Date: Sat, 2 Sep 2023 10:24:10 GMT From: Mateusz Guzik <mjg@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: f4296cfb409a - main - timerfd: convert timerfd_list_lock from sx to mtx Message-ID: <202309021024.382AOAYs014075@gitrepo.freebsd.org>
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The branch main has been updated by mjg: URL: https://cgit.FreeBSD.org/src/commit/?id=f4296cfb409a48de00bfa60e76f686c2b031876f commit f4296cfb409a48de00bfa60e76f686c2b031876f Author: Mateusz Guzik <mjg@FreeBSD.org> AuthorDate: 2023-09-02 09:55:50 +0000 Commit: Mateusz Guzik <mjg@FreeBSD.org> CommitDate: 2023-09-02 09:55:50 +0000 timerfd: convert timerfd_list_lock from sx to mtx There was no good reason to use the former. This should prevent some head-scratching by an interested and qualified reader. --- sys/kern/sys_timerfd.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/sys/kern/sys_timerfd.c b/sys/kern/sys_timerfd.c index c8b45a926b02..e4d2f10f28ef 100644 --- a/sys/kern/sys_timerfd.c +++ b/sys/kern/sys_timerfd.c @@ -61,9 +61,9 @@ static MALLOC_DEFINE(M_TIMERFD, "timerfd", "timerfd structures"); -static struct sx timerfd_list_lock; +static struct mtx timerfd_list_lock; static LIST_HEAD(, timerfd) timerfd_list; -SX_SYSINIT(timerfd, &timerfd_list_lock, "timerfd_list_lock"); +MTX_SYSINIT(timerfd, &timerfd_list_lock, "timerfd_list_lock", MTX_DEF); static struct unrhdr64 tfdino_unr; @@ -133,7 +133,7 @@ timerfd_jumped(void) return; timerfd_getboottime(&boottime); - sx_xlock(&timerfd_list_lock); + mtx_lock(&timerfd_list_lock); LIST_FOREACH(tfd, &timerfd_list, entry) { mtx_lock(&tfd->tfd_lock); if (tfd->tfd_clockid != CLOCK_REALTIME || @@ -169,7 +169,7 @@ timerfd_jumped(void) tfd->tfd_boottim = boottime; mtx_unlock(&tfd->tfd_lock); } - sx_xunlock(&timerfd_list_lock); + mtx_unlock(&timerfd_list_lock); } static int @@ -324,9 +324,9 @@ timerfd_close(struct file *fp, struct thread *td) { struct timerfd *tfd = fp->f_data; - sx_xlock(&timerfd_list_lock); + mtx_lock(&timerfd_list_lock); LIST_REMOVE(tfd, entry); - sx_xunlock(&timerfd_list_lock); + mtx_unlock(&timerfd_list_lock); callout_drain(&tfd->tfd_callout); seldrain(&tfd->tfd_sel); @@ -450,9 +450,9 @@ kern_timerfd_create(struct thread *td, int clockid, int flags) knlist_init_mtx(&tfd->tfd_sel.si_note, &tfd->tfd_lock); timerfd_getboottime(&tfd->tfd_boottim); getnanotime(&tfd->tfd_birthtim); - sx_xlock(&timerfd_list_lock); + mtx_lock(&timerfd_list_lock); LIST_INSERT_HEAD(&timerfd_list, tfd, entry); - sx_xunlock(&timerfd_list_lock); + mtx_unlock(&timerfd_list_lock); finit(fp, fflags, DTYPE_TIMERFD, tfd, &timerfdops);
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