Linus: On the per-architecture side, I do think it would be better to *not* have internal architecture knowledge in a generic file, and as such a line like depends on X86_32 || IA64 || PPC || S390 || SPARC64 || X86_64 || AVR32 really shouldn't exist in a file like kernel/Kconfig.instrumentation. It would be much better to do depends on ARCH_SUPPORTS_KPROBES in that generic file, and then architectures that do support it would just have a bool ARCH_SUPPORTS_KPROBES default y in *their* architecture files. That would seem to be much more logical, and is readable both for arch maintainers *and* for people who have no clue - and don't care - about which architecture is supposed to support which interface... Changelog: Actually, I know I gave this as the magic incantation, but now that I see it, I realize that I should have told you to just use config ARCH_SUPPORTS_KPROBES def_bool y instead, which is a bit denser. We seem to use both kinds of syntax for these things, but this is really what "def_bool" is there for... - Use ARCH_HAS_* instead of ARCH_SUPPORTS). - Use a select ARCH_HAS_* Signed-off-by: Mathieu Desnoyers CC: Linus Torvalds CC: Sam Ravnborg --- arch/alpha/Kconfig | 1 + arch/arm/Kconfig | 1 + arch/blackfin/Kconfig | 1 + arch/ia64/Kconfig | 1 + arch/m32r/Kconfig | 1 + arch/mips/Kconfig | 1 + arch/parisc/Kconfig | 1 + arch/powerpc/Kconfig | 1 + arch/ppc/Kconfig | 1 + arch/s390/Kconfig | 1 + arch/sh/Kconfig | 1 + arch/sh64/Kconfig | 1 + arch/sparc/Kconfig | 1 + arch/sparc64/Kconfig | 1 + arch/x86/Kconfig.i386 | 1 + arch/x86/Kconfig.x86_64 | 1 + kernel/Kconfig.instrumentation | 5 ++++- 17 files changed, 20 insertions(+), 1 deletion(-) Index: linux-2.6-lttng/arch/alpha/Kconfig =================================================================== --- linux-2.6-lttng.orig/arch/alpha/Kconfig 2007-11-14 17:03:05.000000000 -0500 +++ linux-2.6-lttng/arch/alpha/Kconfig 2007-11-14 17:04:59.000000000 -0500 @@ -5,6 +5,7 @@ config ALPHA bool default y + select ARCH_HAS_OPROFILE help The Alpha is a 64-bit general-purpose processor designed and marketed by the Digital Equipment Corporation of blessed memory, Index: linux-2.6-lttng/arch/arm/Kconfig =================================================================== --- linux-2.6-lttng.orig/arch/arm/Kconfig 2007-11-14 17:03:05.000000000 -0500 +++ linux-2.6-lttng/arch/arm/Kconfig 2007-11-14 17:05:08.000000000 -0500 @@ -10,6 +10,7 @@ config ARM default y select RTC_LIB select SYS_SUPPORTS_APM_EMULATION + select ARCH_HAS_OPROFILE help The ARM series is a line of low-power-consumption RISC chip designs licensed by ARM Ltd and targeted at embedded applications and Index: linux-2.6-lttng/arch/blackfin/Kconfig =================================================================== --- linux-2.6-lttng.orig/arch/blackfin/Kconfig 2007-11-14 17:03:05.000000000 -0500 +++ linux-2.6-lttng/arch/blackfin/Kconfig 2007-11-14 17:10:25.000000000 -0500 @@ -24,6 +24,7 @@ config RWSEM_XCHGADD_ALGORITHM config BLACKFIN bool default y + select ARCH_HAS_OPROFILE config ZONE_DMA bool Index: linux-2.6-lttng/arch/ia64/Kconfig =================================================================== --- linux-2.6-lttng.orig/arch/ia64/Kconfig 2007-11-14 17:03:05.000000000 -0500 +++ linux-2.6-lttng/arch/ia64/Kconfig 2007-11-14 17:12:54.000000000 -0500 @@ -15,6 +15,7 @@ config IA64 select ACPI if (!IA64_HP_SIM) select PM if (!IA64_HP_SIM) select ARCH_SUPPORTS_MSI + select ARCH_HAS_OPROFILE default y help The Itanium Processor Family is Intel's 64-bit successor to Index: linux-2.6-lttng/arch/m32r/Kconfig =================================================================== --- linux-2.6-lttng.orig/arch/m32r/Kconfig 2007-11-14 17:03:05.000000000 -0500 +++ linux-2.6-lttng/arch/m32r/Kconfig 2007-11-14 17:10:49.000000000 -0500 @@ -8,6 +8,7 @@ mainmenu "Linux/M32R Kernel Configuratio config M32R bool default y + select ARCH_HAS_OPROFILE config SBUS bool Index: linux-2.6-lttng/arch/mips/Kconfig =================================================================== --- linux-2.6-lttng.orig/arch/mips/Kconfig 2007-11-14 17:03:05.000000000 -0500 +++ linux-2.6-lttng/arch/mips/Kconfig 2007-11-14 17:06:22.000000000 -0500 @@ -1,6 +1,7 @@ config MIPS bool default y + select ARCH_HAS_OPROFILE # Horrible source of confusion. Die, die, die ... select EMBEDDED select RTC_LIB Index: linux-2.6-lttng/arch/parisc/Kconfig =================================================================== --- linux-2.6-lttng.orig/arch/parisc/Kconfig 2007-11-14 17:03:05.000000000 -0500 +++ linux-2.6-lttng/arch/parisc/Kconfig 2007-11-14 17:06:39.000000000 -0500 @@ -7,6 +7,7 @@ mainmenu "Linux/PA-RISC Kernel Configura config PARISC def_bool y + select ARCH_HAS_OPROFILE help The PA-RISC microprocessor is designed by Hewlett-Packard and used in many of their workstations & servers (HP9000 700 and 800 series, Index: linux-2.6-lttng/arch/powerpc/Kconfig =================================================================== --- linux-2.6-lttng.orig/arch/powerpc/Kconfig 2007-11-14 17:03:05.000000000 -0500 +++ linux-2.6-lttng/arch/powerpc/Kconfig 2007-11-14 17:12:54.000000000 -0500 @@ -79,6 +79,7 @@ config ARCH_NO_VIRT_TO_BUS config PPC bool default y + select ARCH_HAS_OPROFILE config EARLY_PRINTK bool Index: linux-2.6-lttng/arch/ppc/Kconfig =================================================================== --- linux-2.6-lttng.orig/arch/ppc/Kconfig 2007-11-14 17:03:05.000000000 -0500 +++ linux-2.6-lttng/arch/ppc/Kconfig 2007-11-14 17:12:54.000000000 -0500 @@ -42,6 +42,7 @@ config GENERIC_CALIBRATE_DELAY config PPC bool default y + select ARCH_HAS_OPROFILE config PPC32 bool Index: linux-2.6-lttng/arch/s390/Kconfig =================================================================== --- linux-2.6-lttng.orig/arch/s390/Kconfig 2007-11-14 17:03:05.000000000 -0500 +++ linux-2.6-lttng/arch/s390/Kconfig 2007-11-14 17:12:54.000000000 -0500 @@ -51,6 +51,7 @@ mainmenu "Linux Kernel Configuration" config S390 def_bool y + select ARCH_HAS_OPROFILE source "init/Kconfig" Index: linux-2.6-lttng/arch/sh/Kconfig =================================================================== --- linux-2.6-lttng.orig/arch/sh/Kconfig 2007-11-14 17:03:05.000000000 -0500 +++ linux-2.6-lttng/arch/sh/Kconfig 2007-11-14 17:08:24.000000000 -0500 @@ -9,6 +9,7 @@ config SUPERH bool default y select EMBEDDED + select ARCH_HAS_OPROFILE help The SuperH is a RISC processor targeted for use in embedded systems and consumer electronics; it was also used in the Sega Dreamcast Index: linux-2.6-lttng/arch/sh64/Kconfig =================================================================== --- linux-2.6-lttng.orig/arch/sh64/Kconfig 2007-11-14 17:03:05.000000000 -0500 +++ linux-2.6-lttng/arch/sh64/Kconfig 2007-11-14 17:08:40.000000000 -0500 @@ -8,6 +8,7 @@ mainmenu "Linux/SH64 Kernel Configuratio config SUPERH bool default y + select ARCH_HAS_OPROFILE config SUPERH64 bool Index: linux-2.6-lttng/arch/sparc/Kconfig =================================================================== --- linux-2.6-lttng.orig/arch/sparc/Kconfig 2007-11-14 17:03:05.000000000 -0500 +++ linux-2.6-lttng/arch/sparc/Kconfig 2007-11-14 17:08:59.000000000 -0500 @@ -63,6 +63,7 @@ config NR_CPUS config SPARC bool default y + select ARCH_HAS_OPROFILE # Identify this as a Sparc32 build config SPARC32 Index: linux-2.6-lttng/arch/sparc64/Kconfig =================================================================== --- linux-2.6-lttng.orig/arch/sparc64/Kconfig 2007-11-14 17:03:05.000000000 -0500 +++ linux-2.6-lttng/arch/sparc64/Kconfig 2007-11-14 17:12:54.000000000 -0500 @@ -8,6 +8,7 @@ mainmenu "Linux/UltraSPARC Kernel Config config SPARC bool default y + select ARCH_HAS_OPROFILE config SPARC64 bool Index: linux-2.6-lttng/arch/x86/Kconfig.i386 =================================================================== --- linux-2.6-lttng.orig/arch/x86/Kconfig.i386 2007-11-14 17:03:05.000000000 -0500 +++ linux-2.6-lttng/arch/x86/Kconfig.i386 2007-11-14 17:12:54.000000000 -0500 @@ -8,6 +8,7 @@ mainmenu "Linux Kernel Configuration" config X86_32 bool default y + select ARCH_HAS_OPROFILE help This is Linux's home port. Linux was originally native to the Intel 386, and runs on all the later x86 processors including the Intel Index: linux-2.6-lttng/arch/x86/Kconfig.x86_64 =================================================================== --- linux-2.6-lttng.orig/arch/x86/Kconfig.x86_64 2007-11-14 17:03:05.000000000 -0500 +++ linux-2.6-lttng/arch/x86/Kconfig.x86_64 2007-11-14 17:12:54.000000000 -0500 @@ -12,6 +12,7 @@ mainmenu "Linux Kernel Configuration" config X86_64 bool default y + select ARCH_HAS_OPROFILE help Port to the x86-64 architecture. x86-64 is a 64-bit extension to the classical 32-bit x86 architecture. For details see Index: linux-2.6-lttng/kernel/Kconfig.instrumentation =================================================================== --- linux-2.6-lttng.orig/kernel/Kconfig.instrumentation 2007-11-14 17:03:05.000000000 -0500 +++ linux-2.6-lttng/kernel/Kconfig.instrumentation 2007-11-14 17:12:54.000000000 -0500 @@ -21,7 +21,7 @@ config PROFILING config OPROFILE tristate "OProfile system profiling (EXPERIMENTAL)" depends on PROFILING - depends on ALPHA || ARM || BLACKFIN || X86_32 || IA64 || M32R || MIPS || PARISC || PPC || S390 || SUPERH || SPARC || X86_64 + depends on ARCH_HAS_OPROFILE help OProfile is a profiling system capable of profiling the whole system, include the kernel, kernel modules, libraries, @@ -29,6 +29,9 @@ config OPROFILE If unsure, say N. +config ARCH_HAS_OPROFILE + def_bool n + config KPROBES bool "Kprobes" depends on KALLSYMS && MODULES -- 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@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/