From: Roland McGrath Date: Sat, 26 Jul 2008 02:45:57 +0000 (-0700) Subject: tracehook: CONFIG_HAVE_ARCH_TRACEHOOK X-Git-Tag: v2.6.27-rc1~123 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1f5a4ad97a0e7b663d527ecc02aabe203d000d91;p=linux-2.6 tracehook: CONFIG_HAVE_ARCH_TRACEHOOK This adds the generic HAVE_ARCH_TRACEHOOK kconfig item. Each arch should add to some Kconfig file: select HAVE_ARCH_TRACEHOOK if the arch code uses all the latest hooks to enable newfangled tracing and debugging code. The comment in arch/Kconfig lists all the prerequisite arch support. When all these are available, setting HAVE_ARCH_TRACEHOOK will allow enabling any new features that depend on the modern arch interfaces. Signed-off-by: Roland McGrath Cc: Oleg Nesterov Reviewed-by: Ingo Molnar Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- diff --git a/arch/Kconfig b/arch/Kconfig index b0fabfa864..364c6dadde 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -59,6 +59,24 @@ config HAVE_KPROBES config HAVE_KRETPROBES def_bool n +# +# An arch should select this if it provides all these things: +# +# task_pt_regs() in asm/processor.h or asm/ptrace.h +# arch_has_single_step() if there is hardware single-step support +# arch_has_block_step() if there is hardware block-step support +# arch_ptrace() and not #define __ARCH_SYS_PTRACE +# compat_arch_ptrace() and #define __ARCH_WANT_COMPAT_SYS_PTRACE +# asm/syscall.h supplying asm-generic/syscall.h interface +# linux/regset.h user_regset interfaces +# CORE_DUMP_USE_REGSET #define'd in linux/elf.h +# TIF_SYSCALL_TRACE calls tracehook_report_syscall_{entry,exit} +# TIF_NOTIFY_RESUME calls tracehook_notify_resume() +# signal delivery calls tracehook_signal_handler() +# +config HAVE_ARCH_TRACEHOOK + def_bool n + config HAVE_DMA_ATTRS def_bool n