From: Suzuki K Poulose <suzuki.poulose@arm.com>
To: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org, marc.zyngier@arm.com,
mark.rutland@arm.com, will.deacon@arm.com,
catalin.marinas@arm.com, robh@kernel.org, sudeep.holla@arm.com,
peterz@infradead.org, mathieu.poirier@linaro.org,
leo.yan@linaro.org, frowand.list@gmail.com,
Jonathan.Cameron@huawei.com, devicetree@vger.kernel.org,
Suzuki K Poulose <suzuki.poulose@arm.com>
Subject: [PATCH v9 5/8] arm64: Use of_cpu_node_to_id helper for CPU topology parsing
Date: Tue, 31 Oct 2017 17:23:15 +0000 [thread overview]
Message-ID: <20171031172318.11823-6-suzuki.poulose@arm.com> (raw)
In-Reply-To: <20171031172318.11823-1-suzuki.poulose@arm.com>
Make use of the new generic helper to convert an of_node of a CPU
to the logical CPU id in parsing the topology.
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Will Deacon <will.deacon@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
---
arch/arm64/kernel/topology.c | 16 ++++++----------
1 file changed, 6 insertions(+), 10 deletions(-)
diff --git a/arch/arm64/kernel/topology.c b/arch/arm64/kernel/topology.c
index 8d48b233e6ce..21868530018e 100644
--- a/arch/arm64/kernel/topology.c
+++ b/arch/arm64/kernel/topology.c
@@ -37,18 +37,14 @@ static int __init get_cpu_for_node(struct device_node *node)
if (!cpu_node)
return -1;
- for_each_possible_cpu(cpu) {
- if (of_get_cpu_node(cpu, NULL) == cpu_node) {
- topology_parse_cpu_capacity(cpu_node, cpu);
- of_node_put(cpu_node);
- return cpu;
- }
- }
-
- pr_crit("Unable to find CPU node for %pOF\n", cpu_node);
+ cpu = of_cpu_node_to_id(cpu_node);
+ if (cpu >= 0)
+ topology_parse_cpu_capacity(cpu_node, cpu);
+ else
+ pr_crit("Unable to find CPU node for %pOF\n", cpu_node);
of_node_put(cpu_node);
- return -1;
+ return cpu;
}
static int __init parse_core(struct device_node *core, int cluster_id,
--
2.13.6
next prev parent reply other threads:[~2017-10-31 17:25 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-31 17:23 [PATCH v9 0/8] perf: Support for ARM DynamIQ Shared Unit Suzuki K Poulose
2017-10-31 17:23 ` [PATCH v9 1/8] perf: Export perf_event_update_userpage Suzuki K Poulose
2017-11-03 11:16 ` Mark Rutland
2017-10-31 17:23 ` [PATCH v9 2/8] of: Add helper for mapping device node to logical CPU number Suzuki K Poulose
2017-10-31 17:23 ` [PATCH v9 3/8] coresight: of: Use of_cpu_node_to_id helper Suzuki K Poulose
2017-10-31 17:23 ` [PATCH v9 4/8] irqchip: gic-v3: " Suzuki K Poulose
2017-10-31 17:23 ` Suzuki K Poulose [this message]
2017-10-31 17:23 ` [PATCH v9 6/8] arm_pmu: " Suzuki K Poulose
2017-10-31 17:23 ` [PATCH v9 7/8] dt-bindings: Document devicetree binding for ARM DSU PMU Suzuki K Poulose
2017-10-31 17:23 ` [PATCH v9 8/8] perf: ARM DynamIQ Shared Unit PMU support Suzuki K Poulose
2017-11-03 12:20 ` Mark Rutland
2017-11-03 14:34 ` Suzuki K Poulose
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