LoongArch architecture development
 help / color / mirror / Atom feed
From: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
To: linux-pm@vger.kernel.org, loongarch@lists.linux.dev,
	linux-acpi@vger.kernel.org, linux-arch@vger.kernel.org,
	linux-kernel@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	linux-riscv@lists.infradead.org, kvmarm@lists.linux.dev,
	x86@kernel.org, linux-csky@vger.kernel.org,
	linux-doc@vger.kernel.org, linux-ia64@vger.kernel.org,
	linux-parisc@vger.kernel.org
Cc: Salil Mehta <salil.mehta@huawei.com>,
	Jean-Philippe Brucker <jean-philippe@linaro.org>,
	jianyong.wu@arm.com, justin.he@arm.com,
	James Morse <james.morse@arm.com>,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	"Rafael J. Wysocki" <rafael@kernel.org>
Subject: [PATCH RFC 10/22] drivers: base: Move cpu_dev_init() after node_dev_init()
Date: Tue, 07 Nov 2023 10:30:09 +0000	[thread overview]
Message-ID: <E1r0JLV-00CTxS-QB@rmk-PC.armlinux.org.uk> (raw)
In-Reply-To: <ZUoRY33AAHMc5ThW@shell.armlinux.org.uk>

From: James Morse <james.morse@arm.com>

NUMA systems require the node descriptions to be ready before CPUs are
registered. This is so that the node symlinks can be created in sysfs.

Currently no NUMA platform uses GENERIC_CPU_DEVICES, meaning that CPUs
are registered by arch code, instead of cpu_dev_init().

Move cpu_dev_init() after node_dev_init() so that NUMA architectures
can use GENERIC_CPU_DEVICES.

Signed-off-by: James Morse <james.morse@arm.com>
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
---
Note: Jonathan's comment still needs addressing - see
  https://lore.kernel.org/r/20230914121612.00006ac7@Huawei.com
---
 drivers/base/init.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/base/init.c b/drivers/base/init.c
index 397eb9880cec..c4954835128c 100644
--- a/drivers/base/init.c
+++ b/drivers/base/init.c
@@ -35,8 +35,8 @@ void __init driver_init(void)
 	of_core_init();
 	platform_bus_init();
 	auxiliary_bus_init();
-	cpu_dev_init();
 	memory_dev_init();
 	node_dev_init();
+	cpu_dev_init();
 	container_dev_init();
 }
-- 
2.30.2


  parent reply	other threads:[~2023-11-07 10:30 UTC|newest]

Thread overview: 86+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-11-07 10:28 [PATCH RFC 00/22] Initial cleanups for vCPU hotplug Russell King (Oracle)
2023-11-07 10:29 ` [PATCH RFC 01/22] arch_topology: Make register_cpu_capacity_sysctl() tolerant to late CPUs Russell King
2023-11-13  0:04   ` Gavin Shan
2023-11-28 14:37   ` Jonathan Cameron
2023-11-28 15:41     ` Russell King (Oracle)
2023-11-07 10:29 ` [PATCH RFC 02/22] x86: intel_epb: Don't rely on link order Russell King
2023-11-13  0:03   ` Gavin Shan
2023-11-28 14:40   ` Jonathan Cameron
2023-11-28 15:42     ` Russell King (Oracle)
2023-11-07 10:29 ` [PATCH RFC 03/22] x86/topology: remove arch_*register_cpu() exports Russell King (Oracle)
2023-11-13  0:08   ` Gavin Shan
2023-11-28 14:42   ` Jonathan Cameron
2023-11-07 10:29 ` [PATCH RFC 04/22] Loongarch: " Russell King (Oracle)
2023-11-13  0:11   ` Gavin Shan
2023-11-28 14:43   ` Jonathan Cameron
2023-11-07 10:29 ` [PATCH RFC 05/22] ACPI: Move ACPI_HOTPLUG_CPU to be disabled on arm64 and riscv Russell King
2023-11-09  9:43   ` Shaoqin Huang
2023-11-13  0:29   ` Gavin Shan
2023-11-13  8:56     ` Russell King (Oracle)
2023-11-13 10:01       ` Gavin Shan
2023-11-28 14:46   ` Jonathan Cameron
2023-11-07 10:29 ` [PATCH RFC 06/22] drivers: base: Use present CPUs in GENERIC_CPU_DEVICES Russell King
2023-11-09 10:09   ` Shaoqin Huang
2023-11-09 10:29     ` Russell King (Oracle)
2023-11-09 10:59       ` Shaoqin Huang
2023-11-13  0:37   ` Gavin Shan
2023-11-07 10:29 ` [PATCH RFC 07/22] drivers: base: Allow parts of GENERIC_CPU_DEVICES to be overridden Russell King
2023-11-09 10:13   ` Shaoqin Huang
2023-11-13  0:42   ` Gavin Shan
2023-11-28 14:49   ` Jonathan Cameron
2023-11-07 10:29 ` [PATCH RFC 08/22] drivers: base: Implement weak arch_unregister_cpu() Russell King
2023-11-09 10:51   ` Shaoqin Huang
2023-11-13  0:45   ` Gavin Shan
2023-11-21 13:33   ` Russell King (Oracle)
2023-11-28 14:51     ` Jonathan Cameron
2023-11-07 10:30 ` [PATCH RFC 09/22] drivers: base: add arch_cpu_is_hotpluggable() Russell King (Oracle)
2023-11-10  3:27   ` Shaoqin Huang
2023-11-13  0:56   ` Gavin Shan
2023-11-28 14:53   ` Jonathan Cameron
2023-11-07 10:30 ` Russell King [this message]
2023-11-13  0:58   ` [PATCH RFC 10/22] drivers: base: Move cpu_dev_init() after node_dev_init() Gavin Shan
2023-11-13  8:00     ` Russell King (Oracle)
2023-11-21 13:27       ` Russell King (Oracle)
2023-11-28 13:55         ` Jonathan Cameron
2023-11-28 15:00           ` Jonathan Cameron
2023-11-30 12:17     ` Russell King (Oracle)
2023-11-07 10:30 ` [PATCH RFC 11/22] drivers: base: remove unnecessary call to register_cpu_under_node() Russell King (Oracle)
2023-11-13  4:04   ` Gavin Shan
2023-11-15 10:11     ` Russell King (Oracle)
2023-11-07 10:30 ` [PATCH RFC 12/22] drivers: base: Print a warning instead of panic() when register_cpu() fails Russell King
2023-11-10  3:35   ` Shaoqin Huang
2023-11-13  4:03   ` Gavin Shan
2023-11-28 15:05   ` Jonathan Cameron
2023-11-07 10:30 ` [PATCH RFC 13/22] arm64: setup: Switch over to GENERIC_CPU_DEVICES using arch_register_cpu() Russell King
2023-11-10  3:36   ` Shaoqin Huang
2023-11-13  4:07   ` Gavin Shan
2023-11-28 15:08   ` Jonathan Cameron
2023-11-28 15:12     ` Jonathan Cameron
2023-11-07 10:30 ` [PATCH RFC 14/22] arm64: convert to arch_cpu_is_hotpluggable() Russell King (Oracle)
2023-11-10  3:37   ` Shaoqin Huang
2023-11-13  4:09   ` Gavin Shan
2023-11-28 15:11   ` Jonathan Cameron
2023-11-30 12:09     ` Russell King (Oracle)
2023-11-07 10:30 ` [PATCH RFC 15/22] x86/topology: Switch over to GENERIC_CPU_DEVICES Russell King
2023-11-13  4:13   ` Gavin Shan
2023-11-28 15:16   ` Jonathan Cameron
2023-11-07 10:30 ` [PATCH RFC 16/22] x86/topology: use weak version of arch_unregister_cpu() Russell King (Oracle)
2023-11-13  4:16   ` Gavin Shan
2023-11-28 15:17   ` Jonathan Cameron
2023-11-07 10:30 ` [PATCH RFC 17/22] x86/topology: convert to use arch_cpu_is_hotpluggable() Russell King (Oracle)
2023-11-13  4:18   ` Gavin Shan
2023-11-28 15:18   ` Jonathan Cameron
2023-11-07 10:30 ` [PATCH RFC 18/22] LoongArch: Switch over to GENERIC_CPU_DEVICES Russell King
2023-11-13  4:20   ` Gavin Shan
2023-11-28 15:19   ` Jonathan Cameron
2023-11-07 10:30 ` [PATCH RFC 19/22] LoongArch: Use the __weak version of arch_unregister_cpu() Russell King
2023-11-07 10:31 ` [PATCH RFC 20/22] LoongArch: convert to use arch_cpu_is_hotpluggable() Russell King (Oracle)
2023-11-13  4:22   ` Gavin Shan
2023-11-28 15:20   ` Jonathan Cameron
2023-11-07 10:31 ` [PATCH RFC 21/22] riscv: Switch over to GENERIC_CPU_DEVICES Russell King
2023-11-07 17:48   ` Palmer Dabbelt
2023-11-13  4:23   ` Gavin Shan
2023-11-07 10:31 ` [PATCH RFC 22/22] riscv: convert to use arch_cpu_is_hotpluggable() Russell King (Oracle)
2023-11-07 17:48   ` Palmer Dabbelt
2023-11-13  4:24   ` Gavin Shan
2023-11-28 15:21   ` Jonathan Cameron

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=E1r0JLV-00CTxS-QB@rmk-PC.armlinux.org.uk \
    --to=rmk+kernel@armlinux.org.uk \
    --cc=gregkh@linuxfoundation.org \
    --cc=james.morse@arm.com \
    --cc=jean-philippe@linaro.org \
    --cc=jianyong.wu@arm.com \
    --cc=justin.he@arm.com \
    --cc=kvmarm@lists.linux.dev \
    --cc=linux-acpi@vger.kernel.org \
    --cc=linux-arch@vger.kernel.org \
    --cc=linux-arm-kernel@lists.infradead.org \
    --cc=linux-csky@vger.kernel.org \
    --cc=linux-doc@vger.kernel.org \
    --cc=linux-ia64@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-parisc@vger.kernel.org \
    --cc=linux-pm@vger.kernel.org \
    --cc=linux-riscv@lists.infradead.org \
    --cc=loongarch@lists.linux.dev \
    --cc=rafael@kernel.org \
    --cc=salil.mehta@huawei.com \
    --cc=x86@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox