From a5bde5d8fde8a8cb28e59a672d5ddc5b9c1e7656 Mon Sep 17 00:00:00 2001 From: Breno Leitao Date: Wed, 5 Aug 2026 07:52:36 -0700 Subject: workqueue: skip the node_nr_active update for non-unbound workqueues apply_wqattrs_commit() updates node_nr_active->max unconditionally. wq->node_nr_active[] is only allocated for unbound workqueues, so guard the call before per-cpu workqueues start using this path. No functional change: only unbound workqueues reach apply_wqattrs_*() today. Signed-off-by: Breno Leitao Signed-off-by: Tejun Heo --- arch/s390/Kconfig.debug | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 arch/s390/Kconfig.debug (limited to 'arch/s390/Kconfig.debug') diff --git a/arch/s390/Kconfig.debug b/arch/s390/Kconfig.debug new file mode 100644 index 000000000..7955d7eee --- /dev/null +++ b/arch/s390/Kconfig.debug @@ -0,0 +1,32 @@ +# SPDX-License-Identifier: GPL-2.0 + +config EARLY_PRINTK + def_bool y + +config DEBUG_ENTRY + bool "Debug low-level entry code" + depends on DEBUG_KERNEL + help + This option enables sanity checks in s390 low-level entry code. + Some of these sanity checks may slow down kernel entries and + exits or otherwise impact performance. + + If unsure, say N. + +config STRICT_MM_TYPECHECKS + bool "Strict Memory Management Type Checks" + depends on DEBUG_KERNEL + help + Enable strict type checking for memory management types like pte_t + and pmd_t. This generates slightly worse code and should be used + for debug builds. + + If unsure, say N. + +config CIO_INJECT + bool "CIO Inject interfaces" + depends on DEBUG_KERNEL && DEBUG_FS + help + This option provides a debugging facility to inject certain artificial events + and instruction responses to the CIO layer of Linux kernel. The newly created + debugfs user-interfaces will be at /sys/kernel/debug/s390/cio/* -- cgit v1.3.1