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| Started by | Thomas Gleixner <tglx@linutronix.de> |
|---|---|
| First post | 2017-05-14 20:50 +0200 |
| Last post | 2017-05-15 11:20 +0200 |
| Articles | 2 — 2 participants |
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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
| From | Thomas Gleixner <tglx@linutronix.de> |
|---|---|
| Date | 2017-05-14 20:50 +0200 |
| Subject | [patch 06/18] powerpc: Adjust system_state check |
| Message-ID | <tH6KB-5j9-11@gated-at.bofh.it> |
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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| From | Michael Ellerman <mpe@ellerman.id.au> |
|---|---|
| Date | 2017-05-15 11:20 +0200 |
| Message-ID | <tHkky-6aZ-23@gated-at.bofh.it> |
| In reply to | #1641186 |
Thomas Gleixner <tglx@linutronix.de> writes: > 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(-) Acked-by: Michael Ellerman <mpe@ellerman.id.au> cheers
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