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Fri, 15 May 2026 07:00:08 -0700 (PDT) From: "Vineeth Pillai (Google)" To: Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org Cc: linux-kernel@vger.kernel.org, Steven Rostedt , linux-trace-kernel@vger.kernel.org, Vineeth Pillai , Peter Zijlstra Subject: [PATCH v3 11/11] x86: msr: Use trace_call__##name() at guarded tracepoint call sites Date: Fri, 15 May 2026 10:00:04 -0400 Message-ID: <20260515140004.2238951-1-vineeth@bitbyteword.org> X-Mailer: git-send-email 2.54.0 Precedence: bulk X-Mailing-List: linux-trace-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Vineeth Pillai Replace trace_foo() with the new trace_call__foo() at sites already guarded by trace_foo_enabled(), avoiding a redundant static_branch_unlikely() re-evaluation inside the tracepoint. trace_call__foo() calls the tracepoint callbacks directly without utilizing the static branch again. Original v2 series: https://lore.kernel.org/linux-trace-kernel/20260323160052.17528-1-vineeth@bitbyteword.org/ Parts of the original v2 series have already been merged in mainline. This patch is being reposted as a follow-up cleanup for the remaining unmerged pieces. Suggested-by: Steven Rostedt Suggested-by: Peter Zijlstra Signed-off-by: Vineeth Pillai (Google) Assisted-by: Claude:claude-sonnet-4-6 --- arch/x86/lib/msr.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/arch/x86/lib/msr.c b/arch/x86/lib/msr.c index dfdd1da89f36..14785fe5e07b 100644 --- a/arch/x86/lib/msr.c +++ b/arch/x86/lib/msr.c @@ -125,21 +125,21 @@ EXPORT_SYMBOL_FOR_KVM(msr_clear_bit); #ifdef CONFIG_TRACEPOINTS void do_trace_write_msr(u32 msr, u64 val, int failed) { - trace_write_msr(msr, val, failed); + trace_call__write_msr(msr, val, failed); } EXPORT_SYMBOL(do_trace_write_msr); EXPORT_TRACEPOINT_SYMBOL(write_msr); void do_trace_read_msr(u32 msr, u64 val, int failed) { - trace_read_msr(msr, val, failed); + trace_call__read_msr(msr, val, failed); } EXPORT_SYMBOL(do_trace_read_msr); EXPORT_TRACEPOINT_SYMBOL(read_msr); void do_trace_rdpmc(u32 msr, u64 val, int failed) { - trace_rdpmc(msr, val, failed); + trace_call__rdpmc(msr, val, failed); } EXPORT_SYMBOL(do_trace_rdpmc); EXPORT_TRACEPOINT_SYMBOL(rdpmc); -- 2.54.0