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Peter Anvin" , Andy Lutomirski , Peter Zijlstra , Arnaldo Carvalho de Melo , Paolo Bonzini , Arnd Bergmann , Frederic Weisbecker , "Paul E. McKenney" , Jason Baron , Steven Rostedt , Ard Biesheuvel , Sami Tolvanen , "David S. Miller" , Neeraj Upadhyay , Joel Fernandes , Josh Triplett , Boqun Feng , Uladzislau Rezki , Mathieu Desnoyers , Mel Gorman , Andrew Morton , Masahiro Yamada , Han Shen , Rik van Riel , Jann Horn , Dan Carpenter , Oleg Nesterov , Juri Lelli , Clark Williams , Yair Podemsky , Marcelo Tosatti , Daniel Wagner , Petr Tesarik Subject: [PATCH v6 14/29] perf/x86/amd: Mark perf_lopwr_cb static call as __ro_after_init Date: Fri, 10 Oct 2025 17:38:24 +0200 Message-ID: <20251010153839.151763-15-vschneid@redhat.com> In-Reply-To: <20251010153839.151763-1-vschneid@redhat.com> References: <20251010153839.151763-1-vschneid@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.111 X-Rspamd-Server: rspam01 X-Stat-Signature: 1badzmtieoeirt4ob3ikyfjuowxaac36 X-Rspam-User: X-Rspamd-Queue-Id: 902F2A000A X-HE-Tag: 1760111071-777615 X-HE-Meta: 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 R3LJ36tK 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 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 06f35a6b58a5b..71d7ba774a063 100644 --- a/arch/x86/events/amd/brs.c +++ b/arch/x86/events/amd/brs.c @@ -423,7 +423,7 @@ 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) -- 2.51.0