diff options
| author | Thomas Gleixner <tglx@linutronix.de> | 2010-12-09 18:17:25 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2010-12-09 18:17:25 +0100 |
| commit | d834a9dcecae834cd6b2bc5e50e1907738d9cf6a (patch) | |
| tree | 0589d753465d3fe359ba451ba6cb7798df03aaa2 /include/linux/idr.h | |
| parent | a38c5380ef9f088be9f49b6e4c5d80af8b1b5cd4 (diff) | |
| parent | f658bcfb2607bf0808966a69cf74135ce98e5c2d (diff) | |
Merge branch 'x86/amd-nb' into x86/apic-cleanups
Reason: apic cleanup series depends on x86/apic, x86/amd-nb x86/platform
Conflicts:
arch/x86/include/asm/io_apic.h
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/idr.h')
| -rw-r--r-- | include/linux/idr.h | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/include/linux/idr.h b/include/linux/idr.h index cdb715e58e3e..13a801f3d028 100644 --- a/include/linux/idr.h +++ b/include/linux/idr.h @@ -81,6 +81,7 @@ struct idr { #define _idr_rc_to_errno(rc) ((rc) == -1 ? -EAGAIN : -ENOSPC) /** + * DOC: idr sync * idr synchronization (stolen from radix-tree.h) * * idr_find() is able to be called locklessly, using RCU. The caller must @@ -117,10 +118,13 @@ void idr_init(struct idr *idp); /* * IDA - IDR based id allocator, use when translation from id to * pointer isn't necessary. + * + * IDA_BITMAP_LONGS is calculated to be one less to accommodate + * ida_bitmap->nr_busy so that the whole struct fits in 128 bytes. */ #define IDA_CHUNK_SIZE 128 /* 128 bytes per chunk */ -#define IDA_BITMAP_LONGS (128 / sizeof(long) - 1) -#define IDA_BITMAP_BITS (IDA_BITMAP_LONGS * sizeof(long) * 8) +#define IDA_BITMAP_LONGS (IDA_CHUNK_SIZE / sizeof(long) - 1) +#define IDA_BITMAP_BITS (IDA_BITMAP_LONGS * sizeof(long) * 8) struct ida_bitmap { long nr_busy; |