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| author | Matthew Wilcox <mawilcox@microsoft.com> | 2018-06-07 17:10:45 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-07 17:34:39 -0700 |
| commit | b94078e69533ba237e2c229bca61bae47e6fafcc (patch) | |
| tree | 2122fc9875a583326661ca72092b1b0f325d8ffd /lib/dma-noncoherent.c | |
| parent | ca1250bbd4e0b852cafbc94d4d2610171107b252 (diff) | |
| download | linux-b94078e69533ba237e2c229bca61bae47e6fafcc.tar.bz2 | |
lib/idr.c: remove simple_ida_lock
Improve the scalability of the IDA by using the per-IDA xa_lock rather
than the global simple_ida_lock. IDAs are not typically used in
performance-sensitive locations, but since we have this lock anyway, we
can use it. It is also a step towards converting the IDA from the radix
tree to the XArray.
[akpm@linux-foundation.org: idr.c needs xarray.h]
Link: http://lkml.kernel.org/r/20180331125332.GF13332@bombadil.infradead.org
Signed-off-by: Matthew Wilcox <mawilcox@microsoft.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Rasmus Villemoes <linux@rasmusvillemoes.dk>
Cc: Daniel Vetter <daniel.vetter@ffwll.ch>
Cc: Tejun Heo <tj@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib/dma-noncoherent.c')
0 files changed, 0 insertions, 0 deletions