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Message-Id: <20220621192034.3332546-14-sudeep.holla@arm.com>
Date: Tue, 21 Jun 2022 20:20:27 +0100
From: Sudeep Holla <sudeep.holla@....com>
To: linux-kernel@...r.kernel.org, Greg KH <gregkh@...uxfoundation.org>
Cc: Sudeep Holla <sudeep.holla@....com>,
Atish Patra <atishp@...shpatra.org>,
Atish Patra <atishp@...osinc.com>,
Vincent Guittot <vincent.guittot@...aro.org>,
Dietmar Eggemann <dietmar.eggemann@....com>,
Qing Wang <wangqing@...o.com>,
Rob Herring <robh+dt@...nel.org>,
"Rafael J . Wysocki" <rafael@...nel.org>,
Ionela Voinescu <ionela.voinescu@....com>,
Pierre Gondois <pierre.gondois@....com>,
linux-arm-kernel@...ts.infradead.org,
linux-riscv@...ts.infradead.org, Gavin Shan <gshan@...hat.com>,
Andy Shevchenko <andy.shevchenko@...il.com>
Subject: [PATCH v4 13/20] arch_topology: Check for non-negative value rather than -1 for IDs validity
Instead of just comparing the cpu topology IDs with -1 to check their
validity, improve that by checking for a valid non-negative value.
Reviewed-by: Gavin Shan <gshan@...hat.com>
Suggested-by: Andy Shevchenko <andy.shevchenko@...il.com>
Signed-off-by: Sudeep Holla <sudeep.holla@....com>
---
drivers/base/arch_topology.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c
index 7a5ff1ea5f00..ef90d9c00d9e 100644
--- a/drivers/base/arch_topology.c
+++ b/drivers/base/arch_topology.c
@@ -642,7 +642,7 @@ 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 == -1)
+ if (cpu_topology[cpu].package_id < 0)
ret = -EINVAL;
out_map:
@@ -714,7 +714,7 @@ void update_siblings_masks(unsigned int cpuid)
if (cpuid_topo->cluster_id != cpu_topo->cluster_id)
continue;
- if (cpuid_topo->cluster_id != -1) {
+ if (cpuid_topo->cluster_id >= 0) {
cpumask_set_cpu(cpu, &cpuid_topo->cluster_sibling);
cpumask_set_cpu(cpuid, &cpu_topo->cluster_sibling);
}
--
2.36.1
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