Enable early kprobes in Kconfig. Currently only allow early kprobes for ARM. Following patchs will deal with KPROBES_ON_FTRACE. After that x86 will also be enabled.
Signed-off-by: Wang Nan <[email protected]> --- arch/Kconfig | 19 +++++++++++++++++++ arch/arm/Kconfig | 1 + 2 files changed, 20 insertions(+) diff --git a/arch/Kconfig b/arch/Kconfig index 05d7a8a..8a772ab 100644 --- a/arch/Kconfig +++ b/arch/Kconfig @@ -46,6 +46,22 @@ config KPROBES for kernel debugging, non-intrusive instrumentation and testing. If in doubt, say "N". +config EARLY_KPROBES + bool "Enable kprobes at very early booting stage" + depends on KPROBES + depends on HAVE_EARLY_KPROBES + def_bool y + help + Enable kprobe at very early booting stage. + +config NR_EARLY_KPROBES_SLOTS + int "Number of possible early kprobes" + range 1 64 + default 16 + depends on EARLY_KPROBES + help + Number of early kprobes slots. + config JUMP_LABEL bool "Optimize very unlikely/likely branches" depends on HAVE_ARCH_JUMP_LABEL @@ -170,6 +186,9 @@ config HAVE_IOREMAP_PROT config HAVE_KPROBES bool +config HAVE_EARLY_KPROBES + bool + config HAVE_KRETPROBES bool diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 9f1f09a..84ad7f9 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -43,6 +43,7 @@ config ARM select HAVE_DMA_ATTRS select HAVE_DMA_CONTIGUOUS if MMU select HAVE_DYNAMIC_FTRACE if (!XIP_KERNEL) + select HAVE_EARLY_KPROBES if (HAVE_KPROBES) select HAVE_EFFICIENT_UNALIGNED_ACCESS if (CPU_V6 || CPU_V6K || CPU_V7) && MMU select HAVE_FTRACE_MCOUNT_RECORD if (!XIP_KERNEL) select HAVE_FUNCTION_GRAPH_TRACER if (!THUMB2_KERNEL) -- 1.8.4 -- 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/
