| From: Thomas Gleixner <tglx@linutronix.de> |
| Date: Tue, 16 May 2017 20:42:37 +0200 |
| Subject: [PATCH 06/17] powerpc: Adjust system_state check |
| |
| 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> |
| Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> |
| Acked-by: Michael Ellerman <mpe@ellerman.id.au> |
| Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> |
| Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> |
| Cc: Linus Torvalds <torvalds@linux-foundation.org> |
| Cc: Mark Rutland <mark.rutland@arm.com> |
| Cc: Paul Mackerras <paulus@samba.org> |
| Cc: Peter Zijlstra <peterz@infradead.org> |
| Cc: Steven Rostedt <rostedt@goodmis.org> |
| Cc: linuxppc-dev@lists.ozlabs.org |
| Link: http://lkml.kernel.org/r/20170516184735.359536998@linutronix.de |
| Signed-off-by: Ingo Molnar <mingo@kernel.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 |
| @@ -98,7 +98,7 @@ 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 |
