sched/proxy: Yield the donor task

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commit 127b90315c upstream.

When executing a task in proxy context, handle yields as if they were
requested by the donor task. This matches the traditional PI semantics
of yield() as well.

This avoids scenario like proxy task yielding, pick next task selecting the
same previous blocked donor, running the proxy task again, etc.

Reported-by: kernel test robot <oliver.sang@intel.com>
Closes: https://lore.kernel.org/oe-lkp/202510211205.1e0f5223-lkp@intel.com
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Fernand Sieber <sieberf@amazon.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://patch.msgid.link/20251106104022.195157-1-sieberf@amazon.com
Cc: Holger Hoffstätte <holger@applied-asynchrony.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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This commit is contained in:

Fernand Sieber 2025-11-06 12:40:10 +02:00 • committed by Greg Kroah-Hartman

parent a607c8f744

commit 0522222f2a

5 changed files with 8 additions and 7 deletions

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2

kernel/sched/deadline.c

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4

kernel/sched/ext.c

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2

kernel/sched/fair.c

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kernel/sched/rt.c

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5

kernel/sched/syscalls.c

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