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/openbmc/linux/Documentation/devicetree/bindings/perf/
H A Dspe-pmu.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/perf/spe-pmu.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: ARMv8.2 Statistical Profiling Extension (SPE) Performance Monitor Units (PMU)
10 - Will Deacon <will@kernel.org>
13 ARMv8.2 introduces the optional Statistical Profiling Extension for collecting
14 performance sample data using an in-memory trace buffer.
18 const: arm,statistical-profiling-extension-v1
24 supported on a subset of the CPUs, please consult the arm,gic-v3 binding
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/openbmc/linux/drivers/perf/
H A Darm_spe_pmu.c1 // SPDX-License-Identifier: GPL-2.0-only
3 * Perf support for the Statistical Profiling Extension, introduced as
53 if (IS_ENABLED(CONFIG_PID_IN_CONTEXTIDR) && !perf_allow_kernel(&event->attr)) in set_spe_event_has_cx()
54 event->hw.flags |= SPE_PMU_HW_FLAGS_CX; in set_spe_event_has_cx()
59 return !!(event->hw.flags & SPE_PMU_HW_FLAGS_CX); in get_spe_event_has_cx()
98 /* Convert a free-running index from perf into an SPE buffer offset */
99 #define PERF_IDX2OFF(idx, buf) ((idx) % ((buf)->nr_pages << PAGE_SHIFT))
127 return !!(spe_pmu->features & arm_spe_pmu_feat_caps[cap]); in arm_spe_pmu_cap_get()
131 return spe_pmu->counter_sz; in arm_spe_pmu_cap_get()
133 return spe_pmu->min_period; in arm_spe_pmu_cap_get()
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/openbmc/linux/arch/arm64/boot/dts/arm/
H A Dfoundation-v8.dtsi1 // SPDX-License-Identifier: GPL-2.0
8 /dts-v1/;
10 #include <dt-bindings/interrupt-controller/arm-gic.h>
15 model = "Foundation-v8A";
16 compatible = "arm,foundation-aarch64", "arm,vexpress";
17 interrupt-parent = <&gic>;
18 #address-cells = <2>;
19 #size-cells = <2>;
31 #address-cells = <2>;
32 #size-cells = <0>;
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H A Dfvp-base-revc.dts1 // SPDX-License-Identifier: GPL-2.0
5 * Architecture Envelope Model (AEM) ARMv8-A
11 /dts-v1/;
13 #include <dt-bindings/interrupt-controller/arm-gic.h>
17 #include "rtsm_ve-motherboard.dtsi"
18 #include "rtsm_ve-motherboard-rs2.dtsi"
22 compatible = "arm,fvp-base-revc", "arm,vexpress";
23 interrupt-parent = <&gic>;
24 #address-cells = <2>;
25 #size-cells = <2>;
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/openbmc/linux/arch/arm64/include/asm/
H A Dsysreg.h1 /* SPDX-License-Identifier: GPL-2.0-only */
14 #include <linux/kasan-tags.h>
16 #include <asm/gpr-num.h>
22 * [20-19] : Op0
23 * [18-16] : Op1
24 * [15-12] : CRn
25 * [11-8] : CRm
26 * [7-5] : Op2
83 * As per Arm ARM for v8-A, Section "C.5.1.3 op0 == 0b00, architectural hints,
164 #include "asm/sysreg-defs.h"
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/openbmc/linux/tools/arch/arm64/include/asm/
H A Dsysreg.h1 /* SPDX-License-Identifier: GPL-2.0-only */
19 * [20-19] : Op0
20 * [18-16] : Op1
21 * [15-12] : CRn
22 * [11-8] : CRm
23 * [7-5] : Op2
80 * As per Arm ARM for v8-A, Section "C.5.1.3 op0 == 0b00, architectural hints,
239 /*** Statistical Profiling Extension ***/
336 /*** End of Statistical Profiling Extension ***/
487 * n: 0-15
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/openbmc/linux/Documentation/admin-guide/
H A Dkernel-parameters.txt5 force -- enable ACPI if default was off
6 on -- enable ACPI but allow fallback to DT [arm64,riscv64]
7 off -- disable ACPI if default was on
8 noirq -- do not use ACPI for IRQ routing
9 strict -- Be less tolerant of platforms that are not
11 rsdt -- prefer RSDT over (default) XSDT
12 copy_dsdt -- copy DSDT to memory
26 If set to vendor, prefer vendor-specific driver
58 Documentation/firmware-guide/acpi/debug.rst for more information about
116 Format: <byte> or <bitmap-list>
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