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ida: Move ida_bitmap to a percpu variable

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When we preload the IDA, we allocate an IDA bitmap.  Instead of storing
that preallocated bitmap in the IDA, we store it in a percpu variable.
Generally there are more IDAs in the system than CPUs, so this cuts down
on the number of preallocated bitmaps that are unused, and about half
of the IDA users did not call ida_destroy() so they were leaking IDA
bitmaps.

Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
This commit is contained in:
Matthew Wilcox 2016-12-16 11:55:56 -05:00
parent 0a835c4f09
commit 7ad3d4d85c
5 changed files with 51 additions and 45 deletions
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2
tools/testing/radix-tree/linux/kernel.h
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@ -24,6 +24,4 @@
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
#define xchg(ptr, x) uatomic_xchg(ptr, x)
#endif /* _KERNEL_H */