From: Thomas Weißschuh Date: Thu, 26 Jun 2025 09:23:44 +0000 (+0200) Subject: sched: Fix preemption string of preempt_dynamic_none X-Git-Tag: v6.16-rc5~2^2~2 X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=3ebb1b6522392f64902b4e96954e35927354aa27;p=thirdparty%2Fkernel%2Flinux.git sched: Fix preemption string of preempt_dynamic_none Zero is a valid value for "preempt_dynamic_mode", namely "preempt_dynamic_none". Fix the off-by-one in preempt_model_str(), so that "preempty_dynamic_none" is correctly formatted as PREEMPT(none) instead of PREEMPT(undef). Fixes: 8bdc5daaa01e ("sched: Add a generic function to return the preemption string") Signed-off-by: Thomas Weißschuh Signed-off-by: Peter Zijlstra (Intel) Reviewed-by: Sebastian Andrzej Siewior Tested-by: Shrikanth Hegde Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/20250626-preempt-str-none-v2-1-526213b70a89@linutronix.de --- diff --git a/kernel/sched/core.c b/kernel/sched/core.c index 8988d38d46a38..cd80b66a960a0 100644 --- a/kernel/sched/core.c +++ b/kernel/sched/core.c @@ -7663,7 +7663,7 @@ const char *preempt_model_str(void) if (IS_ENABLED(CONFIG_PREEMPT_DYNAMIC)) { seq_buf_printf(&s, "(%s)%s", - preempt_dynamic_mode > 0 ? + preempt_dynamic_mode >= 0 ? preempt_modes[preempt_dynamic_mode] : "undef", brace ? "}" : ""); return seq_buf_str(&s);