Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 51cf6ee4 authored by Neil Leeder's avatar Neil Leeder Committed by Gerrit - the friendly Code Review server
Browse files

Perf: arm64: Use device tree property for CTI PMU workaround 



The CTI PMU workaround is enabled by default. Use a device tree property
to decide if the workaround needs to be applied or not.

Change-Id: Ie63fbbe24a58b8abd3f998f7858400189a74a32b
Signed-off-by: default avatarNeil Leeder <nleeder@codeaurora.org>
parent 84735e13

Documentation/devicetree/bindings/arm/msm/pmu.txt

+1 −0
Original line number Diff line number Diff line
@@ -14,6 +14,7 @@ Optional: 


- qcom,irq-is-percpu: 	Define this if the IRQ of the PMU is a PPI. This will tell perf to use

			the per_cpu IRQ API for request and free.

- qcom,apply-cti-pmu-wa: Indicates if the driver needs to apply the CTI PMU Workaround. Relevant for 8994V1.



Example:

arch/arm/boot/dts/qcom/msm8994-v1.dtsi

+7 −0
Original line number Diff line number Diff line
@@ -45,4 +45,11 @@ 
				  "sbe-irq";

		qcom,apply-cti-pmu-wa;

	};



	cpu-pmu {

		compatible = "arm,armv8-pmuv3";

		qcom,irq-is-percpu;

		interrupts = <1 14 0xff00>;

		qcom,apply-cti-pmu-wa;

	};

};

arch/arm/boot/dts/qcom/msm8994-v2.dtsi

+6 −0
Original line number Diff line number Diff line
@@ -48,6 +48,12 @@ 
				  "cci-irq",

				  "sbe-irq";

	};



	cpu-pmu {

		compatible = "arm,armv8-pmuv3";

		qcom,irq-is-percpu;

		interrupts = <1 7 0xff00>;

	};

};



/* GPU overrides */

arch/arm/boot/dts/qcom/msm8994.dtsi

+0 −6
Original line number Diff line number Diff line
@@ -2936,12 +2936,6 @@ 
					  <45 512 100000 200000>; /* 800 Mbps */

	};



	cpu-pmu {

		compatible = "arm,armv8-pmuv3";

		qcom,irq-is-percpu;

		interrupts = <1 14 0xff00>;

	};



	audio_heap {

		compatible = "qcom,msm-shared-memory";

		qcom,proc-id = <1>;

arch/arm64/kernel/perf_debug.c

+1 −0
Original line number Diff line number Diff line
@@ -30,6 +30,7 @@ static char *descriptions = 
	" 5 Perf: arm64: add perf user-mode permissions\n"

	" 6 Perf: arm64: Add debugfs node to clear PMU\n"

	" 7 Perf: arm64: Update PMU force reset\n"

	" 8 Perf: arm64: Use device tree property for CTI PMU workaround\n"

;



static ssize_t desc_read(struct file *fp, char __user *buf,