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Wed, 01 Jul 2026 12:32:31 -0700 (PDT) Reply-To: Sean Christopherson Date: Wed, 1 Jul 2026 12:31:25 -0700 In-Reply-To: <20260701193212.749551-1-seanjc@google.com> Mime-Version: 1.0 References: <20260701193212.749551-1-seanjc@google.com> X-Mailer: git-send-email 2.55.0.rc0.799.gd6f94ed593-goog Message-ID: <20260701193212.749551-5-seanjc@google.com> Subject: [PATCH v5 04/51] x86/tsc: Restrict recalibrate_cpu_khz() export to p4-clockmod and powernow-k7 From: Sean Christopherson To: Jonathan Corbet , Paolo Bonzini , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, Kiryl Shutsemau , Rick Edgecombe , Sean Christopherson , "K. Y. Srinivasan" , Haiyang Zhang , Wei Liu , Dexuan Cui , Long Li , Ajay Kaher , Alexey Makhalov , Jan Kiszka , Andy Lutomirski , Peter Zijlstra , Juergen Gross , Daniel Lezcano , John Stultz Cc: Shuah Khan , "H. Peter Anvin" , Vitaly Kuznetsov , Broadcom internal kernel review list , Boris Ostrovsky , Stephen Boyd , linux-doc@vger.kernel.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-coco@lists.linux.dev, linux-hyperv@vger.kernel.org, virtualization@lists.linux.dev, xen-devel@lists.xenproject.org, Tom Lendacky , Nikunj A Dadhania , David Woodhouse , David Woodhouse , Michael Kelley , Thomas Gleixner X-purgate-ID: tlsNG-33051d/1782934353-B4D805D1-24BC8097/0/0 X-purgate-type: clean X-purgate-size: 837 X-ZohoMail-DKIM: pass (identity @google.com) X-ZM-MESSAGEID: 1782934386084158500 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Export recalibrate_cpu_khz() only for its two users, p4-clockmod.ko and powernow-k7.ko, to help document that recalibration is relevant only to ancient CPUs. For all intents and purposes, no functional change intended. Signed-off-by: Sean Christopherson --- 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 4393902c0ddd..482cc3a8999a 100644 --- a/arch/x86/kernel/tsc.c +++ b/arch/x86/kernel/tsc.c @@ -943,7 +943,7 @@ void recalibrate_cpu_khz(void) cpu_khz_old, cpu_khz); #endif } -EXPORT_SYMBOL_GPL(recalibrate_cpu_khz); +EXPORT_SYMBOL_FOR_MODULES(recalibrate_cpu_khz, "p4-clockmod,powernow-k7"); =20 =20 static unsigned long long cyc2ns_suspend; --=20 2.55.0.rc0.799.gd6f94ed593-goog