From: Qais Yousef <qais.yousef@arm.com>
To: Thomas Gleixner <tglx@linutronix.de>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Qais Yousef <qais.yousef@arm.com>,
Tony Luck <tony.luck@intel.com>,
Fenghua Yu <fenghua.yu@intel.com>,
linux-ia64@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH 04/12] ia64: Replace cpu_down with freeze_secondary_cpus
Date: Wed, 30 Oct 2019 15:38:29 +0000 [thread overview]
Message-ID: <20191030153837.18107-5-qais.yousef@arm.com> (raw)
In-Reply-To: <20191030153837.18107-1-qais.yousef@arm.com>
Use freeze_secondary_cpus() instead of open coding using cpu_down()
directly.
This also prepares to make cpu_up/down a private interface for anything
but the cpu subsystem.
Signed-off-by: Qais Yousef <qais.yousef@arm.com>
CC: Tony Luck <tony.luck@intel.com>
CC: Fenghua Yu <fenghua.yu@intel.com>
CC: linux-ia64@vger.kernel.org
CC: linux-kernel@vger.kernel.org
---
arch/ia64/kernel/process.c | 8 ++------
1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/arch/ia64/kernel/process.c b/arch/ia64/kernel/process.c
index 968b5f33e725..70b433eafa5c 100644
--- a/arch/ia64/kernel/process.c
+++ b/arch/ia64/kernel/process.c
@@ -647,12 +647,8 @@ cpu_halt (void)
void machine_shutdown(void)
{
#ifdef CONFIG_HOTPLUG_CPU
- int cpu;
-
- for_each_online_cpu(cpu) {
- if (cpu != smp_processor_id())
- cpu_down(cpu);
- }
+ /* TODO: Can we use disable_nonboot_cpus()? */
+ freeze_secondary_cpus(smp_processor_id());
#endif
#ifdef CONFIG_KEXEC
kexec_disable_iosapic();
--
2.17.1
next prev parent reply other threads:[~2019-10-30 15:42 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20191030153837.18107-1-qais.yousef@arm.com>
2019-10-30 15:38 ` [PATCH 01/12] arm64: hibernate.c: create a new function to handle cpu_up(sleep_cpu) Qais Yousef
2019-11-19 22:31 ` Thomas Gleixner
2019-11-19 22:51 ` Qais Yousef
2019-11-19 23:01 ` Thomas Gleixner
2019-11-19 23:21 ` Qais Yousef
2019-10-30 15:38 ` [PATCH 02/12] x86: Replace cpu_up/down with devcie_online/offline Qais Yousef
2019-10-30 15:38 ` [PATCH 03/12] powerpc: Replace cpu_up/down with device_online/offline Qais Yousef
2019-11-19 1:19 ` Michael Ellerman
2019-11-19 9:47 ` Qais Yousef
2019-10-30 15:38 ` Qais Yousef [this message]
2019-11-02 4:59 ` [PATCH 04/12] ia64: Replace cpu_down with freeze_secondary_cpus kbuild test robot
2019-11-19 22:21 ` Thomas Gleixner
2019-11-19 22:32 ` Qais Yousef
2019-11-19 22:59 ` Thomas Gleixner
2019-11-19 23:19 ` Qais Yousef
2019-11-20 8:46 ` Thomas Gleixner
2019-11-20 10:49 ` Qais Yousef
2019-10-30 15:38 ` [PATCH 05/12] sparc: Replace cpu_up/down with device_online/offline Qais Yousef
2019-10-30 19:33 ` David Miller
2019-10-30 15:38 ` [PATCH 06/12] parisc: " Qais Yousef
2019-11-20 11:09 ` Qais Yousef
2019-11-22 19:51 ` Helge Deller
2019-11-24 10:20 ` Qais Yousef
2019-10-30 15:38 ` [PATCH 07/12] driver: base: cpu: export device_online/offline Qais Yousef
2019-11-02 17:17 ` Greg Kroah-Hartman
2019-10-30 15:38 ` [PATCH 08/12] driver: xen: Replace cpu_up/down with device_online/offline Qais Yousef
2019-10-30 15:38 ` [PATCH 09/12] firmware: psci: " Qais Yousef
2019-10-30 15:38 ` [PATCH 10/12] torture: " Qais Yousef
2019-10-30 15:38 ` [PATCH 11/12] smp: Create a new function to bringup nonboot cpus online Qais Yousef
2019-11-19 22:42 ` Thomas Gleixner
2019-10-30 15:38 ` [PATCH 12/12] cpu: Hide cpu_up/down Qais Yousef
2019-11-19 22:25 ` Thomas Gleixner
2019-11-19 22:36 ` Qais Yousef
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