kernel.git/drivers/perf/arm_pmu_platform.c, branch linux-5.10.y

perf/arm_pmu_platform: fix tests for platform_get_irq() failure

2022-09-20T10:38:32Z

[ Upstream commit 6bb0d64c100091e131cd16710b62fda3319cd0af ] The platform_get_irq() returns negative error codes. It can't actually return zero. Signed-off-by: Yu Zhe Link: https://lore.kernel.org/r/20220825011844.8536-1-yuzhe@nfschina.com Signed-off-by: Will Deacon Signed-off-by: Sasha Levin

perf/arm_pmu_platform: Fix error handling

2021-05-11T12:47:19Z

[ Upstream commit e338cb6bef254821a8c095018fd27254d74bfd6a ] If we're aborting after failing to register the PMU device, we probably don't want to leak the IRQs that we've claimed. Signed-off-by: Robin Murphy Link: https://lore.kernel.org/r/53031a607fc8412a60024bfb3bb8cd7141f998f5.1616774562.git.robin.murphy@arm.com Signed-off-by: Will Deacon Signed-off-by: Sasha Levin

perf/arm_pmu_platform: Use dev_err_probe() for IRQ errors

2021-05-11T12:47:19Z

[ Upstream commit 11fa1dc8020a2a9e0c59998920092d4df3fb7308 ] By virtue of using platform_irq_get_optional() under the covers, platform_irq_count() needs the target interrupt controller to be available and may return -EPROBE_DEFER if it isn't. Let's use dev_err_probe() to avoid a spurious error log (and help debug any deferral issues) in that case. Reported-by: Paul Menzel Signed-off-by: Robin Murphy Link: https://lore.kernel.org/r/073d5e0d3ed1f040592cb47ca6fe3759f40cc7d1.1616774562.git.robin.murphy@arm.com Signed-off-by: Will Deacon Signed-off-by: Sasha Levin

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

drivers/perf: Initialise return value in armpmu_request_irqs()

2018-07-04T10:50:50Z

If a PMU doesn't have any IRQs, we should return 0 from armpmu_request_irqs(), rather than uninitialised stack. Signed-off-by: Will Deacon

drivers/perf: arm_pmu_platform: do not warn about affinity on uniprocessor

2018-03-27T12:13:27Z

If there is exactly one CPU present, there is no ambiguity: do not warn that PMU setup would need to guess IRQ affinity. Cc: Mark Rutland Cc: Will Deacon Signed-off-by: Alexander Monakov Signed-off-by: Will Deacon

arm_pmu: acpi: request IRQs up-front

2018-02-20T11:34:54Z

We can't request IRQs in atomic context, so for ACPI systems we'll have to request them up-front, and later associate them with CPUs. This patch reorganises the arm_pmu code to do so. As we no longer have the arm_pmu structure at probe time, a number of prototypes need to be adjusted, requiring changes to the common arm_pmu code and arm_pmu platform code. Signed-off-by: Mark Rutland Cc: Will Deacon Signed-off-by: Will Deacon

arm_pmu: acpi: check for mismatched PPIs

2018-02-20T11:34:54Z

The arm_pmu platform code explicitly checks for mismatched PPIs at probe time, while the ACPI code leaves this to the core code. Future refactoring will make this difficult for the core code to check, so let's have the ACPI code check this explicitly. As before, upon a failure we'll continue on without an interrupt. Ho hum. Signed-off-by: Mark Rutland Cc: Will Deacon Signed-off-by: Will Deacon

arm_pmu: fold platform helpers into platform code

2018-02-20T11:34:53Z

The armpmu_{request,free}_irqs() helpers are only used by arm_pmu_platform.c, so let's fold them in and make them static. Signed-off-by: Mark Rutland Cc: Will Deacon Signed-off-by: Will Deacon

arm_pmu: Use of_cpu_node_to_id helper

2018-01-02T16:43:12Z

Use the new generic helper, of_cpu_node_to_id(), to map a a phandle to the logical CPU number while parsing the PMU irq affinity. Cc: Will Deacon Acked-by: Mark Rutland Signed-off-by: Suzuki K Poulose Signed-off-by: Will Deacon