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From: Sudeep Holla <sudeep.holla@arm.com>
To: linux-kernel@vger.kernel.org
Cc: Sudeep Holla <sudeep.holla@arm.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Atish Patra <atishp@atishpatra.org>,
	Atish Patra <atishp@rivosinc.com>,
	Vincent Guittot <vincent.guittot@linaro.org>,
	Dietmar Eggemann <dietmar.eggemann@arm.com>,
	Qing Wang <wangqing@vivo.com>, Rob Herring <robh+dt@kernel.org>,
	"Rafael J . Wysocki" <rafael@kernel.org>,
	Ionela Voinescu <ionela.voinescu@arm.com>,
	Pierre Gondois <pierre.gondois@arm.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-riscv@lists.infradead.org,
	Andy Shevchenko <andy.shevchenko@gmail.com>,
	Gavin Shan <gshan@redhat.com>
Subject: [PATCH v5 13/19] arch_topology: Check for non-negative value rather than -1 for IDs validity
Date: Mon, 27 Jun 2022 17:50:41 +0100	[thread overview]
Message-ID: <20220627165047.336669-14-sudeep.holla@arm.com> (raw)
In-Reply-To: <20220627165047.336669-1-sudeep.holla@arm.com>

Instead of just comparing the cpu topology IDs with -1 to check their
validity, improve that by checking for a valid non-negative value.

Link: https://lore.kernel.org/r/20220621192034.3332546-14-sudeep.holla@arm.com
Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Tested-by: Ionela Voinescu <ionela.voinescu@arm.com>
Reviewed-by: Gavin Shan <gshan@redhat.com>
Signed-off-by: Sudeep Holla <sudeep.holla@arm.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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  parent reply	other threads:[~2022-06-27 16:55 UTC|newest]

Thread overview: 48+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-06-27 16:50 [PATCH v5 00/19] arch_topology: Updates to add socket support and fix cluster ids Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 01/19] ACPI: PPTT: Use table offset as fw_token instead of virtual address Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 02/19] cacheinfo: Use of_cpu_device_node_get instead cpu_dev->of_node Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 03/19] cacheinfo: Add helper to access any cache index for a given CPU Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 04/19] cacheinfo: Move cache_leaves_are_shared out of CONFIG_OF Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 05/19] cacheinfo: Add support to check if last level cache(LLC) is valid or shared Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 06/19] cacheinfo: Allow early detection and population of cache attributes Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 07/19] cacheinfo: Use cache identifiers to check if the caches are shared if available Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 08/19] arch_topology: Add support to parse and detect cache attributes Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 09/19] arch_topology: Use the last level cache information from the cacheinfo Sudeep Holla
2022-06-29 17:49   ` Conor.Dooley
2022-06-29 18:18     ` Conor.Dooley
2022-06-29 18:33       ` Sudeep Holla
2022-06-29 18:42       ` Sudeep Holla
2022-06-29 19:39         ` Conor.Dooley
2022-06-29 19:54           ` Sudeep Holla
2022-06-29 20:32             ` Conor.Dooley
2022-06-29 23:25               ` Conor.Dooley
2022-06-30 10:39                 ` Sudeep Holla
2022-06-30 16:37                   ` Conor.Dooley
2022-06-30 17:35                     ` Sudeep Holla
2022-06-30 19:20                       ` Conor.Dooley
2022-06-30 20:07                         ` Sudeep Holla
2022-06-30 20:13                           ` Conor.Dooley
2022-06-30 20:21                             ` Sudeep Holla
2022-06-30 22:07                               ` Conor.Dooley
2022-07-01 11:11                                 ` Sudeep Holla
2022-07-01 14:47                                   ` Conor.Dooley
2022-06-29 18:47       ` Sudeep Holla
2022-06-29 18:56         ` Conor.Dooley
2022-06-29 19:12           ` Sudeep Holla
2022-06-29 19:25             ` Conor.Dooley
2022-06-29 19:43               ` Sudeep Holla
2022-06-29 19:52                 ` Conor.Dooley
2022-06-29 18:29     ` Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 10/19] arm64: topology: Remove redundant setting of llc_id in CPU topology Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 11/19] arch_topology: Drop LLC identifier stash from the " Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 12/19] arch_topology: Set thread sibling cpumask only within the cluster Sudeep Holla
2022-06-27 16:50 ` Sudeep Holla [this message]
2022-06-27 16:50 ` [PATCH v5 14/19] arch_topology: Avoid parsing through all the CPUs once a outlier CPU is found Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 15/19] arch_topology: Don't set cluster identifier as physical package identifier Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 16/19] arch_topology: Limit span of cpu_clustergroup_mask() Sudeep Holla
2022-06-28 10:28   ` Vincent Guittot
2022-06-27 16:50 ` [PATCH v5 17/19] arch_topology: Set cluster identifier in each core/thread from /cpu-map Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 18/19] arch_topology: Add support for parsing sockets in /cpu-map Sudeep Holla
2022-06-27 16:50 ` [PATCH v5 19/19] arch_topology: Warn that topology for nested clusters is not supported Sudeep Holla
2022-06-29 13:06 ` [PATCH] ACPI: Remove the unused find_acpi_cpu_cache_topology() Sudeep Holla
2022-06-29 13:50   ` Rafael J. Wysocki

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