Author: ngie Date: Wed Jun 24 18:51:01 2020 New Revision: 362591 URL: https://svnweb.freebsd.org/changeset/base/362591
Log: Add `kern.features.witness` Adding `kern.features.witness` helps expose whether or not the kernel has `options WITNESS` enabled, so the `feature_present(3)` API can be used to query whether or not witness(9) is built into the kernel. This support is helpful with userspace applications (generally speaking, tests), as it can be queried to determine whether or not tests related to WITNESS should be run. MFC after: 1 week Reviewed by: cem, darrick.freebsd_gmail.com Differential Revision: https://reviews.freebsd.org/D25302 Sponsored by: DellEMC Isilon Modified: head/sys/kern/subr_witness.c Modified: head/sys/kern/subr_witness.c ============================================================================== --- head/sys/kern/subr_witness.c Wed Jun 24 18:40:43 2020 (r362590) +++ head/sys/kern/subr_witness.c Wed Jun 24 18:51:01 2020 (r362591) @@ -361,6 +361,8 @@ static int witness_output(const char *fmt, ...) __prin static int witness_voutput(const char *fmt, va_list ap) __printflike(1, 0); static void witness_setflag(struct lock_object *lock, int flag, int set); +FEATURE(witness, "kernel has witness(9) support"); + static SYSCTL_NODE(_debug, OID_AUTO, witness, CTLFLAG_RW | CTLFLAG_MPSAFE, NULL, "Witness Locking"); _______________________________________________ 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"
