Re: PATCH powerpc Merge asm-ppc*/rwsem.h
From: David Howells <dhowells@redhat.com>
Date: 2005-09-23 07:52:30
Anton Blanchard [off-list ref] wrote:
quoted
The counter should be "signed long" really.Agreed, we should move to a 64bit count.
With a 64-bit counter, the constants should be: #define RWSEM_UNLOCKED_VALUE 0x0000000000000000L #define RWSEM_ACTIVE_BIAS 0x0000000000000001L #define RWSEM_ACTIVE_MASK 0x00000000ffffffffL #define RWSEM_WAITING_BIAS (-0x0000000100000000L) #define RWSEM_ACTIVE_READ_BIAS RWSEM_ACTIVE_BIAS #define RWSEM_ACTIVE_WRITE_BIAS (RWSEM_WAITING_BIAS + RWSEM_ACTIVE_BIAS) Just like in the asm-s390/rwsem.h. David