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[61.228.240.171]) by smtp.gmail.com with ESMTPSA id k27sm3768323pgb.30.2020.05.16.05.50.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 16 May 2020 05:50:14 -0700 (PDT) From: Lecopzer Chen To: linux-kernel@vger.kernel.org Subject: [PATCH 3/3] arm64: Kconfig: Add support for the Perf NMI Date: Sat, 16 May 2020 20:48:57 +0800 Message-Id: <20200516124857.75004-4-lecopzer@gmail.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20200516124857.75004-1-lecopzer@gmail.com> References: <20200516124857.75004-1-lecopzer@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200516_055016_145227_DAA9CDC6 X-CRM114-Status: GOOD ( 10.27 ) X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2607:f8b0:4864:20:0:0:0:644 listed in] [list.dnswl.org] 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider [lecopzer[at]gmail.com] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, lecopzer.chen@mediatek.com, Lecopzer Chen , alexander.shishkin@linux.intel.com, catalin.marinas@arm.com, jolsa@redhat.com, acme@kernel.org, peterz@infradead.org, mingo@redhat.com, linux-mediatek@lists.infradead.org, matthias.bgg@gmail.com, namhyung@kernel.org, will@kernel.org, yj.chiang@mediatek.com, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org This is an extending function for Pseudo NMI that registering Perf events interrupts as NMI. It's helpful for sampling irq-off context when using perf. Signed-off-by: Lecopzer Chen --- arch/arm64/Kconfig | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 40fb05d96c60..f89c169771a0 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -1679,6 +1679,16 @@ config ARM64_PSEUDO_NMI If unsure, say N if ARM64_PSEUDO_NMI +config ARM64_PSEUDO_NMI_PERF + bool "Register Perf interrupts as Pseudo NMI" + depends on HW_PERF_EVENTS + depends on ARM_PMU + select HAVE_PERF_EVENTS_NMI + help + This registers Perf interrupts to NMI when Pseudo NMI is active. + This option is helpful when you need to debug any context disabled + irq and get more inforamtion. + + If unsure, say N + config ARM64_DEBUG_PRIORITY_MASKING bool "Debug interrupt priority masking" help