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([145.224.66.180]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4365d116d8fsm577295045e9.17.2025.01.06.06.25.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 06 Jan 2025 06:25:20 -0800 (PST) From: James Clark To: maz@kernel.org, kvmarm@lists.linux.dev, oliver.upton@linux.dev, suzuki.poulose@arm.com, coresight@lists.linaro.org Cc: James Clark , Joey Gouly , Zenghui Yu , Catalin Marinas , Will Deacon , Mike Leach , Alexander Shishkin , Mark Rutland , Shiqi Liu , James Morse , Mark Brown , Anshuman Khandual , "Rob Herring (Arm)" , Raghavendra Rao Ananta , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v9 4/7] coresight: trbe: Remove redundant disable call Date: Mon, 6 Jan 2025 14:24:39 +0000 Message-Id: <20250106142446.628923-5-james.clark@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250106142446.628923-1-james.clark@linaro.org> References: <20250106142446.628923-1-james.clark@linaro.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" trbe_drain_and_disable_local() just clears TRBLIMITR and drains. TRBLIMITR is already cleared on the next line after this call, so replace it with only drain. This is so we can make a kvm call that has a preempt enabled warning from set_trbe_disabled() in the next commit, where trbe_reset_local() is called from a preemptible hotplug path. Signed-off-by: James Clark --- drivers/hwtracing/coresight/coresight-trbe.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/hwtracing/coresight/coresight-trbe.c b/drivers/hwtraci= ng/coresight/coresight-trbe.c index 919804b12a67..03d3695ba5aa 100644 --- a/drivers/hwtracing/coresight/coresight-trbe.c +++ b/drivers/hwtracing/coresight/coresight-trbe.c @@ -253,8 +253,8 @@ static void trbe_drain_and_disable_local(struct trbe_cp= udata *cpudata) =20 static void trbe_reset_local(struct trbe_cpudata *cpudata) { - trbe_drain_and_disable_local(cpudata); write_sysreg_s(0, SYS_TRBLIMITR_EL1); + trbe_drain_buffer(); write_sysreg_s(0, SYS_TRBPTR_EL1); write_sysreg_s(0, SYS_TRBBASER_EL1); write_sysreg_s(0, SYS_TRBSR_EL1); --=20 2.34.1