From: Noam Camus <noamc@ezchip.com>
To: <linux-snps-arc@lists.infradead.org>
Cc: <linux-kernel@vger.kernel.org>, <cmetcalf@ezchip.com>,
<daniel.lezcano@linaro.org>, <marc.zyngier@arm.com>,
Noam Camus <noamc@ezchip.com>
Subject: [PATCH v5 08/20] ARC: Mark secondary cpu online only after all HW setup is done
Date: Sun, 27 Dec 2015 15:23:27 +0200 [thread overview]
Message-ID: <1451222619-3610-9-git-send-email-noamc@ezchip.com> (raw)
In-Reply-To: <1451222619-3610-1-git-send-email-noamc@ezchip.com>
From: Noam Camus <noamc@ezchip.com>
In SMP setup, master loops for each_present_cpu calling cpu_up().
For ARC it returns as soon as new cpu's status becomes online,
However secondary may still do HW initializing,
machine or platform hook level.
So turn secondary online only after all HW setup is done.
Signed-off-by: Noam Camus <noamc@ezchip.com>
Acked-by: Vineet Gupta <vgupta@synopsys.com>
---
arch/arc/kernel/smp.c | 10 +++++-----
1 files changed, 5 insertions(+), 5 deletions(-)
diff --git a/arch/arc/kernel/smp.c b/arch/arc/kernel/smp.c
index ef6e9e1..2cfe135 100644
--- a/arch/arc/kernel/smp.c
+++ b/arch/arc/kernel/smp.c
@@ -126,11 +126,6 @@ void start_kernel_secondary(void)
current->active_mm = mm;
cpumask_set_cpu(cpu, mm_cpumask(mm));
- notify_cpu_starting(cpu);
- set_cpu_online(cpu, true);
-
- pr_info("## CPU%u LIVE ##: Executing Code...\n", cpu);
-
/* Some SMP H/w setup - for each cpu */
if (plat_smp_ops.init_per_cpu)
plat_smp_ops.init_per_cpu(cpu);
@@ -138,6 +133,11 @@ void start_kernel_secondary(void)
if (machine_desc->init_per_cpu)
machine_desc->init_per_cpu(cpu);
+ notify_cpu_starting(cpu);
+ set_cpu_online(cpu, true);
+
+ pr_info("## CPU%u LIVE ##: Executing Code...\n", cpu);
+
arc_local_timer_setup();
local_irq_enable();
--
1.7.1
next prev parent reply other threads:[~2015-12-27 13:28 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-12-27 13:23 [PATCH v5 00/20] Adding plat-eznps to ARC Noam Camus
2015-12-27 13:23 ` [PATCH v5 01/20] Documentation: Add EZchip vendor to binding list Noam Camus
2015-12-27 13:23 ` [PATCH v5 02/20] soc: Support for EZchip SoC Noam Camus
2015-12-27 13:23 ` [PATCH v5 03/20] ARC: [plat-eznps] define IPI_IRQ Noam Camus
2015-12-27 13:23 ` [PATCH v5 04/20] clocksource: Add NPS400 timers driver Noam Camus
2015-12-27 14:55 ` kbuild test robot
2015-12-27 21:41 ` Noam Camus
2015-12-28 9:00 ` Daniel Lezcano
2015-12-28 10:35 ` Vineet Gupta
2015-12-28 10:55 ` Daniel Lezcano
2015-12-28 11:11 ` Vineet Gupta
2016-01-01 10:31 ` Vineet Gupta
2015-12-27 13:23 ` [PATCH v5 05/20] irqchip: add nps Internal and external irqchips Noam Camus
2015-12-30 10:08 ` Vineet Gupta
2015-12-30 10:41 ` Vineet Gupta
2015-12-27 13:23 ` [PATCH v5 06/20] ARC: Set vmalloc size from configuration Noam Camus
2015-12-27 13:23 ` [PATCH v5 07/20] ARC: rwlock: disable interrupts in !LLSC variant Noam Camus
2015-12-27 13:23 ` Noam Camus [this message]
2015-12-27 13:23 ` [PATCH v5 09/20] ARC: IRQ: use device tree to get timer device configuration Noam Camus
2015-12-28 11:42 ` Vineet Gupta
2015-12-30 11:20 ` Vineet Gupta
2015-12-27 13:23 ` [PATCH v5 10/20] ARC: IRQ: do not use hwirq directly at arch_do_IRQ() Noam Camus
2015-12-30 10:10 ` Vineet Gupta
2015-12-31 5:21 ` Noam Camus
2015-12-27 13:23 ` [PATCH v5 11/20] ARC: IPI: do not use generic IRQ domain Noam Camus
2015-12-30 10:13 ` Vineet Gupta
2015-12-31 5:14 ` Noam Camus
2015-12-27 13:23 ` [PATCH v5 12/20] ARC: [plat-eznps] Add eznps board defconfig and dts Noam Camus
2015-12-27 13:23 ` [PATCH v5 13/20] ARC: [plat-eznps] Add eznps platform Noam Camus
2015-12-27 13:23 ` [PATCH v5 14/20] ARC: [plat-eznps] Use dedicated user stack top Noam Camus
2015-12-27 13:23 ` [PATCH v5 15/20] ARC: [plat-eznps] Use dedicated atomic/bitops/cmpxchg Noam Camus
2015-12-27 13:23 ` [PATCH v5 16/20] ARC: [plat-eznps] Use dedicated SMP barriers Noam Camus
2015-12-27 13:23 ` [PATCH v5 17/20] ARC: [plat-eznps] Use dedicated identity auxiliary register Noam Camus
2015-12-27 13:23 ` [PATCH v5 18/20] ARC: [plat-eznps] Use dedicated cpu_relax() Noam Camus
2015-12-27 13:23 ` [PATCH v5 19/20] ARC: [plat-eznps] Use dedicated COMMAND_LINE_SIZE Noam Camus
2015-12-27 13:23 ` [PATCH v5 20/20] ARC: Add eznps platform to Kconfig and Makefile Noam Camus
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