linux-toradex.git/arch/sparc/lib/atomic_64.S, branch v3.2.47 Linux kernel for Apalis and Colibri modules sparc64: Make lock backoff really a NOP on UP builds. 2010-08-19T05:53:26+00:00 David S. Miller davem@davemloft.net 2010-08-19T05:53:26+00:00 0f58189d4a3ca96d7959501ecb203177efdbc5bd As noticed by Mikulas Patocka, the backoff macros don't completely nop out for UP builds, we still get a branch always and a delay slot nop. Fix this by making the branch to the backoff spin loop selective, then we can nop out the spin loop completely. Signed-off-by: David S. Miller <davem@davemloft.net> 
As noticed by Mikulas Patocka, the backoff macros don't
completely nop out for UP builds, we still get a
branch always and a delay slot nop.

Fix this by making the branch to the backoff spin loop
selective, then we can nop out the spin loop completely.

Signed-off-by: David S. Miller <davem@davemloft.net>
sparc64: simple microoptimizations for atomic functions 2010-08-19T05:51:08+00:00 Mikulas Patocka mpatocka@redhat.com 2010-08-18T08:03:37+00:00 6ec274750c99448c3412bbc10c97ce0c993f8a4e Simple microoptimizations for sparc64 atomic functions: Save one instruction by using a delay slot. Use %g1 instead of %g7, because %g1 is written earlier. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net> 
Simple microoptimizations for sparc64 atomic functions:
Save one instruction by using a delay slot.
Use %g1 instead of %g7, because %g1 is written earlier.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
sparc,sparc64: unify lib/ 2008-12-04T17:17:19+00:00 Sam Ravnborg sam@ravnborg.org 2008-12-03T11:10:25+00:00 478b8fecda511942404ac232897a718cecd13e48 o Renamed files in sparc64 to <name>_64.S when identical to sparc32 files. o iomap.c were equal for sparc32 and sparc64 o adjusted sparc/Makefile now we have only one lib/ Signed-off-by: Sam Ravnborg <sam@ravnborg.org> Signed-off-by: David S. Miller <davem@davemloft.net> 
o Renamed files in sparc64 to <name>_64.S when identical
  to sparc32 files.
o iomap.c were equal for sparc32 and sparc64
o adjusted sparc/Makefile now we have only one lib/

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>