Date: Sun, 17 May 1998 16:08:04 -0700 (PDT) From: Tor Egge <tegge@FreeBSD.ORG> To: cvs-committers@FreeBSD.ORG, cvs-all@FreeBSD.ORG, cvs-sys@FreeBSD.ORG Subject: cvs commit: src/sys/i386/include globaldata.h src/sys/i386/i386 genassym.c globals.s simplelock.s mplock.s Message-ID: <199805172308.QAA22119@freefall.freebsd.org>
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tegge 1998/05/17 16:08:04 PDT
Modified files:
sys/i386/include globaldata.h
sys/i386/i386 genassym.c globals.s simplelock.s
mplock.s
Log:
Change simple lock handling to not depend upon having a local apic
available. The per-cpu variable ss_tpr has been replaced by ss_eflags.
This reduced the number of interrupts sent to the wrong CPU, due to
the cpu having the global lock being inside a critical region.
Remove some unneeded manipulation of tpr register in mplock.s.
Adjust code in mplock.s to be aware of variables on the stack being
destroyed by MPgetlock if GRAB_LOPRIO is defined.
Revision Changes Path
1.4 +2 -2 src/sys/i386/include/globaldata.h
1.57 +2 -2 src/sys/i386/i386/genassym.c
1.4 +3 -3 src/sys/i386/i386/globals.s
1.9 +20 -30 src/sys/i386/i386/simplelock.s
1.24 +22 -8 src/sys/i386/i386/mplock.s
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