user/sven/linux.git/drivers/perf, branch v6.8.6

drivers/perf: hisi: Enable HiSilicon Erratum 162700402 quirk for HIP09

2024-04-13T11:10:07Z

[ Upstream commit e10b6976f6b9afdf3564f88c851e42d139bb19c0 ] HiSilicon UC PMU v2 suffers the erratum 162700402 that the PMU counter cannot be set due to the lack of clock under power saving mode. This will lead to error or inaccurate counts. The clock can be enabled by the PMU global enabling control. This patch tries to fix this by set the UC PMU enable before set event period to turn on the clock, and then restore the UC PMU configuration. The counter register can hold its value without a clock. Signed-off-by: Junhao He Reviewed-by: Yicong Yang Link: https://lore.kernel.org/r/20240227125231.53127-1-hejunhao3@huawei.com Signed-off-by: Will Deacon Signed-off-by: Sasha Levin

drivers/perf: riscv: Disable PERF_SAMPLE_BRANCH_* while not supported

2024-04-10T14:38:10Z

[ Upstream commit ea6873118493019474abbf57d5a800da365734df ] RISC-V perf driver does not yet support branch sampling. Although the specification is in the works [0], it is best to disable such events until support is available, otherwise we will get unexpected results. Due to this reason, two riscv bpf testcases get_branch_snapshot and perf_branches/perf_branches_hw fail. Link: https://github.com/riscv/riscv-control-transfer-records [0] Fixes: f5bfa23f576f ("RISC-V: Add a perf core library for pmu drivers") Signed-off-by: Pu Lehui Reviewed-by: Atish Patra Reviewed-by: Conor Dooley Link: https://lore.kernel.org/r/20240312012053.1178140-1-pulehui@huaweicloud.com Signed-off-by: Palmer Dabbelt Signed-off-by: Sasha Levin

Merge tag 'riscv-for-linus-6.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux

2024-03-01T20:44:33Z

Pull RISC-V fixes from Palmer Dabbelt: - detect ".option arch" support on not-yet-released LLVM builds - fix missing TLB flush when modifying non-leaf PTEs - fixes for T-Head custom extensions - fix for systems with the legacy PMU, that manifests as a crash on kernels built without SBI PMU support - fix for systems that clear *envcfg on suspend, which manifests as cbo.zero trapping after resume - fixes for Svnapot systems, including removing Svnapot support for huge vmalloc/vmap regions * tag 'riscv-for-linus-6.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: riscv: Sparse-Memory/vmemmap out-of-bounds fix riscv: Fix pte_leaf_size() for NAPOT Revert "riscv: mm: support Svnapot in huge vmap" riscv: Save/restore envcfg CSR during CPU suspend riscv: Add a custom ISA extension for the [ms]envcfg CSR riscv: Fix enabling cbo.zero when running in M-mode perf: RISCV: Fix panic on pmu overflow handler MAINTAINERS: Update SiFive driver maintainers drivers: perf: ctr_get_width function for legacy is not defined drivers: perf: added capabilities for legacy PMU RISC-V: Ignore V from the riscv,isa DT property on older T-Head CPUs riscv: Fix build error if !CONFIG_ARCH_ENABLE_HUGEPAGE_MIGRATION riscv: mm: fix NOCACHE_THEAD does not set bit[61] correctly riscv: add CALLER_ADDRx support RISC-V: Drop invalid test from CONFIG_AS_HAS_OPTION_ARCH kbuild: Add -Wa,--fatal-warnings to as-instr invocation riscv: tlb: fix __p*d_free_tlb()

perf: RISCV: Fix panic on pmu overflow handler

2024-02-29T18:20:00Z

(1 << idx) of int is not desired when setting bits in unsigned long overflowed_ctrs, use BIT() instead. This panic happens when running 'perf record -e branches' on sophgo sg2042. [ 273.311852] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000098 [ 273.320851] Oops [#1] [ 273.323179] Modules linked in: [ 273.326303] CPU: 0 PID: 1475 Comm: perf Not tainted 6.6.0-rc3+ #9 [ 273.332521] Hardware name: Sophgo Mango (DT) [ 273.336878] epc : riscv_pmu_ctr_get_width_mask+0x8/0x62 [ 273.342291] ra : pmu_sbi_ovf_handler+0x2e0/0x34e [ 273.347091] epc : ffffffff80aecd98 ra : ffffffff80aee056 sp : fffffff6e36928b0 [ 273.354454] gp : ffffffff821f82d0 tp : ffffffd90c353200 t0 : 0000002ade4f9978 [ 273.361815] t1 : 0000000000504d55 t2 : ffffffff8016cd8c s0 : fffffff6e3692a70 [ 273.369180] s1 : 0000000000000020 a0 : 0000000000000000 a1 : 00001a8e81800000 [ 273.376540] a2 : 0000003c00070198 a3 : 0000003c00db75a4 a4 : 0000000000000015 [ 273.383901] a5 : ffffffd7ff8804b0 a6 : 0000000000000015 a7 : 000000000000002a [ 273.391327] s2 : 000000000000ffff s3 : 0000000000000000 s4 : ffffffd7ff8803b0 [ 273.398773] s5 : 0000000000504d55 s6 : ffffffd905069800 s7 : ffffffff821fe210 [ 273.406139] s8 : 000000007fffffff s9 : ffffffd7ff8803b0 s10: ffffffd903f29098 [ 273.413660] s11: 0000000080000000 t3 : 0000000000000003 t4 : ffffffff8017a0ca [ 273.421022] t5 : ffffffff8023cfc2 t6 : ffffffd9040780e8 [ 273.426437] status: 0000000200000100 badaddr: 0000000000000098 cause: 000000000000000d [ 273.434512] [] riscv_pmu_ctr_get_width_mask+0x8/0x62 [ 273.441169] [] handle_percpu_devid_irq+0x98/0x1ee [ 273.447562] [] generic_handle_domain_irq+0x28/0x36 [ 273.454151] [] riscv_intc_irq+0x36/0x4e [ 273.459659] [] handle_riscv_irq+0x4a/0x74 [ 273.465442] [] do_irq+0x62/0x92 [ 273.470360] Code: 0420 60a2 6402 5529 0141 8082 0013 0000 0013 0000 (6d5c) b783 [ 273.477921] ---[ end trace 0000000000000000 ]--- [ 273.482630] Kernel panic - not syncing: Fatal exception in interrupt Reviewed-by: Alexandre Ghiti Reviewed-by: Atish Patra Signed-off-by: Fei Wu Link: https://lore.kernel.org/r/20240228115425.2613856-1-fei2.wu@intel.com Signed-off-by: Palmer Dabbelt

drivers: perf: ctr_get_width function for legacy is not defined

2024-02-27T20:55:36Z

With parameters CONFIG_RISCV_PMU_LEGACY=y and CONFIG_RISCV_PMU_SBI=n linux kernel crashes when you try perf record: $ perf record ls [ 46.749286] Unable to handle kernel NULL pointer dereference at virtual address 0000000000000000 [ 46.750199] Oops [#1] [ 46.750342] Modules linked in: [ 46.750608] CPU: 0 PID: 107 Comm: perf-exec Not tainted 6.6.0 #2 [ 46.750906] Hardware name: riscv-virtio,qemu (DT) [ 46.751184] epc : 0x0 [ 46.751430] ra : arch_perf_update_userpage+0x54/0x13e [ 46.751680] epc : 0000000000000000 ra : ffffffff8072ee52 sp : ff2000000022b8f0 [ 46.751958] gp : ffffffff81505988 tp : ff6000000290d400 t0 : ff2000000022b9c0 [ 46.752229] t1 : 0000000000000001 t2 : 0000000000000003 s0 : ff2000000022b930 [ 46.752451] s1 : ff600000028fb000 a0 : 0000000000000000 a1 : ff600000028fb000 [ 46.752673] a2 : 0000000ae2751268 a3 : 00000000004fb708 a4 : 0000000000000004 [ 46.752895] a5 : 0000000000000000 a6 : 000000000017ffe3 a7 : 00000000000000d2 [ 46.753117] s2 : ff600000028fb000 s3 : 0000000ae2751268 s4 : 0000000000000000 [ 46.753338] s5 : ffffffff8153e290 s6 : ff600000863b9000 s7 : ff60000002961078 [ 46.753562] s8 : ff60000002961048 s9 : ff60000002961058 s10: 0000000000000001 [ 46.753783] s11: 0000000000000018 t3 : ffffffffffffffff t4 : ffffffffffffffff [ 46.754005] t5 : ff6000000292270c t6 : ff2000000022bb30 [ 46.754179] status: 0000000200000100 badaddr: 0000000000000000 cause: 000000000000000c [ 46.754653] Code: Unable to access instruction at 0xffffffffffffffec. [ 46.754939] ---[ end trace 0000000000000000 ]--- [ 46.755131] note: perf-exec[107] exited with irqs disabled [ 46.755546] note: perf-exec[107] exited with preempt_count 4 This happens because in the legacy case the ctr_get_width function was not defined, but it is used in arch_perf_update_userpage. Also remove extra check in riscv_pmu_ctr_get_width_mask Signed-off-by: Vadim Shakirov Reviewed-by: Alexandre Ghiti Reviewed-by: Atish Patra Fixes: cc4c07c89aad ("drivers: perf: Implement perf event mmap support in the SBI backend") Link: https://lore.kernel.org/r/20240227170002.188671-3-vadim.shakirov@syntacore.com Signed-off-by: Palmer Dabbelt

drivers: perf: added capabilities for legacy PMU

2024-02-27T20:55:35Z

Added the PERF_PMU_CAP_NO_INTERRUPT flag because the legacy pmu driver does not provide sampling capabilities Added the PERF_PMU_CAP_NO_EXCLUDE flag because the legacy pmu driver does not provide the ability to disable counter incrementation in different privilege modes Suggested-by: Atish Patra Signed-off-by: Vadim Shakirov Reviewed-by: Atish Patra Fixes: 9b3e150e310e ("RISC-V: Add a simple platform driver for RISC-V legacy perf") Link: https://lore.kernel.org/r/20240227170002.188671-2-vadim.shakirov@syntacore.com Signed-off-by: Palmer Dabbelt

perf: CXL: fix CPMU filter value mask length

2024-02-20T12:04:07Z

CPMU filter value is described as 4B length in CXL r3.0 8.2.7.2.2. However, it is used as 2B length in code and comments. Reviewed-by: Jonathan Cameron Signed-off-by: Hojin Nam Link: https://lore.kernel.org/r/20240216014522.32321-1-hj96.nam@samsung.com Signed-off-by: Will Deacon

perf/arm-cmn: Workaround AmpereOneX errata AC04_MESH_1 (incorrect child count)

2024-02-09T17:14:04Z

AmpereOneX mesh implementation has a bug in HN-P nodes that makes them report incorrect child count. The failing crosspoints report 8 children while they only have two. When the driver tries to access the inexistent child nodes, it believes it has reached an invalid node type and probing fails. The workaround is to ignore those incorrect child nodes and continue normally. Signed-off-by: Ilkka Koskinen [ rm: rewrote simpler generalised version ] Tested-by: Ilkka Koskinen Signed-off-by: Robin Murphy Link: https://lore.kernel.org/r/ce4b1442135fe03d0de41859b04b268c88c854a3.1707498577.git.robin.murphy@arm.com Signed-off-by: Will Deacon

perf: CXL: fix mismatched cpmu event opcode

2024-02-09T16:52:33Z

S2M NDR BI-ConflictAck opcode is described as 4 in the CXL r3.0 3.3.9 Table 3.43. However, it is defined as 3 in macro definition. Fixes: 5d7107c72796 ("perf: CXL Performance Monitoring Unit driver") Signed-off-by: Hojin Nam Reviewed-by: Jonathan Cameron Link: https://lore.kernel.org/r/20240208013415epcms2p2904187c8a863f4d0d2adc980fb91a2dc@epcms2p2 Signed-off-by: Will Deacon

Merge tag 'acpi-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm

2024-01-10T00:12:44Z

Pull ACPI updates from Rafael Wysocki: "From the new features standpoint, the most significant change here is the addition of CSI-2 and MIPI DisCo for Imaging support to the ACPI device enumeration code that will allow MIPI cameras to be enumerated through the platform firmware on systems using ACPI. Also significant is the switch-over to threaded interrupt handlers for the ACPI SCI and the dedicated EC interrupt (on systems where the former is not used) which essentially allows all ACPI code to run with local interrupts enabled. That should improve responsiveness significantly on systems where multiple GPEs are enabled and the handling of one SCI involves many I/O address space accesses which previously had to be carried out in one go with disabled interrupts on the local CPU. Apart from the above, the ACPI thermal zone driver will use the Thermal fast Sampling Period (_TFP) object if available, which should allow temperature changes to be followed more accurately on some systems, the ACPI Notify () handlers can run on all CPUs (not just on CPU0), which should generally speed up the processing of events signaled through the ACPI SCI, and the ACPI power button driver will trigger wakeup key events via the input subsystem (on systems where it is a system wakeup device) In addition to that, there are the usual bunch of fixes and cleanups. Specifics: - Add CSI-2 and DisCo for Imaging support to the ACPI device enumeration code (Sakari Ailus, Rafael J. Wysocki) - Adjust the cpufreq thermal reduction algorithm in the ACPI processor driver for Tegra241 (Srikar Srimath Tirumala, Arnd Bergmann) - Make acpi_proc_quirk_mwait_check() x86-specific (Rafael J. Wysocki) - Switch over ACPI to using a threaded interrupt handler for the SCI (Rafael J. Wysocki) - Allow ACPI Notify () handlers to run on all CPUs and clean up the ACPI interface for deferred events processing (Rafael J. Wysocki) - Switch over the ACPI EC driver to using a threaded handler for the dedicated IRQ on systems without the EC GPE (Rafael J. Wysocki) - Adjust code using ACPICA spinlocks and the ACPI EC driver spinlock to keep local interrupts on (Rafael J. Wysocki) - Adjust the USB4 _OSC handshake to correctly handle cases in which certain types of OS control are denied by the platform (Mika Westerberg) - Correct and clean up the generic function for parsing ACPI data-only tables with array structure (Yuntao Wang) - Modify acpi_dev_uid_match() to support different types of its second argument and adjust its users accordingly (Raag Jadav) - Clean up code related to acpi_evaluate_reference() and ACPI device lists (Rafael J. Wysocki) - Use generic ACPI helpers for evaluating trip point temperature objects in the ACPI thermal zone driver (Rafael J. Wysockii, Arnd Bergmann) - Add Thermal fast Sampling Period (_TFP) support to the ACPI thermal zone driver (Jeff Brasen) - Modify the ACPI LPIT table handling code to avoid u32 multiplication overflows in state residency computations (Nikita Kiryushin) - Drop an unused helper function from the ACPI backlight (video) driver and add a clarifying comment to it (Hans de Goede) - Update the ACPI backlight driver to avoid using uninitialized memory in some cases (Nikita Kiryushin) - Add ACPI backlight quirk for the Colorful X15 AT 23 laptop (Yuluo Qiu) - Add support for vendor-defined error types to the ACPI APEI error injection code (Avadhut Naik) - Adjust APEI to properly set MF_ACTION_REQUIRED on synchronous memory failure events, so they are handled differently from the asynchronous ones (Shuai Xue) - Fix NULL pointer dereference check in the ACPI extlog driver (Prarit Bhargava) - Adjust the ACPI extlog driver to clear the Extended Error Log status when RAS_CEC handled the error (Tony Luck) - Add IRQ override quirks for some Infinity laptops and for TongFang GMxXGxx (David McFarland, Hans de Goede) - Clean up the ACPI NUMA code and fix it to ensure that fake_pxm is not the same as one of the real pxm values (Yuntao Wang) - Fix the fractional clock divider flags in the ACPI LPSS (Intel SoC) driver so as to prevent miscalculation of the values in the clock divider (Andy Shevchenko) - Adjust comments in the ACPI watchdog driver to prevent kernel-doc from complaining during documentation builds (Randy Dunlap) - Make the ACPI button driver send wakeup key events to user space in addition to power button events on systems that can be woken up by the power button (Ken Xue) - Adjust pnpacpi_parse_allocated_vendor() to use memcpy() on a full structure field (Dmitry Antipov)" * tag 'acpi-6.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (56 commits) ACPI: resource: Add Infinity laptops to irq1_edge_low_force_override ACPI: button: trigger wakeup key events ACPI: resource: Add another DMI match for the TongFang GMxXGxx ACPI: EC: Use a spin lock without disabing interrupts ACPI: EC: Use a threaded handler for dedicated IRQ ACPI: OSL: Use spin locks without disabling interrupts ACPI: APEI: set memory failure flags as MF_ACTION_REQUIRED on synchronous events ACPI: utils: Introduce helper for _DEP list lookup ACPI: utils: Fix white space in struct acpi_handle_list definition ACPI: utils: Refine acpi_handle_list_equal() slightly ACPI: utils: Return bool from acpi_evaluate_reference() ACPI: utils: Rearrange in acpi_evaluate_reference() ACPI: arm64: export acpi_arch_thermal_cpufreq_pctg() ACPI: extlog: Clear Extended Error Log status when RAS_CEC handled the error ACPI: LPSS: Fix the fractional clock divider flags ACPI: NUMA: Fix the logic of getting the fake_pxm value ACPI: NUMA: Optimize the check for the availability of node values ACPI: NUMA: Remove unnecessary check in acpi_parse_gi_affinity() ACPI: watchdog: fix kernel-doc warnings ACPI: extlog: fix NULL pointer dereference check ...