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Subject[PATCH 1/8] cpumask: Introduce cpumask_of_{node,pcibus} to replace {node,pcibus}_to_cpumask

Impact: New APIs

The old node_to_cpumask/node_to_pcibus returned a cpumask_t: these
return a pointer to a struct cpumask. Part of removing cpumasks from
the stack.

Please take (or ack) the patch for your arch so I can get substitute
the callers and kill the old versions.

This does the generic ones.

Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: Richard Henderson <rth@twiddle.net>
---
include/asm-generic/topology.h | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/include/asm-generic/topology.h b/include/asm-generic/topology.h
--- a/include/asm-generic/topology.h
+++ b/include/asm-generic/topology.h
@@ -40,6 +40,9 @@
#ifndef node_to_cpumask
#define node_to_cpumask(node) ((void)node, cpu_online_map)
#endif
+#ifndef cpumask_of_node
+#define cpumask_of_node(node) ((void)node, cpu_online_mask)
+#endif
#ifndef node_to_first_cpu
#define node_to_first_cpu(node) ((void)(node),0)
#endif
@@ -54,9 +57,18 @@
)
#endif

+#ifndef cpumask_of_pcibus
+#define cpumask_of_pcibus(bus) (pcibus_to_node(bus) == -1 ? \
+ cpu_all_mask : \
+ cpumask_of_node(pcibus_to_node(bus)))
+#endif
+
#endif /* CONFIG_NUMA */

-/* returns pointer to cpumask for specified node */
+/*
+ * returns pointer to cpumask for specified node
+ * Deprecated: use "const struct cpumask *mask = cpumask_of_node(node)"
+ */
#ifndef node_to_cpumask_ptr

#define node_to_cpumask_ptr(v, node) \


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