Commit-ID: 01bdee64f9cf8e15f998bf52789ed9d0ebdfa621 Gitweb: https://git.kernel.org/tip/01bdee64f9cf8e15f998bf52789ed9d0ebdfa621 Author: Masami Hiramatsu <mhiramat@xxxxxxxxxx> AuthorDate: Fri, 22 Jun 2018 15:07:40 +0900 Committer: Ingo Molnar <mingo@xxxxxxxxxx> CommitDate: Fri, 22 Jun 2018 11:10:55 +0200 kprobes/Documentation: Fix various typos Fix typos and clean up the wording, with the help of Randy Dunlap. Suggested-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> Signed-off-by: Masami Hiramatsu <mhiramat@xxxxxxxxxx> Cc: Ananth N Mavinakayanahalli <ananth@xxxxxxxxxxxxxxxxxx> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: Jonathan Corbet <corbet@xxxxxxx> Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx> Cc: Steven Rostedt <rostedt@xxxxxxxxxxx> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx> Cc: linux-arch@xxxxxxxxxxxxxxx Cc: linux-doc@xxxxxxxxxxxxxxx Link: http://lkml.kernel.org/r/20180622150740.bd26241032c972d86e23bf73@xxxxxxxxxx Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx> --- Documentation/kprobes.txt | 24 ++++++++++++------------ 1 file changed, 12 insertions(+), 12 deletions(-) diff --git a/Documentation/kprobes.txt b/Documentation/kprobes.txt index 13d8efdb9718..10f4499e677c 100644 --- a/Documentation/kprobes.txt +++ b/Documentation/kprobes.txt @@ -83,22 +83,22 @@ Execution then continues with the instruction following the probepoint. Changing Execution Path ----------------------- -Since the kprobes can probe into a running kernel code, it can change -the register set, including instruction pointer. This operation -requires maximum attention, such as keeping the stack frame, recovering -execution path etc. Since it is operated on running kernel and need deep -knowladge of the archtecture and concurrent computing, you can easily -shot your foot. +Since kprobes can probe into a running kernel code, it can change the +register set, including instruction pointer. This operation requires +maximum care, such as keeping the stack frame, recovering the execution +path etc. Since it operates on a running kernel and needs deep knowledge +of computer architecture and concurrent computing, you can easily shoot +your foot. If you change the instruction pointer (and set up other related -registers) in pre_handler, you must return !0 so that the kprobes -stops single stepping and just returns to given address. +registers) in pre_handler, you must return !0 so that kprobes stops +single stepping and just returns to the given address. This also means post_handler should not be called anymore. -Note that this operation may be harder on some architectures which -use TOC (Table of Contents) for function call, since you have to -setup new TOC for your function in your module, and recover old -one after back from it. +Note that this operation may be harder on some architectures which use +TOC (Table of Contents) for function call, since you have to setup a new +TOC for your function in your module, and recover the old one after +returning from it. Return Probes ------------- -- To unsubscribe from this list: send the line "unsubscribe linux-tip-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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