From: Valentin Schneider <vschneid@redhat.com>
To: linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
linux-arch@vger.kernel.org, x86@kernel.org
Cc: Josh Poimboeuf <jpoimboe@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Borislav Petkov <bp@alien8.de>,
Peter Zijlstra <peterz@infradead.org>,
Pawan Gupta <pawan.kumar.gupta@linux.intel.com>,
Ingo Molnar <mingo@redhat.com>,
Dave Hansen <dave.hansen@linux.intel.com>,
"H. Peter Anvin" <hpa@zytor.com>,
Paolo Bonzini <pbonzini@redhat.com>,
Wanpeng Li <wanpengli@tencent.com>,
Vitaly Kuznetsov <vkuznets@redhat.com>,
Arnd Bergmann <arnd@arndb.de>, Jason Baron <jbaron@akamai.com>,
Steven Rostedt <rostedt@goodmis.org>,
Ard Biesheuvel <ardb@kernel.org>,
Frederic Weisbecker <frederic@kernel.org>,
"Paul E. McKenney" <paulmck@kernel.org>,
Feng Tang <feng.tang@intel.com>,
Andrew Morton <akpm@linux-foundation.org>,
"Mike Rapoport (IBM)" <rppt@kernel.org>,
Vlastimil Babka <vbabka@suse.cz>,
David Hildenbrand <david@redhat.com>,
"ndesaulniers@google.com" <ndesaulniers@google.com>,
Michael Kelley <mikelley@microsoft.com>,
"Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Subject: [PATCH v3 4/4] x86/tsc: Make __use_tsc __ro_after_init
Date: Wed, 13 Mar 2024 19:01:06 +0100 [thread overview]
Message-ID: <20240313180106.2917308-5-vschneid@redhat.com> (raw)
In-Reply-To: <20240313180106.2917308-1-vschneid@redhat.com>
__use_tsc is only ever enabled in __init tsc_enable_sched_clock(), so mark
it as __ro_after_init.
Signed-off-by: Valentin Schneider <vschneid@redhat.com>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
---
arch/x86/kernel/tsc.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/x86/kernel/tsc.c b/arch/x86/kernel/tsc.c
index 5a69a49acc963..0f7624ed1d1d0 100644
--- a/arch/x86/kernel/tsc.c
+++ b/arch/x86/kernel/tsc.c
@@ -44,7 +44,7 @@ EXPORT_SYMBOL(tsc_khz);
static int __read_mostly tsc_unstable;
static unsigned int __initdata tsc_early_khz;
-static DEFINE_STATIC_KEY_FALSE(__use_tsc);
+static DEFINE_STATIC_KEY_FALSE_RO(__use_tsc);
int tsc_clocksource_reliable;
--
2.43.0
next prev parent reply other threads:[~2024-03-13 18:02 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-13 18:01 [PATCH v3 0/4] jump_label: Fix __ro_after_init keys for modules & annotate some keys Valentin Schneider
2024-03-13 18:01 ` [PATCH v3 1/4] jump_label,module: Don't alloc static_key_mod for __ro_after_init keys Valentin Schneider
2024-03-22 10:58 ` [tip: locking/core] " tip-bot2 for Peter Zijlstra
2024-03-13 18:01 ` [PATCH v3 2/4] context_tracking: Make context_tracking_key __ro_after_init Valentin Schneider
2024-03-22 10:58 ` [tip: locking/core] " tip-bot2 for Valentin Schneider
2024-03-13 18:01 ` [PATCH v3 3/4] x86/kvm: Make kvm_async_pf_enabled __ro_after_init Valentin Schneider
2024-03-22 10:58 ` [tip: locking/core] " tip-bot2 for Valentin Schneider
2024-03-13 18:01 ` Valentin Schneider [this message]
2024-03-22 10:58 ` [tip: locking/core] x86/tsc: Make __use_tsc __ro_after_init tip-bot2 for Valentin Schneider
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