FreeBSD source tree https://cgit-dev.freebsd.org/src/atom?h=upstream%2F11.0.0 2016-09-02T01:41:57Z 2016-09-02T01:41:57Z Nathan Whitehorn nwhitehorn@FreeBSD.org 2016-09-02T01:41:57Z urn:sha1:bc37050e4215a5bb6c709bc7bc1cb2a65ceab203 MFC r305108,305109: Refix operation on sparse CPU mappings as in r302372, temporarily broken by r304716. PR: kern/210106 Approved by: re (gjb) 2016-08-24T01:56:30Z Stephen Hurd shurd@FreeBSD.org 2016-08-24T01:56:30Z urn:sha1:ccf787d1648d7578df987c7cb8dec56205ea1128 - Move group task queue into kern/subr_gtaskqueue.c - Change intr_enable to return an int so it can be detected if it's not implemented - Allow different TX/RX queues per set to be different sizes - Don't split up TX mbufs before transmit - Allow a completion queue for TX as well as RX - Pass the RX budget to isc_rxd_available() to allow an earlier return and avoid multiple calls Approved by: re (glb), davidch Requested by: shurd 2016-08-20T11:59:19Z Bryan Drewery bdrewery@FreeBSD.org 2016-08-20T11:59:19Z urn:sha1:ed982599f0f9def27977639701622e601b201742 MFC r304288: Garbage collect _umtx_lock(2)/_umtx_unlock(2) references removed in r263318. Approved by: re (gjb) 2016-08-11T09:28:49Z Mateusz Guzik mjg@FreeBSD.org 2016-08-11T09:28:49Z urn:sha1:0b3fd3a792eaa673f9012bded915c5c2a9bf89e3 rwlock: s/READER/WRITER/ in wlock lockstat annotation == sx: increment spin_cnt before cpu_spinwait in xlock The change is a no-op only done for consistency with the rest of the file. == locks: change sleep_cnt and spin_cnt types to u_int Both variables are uint64_t, but they only count spins or sleeps. All reasonable values which we can get here comfortably hit in 32-bit range. == Implement trivial backoff for locking primitives. All current spinning loops retry an atomic op the first chance they get, which leads to performance degradation under load. One classic solution to the problem consists of delaying the test to an extent. This implementation has a trivial linear increment and a random factor for each attempt. For simplicity, this first thouch implementation only modifies spinning loops where the lock owner is running. spin mutexes and thread lock were not modified. Current parameters are autotuned on boot based on mp_cpus. Autotune factors are very conservative and are subject to change later. == locks: fix up ifdef guards introduced in r303643 Both sx and rwlocks had copy-pasted ADAPTIVE_MUTEXES instead of the correct define. == locks: fix compilation for KDTRACE_HOOKS && !ADAPTIVE_* case == locks: fix sx compilation on mips after r303643 The kernel.h header is required for the SYSINIT macro, which apparently was present on amd64 by accident. Approved by: re (gjb) 2016-08-09T18:56:29Z John Baldwin jhb@FreeBSD.org 2016-08-09T18:56:29Z urn:sha1:1c3a364ea302f2d8ce3a25a126acadc157fee0dd If a thread is created bound to a cpuset it might already be bound before its very first timeslice, and td_lastcpu will be NOCPU in that case. Approved by: re (gjb) 2016-08-08T21:19:57Z Bryan Drewery bdrewery@FreeBSD.org 2016-08-08T21:19:57Z urn:sha1:430c030f8ab2583b889b6fc4c8ffc0e6d6c0c4aa Approved by: re (gjb, implicit) 2016-08-08T21:18:28Z Bryan Drewery bdrewery@FreeBSD.org 2016-08-08T21:18:28Z urn:sha1:19f8e59ed0c2d7cdfe854290c97d46aae634ee0b Still provide freebsd10_* symbols from libc for COMPAT10. Approved by: re (gjb) 2016-08-08T20:23:11Z Bryan Drewery bdrewery@FreeBSD.org 2016-08-08T20:23:11Z urn:sha1:d89bbe5d4bdfde46a7eb17a17ff55f1fc0314446 Correct some comments. Approved by: re (kib) 2016-08-06T08:20:58Z Konstantin Belousov kib@FreeBSD.org 2016-08-06T08:20:58Z urn:sha1:b8d810f1c984bf7c6a1966bd9e95e09bd02e67cf Remove mention of Giant from the fork_return() description. Approved by: re (gjb) 2016-08-05T22:23:04Z John Baldwin jhb@FreeBSD.org 2016-08-05T22:23:04Z urn:sha1:d9b7b9d1f6a16d58efdf6dc76a3b6bdfb7ca9726 303406: Adjust tests in fsync job scheduling loop to reduce indentation. 303501: Fix locking issues with aio_fsync(). - Use correct lock in aio_cancel_sync when dequeueing job. - Add _locked variants of aio_set/clear_cancel_function and use those to avoid lock recursion when adding and removing fsync jobs to the per-process sync queue. - While here, add a basic test for aio_fsync(). PR: 211390 Approved by: re (kib)