Remove MODULES dependency by migrating from module_alloc() to the new text_alloc() API. Essentially these changes provide preliminaries for allowing to compile a static kernel with a proper tracing support. The same API can be used later on in other sites that allocate space for trampolines, and trivially scaled to other arch's. An arch can inform with CONFIG_ARCH_HAS_TEXT_ALLOC that it's providing implementation for text_alloc(). Cc: linux-mm@xxxxxxxxx Cc: Andi Kleen <ak@xxxxxxxxxxxxxxx> Cc: Masami Hiramatsu <mhiramat@xxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> v4: * Squash lock_modules() patches into one. * Remove fallback versions of text_alloc() and text_free(). Instead, use ARCH_HAS_TEXT_ALLOC at site when required. * Use lockdep_assert_irqs_enabled() in text_free() instead of WARN_ON(in_interrupt()). v3: * Make text_alloc() API disjoint. * Remove all the possible extra clutter not absolutely required and split into more logical pieces. Jarkko Sakkinen (6): kprobes: Remove dependency to the module_mutex vmalloc: Add text_alloc() and text_free() arch/x86: Implement text_alloc() and text_free() arch/x86: kprobes: Use text_alloc() and text_free() kprobes: Use text_alloc() and text_free() kprobes: Remove CONFIG_MODULES dependency arch/Kconfig | 2 +- arch/x86/Kconfig | 3 ++ arch/x86/kernel/Makefile | 1 + arch/x86/kernel/kprobes/core.c | 4 +-- arch/x86/kernel/text_alloc.c | 41 +++++++++++++++++++++++ include/linux/module.h | 32 ++++++++++++++---- include/linux/vmalloc.h | 17 ++++++++++ kernel/kprobes.c | 61 +++++++++++++++++++++++----------- kernel/trace/trace_kprobe.c | 20 ++++++++--- 9 files changed, 147 insertions(+), 34 deletions(-) create mode 100644 arch/x86/kernel/text_alloc.c -- 2.25.1
