From: Cristian Marussi <cristian.marussi@arm.com>
To: linux-kernel@vger.kernel.org
Cc: linux-arch@vger.kernel.org, mark.rutland@arm.com,
peterz@infradead.org, catalin.marinas@arm.com,
takahiro.akashi@linaro.org, james.morse@arm.com,
hidehiro.kawai.ez@hitachi.com, tglx@linutronix.de,
will@kernel.org, dave.martin@arm.com,
linux-arm-kernel@lists.infradead.org, mingo@redhat.com,
x86@kernel.org, dzickus@redhat.com, ehabkost@redhat.com,
linux@armlinux.org.uk, davem@davemloft.net,
sparclinux@vger.kernel.org, hch@infradead.org
Subject: [RFC PATCH v2 12/12] sparc64: smp: use generic SMP stop common code
Date: Fri, 13 Sep 2019 19:19:53 +0100 [thread overview]
Message-ID: <20190913181953.45748-13-cristian.marussi@arm.com> (raw)
In-Reply-To: <20190913181953.45748-1-cristian.marussi@arm.com>
Make sparc64 use the generic SMP-stop logic provided by common code
unified smp_send_stop() function.
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
---
arch/sparc/Kconfig | 1 +
arch/sparc/kernel/smp_64.c | 15 ++++++++-------
2 files changed, 9 insertions(+), 7 deletions(-)
diff --git a/arch/sparc/Kconfig b/arch/sparc/Kconfig
index 7926a2e11bdc..67d8bb741378 100644
--- a/arch/sparc/Kconfig
+++ b/arch/sparc/Kconfig
@@ -95,6 +95,7 @@ config SPARC64
select ARCH_HAS_PTE_SPECIAL
select PCI_DOMAINS if PCI
select ARCH_HAS_GIGANTIC_PAGE
+ select ARCH_USE_COMMON_SMP_STOP
config ARCH_DEFCONFIG
string
diff --git a/arch/sparc/kernel/smp_64.c b/arch/sparc/kernel/smp_64.c
index a8275fea4b70..759e5fd867c5 100644
--- a/arch/sparc/kernel/smp_64.c
+++ b/arch/sparc/kernel/smp_64.c
@@ -1537,7 +1537,12 @@ static void stop_this_cpu(void *dummy)
prom_stopself();
}
-void smp_send_stop(void)
+void arch_smp_cpus_stop_complete(void)
+{
+ smp_call_function(stop_this_cpu, NULL, 0);
+}
+
+void arch_smp_stop_call(cpumask_t *cpus, unsigned int __unused)
{
int cpu;
@@ -1546,10 +1551,7 @@ void smp_send_stop(void)
#ifdef CONFIG_SERIAL_SUNHV
sunhv_migrate_hvcons_irq(this_cpu);
#endif
- for_each_online_cpu(cpu) {
- if (cpu == this_cpu)
- continue;
-
+ for_each_cpu(cpu, cpus) {
set_cpu_online(cpu, false);
#ifdef CONFIG_SUN_LDOMS
if (ldom_domaining_enabled) {
@@ -1562,8 +1564,7 @@ void smp_send_stop(void)
#endif
prom_stopcpu_cpuid(cpu);
}
- } else
- smp_call_function(stop_this_cpu, NULL, 0);
+ }
}
/**
--
2.17.1
next prev parent reply other threads:[~2019-09-13 18:21 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-09-13 18:19 [RFC PATCH v2 00/12] Unify SMP stop generic logic to common code Cristian Marussi
2019-09-13 18:19 ` [RFC PATCH v2 01/12] smp: add generic SMP-stop support " Cristian Marussi
2019-09-23 14:20 ` Cristian Marussi
2019-09-13 18:19 ` [RFC PATCH v2 02/12] smp: unify crash_ and smp_send_stop() logic Cristian Marussi
2019-09-13 18:19 ` [RFC PATCH v2 03/12] smp: coordinate concurrent crash/smp stop calls Cristian Marussi
2019-09-13 18:19 ` [RFC PATCH v2 04/12] smp: address races of starting CPUs while stopping Cristian Marussi
2019-09-13 18:19 ` [RFC PATCH v2 05/12] arm64: smp: use generic SMP stop common code Cristian Marussi
2019-09-13 18:19 ` [RFC PATCH v2 06/12] arm64: smp: use SMP crash-stop " Cristian Marussi
2019-09-13 18:19 ` [RFC PATCH v2 07/12] arm64: smp: add arch specific cpu parking helper Cristian Marussi
2019-09-13 18:19 ` [RFC PATCH v2 08/12] x86: smp: use generic SMP stop common code Cristian Marussi
2019-09-13 18:19 ` [RFC PATCH v2 09/12] x86: smp: use SMP crash-stop " Cristian Marussi
2019-09-13 18:19 ` [RFC PATCH v2 10/12] arm: smp: use generic SMP stop " Cristian Marussi
2019-09-13 18:19 ` [RFC PATCH v2 11/12] arm: smp: use SMP crash-stop " Cristian Marussi
2019-09-13 18:19 ` Cristian Marussi [this message]
2019-09-13 18:27 ` [RFC PATCH v2 00/12] Unify SMP stop generic logic to " Russell King - ARM Linux admin
2019-09-16 9:38 ` Cristian Marussi
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