From: David Mosberger <davidm@napali.hpl.hp.com>
To: linux-ia64@vger.kernel.org
Subject: RE: syscall exit path optimization
Date: Thu, 27 Jan 2005 23:50:42 +0000 [thread overview]
Message-ID: <16889.32338.355622.505299@napali.hpl.hp.com> (raw)
In-Reply-To: <200501262102.j0QL2Qg28166@unix-os.sc.intel.com>
>>>>> On Thu, 27 Jan 2005 15:44:42 -0800, "Chen, Kenneth W" <kenneth.w.chen@intel.com> said:
Ken> David Mosberger wrote on Wednesday, January 26, 2005 1:31 PM
>> Couldn't you restore r8/r10 after .work_pending is done in if
>> pLvSys is TRUE? That way, .work_processed would simply preserve
>> (save _and_ restore) r8/r10.
Ken> Thank you for reviewing and the suggestion. Here is the
Ken> updated patch, net saving for 6 cycles compares to 4 with
Ken> earlier version.
Tidy _and_ faster---not bad at all for a net change of one extra line!
Good work.
--david
prev parent reply other threads:[~2005-01-27 23:50 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-26 21:02 syscall exit path optimization Chen, Kenneth W
2005-01-26 21:30 ` David Mosberger
2005-01-26 21:54 ` Chen, Kenneth W
2005-01-27 23:44 ` Chen, Kenneth W
2005-01-27 23:50 ` David Mosberger [this message]
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