Messages in this thread | | | Date | Thu, 22 Oct 2015 13:14:07 +0800 | From | Minfei Huang <> | Subject | Re: [REPOST PATCH] ftrace: Calculate the correct dyn_ftrace number to report to the userspace |
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On 10/15/15 at 10:25pm, Steven Rostedt wrote: > On Thu, 17 Sep 2015 00:19:42 +0800 > Minfei Huang <mnfhuang@gmail.com> wrote: > > > Now, ftrace only calculate the dyn_ftrace number in the adding > > breakpoint loop, not in adding update and finish update loop. > > > > Calculate the correct dyn_ftrace, once ftrace reports the failure message > > to the userspace. > > > > Bah, your emails got lost in my Inbox. Sorry about that. > > I'll make an effort to look at this first thing tomorrow.
Ping. Any comment is appreciate.
Thanks Minfei
> > [ Cc'ing myself to remind me ] > > -- Steve > > > Signed-off-by: Minfei Huang <mnfhuang@gmail.com> > > --- > > arch/x86/kernel/ftrace.c | 4 ++++ > > 1 file changed, 4 insertions(+) > > > > diff --git a/arch/x86/kernel/ftrace.c b/arch/x86/kernel/ftrace.c > > index 8b7b0a5..311bcf3 100644 > > --- a/arch/x86/kernel/ftrace.c > > +++ b/arch/x86/kernel/ftrace.c > > @@ -556,6 +556,7 @@ void ftrace_replace_code(int enable) > > run_sync(); > > > > report = "updating code"; > > + count = 0; > > > > for_ftrace_rec_iter(iter) { > > rec = ftrace_rec_iter_record(iter); > > @@ -563,11 +564,13 @@ void ftrace_replace_code(int enable) > > ret = add_update(rec, enable); > > if (ret) > > goto remove_breakpoints; > > + count++; > > } > > > > run_sync(); > > > > report = "removing breakpoints"; > > + count = 0; > > > > for_ftrace_rec_iter(iter) { > > rec = ftrace_rec_iter_record(iter); > > @@ -575,6 +578,7 @@ void ftrace_replace_code(int enable) > > ret = finish_update(rec, enable); > > if (ret) > > goto remove_breakpoints; > > + count++; > > } > > > > run_sync(); >
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