Hello, This is the 6th version of the series for removing jprobe. Previous version is here: https://lkml.org/lkml/2018/6/4/681 In this version, I fixed x86 and powerpc kprobe_ftrace_handler to include post-handler emulation code according to Naveen's suggestion. This also simplifies [24/27] a bit. Also fixed some typo in patch description. Series structure ===== Basically this series introduces 3 major changes; - Remove jprobe implementation ([2/27] - [12/27]) - Remove break_handler() related code ([13/27] - [23/27]) This should be done after (or with) removing jprobe because break_handler is only used by jprobe. (I'm not so sure, should I merge above patches into one arch-wide patch as next one does?) - Clean current_kprobe and enable preempt if pre_handler() returns !0 ([24/27] and [25/27]<- x86 specific update) This also depends on above patches because those current_kprobe and preemption are expected to be adjusted by jprobe implementation via break_handler. And some minor changes; - Document cleanup and update ([1/27], [26/27]) And finally remove jprobe stub APIs and break_handler from kprobes.h ([27/27]). Of course this depends on above patches. Result ===== I've tested it with kprobe sanity test on x86-64, and arm64 but for other archs, I just did cross-build test. Thank you, --- Masami Hiramatsu (27): Documentation/kprobes: Fix to remove remaining jprobe kprobes: Remove jprobe API implementation kprobes/x86: Remove jprobe implementation ARC: kprobes: Remove jprobe implementation ARM: kprobes: Remove jprobe arm implementation arm64: kprobes: Remove jprobe implementation powerpc/kprobes: Remove jprobe powerpc implementation ia64: kprobes: Remove jprobe implementation MIPS: kprobes: Remove jprobe implementation s390/kprobes: Remove jprobe implementation sh: kprobes: Remove jprobe implementation sparc64: kprobes: Remove jprobe implementation kprobes: Don't check the ->break_handler() in generic kprobes code kprobes/x86: Don't call ->break_handler() in x86 kprobes ARC: kprobes: Don't call the ->break_handler() in ARC kprobes code ARM: kprobes: Don't call the ->break_handler() in arm kprobes code arm64: kprobes: Don't call the ->break_handler() in arm64 kprobes code powerpc/kprobes: Don't call the ->break_handler() in powerpc kprobes code ia64: kprobes: Don't call the ->break_handler() in ia64 kprobes code MIPS: kprobes: Don't call the ->break_handler() in MIPS kprobes code s390/kprobes: Don't call the ->break_handler() in s390 kprobes code sh: kprobes: Don't call the ->break_handler() in SH kprobes code sparc64: kprobes: Don't call the ->break_handler() in sparc64 kprobes code bpf: error-inject: kprobes: Clear current_kprobe and enable preempt in kprobe kprobes/x86: Do not disable preempt on int3 path Documentation: kprobes: Add how to change the execution path kprobes: Remove jprobe stub API Documentation/kprobes.txt | 35 +++++- arch/arc/include/asm/kprobes.h | 2 arch/arc/kernel/kprobes.c | 50 +-------- arch/arm/include/asm/kprobes.h | 2 arch/arm/include/asm/probes.h | 1 arch/arm/probes/kprobes/core.c | 135 +----------------------- arch/arm64/include/asm/kprobes.h | 1 arch/arm64/kernel/probes/kprobes.c | 86 +-------------- arch/ia64/include/asm/kprobes.h | 2 arch/ia64/include/uapi/asm/break.h | 1 arch/ia64/kernel/Makefile | 2 arch/ia64/kernel/jprobes.S | 90 ---------------- arch/ia64/kernel/kprobes.c | 93 +---------------- arch/mips/include/asm/kprobes.h | 13 -- arch/mips/kernel/kprobes.c | 70 ++---------- arch/powerpc/include/asm/kprobes.h | 12 -- arch/powerpc/kernel/kprobes-ftrace.c | 72 ++----------- arch/powerpc/kernel/kprobes.c | 92 +++------------- arch/powerpc/kernel/trace/ftrace_64_mprofile.S | 39 +------ arch/s390/include/asm/kprobes.h | 2 arch/s390/kernel/kprobes.c | 86 +-------------- arch/sh/include/asm/kprobes.h | 4 - arch/sh/kernel/kprobes.c | 72 +------------ arch/sparc/include/asm/kprobes.h | 1 arch/sparc/kernel/kprobes.c | 65 +----------- arch/x86/include/asm/kprobes.h | 5 - arch/x86/kernel/kprobes/common.h | 10 -- arch/x86/kernel/kprobes/core.c | 119 +-------------------- arch/x86/kernel/kprobes/ftrace.c | 49 ++------- arch/x86/kernel/kprobes/opt.c | 1 include/linux/kprobes.h | 53 --------- kernel/fail_function.c | 3 - kernel/kprobes.c | 115 +------------------- kernel/test_kprobes.c | 94 ----------------- kernel/trace/trace_kprobe.c | 11 +- lib/Kconfig.debug | 2 36 files changed, 139 insertions(+), 1351 deletions(-) delete mode 100644 arch/ia64/kernel/jprobes.S -- Masami Hiramatsu (Linaro)
