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irqdomain: Move revmap_trees_mutex to struct irq_domain

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The revmap_trees_mutex protects domain->revmap_tree.  There is no
need to make it global because it is allowed to modify revmap_tree
of two different domains concurrently.  Having said that, this would
not be a actual bottleneck because the interrupt map/unmap does not
occur quite often.  Rather, the motivation is to tidy up the code
from a data structure point of view.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Masahiro Yamada
2017-10-05 10:44:54 +09:00
committed by Marc Zyngier
parent c94fb639d5
commit f1d7835854
2 changed files with 9 additions and 7 deletions
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2
include/linux/irqdomain.h
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@@ -32,6 +32,7 @@
#include <linux/types.h>
#include <linux/irqhandler.h>
#include <linux/of.h>
#include <linux/mutex.h>
#include <linux/radix-tree.h>
struct device_node;
@@ -176,6 +177,7 @@ struct irq_domain {
unsigned int revmap_direct_max_irq;
unsigned int revmap_size;
struct radix_tree_root revmap_tree;
struct mutex revmap_tree_mutex;
unsigned int linear_revmap[];
};