Date: Tue, 7 Mar 2023 16:55:40 GMT From: Mitchell Horne <mhorne@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org Subject: git: 7b37e83e4c8f - stable/13 - lockmgr: upgrade panic return checks Message-ID: <202303071655.327Gte0u022871@gitrepo.freebsd.org>
next in thread | raw e-mail | index | archive | help
The branch stable/13 has been updated by mhorne: URL: https://cgit.FreeBSD.org/src/commit/?id=7b37e83e4c8f4e76301834346b2870ef79880d5e commit 7b37e83e4c8f4e76301834346b2870ef79880d5e Author: Mitchell Horne <mhorne@FreeBSD.org> AuthorDate: 2023-02-22 15:11:15 +0000 Commit: Mitchell Horne <mhorne@FreeBSD.org> CommitDate: 2023-03-07 15:58:28 +0000 lockmgr: upgrade panic return checks We short-circuit lockmgr functions in the face of a kernel panic. Other lock implementations do this with a SCHEDULER_STOPPED() check, which covers the additional case where the debugger is active but the system has not panicked. Update this code to match that behaviour. Reviewed by: mjg, kib, markj MFC after: 1 week Differential Revision: https://reviews.freebsd.org/D38655 (cherry picked from commit 9a7f7c26c5b280924072e2d9947ad39ef4cc022c) --- sys/kern/kern_lock.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/sys/kern/kern_lock.c b/sys/kern/kern_lock.c index e90c55947676..d9713ec06473 100644 --- a/sys/kern/kern_lock.c +++ b/sys/kern/kern_lock.c @@ -595,7 +595,7 @@ lockmgr_slock_hard(struct lock *lk, u_int flags, struct lock_object *ilk, #endif struct lock_delay_arg lda; - if (KERNEL_PANICKED()) + if (SCHEDULER_STOPPED()) goto out; tid = (uintptr_t)curthread; @@ -781,7 +781,7 @@ lockmgr_xlock_hard(struct lock *lk, u_int flags, struct lock_object *ilk, #endif struct lock_delay_arg lda; - if (KERNEL_PANICKED()) + if (SCHEDULER_STOPPED()) goto out; tid = (uintptr_t)curthread; @@ -977,7 +977,7 @@ lockmgr_upgrade(struct lock *lk, u_int flags, struct lock_object *ilk, int error = 0; int op; - if (KERNEL_PANICKED()) + if (SCHEDULER_STOPPED()) goto out; tid = (uintptr_t)curthread; @@ -1038,7 +1038,7 @@ lockmgr_lock_flags(struct lock *lk, u_int flags, struct lock_object *ilk, u_int op; bool locked; - if (KERNEL_PANICKED()) + if (SCHEDULER_STOPPED()) return (0); op = flags & LK_TYPE_MASK; @@ -1101,7 +1101,7 @@ lockmgr_sunlock_hard(struct lock *lk, uintptr_t x, u_int flags, struct lock_obje { int wakeup_swapper = 0; - if (KERNEL_PANICKED()) + if (SCHEDULER_STOPPED()) goto out; wakeup_swapper = wakeupshlk(lk, file, line); @@ -1120,7 +1120,7 @@ lockmgr_xunlock_hard(struct lock *lk, uintptr_t x, u_int flags, struct lock_obje u_int realexslp; int queue; - if (KERNEL_PANICKED()) + if (SCHEDULER_STOPPED()) goto out; tid = (uintptr_t)curthread; @@ -1312,7 +1312,7 @@ __lockmgr_args(struct lock *lk, u_int flags, struct lock_object *ilk, int contested = 0; #endif - if (KERNEL_PANICKED()) + if (SCHEDULER_STOPPED()) return (0); error = 0; @@ -1721,7 +1721,7 @@ _lockmgr_assert(const struct lock *lk, int what, const char *file, int line) { int slocked = 0; - if (KERNEL_PANICKED()) + if (SCHEDULER_STOPPED()) return; switch (what) { case KA_SLOCKED:
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?202303071655.327Gte0u022871>