Author: mjg Date: Sun Mar 8 00:22:32 2020 New Revision: 358733 URL: https://svnweb.freebsd.org/changeset/base/358733
Log: seqc: tidy up - avoid hand-rolled read - match begin/end in terms of fence style Modified: head/sys/sys/seqc.h Modified: head/sys/sys/seqc.h ============================================================================== --- head/sys/sys/seqc.h Sat Mar 7 15:37:23 2020 (r358732) +++ head/sys/sys/seqc.h Sun Mar 8 00:22:32 2020 (r358733) @@ -66,7 +66,8 @@ static __inline void seqc_write_end(seqc_t *seqcp) { - atomic_store_rel_int(seqcp, *seqcp + 1); + atomic_thread_fence_rel(); + *seqcp += 1; MPASS(!seqc_in_modify(*seqcp)); critical_exit(); } @@ -84,7 +85,7 @@ seqc_read(const seqc_t *seqcp) seqc_t ret; for (;;) { - ret = atomic_load_acq_int(__DECONST(seqc_t *, seqcp)); + ret = seqc_read_any(seqcp); if (__predict_false(seqc_in_modify(ret))) { cpu_spinwait(); continue; _______________________________________________ svn-src-head@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "svn-src-head-unsubscr...@freebsd.org"