From: Masami Hiramatsu (Google) <[email protected]> Add CONFIG_HAVE_POST_BREAKPOINT_HOOK which indicates the hw_breakpoint on that architecture fires after the target memory has been modified. This is currently x86 only behavior.
Signed-off-by: Masami Hiramatsu (Google) <[email protected]> --- arch/Kconfig | 10 ++++++++++ arch/x86/Kconfig | 1 + kernel/trace/Kconfig | 1 + 3 files changed, 12 insertions(+) diff --git a/arch/Kconfig b/arch/Kconfig index 31220f512b16..64adda21c5f6 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -453,6 +453,16 @@ config HAVE_MIXED_BREAKPOINTS_REGS Select this option if your arch implements breakpoints under the latter fashion. +config HAVE_POST_BREAKPOINT_HOOK + bool + depends on HAVE_HW_BREAKPOINT + help + Depending on the arch implementation of hardware breakpoints, + some of them provide breakpoint hook after the target memory + is modified. + Select this option if your arch implements breakpoints overflow + handler hooks after the target memory is modified. + config HAVE_USER_RETURN_NOTIFIER bool diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index 80527299f859..755fd3bd4334 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -246,6 +246,7 @@ config X86 select HAVE_FUNCTION_TRACER select HAVE_GCC_PLUGINS select HAVE_HW_BREAKPOINT + select HAVE_POST_BREAKPOINT_HOOK select HAVE_IOREMAP_PROT select HAVE_IRQ_EXIT_ON_IRQ_STACK if X86_64 select HAVE_IRQ_TIME_ACCOUNTING diff --git a/kernel/trace/Kconfig b/kernel/trace/Kconfig index e09494c09cd5..087a27b56eb1 100644 --- a/kernel/trace/Kconfig +++ b/kernel/trace/Kconfig @@ -851,6 +851,7 @@ config WPROBE_EVENTS bool "Enable wprobe-based dynamic events" depends on TRACING depends on HAVE_HW_BREAKPOINT + depends on HAVE_POST_BREAKPOINT_HOOK select PROBE_EVENTS select DYNAMIC_EVENTS help
