(envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.17.1/8.17.1) with ESMTP id 44EDdQLf080545; Tue, 14 May 2024 13:39:26 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.17.1/8.17.1/Submit) id 44EDdQKj080542; Tue, 14 May 2024 13:39:26 GMT (envelope-from git) Date: Tue, 14 May 2024 13:39:26 GMT Message-Id: <202405141339.44EDdQKj080542@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Olivier Certner Subject: git: 81ddf56306ca - releng/14.1 - sched: Simplify sched_lend_user_prio_cond() List-Id: Commits to the stable branches of the FreeBSD src repository List-Archive: https://lists.freebsd.org/archives/dev-commits-src-branches List-Help: List-Post: List-Subscribe: List-Unsubscribe: X-BeenThere: dev-commits-src-branches@freebsd.org Sender: owner-dev-commits-src-branches@FreeBSD.org MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: olce X-Git-Repository: src X-Git-Refname: refs/heads/releng/14.1 X-Git-Reftype: branch X-Git-Commit: 81ddf56306ca46894baa376c4f58c4a52ce5809d Auto-Submitted: auto-generated The branch releng/14.1 has been updated by olce: URL: https://cgit.FreeBSD.org/src/commit/?id=81ddf56306ca46894baa376c4f58c4a52ce5809d commit 81ddf56306ca46894baa376c4f58c4a52ce5809d Author: Olivier Certner AuthorDate: 2024-02-09 18:03:22 +0000 Commit: Olivier Certner CommitDate: 2024-05-14 13:37:42 +0000 sched: Simplify sched_lend_user_prio_cond() If 'td_lend_user_pri' has the expected value, there is no need to check the fields that sched_lend_user_prio() modifies, they either are already good or soon will be ('td->td_lend_user_pri' has just been changed by a concurrent update). Reviewed by: kib Approved by: emaste (mentor) MFC after: 2 weeks Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D44050 (cherry picked from commit aeff15b392e68f5f193fff3bb01728b965cacc3a) Approved by: emaste (mentor) (cherry picked from commit b8b729e23cb91a77f3ca51df5100e2c85dfa7447) Approved by: emaste (mentor) Approved by: re (cperciva) --- sys/kern/sched_4bsd.c | 12 +++--------- sys/kern/sched_ule.c | 10 ++-------- 2 files changed, 5 insertions(+), 17 deletions(-) diff --git a/sys/kern/sched_4bsd.c b/sys/kern/sched_4bsd.c index f0fffeb08e2d..ff1e57746404 100644 --- a/sys/kern/sched_4bsd.c +++ b/sys/kern/sched_4bsd.c @@ -981,15 +981,9 @@ void sched_lend_user_prio_cond(struct thread *td, u_char prio) { - if (td->td_lend_user_pri != prio) - goto lend; - if (td->td_user_pri != min(prio, td->td_base_user_pri)) - goto lend; - if (td->td_priority != td->td_user_pri) - goto lend; - return; - -lend: + if (td->td_lend_user_pri == prio) + return; + thread_lock(td); sched_lend_user_prio(td, prio); thread_unlock(td); diff --git a/sys/kern/sched_ule.c b/sys/kern/sched_ule.c index ee1e0ab0b955..4b99f1c486bf 100644 --- a/sys/kern/sched_ule.c +++ b/sys/kern/sched_ule.c @@ -2007,15 +2007,9 @@ void sched_lend_user_prio_cond(struct thread *td, u_char prio) { - if (td->td_lend_user_pri != prio) - goto lend; - if (td->td_user_pri != min(prio, td->td_base_user_pri)) - goto lend; - if (td->td_priority != td->td_user_pri) - goto lend; - return; + if (td->td_lend_user_pri == prio) + return; -lend: thread_lock(td); sched_lend_user_prio(td, prio); thread_unlock(td);