Date: Tue, 27 Jan 2004 12:21:07 -0800 (PST) From: Robert Watson <rwatson@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/sys proc.h Message-ID: <200401272021.i0RKL7YC091228@repoman.freebsd.org>
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rwatson 2004/01/27 12:21:07 PST
FreeBSD src repository
Modified files:
sys/sys proc.h
Log:
Allow the use of a stale p_stops value in STOPEVENT(), grabbing
the proc lock only if we actually need to perform a stop. This
avoids two locks and unlocks of the process lock each system call,
and wins me about 20% on a simply system call test (getuid(),
which would otherwise require no locking). This also has a net
improvement of about 10MB/s on some of the SMP bandwidth tests
I'm running.
Reviewed by: jhb
Revision Changes Path
1.366 +5 -3 src/sys/sys/proc.h
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