From 964a91aac9c99d16294bc76d942de7bcc2a1b169 Mon Sep 17 00:00:00 2001 From: Zhenlei Huang Date: Mon, 9 Oct 2023 18:30:22 +0800 Subject: [PATCH] proc: Add sysctl flag CTLFLAG_TUN to loader tunable The sysctl variable 'kern.kstack_pages' is actually a loader tunable. Add sysctl flag CTLFLAG_TUN to it so that `sysctl -T` will report it correctly. No functional change intended. Note that on arm64 the thread0 stack size can not be controlled with it, kib@ suggested that arm64 maintainers can fix it eventually so let's enable it also on arm64 right now. Reviewed by: kib, imp MFC after: 3 days Differential Revision: https://reviews.freebsd.org/D42113 (cherry picked from commit 35b3be81f1d9fe38457d9137bef7a2875d24e2c8) --- sys/kern/kern_proc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/sys/kern/kern_proc.c b/sys/kern/kern_proc.c index cccce834e28..2daf39b398b 100644 --- a/sys/kern/kern_proc.c +++ b/sys/kern/kern_proc.c @@ -161,7 +161,8 @@ EVENTHANDLER_LIST_DEFINE(process_fork); EVENTHANDLER_LIST_DEFINE(process_exec); int kstack_pages = KSTACK_PAGES; -SYSCTL_INT(_kern, OID_AUTO, kstack_pages, CTLFLAG_RD, &kstack_pages, 0, +SYSCTL_INT(_kern, OID_AUTO, kstack_pages, CTLFLAG_RDTUN | CTLFLAG_NOFETCH, + &kstack_pages, 0, "Kernel stack size in pages"); static int vmmap_skip_res_cnt = 0; SYSCTL_INT(_kern, OID_AUTO, proc_vmmap_skip_resident_count, CTLFLAG_RW,