From: Valentin Schneider <vschneid@redhat.com>
To: linux-kernel@vger.kernel.org, linux-mm@kvack.org, x86@kernel.org
Cc: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, Borislav Petkov <bp@alien8.de>,
Dave Hansen <dave.hansen@linux.intel.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Andy Lutomirski <luto@kernel.org>,
Peter Zijlstra <peterz@infradead.org>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Josh Poimboeuf <jpoimboe@kernel.org>,
Paolo Bonzini <pbonzini@redhat.com>,
Arnd Bergmann <arnd@arndb.de>,
Frederic Weisbecker <frederic@kernel.org>,
"Paul E. McKenney" <paulmck@kernel.org>,
Jason Baron <jbaron@akamai.com>,
Steven Rostedt <rostedt@goodmis.org>,
Ard Biesheuvel <ardb@kernel.org>,
Sami Tolvanen <samitolvanen@google.com>,
"David S. Miller" <davem@davemloft.net>,
Neeraj Upadhyay <neeraj.upadhyay@kernel.org>,
Joel Fernandes <joelagnelf@nvidia.com>,
Josh Triplett <josh@joshtriplett.org>,
Boqun Feng <boqun.feng@gmail.com>,
Uladzislau Rezki <urezki@gmail.com>,
Mathieu Desnoyers <mathieu.desnoyers@efficios.com>,
Mel Gorman <mgorman@suse.de>,
Andrew Morton <akpm@linux-foundation.org>,
Masahiro Yamada <masahiroy@kernel.org>,
Han Shen <shenhan@google.com>, Rik van Riel <riel@surriel.com>,
Jann Horn <jannh@google.com>,
Dan Carpenter <dan.carpenter@linaro.org>,
Oleg Nesterov <oleg@redhat.com>,
Juri Lelli <juri.lelli@redhat.com>,
Clark Williams <williams@redhat.com>,
Tomas Glozar <tglozar@redhat.com>,
Yair Podemsky <ypodemsk@redhat.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
Daniel Wagner <dwagner@suse.de>, Petr Tesarik <ptesarik@suse.com>,
Shrikanth Hegde <sshegde@linux.ibm.com>
Subject: [RFC PATCH v8 05/10] sched/isolation: Mark housekeeping_overridden key as __ro_after_init
Date: Tue, 24 Mar 2026 10:47:56 +0100 [thread overview]
Message-ID: <20260324094801.3092968-6-vschneid@redhat.com> (raw)
In-Reply-To: <20260324094801.3092968-1-vschneid@redhat.com>
housekeeping_overridden is only ever enabled in the __init function
housekeeping_init(), and is never disabled. Mark it __ro_after_init.
Signed-off-by: Valentin Schneider <vschneid@redhat.com>
---
kernel/sched/isolation.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/kernel/sched/isolation.c b/kernel/sched/isolation.c
index 3ad0d6df6a0a2..54d1d93cdeea5 100644
--- a/kernel/sched/isolation.c
+++ b/kernel/sched/isolation.c
@@ -16,7 +16,7 @@ enum hk_flags {
HK_FLAG_KERNEL_NOISE = BIT(HK_TYPE_KERNEL_NOISE),
};
-DEFINE_STATIC_KEY_FALSE(housekeeping_overridden);
+DEFINE_STATIC_KEY_FALSE_RO(housekeeping_overridden);
EXPORT_SYMBOL_GPL(housekeeping_overridden);
struct housekeeping {
--
2.52.0
next prev parent reply other threads:[~2026-03-24 9:50 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-03-24 9:47 [RFC PATCH v8 00/10] context_tracking,x86: Defer some IPIs until a user->kernel transition Valentin Schneider
2026-03-24 9:47 ` [RFC PATCH v8 01/10] objtool: Make validate_call() recognize indirect calls to pv_ops[] Valentin Schneider
2026-03-24 9:47 ` [RFC PATCH v8 02/10] objtool: Flesh out warning related to pv_ops[] calls Valentin Schneider
2026-03-24 9:47 ` [RFC PATCH v8 03/10] objtool: Always pass a section to validate_unwind_hints() Valentin Schneider
2026-03-24 9:47 ` [RFC PATCH v8 04/10] x86/retpoline: Make warn_thunk_thunk .noinstr Valentin Schneider
2026-03-24 9:47 ` Valentin Schneider [this message]
2026-03-24 15:17 ` [RFC PATCH v8 05/10] sched/isolation: Mark housekeeping_overridden key as __ro_after_init Shrikanth Hegde
2026-03-24 19:46 ` Valentin Schneider
2026-03-24 9:47 ` [RFC PATCH v8 06/10] objtool: Add .entry.text validation for static branches Valentin Schneider
2026-03-24 9:47 ` [RFC PATCH v8 07/10] x86/jump_label: Add ASM support for static_branch_likely() Valentin Schneider
2026-03-24 9:47 ` [RFC PATCH v8 08/10] x86/mm/pti: Introduce a kernel/user CR3 software signal Valentin Schneider
2026-03-24 9:48 ` [RFC PATCH v8 09/10] context_tracking,x86: Defer kernel text patching IPIs when tracking CR3 switches Valentin Schneider
2026-03-24 9:48 ` [RFC PATCH v8 10/10] x86/mm, mm/vmalloc: Defer kernel TLB flush " Valentin Schneider
2026-03-24 15:01 ` [syzbot ci] Re: context_tracking,x86: Defer some IPIs until a user->kernel transition syzbot ci
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