On Mon, 22 May 2017 12:23:08 +0900 Masami Hiramatsu <mhira...@kernel.org> wrote:
> Hi Steve, > > On Fri, 21 Apr 2017 17:30:29 -0400 > Steven Rostedt <rost...@goodmis.org> wrote: > > > From: "Steven Rostedt (VMware)" <rost...@goodmis.org> > > > > The set_ftrace_file lists both functions that are filtered, as well as > > function probes (triggers) that are attached to a function, like traceon or > > stacktrace, etc. The reading of this file is not as trivial as most pseudo > > files are, and there's been various bugs that have appeared in the past > > when there's a mix of probes and functions listed. There's also a difference > > when reading the file using dd with a block size of 1. > > Would you know which commit fixed this dd/cat differences on > set_ftrace_filter? When I've run this test on 4.9-stable kernel, > it failed because the result of "dd -bs=1" and "cat" on > set_ftrace_filter were different. > Probably one of the patches in this series before this one. -- Steve
