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, Gavin Shan <gshan@redhat.com>
Subject: [PATCH v5 14/19] arch_topology: Avoid parsing through all the CPUs once a outlier CPU is found
Date: Mon, 27 Jun 2022 17:50:42 +0100 [thread overview]
Message-ID: <20220627165047.336669-15-sudeep.holla@arm.com> (raw)
In-Reply-To: <20220627165047.336669-1-sudeep.holla@arm.com>
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.
Link: https://lore.kernel.org/r/20220621192034.3332546-15-sudeep.holla@arm.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, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/base/arch_topology.c b/drivers/base/arch_topology.c
index ef90d9c00d9e..7a569aefe313 100644
--- a/drivers/base/arch_topology.c
+++ b/drivers/base/arch_topology.c
@@ -642,8 +642,10 @@ 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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next prev parent reply other threads:[~2022-06-27 16:56 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 ` [PATCH v5 13/19] arch_topology: Check for non-negative value rather than -1 for IDs validity Sudeep Holla
2022-06-27 16:50 ` Sudeep Holla [this message]
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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