6.11-stable review patch. If anyone has any objections, please let me know.
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From: Youssef Esmat youssefesmat@google.com
commit a741b82423f41501e301eb6f9820b45ca202e877 upstream.
In case the previous pick was a DL server pick, ->dl_server might be set. Clear it in the fast path as well.
Fixes: 63ba8422f876 ("sched/deadline: Introduce deadline servers") Signed-off-by: Youssef Esmat youssefesmat@google.com Signed-off-by: Daniel Bristot de Oliveira bristot@kernel.org Signed-off-by: Peter Zijlstra (Intel) peterz@infradead.org Tested-by: Juri Lelli juri.lelli@redhat.com Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/7f7381ccba09efcb4a1c1ff808ed58385eccc222.171681104... Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- kernel/sched/core.c | 7 +++++++ 1 file changed, 7 insertions(+)
--- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -5828,6 +5828,13 @@ __pick_next_task(struct rq *rq, struct t }
/* + * This is a normal CFS pick, but the previous could be a DL pick. + * Clear it as previous is no longer picked. + */ + if (prev->dl_server) + prev->dl_server = NULL; + + /* * This is the fast path; it cannot be a DL server pick; * therefore even if @p == @prev, ->dl_server must be NULL. */