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Date: Tue, 30 Sep 2008 15:01:26 -0700
From: Yinghai Lu <yhlu.kernel@...il.com>
To: Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
"H. Peter Anvin" <hpa@...or.com>,
Andrew Morton <akpm@...ux-foundation.org>
Cc: linux-kernel@...r.kernel.org, Yinghai Lu <yhlu.kernel@...il.com>
Subject: [PATCH] x86: mtrr_cleanup update command line and doc mtrrcleanup_debug
change enable_mtrr_cleanup to mtrrcleanup, disable_mtrr_cleanup to nomtrrcleanup.
so doc mtrrcleanup_debug.
and change MTRR_SANITIZER to def_bool y
Signed-off-by: Yinghai Lu <yhlu.kernel@...il.com>
---
Documentation/kernel-parameters.txt | 7 +++++--
arch/x86/Kconfig | 6 +++---
arch/x86/kernel/cpu/mtrr/main.c | 6 +++---
3 files changed, 11 insertions(+), 8 deletions(-)
Index: linux-2.6/Documentation/kernel-parameters.txt
===================================================================
--- linux-2.6.orig/Documentation/kernel-parameters.txt
+++ linux-2.6/Documentation/kernel-parameters.txt
@@ -614,12 +614,15 @@ and is between 256 and 4096 characters.
See drivers/char/README.epca and
Documentation/digiepca.txt.
- disable_mtrr_cleanup [X86]
- enable_mtrr_cleanup [X86]
+ nomtrrcleanup [X86]
+ mtrrcleanup [X86]
The kernel tries to adjust MTRR layout from continuous
to discrete, to make X server driver able to add WB
entry later. This parameter enables/disables that.
+ mtrrcleanup_debug [X86]
+ print out more debug info for mtrr cleanup.
+
mtrr_chunk_size=nn[KMG] [X86]
used for mtrr cleanup. It is largest continous chunk
that could hold holes aka. UC entries.
Index: linux-2.6/arch/x86/Kconfig
===================================================================
--- linux-2.6.orig/arch/x86/Kconfig
+++ linux-2.6/arch/x86/Kconfig
@@ -1243,18 +1243,18 @@ config MTRR
See <file:Documentation/x86/mtrr.txt> for more information.
config MTRR_SANITIZER
- bool
+ def_bool y
prompt "MTRR cleanup support"
depends on MTRR
help
Convert MTRR layout from continuous to discrete, so X drivers can
add writeback entries.
- Can be disabled with disable_mtrr_cleanup on the kernel command line.
+ Can be disabled with nomtrrcleanup on the kernel command line.
The largest mtrr entry size for a continous block can be set with
mtrr_chunk_size.
- If unsure, say N.
+ If unsure, say Y.
config MTRR_SANITIZER_ENABLE_DEFAULT
int "MTRR cleanup enable value (0-1)"
Index: linux-2.6/arch/x86/kernel/cpu/mtrr/main.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/cpu/mtrr/main.c
+++ linux-2.6/arch/x86/kernel/cpu/mtrr/main.c
@@ -826,7 +826,7 @@ static int __init disable_mtrr_cleanup_s
enable_mtrr_cleanup = 0;
return 0;
}
-early_param("disable_mtrr_cleanup", disable_mtrr_cleanup_setup);
+early_param("nomtrrcleanup", disable_mtrr_cleanup_setup);
static int __init enable_mtrr_cleanup_setup(char *str)
{
@@ -834,14 +834,14 @@ static int __init enable_mtrr_cleanup_se
enable_mtrr_cleanup = 1;
return 0;
}
-early_param("enable_mtrr_cleanup", enable_mtrr_cleanup_setup);
+early_param("mtrrcleanup", enable_mtrr_cleanup_setup);
static int __init mtrr_cleanup_debug_setup(char *str)
{
debug_print = 1;
return 0;
}
-early_param("mtrr_cleanup_debug", mtrr_cleanup_debug_setup);
+early_param("mtrrcleanup_debug", mtrr_cleanup_debug_setup);
struct var_mtrr_state {
unsigned long range_startk;
--
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