| Message ID | 20171206125608.4750-1-prarit@redhat.com |
|---|---|
| State | Not Applicable, archived |
| Delegated to: | David Miller |
| Headers | show |
| Series | arch/x86: Initialize __max_smt_threads to 1 | expand |
diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index eaee15fb7d8b..882c61e1d7a2 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -106,7 +106,7 @@ EXPORT_SYMBOL(__max_logical_packages); static unsigned int logical_packages __read_mostly; /* Maximum number of SMT threads on any online core */ -int __max_smt_threads __read_mostly; +int __read_mostly __max_smt_threads = 1; /* Flag to indicate if a complete sched domain rebuild is required */ bool x86_topology_update;
A single socket, single core, single thread system has __max_smt_threads set to 0 since smp_callin() is not called. __max_smt_threads must be a minimum of 1. Fixes: b1cbacc8663a ("x86/smpboot: Do not use smp_num_siblings in __max_logical_packages calculation) Signed-off-by: Prarit Bhargava <prarit@redhat.com> Cc: Jakub Kicinski <kubakici@wp.pl> Cc: netdev@vger.kernel.org Cc: "netdev@vger.kernel.org" Cc: Clark Williams <williams@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: x86@kernel.org Cc: Thomas Gleixner <tglx@linutronix.de> Link: https://marc.info/?t=151246092100004&r=1&w=2 --- arch/x86/kernel/smpboot.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)