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/csky/lib/delay.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 arch/csky/lib/delay.c (limited to 'arch/csky/lib/delay.c') diff --git a/arch/csky/lib/delay.c b/arch/csky/lib/delay.c new file mode 100644 index 000000000..f5db31731 --- /dev/null +++ b/arch/csky/lib/delay.c @@ -0,0 +1,39 @@ +// SPDX-License-Identifier: GPL-2.0 +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. +#include +#include +#include +#include + +void __aligned(8) __delay(unsigned long loops) +{ + asm volatile ( + "mov r0, r0\n" + "1:declt %0\n" + "bf 1b" + : "=r"(loops) + : "0"(loops)); +} +EXPORT_SYMBOL(__delay); + +void __const_udelay(unsigned long xloops) +{ + unsigned long long loops; + + loops = (unsigned long long)xloops * loops_per_jiffy * HZ; + + __delay(loops >> 32); +} +EXPORT_SYMBOL(__const_udelay); + +void __udelay(unsigned long usecs) +{ + __const_udelay(usecs * 0x10C7UL); /* 2**32 / 1000000 (rounded up) */ +} +EXPORT_SYMBOL(__udelay); + +void __ndelay(unsigned long nsecs) +{ + __const_udelay(nsecs * 0x5UL); /* 2**32 / 1000000000 (rounded up) */ +} +EXPORT_SYMBOL(__ndelay); -- cgit v1.3.1