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Subject[RFC v2 PATCH 03/11] sched: define TOPOLOGY_SD_FLAGS
Date
From: Dietmar Eggemann <dietmar.eggemann@arm.com>

TOPOLOGY_SD_FLAGS contains all SD flags which provide topology related
information towards the scheduler. All other SD flags describe scheduler
behavioural aspects. The aim of TOPOLOGY_SD_FLAGS is to be able to check
that the arch only specifies topology related flags in the topology info
array.

Signed-off-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
---
kernel/sched/sched.h | 16 ++++++++++++++++
1 file changed, 16 insertions(+)

diff --git a/kernel/sched/sched.h b/kernel/sched/sched.h
index 88c85b21d633..fcf2d4317217 100644
--- a/kernel/sched/sched.h
+++ b/kernel/sched/sched.h
@@ -1414,3 +1414,19 @@ static inline u64 irq_time_read(int cpu)
}
#endif /* CONFIG_64BIT */
#endif /* CONFIG_IRQ_TIME_ACCOUNTING */
+
+/*
+ * SD_flags allowed in topology descriptions.
+ *
+ * SD_SHARE_CPUPOWER - describes SMT topologies
+ * SD_SHARE_PKG_RESOURCES - describes shared caches
+ * SD_NUMA - describes NUMA topologies
+ *
+ * Odd one out:
+ * SD_ASYM_PACKING - describes SMT quirks
+ */
+#define TOPOLOGY_SD_FLAGS \
+ (SD_SHARE_CPUPOWER | \
+ SD_SHARE_PKG_RESOURCES | \
+ SD_NUMA | \
+ SD_ASYM_PACKING)
--
1.7.9.5



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