[Bug 271727] login.conf(5), setusercontext(): Gap when setting a realtime-class priority

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=271727

--- Comment #1 from commit-hook@FreeBSD.org ---
A commit in branch main references this bug:

URL:
https://cgit.FreeBSD.org/src/commit/?id=bd572be78436473a2ad4c1b78728b739c74ef238

commit bd572be78436473a2ad4c1b78728b739c74ef238
Author:     Olivier Certner <olce.freebsd@certner.fr>
AuthorDate: 2023-05-25 07:10:27 +0000
Commit:     Ed Maste <emaste@FreeBSD.org>
CommitDate: 2023-10-02 20:38:03 +0000

    setusercontext(): Fix gap when setting a realtime-class priority

    The login.conf's "priority" capability allows to set priorities in the
    idle or realtime classes in addition to the classical nice values (-20
    to 20), through a natural extension where values greater than 20 put the
    processes in the idle class (with priority adjusted within RTP_PRIO_MIN
    and RTP_PRIO_MAX, 21 being converted to 0, 22 to 1, etc.) and values
    lower than -20 put the process in the realtime class (with priority
    adjusted within RTP_PRIO_MIN and RTP_PRIO_MAX, -21 being converted to
    RTP_PRIO_MAX (31), -22 to 30, etc.).

    Before this fix, in the latter case (realtime class), -21 was converted
    to 30, and RTP_PRIO_MAX (31) could never be specified.

    While here, change the priority computation for the idle-class case to
    be symmetrical and use RTP_PRIO_MIN (in practice, this changes nothing
    at all, since RTP_PRIO_MIN is 0; but this is the correct theoretical
    formula, which would work as well with other values of RTP_PRIO_MIN).

    PR:                     271727
    Reviewed by:            imp, kib
    MFC after:              2 weeks
    Sponsored by:           Kumacom SAS
    Differential Revision:  https://reviews.freebsd.org/D40339

 lib/libutil/login_class.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

-- 
You are receiving this mail because:
You are the assignee for the bug.