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Message-Id: <20200323135110.30522-12-qais.yousef@arm.com>
Date: Mon, 23 Mar 2020 13:51:04 +0000
From: Qais Yousef <qais.yousef@....com>
To: Thomas Gleixner <tglx@...utronix.de>
Cc: linux-kernel@...r.kernel.org, Qais Yousef <qais.yousef@....com>,
"David S. Miller" <davem@...emloft.net>,
Bjorn Helgaas <bhelgaas@...gle.com>,
"Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Sakari Ailus <sakari.ailus@...ux.intel.com>,
sparclinux@...r.kernel.org
Subject: [PATCH v4 11/17] sparc: Replace cpu_up/down with add/remove_cpu
The core device API performs extra housekeeping bits that are missing
from directly calling cpu_up/down.
See commit a6717c01ddc2 ("powerpc/rtas: use device model APIs and
serialization during LPM") for an example description of what might go
wrong.
This also prepares to make cpu_up/down a private interface for anything
but the cpu subsystem.
Acked-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Qais Yousef <qais.yousef@....com>
CC: "David S. Miller" <davem@...emloft.net>
CC: Thomas Gleixner <tglx@...utronix.de>
CC: Bjorn Helgaas <bhelgaas@...gle.com>
CC: "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
CC: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
CC: Sakari Ailus <sakari.ailus@...ux.intel.com>
CC: sparclinux@...r.kernel.org
CC: linux-kernel@...r.kernel.org
---
arch/sparc/kernel/ds.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/sparc/kernel/ds.c b/arch/sparc/kernel/ds.c
index bbf59b3b4af8..75232cbd58bf 100644
--- a/arch/sparc/kernel/ds.c
+++ b/arch/sparc/kernel/ds.c
@@ -555,7 +555,7 @@ static int dr_cpu_configure(struct ds_info *dp, struct ds_cap_state *cp,
printk(KERN_INFO "ds-%llu: Starting cpu %d...\n",
dp->id, cpu);
- err = cpu_up(cpu);
+ err = add_cpu(cpu);
if (err) {
__u32 res = DR_CPU_RES_FAILURE;
__u32 stat = DR_CPU_STAT_UNCONFIGURED;
@@ -611,7 +611,7 @@ static int dr_cpu_unconfigure(struct ds_info *dp,
printk(KERN_INFO "ds-%llu: Shutting down cpu %d...\n",
dp->id, cpu);
- err = cpu_down(cpu);
+ err = remove_cpu(cpu);
if (err)
dr_cpu_mark(resp, cpu, ncpus,
DR_CPU_RES_FAILURE,
--
2.17.1
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