or simply check out the newer sources.
On Sun, 26 Jan 2003, David O'Brien wrote: > For those trying to actually get some FreeBSD work done today, one may > avoid this commit by: > > cd /sys ; cvs up -D '2003/01/26 03:40:00 PST' > > > ----- Forwarded message from David Xu <[EMAIL PROTECTED]> ----- > > From: David Xu <[EMAIL PROTECTED]> > Subject: cvs commit: src/sys/alpha/alpha trap.c vm_machdep.c src/sys/ddb > db_ps.c src/sys/i386/i386 critical.c exception.s genassym.c trap.c > vm_machdep.c src/sys/ia64/ia64 trap.c vm_machdep.c src/sys/kern > init_main.c kern_clock.c kern_exec.c kern_exit.c kern_fork.c ... > Date: Sun, 26 Jan 2003 03:41:35 -0800 (PST) > To: [EMAIL PROTECTED], [EMAIL PROTECTED] > X-FreeBSD-CVS-Branch: HEAD > > davidxu 2003/01/26 03:41:35 PST > > Modified files: > sys/alpha/alpha trap.c vm_machdep.c > sys/ddb db_ps.c > sys/i386/i386 critical.c exception.s genassym.c trap.c > vm_machdep.c > sys/ia64/ia64 trap.c vm_machdep.c > sys/kern init_main.c kern_clock.c kern_exec.c > kern_exit.c kern_fork.c kern_lock.c > kern_resource.c kern_sig.c kern_switch.c > kern_thread.c subr_prof.c subr_trap.c > subr_witness.c > sys/powerpc/powerpc vm_machdep.c > sys/sparc64/sparc64 trap.c vm_machdep.c > sys/sys buf.h lockmgr.h proc.h resourcevar.h > systm.h > Log: > Move UPCALL related data structure out of kse, introduce a new > data structure called kse_upcall to manage UPCALL. All KSE binding > and loaning code are gone. > > A thread owns an upcall can collect all completed syscall contexts in > its ksegrp, turn itself into UPCALL mode, and takes those contexts back > to userland. Any thread without upcall structure has to export their > contexts and exit at user boundary. > > Any thread running in user mode owns an upcall structure, when it enters > kernel, if the kse mailbox's current thread pointer is not NULL, then > when the thread is blocked in kernel, a new UPCALL thread is created and > the upcall structure is transfered to the new UPCALL thread. if the kse > mailbox's current thread pointer is NULL, then when a thread is blocked > in kernel, no UPCALL thread will be created. > > Each upcall always has an owner thread. Userland can remove an upcall by > calling kse_exit, when all upcalls in ksegrp are removed, the group is > atomatically shutdown. An upcall owner thread also exits when process is > in exiting state. when an owner thread exits, the upcall it owns is also > removed. > > KSE is a pure scheduler entity. it represents a virtual cpu. when a thread > is running, it always has a KSE associated with it. scheduler is free to > assign a KSE to thread according thread priority, if thread priority is changed, > KSE can be moved from one thread to another. > > When a ksegrp is created, there is always N KSEs created in the group. the > N is the number of physical cpu in the current system. This makes it is > possible that even an userland UTS is single CPU safe, threads in kernel still > can execute on different cpu in parallel. Userland calls kse_create to add more > upcall structures into ksegrp to increase concurrent in userland itself, kernel > is not restricted by number of upcalls userland provides. > > The code hasn't been tested under SMP by author due to lack of hardware. > > Reviewed by: julian > > Revision Changes Path > 1.103 +2 -2 src/sys/alpha/alpha/trap.c > http://cvsweb.freebsd.org/src/sys/alpha/alpha/trap.c.diff?r1=1.102&r2=1.103 > 1.80 +1 -1 src/sys/alpha/alpha/vm_machdep.c > http://cvsweb.freebsd.org/src/sys/alpha/alpha/vm_machdep.c.diff?r1=1.79&r2=1.80 > 1.37 +0 -9 src/sys/ddb/db_ps.c > http://cvsweb.freebsd.org/src/sys/ddb/db_ps.c.diff?r1=1.36&r2=1.37 > 1.5 +1 -1 src/sys/i386/i386/critical.c > http://cvsweb.freebsd.org/src/sys/i386/i386/critical.c.diff?r1=1.4&r2=1.5 > 1.100 +3 -0 src/sys/i386/i386/exception.s > http://cvsweb.freebsd.org/src/sys/i386/i386/exception.s.diff?r1=1.99&r2=1.100 > 1.133 +1 -0 src/sys/i386/i386/genassym.c > http://cvsweb.freebsd.org/src/sys/i386/i386/genassym.c.diff?r1=1.132&r2=1.133 > 1.238 +2 -2 src/sys/i386/i386/trap.c > http://cvsweb.freebsd.org/src/sys/i386/i386/trap.c.diff?r1=1.237&r2=1.238 > 1.199 +4 -6 src/sys/i386/i386/vm_machdep.c > http://cvsweb.freebsd.org/src/sys/i386/i386/vm_machdep.c.diff?r1=1.198&r2=1.199 > 1.66 +3 -3 src/sys/ia64/ia64/trap.c > http://cvsweb.freebsd.org/src/sys/ia64/ia64/trap.c.diff?r1=1.65&r2=1.66 > 1.54 +1 -1 src/sys/ia64/ia64/vm_machdep.c > http://cvsweb.freebsd.org/src/sys/ia64/ia64/vm_machdep.c.diff?r1=1.53&r2=1.54 > 1.220 +0 -1 src/sys/kern/init_main.c > http://cvsweb.freebsd.org/src/sys/kern/init_main.c.diff?r1=1.219&r2=1.220 > 1.144 +37 -18 src/sys/kern/kern_clock.c > http://cvsweb.freebsd.org/src/sys/kern/kern_clock.c.diff?r1=1.143&r2=1.144 > 1.211 +0 -3 src/sys/kern/kern_exec.c > http://cvsweb.freebsd.org/src/sys/kern/kern_exec.c.diff?r1=1.210&r2=1.211 > 1.191 +4 -14 src/sys/kern/kern_exit.c > http://cvsweb.freebsd.org/src/sys/kern/kern_exit.c.diff?r1=1.190&r2=1.191 > 1.180 +0 -2 src/sys/kern/kern_fork.c > http://cvsweb.freebsd.org/src/sys/kern/kern_fork.c.diff?r1=1.179&r2=1.180 > 1.61 +20 -20 src/sys/kern/kern_lock.c > http://cvsweb.freebsd.org/src/sys/kern/kern_lock.c.diff?r1=1.60&r2=1.61 > 1.114 +59 -73 src/sys/kern/kern_resource.c > http://cvsweb.freebsd.org/src/sys/kern/kern_resource.c.diff?r1=1.113&r2=1.114 > 1.202 +0 -6 src/sys/kern/kern_sig.c > http://cvsweb.freebsd.org/src/sys/kern/kern_sig.c.diff?r1=1.201&r2=1.202 > 1.48 +56 -178 src/sys/kern/kern_switch.c > http://cvsweb.freebsd.org/src/sys/kern/kern_switch.c.diff?r1=1.47&r2=1.48 > 1.77 +646 -513 src/sys/kern/kern_thread.c > http://cvsweb.freebsd.org/src/sys/kern/kern_thread.c.diff?r1=1.76&r2=1.77 > 1.59 +47 -22 src/sys/kern/subr_prof.c > http://cvsweb.freebsd.org/src/sys/kern/subr_prof.c.diff?r1=1.58&r2=1.59 > 1.240 +31 -24 src/sys/kern/subr_trap.c > http://cvsweb.freebsd.org/src/sys/kern/subr_trap.c.diff?r1=1.239&r2=1.240 > 1.134 +1 -1 src/sys/kern/subr_witness.c > http://cvsweb.freebsd.org/src/sys/kern/subr_witness.c.diff?r1=1.133&r2=1.134 > 1.83 +1 -1 src/sys/powerpc/powerpc/vm_machdep.c > http://cvsweb.freebsd.org/src/sys/powerpc/powerpc/vm_machdep.c.diff?r1=1.82&r2=1.83 > 1.52 +2 -2 src/sys/sparc64/sparc64/trap.c > http://cvsweb.freebsd.org/src/sys/sparc64/sparc64/trap.c.diff?r1=1.51&r2=1.52 > 1.36 +1 -1 src/sys/sparc64/sparc64/vm_machdep.c > http://cvsweb.freebsd.org/src/sys/sparc64/sparc64/vm_machdep.c.diff?r1=1.35&r2=1.36 > 1.141 +1 -1 src/sys/sys/buf.h > http://cvsweb.freebsd.org/src/sys/sys/buf.h.diff?r1=1.140&r2=1.141 > 1.36 +4 -4 src/sys/sys/lockmgr.h > http://cvsweb.freebsd.org/src/sys/sys/lockmgr.h.diff?r1=1.35&r2=1.36 > 1.290 +72 -74 src/sys/sys/proc.h > http://cvsweb.freebsd.org/src/sys/sys/proc.h.diff?r1=1.289&r2=1.290 > 1.31 +2 -4 src/sys/sys/resourcevar.h > http://cvsweb.freebsd.org/src/sys/sys/resourcevar.h.diff?r1=1.30&r2=1.31 > 1.186 +1 -1 src/sys/sys/systm.h > http://cvsweb.freebsd.org/src/sys/sys/systm.h.diff?r1=1.185&r2=1.186 > > ----- End forwarded message ----- > > To Unsubscribe: send mail to [EMAIL PROTECTED] > with "unsubscribe freebsd-current" in the body of the message > To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
