From: Suzuki K Poulose <suzuki.poulose@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org, mark.rutland@arm.com,
robh@kernel.org, will.deacon@arm.com, sudeep.holla@arm.com,
frowand.list@gmail.com, devicetree@vger.kernel.org,
Jonathan.Cameron@huawei.com, marc.zyngier@arm.com,
peterz@infradead.org, mathieu.poirier@linaro.org,
leo.yan@linaro.org, Suzuki K Poulose <suzuki.poulose@arm.com>
Subject: [PATCH v8 6/8] arm_pmu: Use of_cpu_node_to_id helper
Date: Tue, 10 Oct 2017 11:33:01 +0100 [thread overview]
Message-ID: <20171010103303.32436-7-suzuki.poulose@arm.com> (raw)
In-Reply-To: <20171010103303.32436-1-suzuki.poulose@arm.com>
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: Mark Rutland <mark.rutland@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
---
drivers/perf/arm_pmu_platform.c | 15 +++------------
1 file changed, 3 insertions(+), 12 deletions(-)
diff --git a/drivers/perf/arm_pmu_platform.c b/drivers/perf/arm_pmu_platform.c
index 4eafa7a42e52..a96884e37eaf 100644
--- a/drivers/perf/arm_pmu_platform.c
+++ b/drivers/perf/arm_pmu_platform.c
@@ -81,19 +81,10 @@ static int pmu_parse_irq_affinity(struct device_node *node, int i)
return -EINVAL;
}
- /* Now look up the logical CPU number */
- for_each_possible_cpu(cpu) {
- struct device_node *cpu_dn;
-
- cpu_dn = of_cpu_device_node_get(cpu);
- of_node_put(cpu_dn);
-
- if (dn == cpu_dn)
- break;
- }
-
- if (cpu >= nr_cpu_ids) {
+ cpu = of_cpu_node_to_id(dn);
+ if (cpu < 0) {
pr_warn("failed to find logical CPU for %s\n", dn->name);
+ cpu = nr_cpu_ids;
}
of_node_put(dn);
--
2.13.6
next prev parent reply other threads:[~2017-10-10 10:33 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-10 10:32 [PATCH v8 0/8] perf: Support for ARM DynamIQ Shared Unit Suzuki K Poulose
2017-10-10 10:32 ` [PATCH v8 1/8] perf: Export perf_event_update_userpage Suzuki K Poulose
2017-10-10 10:32 ` [PATCH v8 2/8] of: Add helper for mapping device node to logical CPU number Suzuki K Poulose
2017-10-10 10:32 ` [PATCH v8 3/8] coresight: of: Use of_cpu_node_to_id helper Suzuki K Poulose
2017-10-10 10:32 ` [PATCH v8 4/8] irqchip: gic-v3: " Suzuki K Poulose
2017-10-10 10:33 ` [PATCH v8 5/8] arm64: Use of_cpu_node_to_id helper for CPU topology parsing Suzuki K Poulose
2017-10-17 15:24 ` Mark Rutland
2017-10-17 16:11 ` Will Deacon
2017-10-17 16:20 ` Suzuki K Poulose
2017-10-17 16:42 ` Suzuki K Poulose
2017-10-10 10:33 ` Suzuki K Poulose [this message]
2017-10-17 15:26 ` [PATCH v8 6/8] arm_pmu: Use of_cpu_node_to_id helper Mark Rutland
2017-10-10 10:33 ` [PATCH v8 7/8] dt-bindings: Document devicetree binding for ARM DSU PMU Suzuki K Poulose
2017-10-18 9:20 ` Mark Rutland
2017-10-10 10:33 ` [PATCH v8 8/8] perf: ARM DynamIQ Shared Unit PMU support Suzuki K Poulose
2017-10-18 9:20 ` Mark Rutland
2017-10-20 10:17 ` Suzuki K Poulose
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