Re: [patch 4/8] Immediate Value - Add kconfig menus

From: Mathieu Desnoyers
Date: Sun Jul 15 2007 - 20:32:52 EST

Should be dropped,
replaced by :
immediate-values-kconfig-embedded.patch

* Mathieu Desnoyers (mathieu.desnoyers@xxxxxxxxxx) wrote:
> Immediate values provide a way to use dynamic code patching to update variables
> sitting within the instruction stream. It saves caches lines normally used by
> static read mostly variables.
>
> Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@xxxxxxxxxx>
> CC: Adrian Bunk <bunk@xxxxxxxxx>
> CC: Andi Kleen <andi@xxxxxxxxxxxxxx>
> ---
>
> arch/alpha/Kconfig | 6 ++++++
> arch/arm/Kconfig | 6 ++++++
> arch/arm26/Kconfig | 6 ++++++
> arch/avr32/Kconfig.debug | 7 +++++++
> arch/cris/Kconfig | 6 ++++++
> arch/frv/Kconfig | 6 ++++++
> arch/h8300/Kconfig | 6 ++++++
> arch/i386/Kconfig | 2 ++
> arch/ia64/Kconfig | 3 +++
> arch/m32r/Kconfig | 6 ++++++
> arch/m68k/Kconfig | 6 ++++++
> arch/m68knommu/Kconfig | 6 ++++++
> arch/mips/Kconfig | 6 ++++++
> arch/parisc/Kconfig | 6 ++++++
> arch/powerpc/Kconfig | 3 +++
> arch/ppc/Kconfig | 6 ++++++
> arch/s390/Kconfig | 2 ++
> arch/sh/Kconfig | 6 ++++++
> arch/sh64/Kconfig | 6 ++++++
> arch/sparc/Kconfig | 2 ++
> arch/sparc64/Kconfig | 3 +++
> arch/um/Kconfig | 6 ++++++
> arch/v850/Kconfig | 6 ++++++
> arch/x86_64/Kconfig | 3 +++
> arch/xtensa/Kconfig | 6 ++++++
> kernel/Kconfig.immediate | 11 +++++++++++
> 26 files changed, 138 insertions(+)
>
> Index: linux-2.6-lttng/arch/alpha/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/alpha/Kconfig 2007-07-13 14:17:59.000000000 -0400
> +++ linux-2.6-lttng/arch/alpha/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -653,6 +653,12 @@
>
> source "arch/alpha/oprofile/Kconfig"
>
> +menu "Instrumentation Support"
> +
> +source "kernel/Kconfig.immediate"
> +
> +endmenu
> +
> source "arch/alpha/Kconfig.debug"
>
> # DUMMY_CONSOLE may be defined in drivers/video/console/Kconfig
> Index: linux-2.6-lttng/arch/arm/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/arm/Kconfig 2007-07-13 14:17:59.000000000 -0400
> +++ linux-2.6-lttng/arch/arm/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -1046,6 +1046,12 @@
>
> source "arch/arm/oprofile/Kconfig"
>
> +menu "Instrumentation Support"
> +
> +source "kernel/Kconfig.immediate"
> +
> +endmenu
> +
> source "arch/arm/Kconfig.debug"
>
> source "security/Kconfig"
> Index: linux-2.6-lttng/arch/arm26/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/arm26/Kconfig 2007-07-13 14:17:59.000000000 -0400
> +++ linux-2.6-lttng/arch/arm26/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -244,6 +244,12 @@
>
> source "drivers/usb/Kconfig"
>
> +menu "Instrumentation Support"
> +
> +source "kernel/Kconfig.immediate"
> +
> +endmenu
> +
> source "arch/arm26/Kconfig.debug"
>
> source "security/Kconfig"
> Index: linux-2.6-lttng/arch/cris/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/cris/Kconfig 2007-07-13 14:17:59.000000000 -0400
> +++ linux-2.6-lttng/arch/cris/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -198,6 +198,12 @@
>
> source "drivers/usb/Kconfig"
>
> +menu "Instrumentation Support"
> +
> +source "kernel/Kconfig.immediate"
> +
> +endmenu
> +
> source "arch/cris/Kconfig.debug"
>
> source "security/Kconfig"
> Index: linux-2.6-lttng/arch/frv/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/frv/Kconfig 2007-07-13 14:17:59.000000000 -0400
> +++ linux-2.6-lttng/arch/frv/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -375,6 +375,12 @@
>
> source "fs/Kconfig"
>
> +menu "Instrumentation Support"
> +
> +source "kernel/Kconfig.immediate"
> +
> +endmenu
> +
> source "arch/frv/Kconfig.debug"
>
> source "security/Kconfig"
> Index: linux-2.6-lttng/arch/h8300/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/h8300/Kconfig 2007-07-13 14:17:59.000000000 -0400
> +++ linux-2.6-lttng/arch/h8300/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -223,6 +223,12 @@
>
> source "fs/Kconfig"
>
> +menu "Instrumentation Support"
> +
> +source "kernel/Kconfig.immediate"
> +
> +endmenu
> +
> source "arch/h8300/Kconfig.debug"
>
> source "security/Kconfig"
> Index: linux-2.6-lttng/arch/i386/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/i386/Kconfig 2007-07-13 14:17:59.000000000 -0400
> +++ linux-2.6-lttng/arch/i386/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -1249,6 +1249,8 @@
> for kernel debugging, non-intrusive instrumentation and testing.
> If in doubt, say "N".
>
> +source "kernel/Kconfig.immediate"
> +
> endif # INSTRUMENTATION
>
> source "arch/i386/Kconfig.debug"
> Index: linux-2.6-lttng/arch/ia64/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/ia64/Kconfig 2007-07-13 14:17:59.000000000 -0400
> +++ linux-2.6-lttng/arch/ia64/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -593,6 +593,9 @@
> a probepoint and specifies the callback. Kprobes is useful
> for kernel debugging, non-intrusive instrumentation and testing.
> If in doubt, say "N".
> +
> +source "kernel/Kconfig.immediate"
> +
> endmenu
>
> source "arch/ia64/Kconfig.debug"
> Index: linux-2.6-lttng/arch/m32r/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/m32r/Kconfig 2007-07-13 14:18:00.000000000 -0400
> +++ linux-2.6-lttng/arch/m32r/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -408,6 +408,12 @@
>
> source "arch/m32r/oprofile/Kconfig"
>
> +menu "Instrumentation Support"
> +
> +source "kernel/Kconfig.immediate"
> +
> +endmenu
> +
> source "arch/m32r/Kconfig.debug"
>
> source "security/Kconfig"
> Index: linux-2.6-lttng/arch/m68k/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/m68k/Kconfig 2007-07-13 14:18:00.000000000 -0400
> +++ linux-2.6-lttng/arch/m68k/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -676,6 +676,12 @@
>
> source "fs/Kconfig"
>
> +menu "Instrumentation Support"
> +
> +source "kernel/Kconfig.immediate"
> +
> +endmenu
> +
> source "arch/m68k/Kconfig.debug"
>
> source "security/Kconfig"
> Index: linux-2.6-lttng/arch/m68knommu/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/m68knommu/Kconfig 2007-07-13 14:18:00.000000000 -0400
> +++ linux-2.6-lttng/arch/m68knommu/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -668,6 +668,12 @@
>
> source "fs/Kconfig"
>
> +menu "Instrumentation Support"
> +
> +source "kernel/Kconfig.immediate"
> +
> +endmenu
> +
> source "arch/m68knommu/Kconfig.debug"
>
> source "security/Kconfig"
> Index: linux-2.6-lttng/arch/mips/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/mips/Kconfig 2007-07-13 14:18:00.000000000 -0400
> +++ linux-2.6-lttng/arch/mips/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -1946,6 +1946,12 @@
>
> source "arch/mips/oprofile/Kconfig"
>
> +menu "Instrumentation Support"
> +
> +source "kernel/Kconfig.immediate"
> +
> +endmenu
> +
> source "arch/mips/Kconfig.debug"
>
> source "security/Kconfig"
> Index: linux-2.6-lttng/arch/parisc/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/parisc/Kconfig 2007-07-13 14:18:00.000000000 -0400
> +++ linux-2.6-lttng/arch/parisc/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -269,6 +269,12 @@
>
> source "arch/parisc/oprofile/Kconfig"
>
> +menu "Instrumentation Support"
> +
> +source "kernel/Kconfig.immediate"
> +
> +endmenu
> +
> source "arch/parisc/Kconfig.debug"
>
> source "security/Kconfig"
> Index: linux-2.6-lttng/arch/powerpc/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/powerpc/Kconfig 2007-07-13 14:18:00.000000000 -0400
> +++ linux-2.6-lttng/arch/powerpc/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -655,6 +655,9 @@
> a probepoint and specifies the callback. Kprobes is useful
> for kernel debugging, non-intrusive instrumentation and testing.
> If in doubt, say "N".
> +
> +source "kernel/Kconfig.immediate"
> +
> endmenu
>
> source "arch/powerpc/Kconfig.debug"
> Index: linux-2.6-lttng/arch/ppc/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/ppc/Kconfig 2007-07-13 14:18:00.000000000 -0400
> +++ linux-2.6-lttng/arch/ppc/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -1451,8 +1451,14 @@
>
> source "lib/Kconfig"
>
> +menu "Instrumentation Support"
> +
> source "arch/powerpc/oprofile/Kconfig"
>
> +source "kernel/Kconfig.immediate"
> +
> +endmenu
> +
> source "arch/ppc/Kconfig.debug"
>
> source "security/Kconfig"
> Index: linux-2.6-lttng/arch/s390/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/s390/Kconfig 2007-07-13 14:18:00.000000000 -0400
> +++ linux-2.6-lttng/arch/s390/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -547,6 +547,8 @@
> for kernel debugging, non-intrusive instrumentation and testing.
> If in doubt, say "N".
>
> +source "kernel/Kconfig.immediate"
> +
> endmenu
>
> source "arch/s390/Kconfig.debug"
> Index: linux-2.6-lttng/arch/sh/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/sh/Kconfig 2007-07-13 14:18:00.000000000 -0400
> +++ linux-2.6-lttng/arch/sh/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -721,6 +721,12 @@
>
> source "arch/sh/oprofile/Kconfig"
>
> +menu "Instrumentation Support"
> +
> +source "kernel/Kconfig.immediate"
> +
> +endmenu
> +
> source "arch/sh/Kconfig.debug"
>
> source "security/Kconfig"
> Index: linux-2.6-lttng/arch/sh64/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/sh64/Kconfig 2007-07-13 14:18:00.000000000 -0400
> +++ linux-2.6-lttng/arch/sh64/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -284,6 +284,12 @@
>
> source "arch/sh64/oprofile/Kconfig"
>
> +menu "Instrumentation Support"
> +
> +source "kernel/Kconfig.immediate"
> +
> +endmenu
> +
> source "arch/sh64/Kconfig.debug"
>
> source "security/Kconfig"
> Index: linux-2.6-lttng/arch/sparc/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/sparc/Kconfig 2007-07-13 14:18:00.000000000 -0400
> +++ linux-2.6-lttng/arch/sparc/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -313,6 +313,8 @@
>
> source "arch/sparc/oprofile/Kconfig"
>
> +source "kernel/Kconfig.immediate"
> +
> endmenu
>
> source "arch/sparc/Kconfig.debug"
> Index: linux-2.6-lttng/arch/sparc64/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/sparc64/Kconfig 2007-07-13 14:18:00.000000000 -0400
> +++ linux-2.6-lttng/arch/sparc64/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -451,6 +451,9 @@
> a probepoint and specifies the callback. Kprobes is useful
> for kernel debugging, non-intrusive instrumentation and testing.
> If in doubt, say "N".
> +
> +source "kernel/Kconfig.immediate"
> +
> endmenu
>
> source "arch/sparc64/Kconfig.debug"
> Index: linux-2.6-lttng/arch/um/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/um/Kconfig 2007-07-13 14:18:00.000000000 -0400
> +++ linux-2.6-lttng/arch/um/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -335,4 +335,10 @@
> bool
> default n
>
> +menu "Instrumentation Support"
> +
> +source "kernel/Kconfig.immediate"
> +
> +endmenu
> +
> source "arch/um/Kconfig.debug"
> Index: linux-2.6-lttng/arch/v850/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/v850/Kconfig 2007-07-13 14:18:00.000000000 -0400
> +++ linux-2.6-lttng/arch/v850/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -331,6 +331,12 @@
>
> source "drivers/usb/Kconfig"
>
> +menu "Instrumentation Support"
> +
> +source "kernel/Kconfig.immediate"
> +
> +endmenu
> +
> source "arch/v850/Kconfig.debug"
>
> source "security/Kconfig"
> Index: linux-2.6-lttng/arch/x86_64/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/x86_64/Kconfig 2007-07-13 14:18:00.000000000 -0400
> +++ linux-2.6-lttng/arch/x86_64/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -842,6 +842,9 @@
> a probepoint and specifies the callback. Kprobes is useful
> for kernel debugging, non-intrusive instrumentation and testing.
> If in doubt, say "N".
> +
> +source "kernel/Kconfig.immediate"
> +
> endmenu
>
> source "arch/x86_64/Kconfig.debug"
> Index: linux-2.6-lttng/arch/xtensa/Kconfig
> ===================================================================
> --- linux-2.6-lttng.orig/arch/xtensa/Kconfig 2007-07-13 14:18:00.000000000 -0400
> +++ linux-2.6-lttng/arch/xtensa/Kconfig 2007-07-13 14:33:51.000000000 -0400
> @@ -251,6 +251,12 @@
> provide one yourself.
> endmenu
>
> +menu "Instrumentation Support"
> +
> +source "kernel/Kconfig.immediate"
> +
> +endmenu
> +
> source "arch/xtensa/Kconfig.debug"
>
> source "security/Kconfig"
> Index: linux-2.6-lttng/kernel/Kconfig.immediate
> ===================================================================
> --- /dev/null 1970-01-01 00:00:00.000000000 +0000
> +++ linux-2.6-lttng/kernel/Kconfig.immediate 2007-07-13 14:33:47.000000000 -0400
> @@ -0,0 +1,11 @@
> +# Immediate values configuration
> +
> +config IMMEDIATE
> + bool "Enable immediate values"
> + depends on X86_32 || PPC
> + default y if !EMBEDDED
> + help
> + Immediate values are used as read mostly variables that are rarely
> + updated. They use code patching to modify the values inscribed in the
> + instruction stream. It provides a way to save precious cache lines
> + that would otherwise have to be used by these variables.
> Index: linux-2.6-lttng/arch/avr32/Kconfig.debug
> ===================================================================
> --- linux-2.6-lttng.orig/arch/avr32/Kconfig.debug 2007-07-13 14:18:00.000000000 -0400
> +++ linux-2.6-lttng/arch/avr32/Kconfig.debug 2007-07-13 14:33:51.000000000 -0400
> @@ -6,6 +6,9 @@
>
> source "lib/Kconfig.debug"
>
> +menu "Instrumentation Support"
> + depends on EXPERIMENTAL
> +
> config KPROBES
> bool "Kprobes"
> depends on DEBUG_KERNEL
> @@ -16,4 +19,8 @@
> for kernel debugging, non-intrusive instrumentation and testing.
> If in doubt, say "N".
>
> +source "kernel/Kconfig.immediate"
> +
> +endmenu
> +
> endmenu
>
> --
> Mathieu Desnoyers
> Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
> OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
> -
> To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
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> More majordomo info at http://vger.kernel.org/majordomo-info.html
> Please read the FAQ at http://www.tux.org/lkml/
>

--
Mathieu Desnoyers
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
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Please read the FAQ at http://www.tux.org/lkml/