user/sven/linux.git/drivers/perf, branch v5.15.8

KVM: arm64: Fix PMU probe ordering

2021-09-20T11:43:34Z

Russell reported that since 5.13, KVM's probing of the PMU has started to fail on his HW. As it turns out, there is an implicit ordering dependency between the architectural PMU probing code and and KVM's own probing. If, due to probe ordering reasons, KVM probes before the PMU driver, it will fail to detect the PMU and prevent it from being advertised to guests as well as the VMM. Obviously, this is one probing too many, and we should be able to deal with any ordering. Add a callback from the PMU code into KVM to advertise the registration of a host CPU PMU, allowing for any probing order. Fixes: 5421db1be3b1 ("KVM: arm64: Divorce the perf code from oprofile helpers") Reported-by: "Russell King (Oracle)" Tested-by: Russell King (Oracle) Signed-off-by: Marc Zyngier Link: https://lore.kernel.org/r/YUYRKVflRtUytzy5@shell.armlinux.org.uk Cc: stable@vger.kernel.org

drivers/perf: fix the missed ida_simple_remove() in ddr_perf_probe()

2021-06-17T18:45:24Z

ddr_perf_probe() misses to call ida_simple_remove() in an error path. Jump to cpuhp_state_err to fix it. Signed-off-by: Jing Xiangfeng Reviewed-by: Dong Aisheng Link: https://lore.kernel.org/r/20210617122614.166823-1-jingxiangfeng@huawei.com Signed-off-by: Will Deacon

perf/arm-cmn: Fix invalid pointer when access dtc object sharing the same IRQ number

2021-06-17T18:45:02Z

When multiple dtcs share the same IRQ number, the irq_friend which used to refer to dtc object gets calculated incorrect which leads to invalid pointer. Fixes: 0ba64770a2f2 ("perf: Add Arm CMN-600 PMU driver") Signed-off-by: Tuan Phan Reviewed-by: Robin Murphy Link: https://lore.kernel.org/r/1623946129-3290-1-git-send-email-tuanphan@os.amperecomputing.com Signed-off-by: Will Deacon

drivers/perf: Simplify EVENT ATTR macro in fsl_imx8_ddr_perf.c

2021-06-11T10:18:40Z

Use common macro PMU_EVENT_ATTR_ID to simplify IMX8_DDR_PMU_EVENT_ATTR Reviewed by Frank Li Cc: Frank Li Cc: Will Deacon Cc: Mark Rutland Signed-off-by: Qi Liu Link: https://lore.kernel.org/r/1623220863-58233-7-git-send-email-liuqi115@huawei.com Signed-off-by: Will Deacon

drivers/perf: Simplify EVENT ATTR macro in xgene_pmu.c

2021-06-11T10:18:40Z

Use common macro PMU_EVENT_ATTR_ID to simplify XGENE_PMU_EVENT_ATTR Cc: Khuong Dinh Cc: Will Deacon Cc: Mark Rutland Signed-off-by: Qi Liu Link: https://lore.kernel.org/r/1623220863-58233-6-git-send-email-liuqi115@huawei.com Signed-off-by: Will Deacon

drivers/perf: Simplify EVENT ATTR macro in qcom_l3_pmu.c

2021-06-11T10:18:40Z

Use common macro PMU_EVENT_ATTR_ID to simplify L3CACHE_EVENT_ATTR Cc: Andy Gross Cc: Will Deacon Cc: Mark Rutland Signed-off-by: Qi Liu Link: https://lore.kernel.org/r/1623220863-58233-5-git-send-email-liuqi115@huawei.com Signed-off-by: Will Deacon

drivers/perf: Simplify EVENT ATTR macro in qcom_l2_pmu.c

2021-06-11T10:18:40Z

Use common macro PMU_EVENT_ATTR_ID to simplify L2CACHE_EVENT_ATTR Cc: Andy Gross Cc: Will Deacon Cc: Mark Rutland Signed-off-by: Qi Liu Link: https://lore.kernel.org/r/1623220863-58233-4-git-send-email-liuqi115@huawei.com Signed-off-by: Will Deacon

drivers/perf: Simplify EVENT ATTR macro in SMMU PMU driver

2021-06-11T10:18:40Z

Use common macro PMU_EVENT_ATTR_ID to simplify SMMU_EVENT_ATTR Cc: Will Deacon Cc: Mark Rutland Signed-off-by: Qi Liu Link: https://lore.kernel.org/r/1623220863-58233-3-git-send-email-liuqi115@huawei.com Signed-off-by: Will Deacon

perf/smmuv3: Don't trample existing events with global filter

2021-06-11T10:15:30Z

With global filtering, we only allow an event to be scheduled if its filter settings exactly match those of any existing events, therefore it is pointless to reapply the filter in that case. Much worse, though, is that in doing that we trample the event type of counter 0 if it's already active, and never touch the appropriate PMEVTYPERn so the new event is likely not counting the right thing either. Don't do that. CC: stable@vger.kernel.org Signed-off-by: Robin Murphy Link: https://lore.kernel.org/r/32c80c0e46237f49ad8da0c9f8864e13c4a803aa.1623153312.git.robin.murphy@arm.com Signed-off-by: Will Deacon

perf/hisi: Constify static attribute_group structs

2021-06-08T11:49:54Z

These are only put in an array of pointers to const attribute_group structs. Make them const like the other static attribute_group structs to allow the compiler to put them in read-only memory. Signed-off-by: Rikard Falkeborn Link: https://lore.kernel.org/r/20210605221514.73449-1-rikard.falkeborn@gmail.com Signed-off-by: Will Deacon