jeff 2007-12-15 23:13:32 UTC FreeBSD src repository
Modified files: sys/conf options sys/kern kern_mutex.c kern_rwlock.c kern_sx.c kern_thread.c sched_4bsd.c sched_ule.c subr_lock.c sys/sys _lock.h lock_profile.h proc.h sx.h Log: - Re-implement lock profiling in such a way that it no longer breaks the ABI when enabled. There is no longer an embedded lock_profile_object in each lock. Instead a list of lock_profile_objects is kept per-thread for each lock it may own. The cnt_hold statistic is now always 0 to facilitate this. - Support shared locking by tracking individual lock instances and statistics in the per-thread per-instance lock_profile_object. - Make the lock profiling hash table a per-cpu singly linked list with a per-cpu static lock_prof allocator. This removes the need for an array of spinlocks and reduces cache contention between cores. - Use a seperate hash for spinlocks and other locks so that only a critical_enter() is required and not a spinlock_enter() to modify the per-cpu tables. - Count time spent spinning in the lock statistics. - Remove the LOCK_PROFILE_SHARED option as it is always supported now. - Specifically drop and release the scheduler locks in both schedulers since we track owners now. In collaboration with: Kip Macy Sponsored by: Nokia Revision Changes Path 1.613 +0 -1 src/sys/conf/options 1.203 +6 -20 src/sys/kern/kern_mutex.c 1.33 +7 -24 src/sys/kern/kern_rwlock.c 1.58 +9 -25 src/sys/kern/kern_sx.c 1.263 +2 -0 src/sys/kern/kern_thread.c 1.112 +6 -1 src/sys/kern/sched_4bsd.c 1.219 +6 -0 src/sys/kern/sched_ule.c 1.19 +433 -221 src/sys/kern/subr_lock.c 1.15 +0 -25 src/sys/sys/_lock.h 1.16 +27 -112 src/sys/sys/lock_profile.h 1.497 +2 -0 src/sys/sys/proc.h 1.38 +1 -3 src/sys/sys/sx.h _______________________________________________ cvs-all@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/cvs-all To unsubscribe, send any mail to "[EMAIL PROTECTED]"