linux/drivers/perf, branch v5.0

drivers/perf: hisi: Fixup one DDRC PMU register offset

2019-01-04T10:13:27Z

For DDRC PMU, each PMU counter is fixed-purpose. There is a mismatch between perf list and driver definition on rw_chg event. # perf list | grep chg hisi_sccl1_ddrc0/rnk_chg/ [Kernel PMU event] hisi_sccl1_ddrc0/rw_chg/ [Kernel PMU event] But the register offset of rw_chg event is not defined in the driver, meanwhile bnk_chg register offset is mis-defined, let's fixup it. Fixes: 904dcf03f086 ("perf: hisi: Add support for HiSilicon SoC DDRC PMU driver") Cc: stable@vger.kernel.org Cc: John Garry Cc: Will Deacon Cc: Mark Rutland Reported-by: Weijian Huang Signed-off-by: Shaokun Zhang Signed-off-by: Will Deacon

drivers/perf: Add Cavium ThunderX2 SoC UNCORE PMU driver

2018-12-06T13:03:17Z

This patch adds a perf driver for the PMU UNCORE devices DDR4 Memory Controller(DMC) and Level 3 Cache(L3C). Each PMU supports up to 4 counters. All counters lack overflow interrupt and are sampled periodically. Reviewed-by: Suzuki K Poulose Signed-off-by: Ganapatrao Kulkarni [will: consistent enum cpuhp_state naming] Signed-off-by: Will Deacon

perf: arm_spe: handle devm_kasprintf() failure

2018-11-29T16:29:16Z

devm_kasprintf() may return NULL on failure of internal allocation thus the assignment to 'name' is not safe if unchecked. If NULL is passed in for name then perf_pmu_register() would not fail but rather silently jump to skip_type which is not the intent here. As perf_pmu_register() may also return -ENOMEM returning -ENOMEM in the (unlikely) failure case of devm_kasprintf() should be fine here as well. Acked-by: Mark Rutland Fixes: d5d9696b0380 ("drivers/perf: Add support for ARMv8.2 Statistical Profiling Extension") Signed-off-by: Nicholas Mc Guire [will: reworded error message] Signed-off-by: Will Deacon

drivers/perf: xgene: Add CPU hotplug support

2018-11-21T16:28:00Z

If the CPU assigned to the xgene PMU is taken offline, then subsequent perf invocations on the PMU will fail: # echo 0 > /sys/devices/system/cpu/cpu0/online # perf stat -a -e l3c0/cycle-count/,l3c0/write/ sleep 1 Error: The sys_perf_event_open() syscall returned with 19 (No such device) for event (l3c0/cycle-count/). /bin/dmesg may provide additional information. No CONFIG_PERF_EVENTS=y kernel support configured? This patch implements a hotplug notifier in the xgene PMU driver so that the PMU context is migrated to another online CPU should its assigned CPU disappear. Acked-by: Mark Rutland Signed-off-by: Hoan Tran [will: Made naming of new cpuhp_state enum entry consistent] Signed-off-by: Will Deacon

perf: arm_spe: Enable automatic DT loading

2018-11-21T13:16:34Z

When built as a module, the spe driver isn't automatically loaded on DT systems. Add the MODULE_DEVICE_TABLE entry. Reviewed-by: Sudeep Holla Signed-off-by: Jeremy Linton Signed-off-by: Will Deacon

Merge tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux

2018-10-22T16:30:06Z

Pull arm64 updates from Catalin Marinas: "Apart from some new arm64 features and clean-ups, this also contains the core mmu_gather changes for tracking the levels of the page table being cleared and a minor update to the generic compat_sys_sigaltstack() introducing COMPAT_SIGMINSKSZ. Summary: - Core mmu_gather changes which allow tracking the levels of page-table being cleared together with the arm64 low-level flushing routines - Support for the new ARMv8.5 PSTATE.SSBS bit which can be used to mitigate Spectre-v4 dynamically without trapping to EL3 firmware - Introduce COMPAT_SIGMINSTKSZ for use in compat_sys_sigaltstack - Optimise emulation of MRS instructions to ID_* registers on ARMv8.4 - Support for Common Not Private (CnP) translations allowing threads of the same CPU to share the TLB entries - Accelerated crc32 routines - Move swapper_pg_dir to the rodata section - Trap WFI instruction executed in user space - ARM erratum 1188874 workaround (arch_timer) - Miscellaneous fixes and clean-ups" * tag 'arm64-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux: (78 commits) arm64: KVM: Guests can skip __install_bp_hardening_cb()s HYP work arm64: cpufeature: Trap CTR_EL0 access only where it is necessary arm64: cpufeature: Fix handling of CTR_EL0.IDC field arm64: cpufeature: ctr: Fix cpu capability check for late CPUs Documentation/arm64: HugeTLB page implementation arm64: mm: Use __pa_symbol() for set_swapper_pgd() arm64: Add silicon-errata.txt entry for ARM erratum 1188873 Revert "arm64: uaccess: implement unsafe accessors" arm64: mm: Drop the unused cpu parameter MAINTAINERS: fix bad sdei paths arm64: mm: Use #ifdef for the __PAGETABLE_P?D_FOLDED defines arm64: Fix typo in a comment in arch/arm64/mm/kasan_init.c arm64: xen: Use existing helper to check interrupt status arm64: Use daifflag_restore after bp_hardening arm64: daifflags: Use irqflags functions for daifflags arm64: arch_timer: avoid unused function warning arm64: Trap WFI executed in userspace arm64: docs: Document SSBS HWCAP arm64: docs: Fix typos in ELF hwcaps arm64/kprobes: remove an extra semicolon in arch_prepare_kprobe ...

arm64: perf: Reject stand-alone CHAIN events for PMUv3

2018-10-12T14:25:17Z

It doesn't make sense for a perf event to be configured as a CHAIN event in isolation, so extend the arm_pmu structure with a ->filter_match() function to allow the backend PMU implementation to reject CHAIN events early. Cc: Reviewed-by: Suzuki K Poulose Signed-off-by: Will Deacon

perf: Convert to using %pOFn instead of device_node.name

2018-10-01T10:33:17Z

In preparation to remove the node name pointer from struct device_node, convert printf users to use the %pOFn format specifier. Cc: Mark Rutland Cc: linux-arm-kernel@lists.infradead.org Acked-by: Will Deacon Signed-off-by: Rob Herring Signed-off-by: Catalin Marinas

Merge tag 'char-misc-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc

2018-08-18T18:04:51Z

Pull char/misc driver updates from Greg KH: "Here is the bit set of char/misc drivers for 4.19-rc1 There is a lot here, much more than normal, seems like everyone is writing new driver subsystems these days... Anyway, major things here are: - new FSI driver subsystem, yet-another-powerpc low-level hardware bus - gnss, finally an in-kernel GPS subsystem to try to tame all of the crazy out-of-tree drivers that have been floating around for years, combined with some really hacky userspace implementations. This is only for GNSS receivers, but you have to start somewhere, and this is great to see. Other than that, there are new slimbus drivers, new coresight drivers, new fpga drivers, and loads of DT bindings for all of these and existing drivers. All of these have been in linux-next for a while with no reported issues" * tag 'char-misc-4.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc: (255 commits) android: binder: Rate-limit debug and userspace triggered err msgs fsi: sbefifo: Bump max command length fsi: scom: Fix NULL dereference misc: mic: SCIF Fix scif_get_new_port() error handling misc: cxl: changed asterisk position genwqe: card_base: Use true and false for boolean values misc: eeprom: assignment outside the if statement uio: potential double frees if __uio_register_device() fails eeprom: idt_89hpesx: clean up an error pointer vs NULL inconsistency misc: ti-st: Fix memory leak in the error path of probe() android: binder: Show extra_buffers_size in trace firmware: vpd: Fix section enabled flag on vpd_section_destroy platform: goldfish: Retire pdev_bus goldfish: Use dedicated macros instead of manual bit shifting goldfish: Add missing includes to goldfish.h mux: adgs1408: new driver for Analog Devices ADGS1408/1409 mux dt-bindings: mux: add adi,adgs1408 Drivers: hv: vmbus: Cleanup synic memory free path Drivers: hv: vmbus: Remove use of slow_virt_to_phys() Drivers: hv: vmbus: Reset the channel callback in vmbus_onoffer_rescind() ...

Merge branch 'for-next/perf' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux into aarch64/for-next/core

2018-07-27T13:39:04Z

Pull in arm perf updates, including support for 64-bit (chained) event counters and some non-critical fixes for some of the system PMU drivers. Signed-off-by: Will Deacon