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SubjectRe: [PATCH 2/4] Save the MTRRs of the BSP before booting an AP
On Tue, 3 Apr 2007 16:00:36 +0200 (CEST) Bernhard Kaindl <bk@suse.de> wrote:

> --- linux-2.6.20.orig/arch/i386/kernel/smpboot.c
> +++ linux-2.6.20/arch/i386/kernel/smpboot.c
> @@ -59,6 +59,7 @@
> #include <asm/nmi.h>
> #include <asm/pda.h>
> #include <asm/genapic.h>
> +#include <asm/mtrr.h>
>

This inclusion breaks `make headers_check'.

Please always at least test allmodconfig builds before releasing a
patchset. Additional hints are in Documentation/SubmitChecklist.

+static __inline__ void mtrr_save_state (void)
+{
+ if (smp_processor_id() == 0)
+ mtrr_save_fixed_ranges(NULL);
+ else
+ smp_call_function_single(0, mtrr_save_fixed_ranges, NULL, 1, 1);
+}
- Please use inline, not __inline__

- No space before the (

- We should uninline this function

- It is not performance critical

- It is probably too large to be inlined anwyay

- It uses a lot of tricky stuff which requires a lot of header files.


From: Andrew Morton <akpm@linux-foundation.org>

Fix `make headers_check'.

Cc: Andi Kleen <ak@suse.de>
Cc: Bernhard Kaindl <bk@suse.de>
Cc: Dave Jones <davej@codemonkey.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---
arch/i386/kernel/cpu/mtrr/main.c | 11 +++++++++++
include/asm-i386/mtrr.h | 12 +-----------
include/asm-x86_64/proto.h | 12 +-----------
3 files changed, 13 insertions(+), 22 deletions(-)
diff -puN arch/i386/kernel/smpboot.c~mtrr-save-the-mtrrs-of-the-bsp-before-booting-an-ap-fix arch/i386/kernel/smpboot.c
diff -puN arch/x86_64/kernel/smpboot.c~mtrr-save-the-mtrrs-of-the-bsp-before-booting-an-ap-fix arch/x86_64/kernel/smpboot.c
diff -puN include/asm-i386/mtrr.h~mtrr-save-the-mtrrs-of-the-bsp-before-booting-an-ap-fix include/asm-i386/mtrr.h
--- a/include/asm-i386/mtrr.h~mtrr-save-the-mtrrs-of-the-bsp-before-booting-an-ap-fix
+++ a/include/asm-i386/mtrr.h
@@ -25,7 +25,6 @@

#include <linux/ioctl.h>
#include <linux/errno.h>
-#include <linux/smp.h>

#define MTRR_IOCTL_BASE 'M'

@@ -71,16 +70,7 @@ struct mtrr_gentry
/* The following functions are for use by other drivers */
# ifdef CONFIG_MTRR
extern void mtrr_save_fixed_ranges(void *);
-/**
- * Save current fixed-range MTRR state of the BSP
- */
-static __inline__ void mtrr_save_state (void)
-{
- if (smp_processor_id() == 0)
- mtrr_save_fixed_ranges(NULL);
- else
- smp_call_function_single(0, mtrr_save_fixed_ranges, NULL, 1, 1);
-}
+extern void mtrr_save_state(void);
extern int mtrr_add (unsigned long base, unsigned long size,
unsigned int type, char increment);
extern int mtrr_add_page (unsigned long base, unsigned long size,
diff -puN include/asm-x86_64/proto.h~mtrr-save-the-mtrrs-of-the-bsp-before-booting-an-ap-fix include/asm-x86_64/proto.h
--- a/include/asm-x86_64/proto.h~mtrr-save-the-mtrrs-of-the-bsp-before-booting-an-ap-fix
+++ a/include/asm-x86_64/proto.h
@@ -2,7 +2,6 @@
#define _ASM_X8664_PROTO_H 1

#include <asm/ldt.h>
-#include <linux/smp.h>

/* misc architecture specific prototypes */

@@ -19,16 +18,7 @@ extern void mcheck_init(struct cpuinfo_x
extern void mtrr_ap_init(void);
extern void mtrr_bp_init(void);
extern void mtrr_save_fixed_ranges(void *);
-static __inline__ void mtrr_save_state (void)
-{
- /*
- * Save current fixed-range MTRR state of the BSP:
- */
- if (smp_processor_id() == 0)
- mtrr_save_fixed_ranges(NULL);
- else
- smp_call_function_single(0, mtrr_save_fixed_ranges, NULL, 1, 1);
-}
+extern void mtrr_save_state(void);
#else
#define mtrr_ap_init() do {} while (0)
#define mtrr_bp_init() do {} while (0)
diff -puN arch/i386/kernel/cpu/mtrr/main.c~mtrr-save-the-mtrrs-of-the-bsp-before-booting-an-ap-fix arch/i386/kernel/cpu/mtrr/main.c
--- a/arch/i386/kernel/cpu/mtrr/main.c~mtrr-save-the-mtrrs-of-the-bsp-before-booting-an-ap-fix
+++ a/arch/i386/kernel/cpu/mtrr/main.c
@@ -729,6 +729,17 @@ void mtrr_ap_init(void)
local_irq_restore(flags);
}

+/**
+ * Save current fixed-range MTRR state of the BSP
+ */
+void mtrr_save_state(void)
+{
+ if (smp_processor_id() == 0)
+ mtrr_save_fixed_ranges(NULL);
+ else
+ smp_call_function_single(0, mtrr_save_fixed_ranges, NULL, 1, 1);
+}
+
static int __init mtrr_init_finialize(void)
{
if (!mtrr_if)
_
-
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