Robin Murphy 85045e51c7 perf/arm-cmn: Fail DTC counter allocation correctly ...

commit 1892fe103c upstream.

Calling arm_cmn_event_clear() before all DTC indices are allocated is
wrong, and can lead to arm_cmn_event_add() erroneously clearing live
counters from full DTCs where allocation fails. Since the DTC counters
are only updated by arm_cmn_init_counter() after all DTC and DTM
allocations succeed, nothing actually needs cleaning up in this case
anyway, and it should just return directly as it did before.

Fixes: 7633ec2c26 ("perf/arm-cmn: Rework DTC counters (again)")
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Ilkka Koskinen <ilkka@os.amperecomputing.com>
Acked-by: Will Deacon <will@kernel.org>
Link: https://lore.kernel.org/r/ed589c0d8e4130dc68b8ad1625226d28bdc185d4.1702322847.git.robin.murphy@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2024-10-17 15:21:28 +02:00

..

hisilicon

drivers/perf: hisi_pcie: Record hardware counts correctly

2024-10-17 15:20:38 +02:00

alibaba_uncore_drw_pmu.c

drivers/perf: Fix ali_drw_pmu driver interrupt status clearing

2024-10-17 15:20:38 +02:00

apple_m1_cpu_pmu.c

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arm_dmc620_pmu.c

perf/arm-dmc620: Fix lockdep assert in ->event_init()

2024-06-12 11:03:49 +02:00

arm_dsu_pmu.c

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arm_pmu_acpi.c

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arm_pmu_platform.c

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arm_pmu.c

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arm_smmuv3_pmu.c

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arm_spe_pmu.c

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arm-cci.c

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arm-ccn.c

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arm-cmn.c

perf/arm-cmn: Fail DTC counter allocation correctly

2024-10-17 15:21:28 +02:00

fsl_imx8_ddr_perf.c

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Kconfig

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Makefile

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marvell_cn10k_ddr_pmu.c

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marvell_cn10k_tad_pmu.c

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qcom_l2_pmu.c

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qcom_l3_pmu.c

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riscv_pmu_legacy.c

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riscv_pmu_sbi.c

drivers/perf: riscv: Reset the counter to hpmevent mapping while starting cpus

2024-07-25 09:49:18 +02:00

riscv_pmu.c

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thunderx2_pmu.c

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xgene_pmu.c

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