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proc: Add sysctl flag CTLFLAG_TUN to loader tunable

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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)
This commit is contained in:
Zhenlei Huang 2023-10-09 18:30:22 +08:00
parent 8c4eaac153
commit 964a91aac9
1 changed files with 2 additions and 1 deletions
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3
sys/kern/kern_proc.c
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@ -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,