Robin Murphy a428eb4b99 Partially revert "perf/arm-cmn: Optimise DTC counter accesses" ... It turns out the optimisation implemented by commit 4f2c3872dd is totally broken, since all the places that consume hw->dtcs_used for events other than cycle count are still not expecting it to be sparsely populated, and fail to read all the relevant DTC counters correctly if so. If implemented correctly, the optimisation potentially saves up to 3 register reads per event update, which is reasonably significant for events targeting a single node, but still not worth a massive amount of additional code complexity overall. Getting it right within the current design looks a fair bit more involved than it was ever intended to be, so let's just make a functional revert which restores the old behaviour while still backporting easily. Fixes: 4f2c3872dd ("perf/arm-cmn: Optimise DTC counter accesses") Reported-by: Ilkka Koskinen <ilkka@os.amperecomputing.com> Signed-off-by: Robin Murphy <robin.murphy@arm.com> Link: https://lore.kernel.org/r/b41bb4ed7283c3d8400ce5cf5e6ec94915e6750f.1674498637.git.robin.murphy@arm.com Signed-off-by: Will Deacon <will@kernel.org>		2023-01-26 13:55:38 +00:00
..
amlogic	perf/amlogic: Remove unused header inclusions of <linux/version.h>	2022-11-29 13:32:16 +00:00
arm_cspmu	perf: arm_cspmu: Fix module cyclic dependency	2022-11-18 13:32:11 +00:00
hisilicon	drivers/perf: hisi: Add TLP filter support	2022-11-29 14:30:55 +00:00
alibaba_uncore_drw_pmu.c
apple_m1_cpu_pmu.c
arm-cci.c
arm-ccn.c
arm-cmn.c	Partially revert "perf/arm-cmn: Optimise DTC counter accesses"	2023-01-26 13:55:38 +00:00
arm_dmc620_pmu.c	perf/arm_dmc620: Fix hotplug callback leak in dmc620_pmu_init()	2022-11-15 13:47:04 +00:00
arm_dsu_pmu.c	perf: arm_dsu: Fix hotplug callback leak in dsu_pmu_init()	2022-11-15 13:45:01 +00:00
arm_pmu.c	Perf events updates for v6.2:	2022-12-12 15:19:38 -08:00
arm_pmu_acpi.c	arm_pmu: acpi: handle allocation failure	2022-11-08 12:42:46 +00:00
arm_pmu_platform.c
arm_smmuv3_pmu.c	perf/smmuv3: Fix hotplug callback leak in arm_smmu_pmu_init()	2022-11-15 13:47:04 +00:00
arm_spe_pmu.c
fsl_imx8_ddr_perf.c
Kconfig	Updates for the interrupt core and driver subsystem:	2022-12-12 11:21:29 -08:00
Makefile	perf/amlogic: Add support for Amlogic meson G12 SoC DDR PMU driver	2022-11-21 18:28:45 +00:00
marvell_cn10k_ddr_pmu.c
marvell_cn10k_tad_pmu.c	drivers: perf: marvell_cn10k: Fix hotplug callback leak in tad_pmu_init()	2022-11-15 13:45:02 +00:00
qcom_l2_pmu.c
qcom_l3_pmu.c
riscv_pmu.c
riscv_pmu_legacy.c
riscv_pmu_sbi.c	drivers/perf: riscv_pmu_sbi: add support for PMU variant on T-Head C9xx cores	2022-10-27 14:35:20 -07:00
thunderx2_pmu.c
xgene_pmu.c