linux-kernel - [PATCH v2 08/19] ARC: Mark secondary cpu online only after all HW setup is done

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Sat, 7 Nov 2015 12:52:26 +0200
From:	Noam Camus <noamc@...hip.com>
To:	<linux-snps-arc@...ts.infradead.org>
CC:	<linux-kernel@...r.kernel.org>, <talz@...hip.com>,
	<gilf@...hip.com>, <cmetcalf@...hip.com>,
	Noam Camus <noamc@...hip.com>
Subject: [PATCH v2 08/19] ARC: Mark secondary cpu online only after all HW setup is done

From: Noam Camus <noamc@...hip.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@...hip.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 0b061a4..bc0e4f6 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_cpu_smp)
 		machine_desc->init_cpu_smp(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

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/