From: David Smith <dsmith@redhat.com>
To: Santosh Shukla <sshukla@mvista.com>, systemtap@sourceware.org
Subject: Re: [SYSTEMTAP/PATCH 0/4] RT aware systemtap patch set
Date: Mon, 15 Sep 2014 14:13:00 -0000 [thread overview]
Message-ID: <5416F410.7090009@redhat.com> (raw)
In-Reply-To: <CAAyOgsYpSz3MFe7gOVFjorN=gYuu_2tLf5DAG0dUwhJGx7r2qw@mail.gmail.com>
On 09/15/2014 05:17 AM, Santosh Shukla wrote:
> Ping!
>
> do we care about making stap -rt aware. Just an fyi that I revisited
> my patch specially 2nd patch and found some serious improvement to be
> done.. RCU use to replace rd/wr lock just not right, So I am spinning
> the patch series. Also I am thinking to come up with locking helper
> function API on raw_locking vs existing spin lock so to avoid
> cluttering the code.
Santosh,
Sorry about not responding sooner. Making systemtap work better on -rt
kernels would be nice, if the changes aren't too disruptive. I meant to
find the -rt kernel and test your patches last week but I ended up not
finding the time. Luckily for me you've got a 2nd patch set coming...
I'll try to review the 2nd patch set when you get it finished. Here's a
question I've got, do you think the -rt patches will cause any
performance changes (positive or negative) on the regular kernel?
--
David Smith
dsmith@redhat.com
Red Hat
http://www.redhat.com
256.217.0141 (direct)
256.837.0057 (fax)
next prev parent reply other threads:[~2014-09-15 14:13 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-09-09 7:08 Santosh Shukla
2014-09-09 7:08 ` [SYSTEMTAP/PATCH 2/4] rt : replace read write lock with rcu Santosh Shukla
2014-09-09 7:08 ` [SYSTEMTAP/PATCH 1/4] rt : replace __stp_tf_task_work_list_lock to raw_ Santosh Shukla
2014-09-09 7:08 ` [SYSTEMTAP/PATCH 3/4] rt : stp_utrace.c : replace utrace->lock with raw_lock Santosh Shukla
2014-09-09 7:09 ` [SYSTEMTAP/PATCH 4/4] rt : replace utrace_struct lock to raw lock Santosh Shukla
2014-09-15 10:17 ` [SYSTEMTAP/PATCH 0/4] RT aware systemtap patch set Santosh Shukla
2014-09-15 14:13 ` David Smith [this message]
2014-09-15 15:41 ` Santosh Shukla
2014-09-15 16:22 ` Josh Stone
2014-09-15 16:35 ` Santosh Shukla
2014-09-15 16:45 ` Josh Stone
2014-09-15 16:48 ` Santosh Shukla
2014-09-15 16:51 ` Santosh Shukla
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