[PATCH v2 6/8] arch_topology: Avoid parsing through all the CPUs once a outlier CPU is found
From: Sudeep Holla <hidden>
Date: 2022-05-18 09:34:25
Also in:
linux-riscv, lkml
Subsystem:
driver core, kobjects, debugfs and sysfs, generic architecture topology, the rest · Maintainers:
Greg Kroah-Hartman, "Rafael J. Wysocki", Danilo Krummrich, Sudeep Holla, Linus Torvalds
There is no point in looping through all the CPU's physical package identifier to check if it is valid or not once a CPU which is outside the topology(i.e. outlier CPU) is found. Let us just break out of the loop early in such case. Signed-off-by: Sudeep Holla <redacted> --- drivers/base/arch_topology.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c
index be99a78f5b31..6d3346efe74b 100644
--- a/drivers/base/arch_topology.c
+++ b/drivers/base/arch_topology.c@@ -662,8 +662,10 @@ static int __init parse_dt_topology(void) * only mark cores described in the DT as possible. */ for_each_possible_cpu(cpu) - if (cpu_topology[cpu].package_id < 0) + if (cpu_topology[cpu].package_id < 0) { ret = -EINVAL; + break; + } out_map: of_node_put(map);
--
2.36.1
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