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| author | Masami Hiramatsu <mhiramat@kernel.org> | 2018-06-22 15:07:40 +0900 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-06-22 11:10:55 +0200 |
| commit | 01bdee64f9cf8e15f998bf52789ed9d0ebdfa621 (patch) | |
| tree | aedfe901dc8306d0a124b440247afeaa9d16e0ec /Documentation/kprobes.txt | |
| parent | 0722867dcbc28cc9b269b57acd847c7c1aa638d6 (diff) | |
kprobes/Documentation: Fix various typos
Fix typos and clean up the wording, with the help of Randy Dunlap.
Suggested-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-arch@vger.kernel.org
Cc: linux-doc@vger.kernel.org
Link: http://lkml.kernel.org/r/20180622150740.bd26241032c972d86e23bf73@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'Documentation/kprobes.txt')
| -rw-r--r-- | Documentation/kprobes.txt | 24 |
1 files 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 ------------- |