Date: Thu, 30 Aug 2001 11:50:57 -0700 (PDT) From: Matt Dillon <dillon@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/alpha/alpha trap.c src/sys/i386/i386 trap.c src/sys/i386/linux linux_sysvec.c src/sys/kern init_sysent.c kern_ktrace.c kern_sig.c makesyscalls.sh subr_trap.c syscalls.c syscalls.master src/sys/sparc64/sparc64 trap.c src/sys/sys ... Message-ID: <200108301850.f7UIovg29154@freefall.freebsd.org>
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dillon 2001/08/30 11:50:57 PDT
Modified files:
sys/alpha/alpha trap.c
sys/i386/i386 trap.c
sys/i386/linux linux_sysvec.c
sys/kern init_sysent.c kern_ktrace.c kern_sig.c
makesyscalls.sh subr_trap.c syscalls.c
syscalls.master
sys/sparc64/sparc64 trap.c
sys/sys syscall-hide.h syscall.h syscall.mk
sysproto.h
Log:
Remove the MPSAFE keyword from the parser for syscalls.master.
Instead introduce the [M] prefix to existing keywords. e.g.
MSTD is the MP SAFE version of STD. This is prepatory for a
massive Giant lock pushdown. The old MPSAFE keyword made
syscalls.master too messy.
Begin comments MP-Safe procedures with the comment:
/*
* MPSAFE
*/
This comments means that the procedure may be called without
Giant held (The procedure itself may still need to obtain
Giant temporarily to do its thing).
sv_prepsyscall() is now MP SAFE and assumed to be MP SAFE
sv_transtrap() is now MP SAFE and assumed to be MP SAFE
ktrsyscall() and ktrsysret() are now MP SAFE (Giant Pushdown)
trapsignal() is now MP SAFE (Giant Pushdown)
Places which used to do the if (mtx_owned(&Giant)) mtx_unlock(&Giant)
test in syscall[2]() in */*/trap.c now do not. Instead they
explicitly unlock Giant if they previously obtained it, and then
assert that it is no longer held to catch broken system calls.
Rebuild syscall tables.
Revision Changes Path
1.75 +5 -9 src/sys/alpha/alpha/trap.c
1.201 +12 -18 src/sys/i386/i386/trap.c
1.84 +6 -1 src/sys/i386/linux/linux_sysvec.c
1.102 +0 -0 src/sys/kern/init_sysent.c
1.55 +11 -1 src/sys/kern/kern_ktrace.c
1.129 +5 -1 src/sys/kern/kern_sig.c
1.46 +31 -8 src/sys/kern/makesyscalls.sh
1.198 +4 -5 src/sys/kern/subr_trap.c
1.91 +0 -0 src/sys/kern/syscalls.c
1.92 +33 -31 src/sys/kern/syscalls.master
1.10 +5 -13 src/sys/sparc64/sparc64/trap.c
1.85 +0 -0 src/sys/sys/syscall-hide.h
1.89 +0 -0 src/sys/sys/syscall.h
1.43 +0 -0 src/sys/sys/syscall.mk
1.79 +0 -0 src/sys/sys/sysproto.h
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