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Tue, 14 Jan 2025 17:58:54 +0000 (UTC) Received: from vschneid-thinkpadt14sgen2i.remote.csb (unknown [10.39.192.55]) by mx-prod-int-02.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 8B17C195608A; Tue, 14 Jan 2025 17:58:29 +0000 (UTC) From: Valentin Schneider To: linux-kernel@vger.kernel.org, x86@kernel.org, virtualization@lists.linux.dev, linux-arm-kernel@lists.infradead.org, loongarch@lists.linux.dev, linux-riscv@lists.infradead.org, linux-perf-users@vger.kernel.org, xen-devel@lists.xenproject.org, kvm@vger.kernel.org, linux-arch@vger.kernel.org, rcu@vger.kernel.org, linux-hardening@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, bpf@vger.kernel.org, bcm-kernel-feedback-list@broadcom.com Cc: Josh Poimboeuf , Juergen Gross , Ajay Kaher , Alexey Makhalov , Russell King , Catalin Marinas , Will Deacon , Huacai Chen , WANG Xuerui , Paul Walmsley , Palmer Dabbelt , Albert Ou , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" , Peter Zijlstra , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , "Liang, Kan" , Boris Ostrovsky , Pawan Gupta , Sean Christopherson , Paolo Bonzini , Andy Lutomirski , Arnd Bergmann , Frederic Weisbecker , "Paul E. McKenney" , Jason Baron , Steven Rostedt , Ard Biesheuvel , Neeraj Upadhyay , Joel Fernandes , Josh Triplett , Boqun Feng , Uladzislau Rezki , Mathieu Desnoyers , Lai Jiangshan , Zqiang , Juri Lelli , Clark Williams , Yair Podemsky , Tomas Glozar , Vincent Guittot , Dietmar Eggemann , Ben Segall , Mel Gorman , Kees Cook , Andrew Morton , Christoph Hellwig , Shuah Khan , Sami Tolvanen , Miguel Ojeda , Alice Ryhl , "Mike Rapoport (Microsoft)" , Samuel Holland , Rong Xu , Nicolas Saenz Julienne , Geert Uytterhoeven , Yosry Ahmed , "Kirill A. Shutemov" , "Masami Hiramatsu (Google)" , Jinghao Jia , Luis Chamberlain , Randy Dunlap , Tiezhu Yang Subject: [PATCH v4 14/30] perf/x86/amd: Mark perf_lopwr_cb static call as __ro_after_init Date: Tue, 14 Jan 2025 18:51:27 +0100 Message-ID: <20250114175143.81438-15-vschneid@redhat.com> In-Reply-To: <20250114175143.81438-1-vschneid@redhat.com> References: <20250114175143.81438-1-vschneid@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.0 on 10.30.177.15 X-Rspamd-Server: rspam06 X-Rspamd-Queue-Id: D4A36140010 X-Rspam-User: X-Stat-Signature: 9hp99k9nx5u83mu9kjy4y51rxpg9ao3k X-HE-Tag: 1736877543-402964 X-HE-Meta: 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 r8hZSKpl TIRjMSoE8Lz123d0hxOBuQn13Q6AgwRG1IbSkbeGq7yfK6WWySEykJI8NaP9ayJr9WbtGq1MLsNo6h5NugyHLAnRgvCId83E3xVw3aF0TFFEpMm74D9QrfTgfoBfDfdN2xX7tw2IWHqrc858fmy9e4TLXlu5w3H1kSPDs/+5tRjiTq9ftoBH5cheP6bMu4jM5I16MfkPG8d8eOqqzINeaYgM7AYQxavimnEsAymV/1rqgAOfbVO6a3cmuiIxZ9RK6GoHPC+7FojQrFN0FqIs4KDg91oA0NM9DSn9GY0+VrRReBGsS3tUIzkhR8S7ardzevjiZ2BzioI+HeCOpt+Qz+3ilOjiXPG9a1/BWYW9R3tTWqS/ixK/SwDVdG20Nfw+i5XbeYkDxo71rxV0Yrz0jcY6K5j6zAUkpAKgkq5OaiIfqx3uhrP3fxlMmRIl/hmNx9JtJji2qXrz4S/YiEy5I7TibTv8Em9orIORj9dctpoB4+gA= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Later commits will cause objtool to warn about static calls being used in .noinstr sections in order to safely defer instruction patching IPIs targeted at NOHZ_FULL CPUs. perf_lopwr_cb is used in .noinstr code, but is only ever updated in __init amd_brs_lopwr_init(), and can thus be marked as __ro_after_init. Reported-by: Josh Poimboeuf Signed-off-by: Valentin Schneider --- arch/x86/events/amd/brs.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/arch/x86/events/amd/brs.c b/arch/x86/events/amd/brs.c index 780acd3dff22a..e2ff03af15d82 100644 --- a/arch/x86/events/amd/brs.c +++ b/arch/x86/events/amd/brs.c @@ -422,7 +422,7 @@ void noinstr perf_amd_brs_lopwr_cb(bool lopwr_in) } } -DEFINE_STATIC_CALL_NULL(perf_lopwr_cb, perf_amd_brs_lopwr_cb); +DEFINE_STATIC_CALL_NULL_RO(perf_lopwr_cb, perf_amd_brs_lopwr_cb); EXPORT_STATIC_CALL_TRAMP_GPL(perf_lopwr_cb); void __init amd_brs_lopwr_init(void)