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linux-yocto-rt/5.4: fix 5.4-stable caused build breakage

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5.4-stable included a backport of:

   Author: Eric W. Biederman <ebiederm@xmission.com>
   Date:   Thu Dec 3 14:11:13 2020 -0600

     rwsem: Implement down_read_interruptible

     [ Upstream commit 31784cff7ee073b34d6eddabb95e3be2880a425c ]

     In preparation for converting exec_update_mutex to a rwsem so that
     multiple readers can execute in parallel and not deadlock, add
     down_read_interruptible.  This is needed for perf_event_open to be
     converted (with no semantic changes) from working on a mutex to
     wroking on a rwsem.

     Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
     Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
     Link: https://lkml.kernel.org/r/87k0tybqfy.fsf@x220.int.ebiederm.org
     Signed-off-by: Sasha Levin <sashal@kernel.org>

We implement a -rt variant to fix the build issues.

(From OE-Core rev: 173f2350842325a731006681702419fa6c18801d)

Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit e610fb7cc22447441f18a9b1bffe58aadb6aaab6)
Signed-off-by: Anuj Mittal <anuj.mittal@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Bruce Ashfield
2021-02-02 22:24:02 -05:00
committed by Richard Purdie
parent 0e51506da3
commit f5287edae4
3 changed files with 4 additions and 4 deletions
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meta/recipes-kernel/linux/linux-yocto-tiny_5.4.bb
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@@ -17,7 +17,7 @@ KCONF_BSP_AUDIT_LEVEL = "2"
SRCREV_machine_qemuarm ?= "c65142e64f3d705d0b978b44394d274165d872b2"
SRCREV_machine ?= "d4bbfa0e2416ced1a3b4d05fa853e3171f034c57"
SRCREV_meta ?= "70cec8c033a6f5c48f0a93374f0bfc25240f14fd"
SRCREV_meta ?= "d676bf5ff7b7071e14f44498d2482c0a596f14cd"
PV = "${LINUX_VERSION}+git${SRCPV}"