Date: Mon, 24 Aug 2020 12:44:20 +0000 From: bugzilla-noreply@freebsd.org To: emulation@FreeBSD.org Subject: [Bug 240043] audio/linux-c7-alsa: how to make it work? Message-ID: <bug-240043-4077-nqoRWNiNYj@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-240043-4077@https.bugs.freebsd.org/bugzilla/> References: <bug-240043-4077@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D240043 --- Comment #79 from commit-hook@FreeBSD.org --- A commit references this bug: Author: trasz Date: Mon Aug 24 12:43:55 UTC 2020 New revision: 364664 URL: https://svnweb.freebsd.org/changeset/base/364664 Log: MFC r358483 by tijl: linuxulator: Map scheduler priorities to Linux priorities. On Linux the valid range of priorities for the SCHED_FIFO and SCHED_RR scheduling policies is [1,99]. For SCHED_OTHER the single valid priority= is 0. On FreeBSD it is [0,31] for all policies. Programs are supposed to query the valid range using sched_get_priority_(min|max), but of course s= ome programs assume the Linux values are valid. This commit adds a tunable compat.linux.map_sched_prio. When enabled sched_get_priority_(min|max) return the Linux values and sched_setschedul= er and sched_(get|set)param translate between FreeBSD and Linux values. Because there are more Linux levels than FreeBSD levels, multiple Linux levels map to a single FreeBSD level, which means pre-emption might not happen as it does on Linux, so the tunable allows to disable this behavio= ur. It is enabled by default because I think it is unlikely that anyone runs real-time software under Linux emulation on FreeBSD that critically relies on correct pre-emption. This fixes FMOD, a commercial sound library used by several games. PR: 240043 Tested by: Alex S <iwtcex@gmail.com> Changes: _U stable/12/ stable/12/sys/compat/linux/linux_misc.c stable/12/sys/compat/linux/linux_misc.h --=20 You are receiving this mail because: You are the assignee for the bug. You are on the CC list for the bug.=
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