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 KPROBES_SUPPORT 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 HAVE_KPROBES - Use a select - Yet another update : Moving to HAVE_* now. Signed-off-by: Mathieu Desnoyers <[EMAIL PROTECTED]> CC: Linus Torvalds <[EMAIL PROTECTED]> CC: Sam Ravnborg <[EMAIL PROTECTED]> --- arch/avr32/Kconfig | 1 + arch/ia64/Kconfig | 1 + arch/powerpc/Kconfig | 1 + arch/ppc/Kconfig | 1 + arch/s390/Kconfig | 1 + arch/sparc64/Kconfig | 1 + arch/x86/Kconfig | 1 + kernel/Kconfig.instrumentation | 5 ++++- 8 files changed, 11 insertions(+), 1 deletion(-) Index: linux-2.6-lttng/arch/avr32/Kconfig =================================================================== --- linux-2.6-lttng.orig/arch/avr32/Kconfig 2007-11-15 21:18:40.000000000 -0500 +++ linux-2.6-lttng/arch/avr32/Kconfig 2007-11-15 21:24:51.000000000 -0500 @@ -11,6 +11,7 @@ config AVR32 # With EMBEDDED=n, we get lots of stuff automatically selected # that we usually don't need on AVR32. select EMBEDDED + select HAVE_KPROBES help AVR32 is a high-performance 32-bit RISC microprocessor core, designed for cost-sensitive embedded applications, with particular Index: linux-2.6-lttng/arch/ia64/Kconfig =================================================================== --- linux-2.6-lttng.orig/arch/ia64/Kconfig 2007-11-15 21:23:35.000000000 -0500 +++ linux-2.6-lttng/arch/ia64/Kconfig 2007-11-15 21:33:43.000000000 -0500 @@ -16,6 +16,7 @@ config IA64 select PM if (!IA64_HP_SIM) select ARCH_SUPPORTS_MSI select HAVE_OPROFILE + select HAVE_KPROBES default y help The Itanium Processor Family is Intel's 64-bit successor to Index: linux-2.6-lttng/arch/powerpc/Kconfig =================================================================== --- linux-2.6-lttng.orig/arch/powerpc/Kconfig 2007-11-15 21:23:35.000000000 -0500 +++ linux-2.6-lttng/arch/powerpc/Kconfig 2007-11-15 21:33:43.000000000 -0500 @@ -80,6 +80,7 @@ config PPC bool default y select HAVE_OPROFILE + select HAVE_KPROBES config EARLY_PRINTK bool Index: linux-2.6-lttng/arch/ppc/Kconfig =================================================================== --- linux-2.6-lttng.orig/arch/ppc/Kconfig 2007-11-15 21:23:35.000000000 -0500 +++ linux-2.6-lttng/arch/ppc/Kconfig 2007-11-15 21:33:43.000000000 -0500 @@ -43,6 +43,7 @@ config PPC bool default y select HAVE_OPROFILE + select HAVE_KPROBES config PPC32 bool Index: linux-2.6-lttng/arch/s390/Kconfig =================================================================== --- linux-2.6-lttng.orig/arch/s390/Kconfig 2007-11-15 21:23:35.000000000 -0500 +++ linux-2.6-lttng/arch/s390/Kconfig 2007-11-15 21:33:43.000000000 -0500 @@ -52,6 +52,7 @@ mainmenu "Linux Kernel Configuration" config S390 def_bool y select HAVE_OPROFILE + select HAVE_KPROBES source "init/Kconfig" Index: linux-2.6-lttng/arch/sparc64/Kconfig =================================================================== --- linux-2.6-lttng.orig/arch/sparc64/Kconfig 2007-11-15 21:23:35.000000000 -0500 +++ linux-2.6-lttng/arch/sparc64/Kconfig 2007-11-15 21:33:43.000000000 -0500 @@ -9,6 +9,7 @@ config SPARC bool default y select HAVE_OPROFILE + select HAVE_KPROBES config SPARC64 bool Index: linux-2.6-lttng/kernel/Kconfig.instrumentation =================================================================== --- linux-2.6-lttng.orig/kernel/Kconfig.instrumentation 2007-11-15 21:23:35.000000000 -0500 +++ linux-2.6-lttng/kernel/Kconfig.instrumentation 2007-11-15 21:33:43.000000000 -0500 @@ -35,7 +35,7 @@ config HAVE_OPROFILE config KPROBES bool "Kprobes" depends on KALLSYMS && MODULES - depends on X86_32 || IA64 || PPC || S390 || SPARC64 || X86_64 || AVR32 + depends on HAVE_KPROBES help Kprobes allows you to trap at almost any kernel address and execute a callback function. register_kprobe() establishes @@ -43,6 +43,9 @@ config KPROBES for kernel debugging, non-intrusive instrumentation and testing. If in doubt, say "N". +config HAVE_KPROBES + def_bool n + config MARKERS bool "Activate markers" help Index: linux-2.6-lttng/arch/x86/Kconfig =================================================================== --- linux-2.6-lttng.orig/arch/x86/Kconfig 2007-11-15 21:25:00.000000000 -0500 +++ linux-2.6-lttng/arch/x86/Kconfig 2007-11-15 21:34:59.000000000 -0500 @@ -20,6 +20,7 @@ config X86 bool default y select HAVE_OPROFILE + select HAVE_KPROBES config GENERIC_TIME bool -- 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 [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/