Date: Sun, 7 Apr 2002 19:42:55 -0700 (PDT) From: Jeff Roberson <jeff@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/vm uma_core.c uma_int.h Message-ID: <200204080242.g382gtH49929@freefall.freebsd.org>
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jeff 2002/04/07 19:42:55 PDT
Modified files:
sys/vm uma_core.c uma_int.h
Log:
Rework most of the bucket allocation and free code so that per cpu locks are
never held across blocking operations. Also, fix two other lock order
reversals that were exposed by jhb's witness change.
The free path previously had a bug that would cause it to skip the free bucket
list in some cases and go straight to allocating a new bucket. This has been
fixed as well.
These changes made the bucket handling code much cleaner and removed quite a
few lock operations. This should be marginally faster now.
It is now possible to call malloc w/o Giant and avoid any witness warnings.
This still isn't entirely safe though because malloc_type statistics are not
protected by any lock.
Revision Changes Path
1.7 +191 -214 src/sys/vm/uma_core.c
1.5 +2 -1 src/sys/vm/uma_int.h
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