tracehook: CONFIG_HAVE_ARCH_TRACEHOOK (1f5a4ad9) · Commits · 戴 / test

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 <roland@redhat.com> Cc: Oleg Nesterov <oleg@tv-sign.ru> Reviewed-by:

Ingo Molnar <mingo@elte.hu> Signed-off-by:

Andrew Morton <akpm@linux-foundation.org> Signed-off-by:

Linus Torvalds <torvalds@linux-foundation.org>

arch/Kconfig

+18 −0

Original line number	Diff line number	Diff line
		@@ -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

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