[patch 1/6] Use EXTRA_RWDATA in architectures
From: Mathieu Desnoyers
Date: Tue May 29 2007 - 14:42:13 EST
Adds a place to declare rw data that will not be far from the .data content,
therefore limiting the impact on cache of data declared in sections part of the
EXTRA_RWDATA.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx>
Cc: <linux-arch@xxxxxxxxxxxxxxx>
---
arch/alpha/kernel/vmlinux.lds.S | 1 +
arch/arm/kernel/vmlinux.lds.S | 1 +
arch/arm26/kernel/vmlinux-arm26-xip.lds.in | 1 +
arch/arm26/kernel/vmlinux-arm26.lds.in | 1 +
arch/avr32/kernel/vmlinux.lds.c | 1 +
arch/cris/arch-v10/vmlinux.lds.S | 1 +
arch/cris/arch-v32/vmlinux.lds.S | 1 +
arch/frv/kernel/vmlinux.lds.S | 1 +
arch/h8300/kernel/vmlinux.lds.S | 4 +++-
arch/i386/kernel/vmlinux.lds.S | 1 +
arch/ia64/kernel/vmlinux.lds.S | 2 +-
arch/m32r/kernel/vmlinux.lds.S | 1 +
arch/m68k/kernel/vmlinux-std.lds | 1 +
arch/m68k/kernel/vmlinux-sun3.lds | 1 +
arch/m68knommu/kernel/vmlinux.lds.S | 1 +
arch/mips/kernel/vmlinux.lds.S | 2 ++
arch/parisc/kernel/vmlinux.lds.S | 1 +
arch/powerpc/kernel/vmlinux.lds.S | 2 ++
arch/ppc/kernel/vmlinux.lds.S | 1 +
arch/s390/kernel/vmlinux.lds.S | 1 +
arch/sh/kernel/vmlinux.lds.S | 1 +
arch/sh64/kernel/vmlinux.lds.S | 1 +
arch/sparc/kernel/vmlinux.lds.S | 1 +
arch/sparc64/kernel/vmlinux.lds.S | 1 +
arch/um/kernel/dyn.lds.S | 1 +
arch/um/kernel/uml.lds.S | 1 +
arch/v850/kernel/vmlinux.lds.S | 1 +
arch/x86_64/kernel/vmlinux.lds.S | 1 +
arch/xtensa/kernel/vmlinux.lds.S | 2 +-
include/asm-generic/vmlinux.lds.h | 2 ++
30 files changed, 35 insertions(+), 3 deletions(-)
Index: linux-2.6-lttng/arch/alpha/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/alpha/kernel/vmlinux.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/alpha/kernel/vmlinux.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -90,6 +90,7 @@
_data = .;
.data : { /* Data */
*(.data)
+ EXTRA_RWDATA
CONSTRUCTORS
}
Index: linux-2.6-lttng/arch/arm/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/arm/kernel/vmlinux.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/arm/kernel/vmlinux.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -159,6 +159,7 @@
* and the usual data section
*/
*(.data)
+ EXTRA_RWDATA
CONSTRUCTORS
_edata = .;
Index: linux-2.6-lttng/arch/arm26/kernel/vmlinux-arm26-xip.lds.in
===================================================================
--- linux-2.6-lttng.orig/arch/arm26/kernel/vmlinux-arm26-xip.lds.in 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/arm26/kernel/vmlinux-arm26-xip.lds.in 2007-05-15 18:44:20.000000000 -0400
@@ -112,6 +112,7 @@
* and the usual data section
*/
*(.data)
+ EXTRA_RWDATA
CONSTRUCTORS
*(.init.data)
Index: linux-2.6-lttng/arch/arm26/kernel/vmlinux-arm26.lds.in
===================================================================
--- linux-2.6-lttng.orig/arch/arm26/kernel/vmlinux-arm26.lds.in 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/arm26/kernel/vmlinux-arm26.lds.in 2007-05-15 18:44:20.000000000 -0400
@@ -107,6 +107,7 @@
* and the usual data section
*/
*(.data)
+ EXTRA_RWDATA
CONSTRUCTORS
_edata = .;
Index: linux-2.6-lttng/arch/avr32/kernel/vmlinux.lds.c
===================================================================
--- linux-2.6-lttng.orig/arch/avr32/kernel/vmlinux.lds.c 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/avr32/kernel/vmlinux.lds.c 2007-05-15 18:44:20.000000000 -0400
@@ -113,6 +113,7 @@
/* And the rest... */
*(.data.rel*)
*(.data)
+ EXTRA_RWDATA
CONSTRUCTORS
_edata = .;
Index: linux-2.6-lttng/arch/cris/arch-v10/vmlinux.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/cris/arch-v10/vmlinux.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/cris/arch-v10/vmlinux.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -45,6 +45,7 @@
__Sdata = . ;
.data : { /* Data */
*(.data)
+ EXTRA_RWDATA
}
__edata = . ; /* End of data section */
_edata = . ;
Index: linux-2.6-lttng/arch/cris/arch-v32/vmlinux.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/cris/arch-v32/vmlinux.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/cris/arch-v32/vmlinux.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -50,6 +50,7 @@
__Sdata = . ;
.data : { /* Data */
*(.data)
+ EXTRA_RWDATA
}
__edata = . ; /* End of data section. */
_edata = . ;
Index: linux-2.6-lttng/arch/frv/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/frv/kernel/vmlinux.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/frv/kernel/vmlinux.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -137,6 +137,7 @@
.data : { /* Data */
*(.data .data.*)
*(.exit.data)
+ EXTRA_RWDATA
CONSTRUCTORS
}
Index: linux-2.6-lttng/arch/h8300/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/h8300/kernel/vmlinux.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/h8300/kernel/vmlinux.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -105,7 +105,9 @@
. = ALIGN(0x4) ;
*(.data)
. = ALIGN(0x4) ;
- *(.data.*)
+ *(.data.*)
+ . = ALIGN(0x4) ;
+ EXTRA_RWDATA
. = ALIGN(0x4) ;
___init_begin = .;
Index: linux-2.6-lttng/arch/i386/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/i386/kernel/vmlinux.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/i386/kernel/vmlinux.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -77,6 +77,7 @@
. = ALIGN(4096);
.data : AT(ADDR(.data) - LOAD_OFFSET) { /* Data */
*(.data)
+ EXTRA_RWDATA
CONSTRUCTORS
} :data
Index: linux-2.6-lttng/arch/ia64/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/ia64/kernel/vmlinux.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/ia64/kernel/vmlinux.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -214,7 +214,7 @@
data : { } :data
.data : AT(ADDR(.data) - LOAD_OFFSET)
- { *(.data) *(.data1) *(.gnu.linkonce.d*) CONSTRUCTORS }
+ { *(.data) *(.data1) *(.gnu.linkonce.d*) EXTRA_RWDATA CONSTRUCTORS }
. = ALIGN(16); /* gp must be 16-byte aligned for exc. table */
.got : AT(ADDR(.got) - LOAD_OFFSET)
Index: linux-2.6-lttng/arch/m32r/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/m32r/kernel/vmlinux.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/m32r/kernel/vmlinux.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -51,6 +51,7 @@
*(.spu)
*(.spi)
*(.data)
+ EXTRA_RWDATA
CONSTRUCTORS
}
Index: linux-2.6-lttng/arch/m68k/kernel/vmlinux-std.lds
===================================================================
--- linux-2.6-lttng.orig/arch/m68k/kernel/vmlinux-std.lds 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/m68k/kernel/vmlinux-std.lds 2007-05-15 18:44:20.000000000 -0400
@@ -29,6 +29,7 @@
.data : { /* Data */
*(.data)
+ EXTRA_RWDATA
CONSTRUCTORS
}
Index: linux-2.6-lttng/arch/m68k/kernel/vmlinux-sun3.lds
===================================================================
--- linux-2.6-lttng.orig/arch/m68k/kernel/vmlinux-sun3.lds 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/m68k/kernel/vmlinux-sun3.lds 2007-05-15 18:44:20.000000000 -0400
@@ -24,6 +24,7 @@
.data : { /* Data */
*(.data)
+ EXTRA_RWDATA
CONSTRUCTORS
. = ALIGN(16); /* Exception table */
__start___ex_table = .;
Index: linux-2.6-lttng/arch/m68knommu/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/m68knommu/kernel/vmlinux.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/m68knommu/kernel/vmlinux.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -134,6 +134,7 @@
. = ALIGN(4);
_sdata = . ;
*(.data)
+ EXTRA_RWDATA
. = ALIGN(8192) ;
*(.data.init_task)
_edata = . ;
Index: linux-2.6-lttng/arch/mips/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/mips/kernel/vmlinux.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/mips/kernel/vmlinux.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -64,6 +64,8 @@
*(.data)
+ EXTRA_RWDATA
+
CONSTRUCTORS
}
_gp = . + 0x8000;
Index: linux-2.6-lttng/arch/parisc/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/parisc/kernel/vmlinux.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/parisc/kernel/vmlinux.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -92,6 +92,7 @@
. = ALIGN(L1_CACHE_BYTES);
.data : { /* Data */
*(.data)
+ EXTRA_RWDATA
CONSTRUCTORS
}
Index: linux-2.6-lttng/arch/powerpc/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/powerpc/kernel/vmlinux.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/powerpc/kernel/vmlinux.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -170,11 +170,13 @@
*(.data)
*(.sdata)
*(.got.plt) *(.got)
+ EXTRA_RWDATA
}
#else
.data : {
*(.data .data.rel* .toc1)
*(.branch_lt)
+ EXTRA_RWDATA
}
.opd : {
Index: linux-2.6-lttng/arch/ppc/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/ppc/kernel/vmlinux.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/ppc/kernel/vmlinux.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -73,6 +73,7 @@
*(.sdata2)
*(.got.plt) *(.got)
*(.dynamic)
+ EXTRA_RWDATA
CONSTRUCTORS
}
Index: linux-2.6-lttng/arch/s390/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/s390/kernel/vmlinux.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/s390/kernel/vmlinux.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -49,6 +49,7 @@
.data : { /* Data */
*(.data)
+ EXTRA_RWDATA
CONSTRUCTORS
}
Index: linux-2.6-lttng/arch/sh/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/sh/kernel/vmlinux.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/sh/kernel/vmlinux.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -42,6 +42,7 @@
.data : { /* Data */
*(.data)
+ EXTRA_RWDATA
/* Align the initial ramdisk image (INITRD) on page boundaries. */
. = ALIGN(PAGE_SIZE);
Index: linux-2.6-lttng/arch/sh64/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/sh64/kernel/vmlinux.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/sh64/kernel/vmlinux.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -79,6 +79,7 @@
.data : C_PHYS(.data) { /* Data */
*(.data)
+ EXTRA_RWDATA
CONSTRUCTORS
}
Index: linux-2.6-lttng/arch/sparc/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/sparc/kernel/vmlinux.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/sparc/kernel/vmlinux.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -23,6 +23,7 @@
.data :
{
*(.data)
+ EXTRA_RWDATA
CONSTRUCTORS
}
.data1 : { *(.data1) }
Index: linux-2.6-lttng/arch/sparc64/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/sparc64/kernel/vmlinux.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/sparc64/kernel/vmlinux.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -28,6 +28,7 @@
.data :
{
*(.data)
+ EXTRA_RWDATA
CONSTRUCTORS
}
.data1 : { *(.data1) }
Index: linux-2.6-lttng/arch/um/kernel/dyn.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/um/kernel/dyn.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/um/kernel/dyn.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -98,6 +98,7 @@
. = ALIGN(KERNEL_STACK_SIZE); /* init_task */
*(.data.init_task)
*(.data .data.* .gnu.linkonce.d.*)
+ EXTRA_RWDATA
SORT(CONSTRUCTORS)
}
.data1 : { *(.data1) }
Index: linux-2.6-lttng/arch/um/kernel/uml.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/um/kernel/uml.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/um/kernel/uml.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -61,6 +61,7 @@
*(.data.init_task)
*(.data)
*(.gnu.linkonce.d*)
+ EXTRA_RWDATA
CONSTRUCTORS
}
.data1 : { *(.data1) }
Index: linux-2.6-lttng/arch/v850/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/v850/kernel/vmlinux.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/v850/kernel/vmlinux.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -116,6 +116,7 @@
*(.data) \
*(.exit.data) /* 2.5 convention */ \
*(.data.exit) /* 2.4 convention */ \
+ EXTRA_RWDATA \
. = ALIGN (16) ; \
*(.data.cacheline_aligned) \
. = ALIGN (0x2000) ; \
Index: linux-2.6-lttng/arch/x86_64/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/x86_64/kernel/vmlinux.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/x86_64/kernel/vmlinux.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -56,6 +56,7 @@
/* Data */
.data : AT(ADDR(.data) - LOAD_OFFSET) {
*(.data)
+ EXTRA_RWDATA
CONSTRUCTORS
} :data
Index: linux-2.6-lttng/arch/xtensa/kernel/vmlinux.lds.S
===================================================================
--- linux-2.6-lttng.orig/arch/xtensa/kernel/vmlinux.lds.S 2007-05-15 18:41:05.000000000 -0400
+++ linux-2.6-lttng/arch/xtensa/kernel/vmlinux.lds.S 2007-05-15 18:44:20.000000000 -0400
@@ -144,7 +144,7 @@
_fdata = .;
.data :
{
- *(.data) CONSTRUCTORS
+ *(.data) EXTRA_RWDATA CONSTRUCTORS
. = ALIGN(XCHAL_ICACHE_LINESIZE);
*(.data.cacheline_aligned)
}
Index: linux-2.6-lttng/include/asm-generic/vmlinux.lds.h
===================================================================
--- linux-2.6-lttng.orig/include/asm-generic/vmlinux.lds.h 2007-05-15 18:44:11.000000000 -0400
+++ linux-2.6-lttng/include/asm-generic/vmlinux.lds.h 2007-05-15 18:44:20.000000000 -0400
@@ -143,6 +143,8 @@
\
. = ALIGN(4096);
+#define EXTRA_RWDATA
+
#define SECURITY_INIT \
.security_initcall.init : AT(ADDR(.security_initcall.init) - LOAD_OFFSET) { \
VMLINUX_SYMBOL(__security_initcall_start) = .; \
--
Mathieu Desnoyers
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
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