpparse.h>
/* should be called last. */
static __init int probe_default(void)
static int probe_default(void)
{
return 1;
}

2
arch/i386/mach-generic/es7000.c
View File

@ -19,7 +19,7 @@
#include <asm/mach-es7000/mach_mpparse.h>
#include <asm/mach-es7000/mach_wakecpu.h>
static __init int probe_es7000(void)
static int probe_es7000(void)
{
/* probed later in mptable/ACPI hooks */
return 0;

2
arch/i386/mach-generic/summit.c
View File

@ -18,7 +18,7 @@
#include <asm/mach-summit/mach_ipi.h>
#include <asm/mach-summit/mach_mpparse.h>
static __init int probe_summit(void)
static int probe_summit(void)
{
/* probed later in mptable/ACPI hooks */
return 0;