[patch 06/18] powerpc: Adjust system_state check

From	Thomas Gleixner <tglx@linutronix.de>
Newsgroups	linux.kernel
Subject	[patch 06/18] powerpc: Adjust system_state check
Date	2017-05-14 20:50 +0200
Message-ID	<tH6KB-5j9-11@gated-at.bofh.it> (permalink)
References	<tH6AV-56V-3@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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To enable smp_processor_id() and might_sleep() debug checks earlier, it's
required to add system states between SYSTEM_BOOTING and SYSTEM_RUNNING.

Adjust the system_state check in smp_generic_cpu_bootable() to handle the
extra states.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: linuxppc-dev@lists.ozlabs.org
---
 arch/powerpc/kernel/smp.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/powerpc/kernel/smp.c
+++ b/arch/powerpc/kernel/smp.c
@@ -97,7 +97,7 @@ int smp_generic_cpu_bootable(unsigned in
 	/* Special case - we inhibit secondary thread startup
 	 * during boot if the user requests it.
 	 */
-	if (system_state == SYSTEM_BOOTING && cpu_has_feature(CPU_FTR_SMT)) {
+	if (system_state < SYSTEM_RUNNING && cpu_has_feature(CPU_FTR_SMT)) {
 		if (!smt_enabled_at_boot && cpu_thread_in_core(nr) != 0)
 			return 0;
 		if (smt_enabled_at_boot

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[patch 06/18] powerpc: Adjust system_state check Thomas Gleixner <tglx@linutronix.de> - 2017-05-14 20:50 +0200
  Re: [patch 06/18] powerpc: Adjust system_state check Michael Ellerman <mpe@ellerman.id.au> - 2017-05-15 11:20 +0200

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