| caa17d49f9a5cc09b3bbb101dc640f914f3b4ff7 |
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02-Sep-2014 |
Peter Zijlstra <peterz@infradead.org> |
locking, sparc64: Fix atomics
The patch folding the atomic ops had a silly fail in the _return primitives.
Fixes: 4f3316c2b5fe ("locking,arch,sparc: Fold atomic_ops")
Reported-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: David S. Miller <davem@davemloft.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: sparclinux@vger.kernel.org
Link: http://lkml.kernel.org/r/20140902094016.GD31157@worktop.ger.corp.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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| 4f3316c2b5fe2062c26c9b66915b5a5c80c60a5c |
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26-Mar-2014 |
Peter Zijlstra <peterz@infradead.org> |
locking,arch,sparc: Fold atomic_ops
Many of the atomic op implementations are the same except for one
instruction; fold the lot into a few CPP macros and reduce LoC.
This also prepares for easy addition of new ops.
Signed-off-by: Peter Zijlstra <peterz@infradead.org>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Kirill Tkhai <tkhai@yandex.ru>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: sparclinux@vger.kernel.org
Link: http://lkml.kernel.org/r/20140508135852.825281379@infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
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| 193d2aadc0ff5c687f6f0d5ef1d38c86ab511a14 |
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10-Nov-2012 |
David S. Miller <davem@davemloft.net> |
sparc: Support atomic64_dec_if_positive properly.
Sparc32 already supported it, as a consequence of using the
generic atomic64 implementation. And the sparc64 implementation
is rather trivial.
This allows us to set ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE for all
of sparc, and avoid the annoying warning from lib/atomic64_test.c
Signed-off-by: David S. Miller <davem@davemloft.net>
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| 8695c37d06721c581385725eb80ba4e6d6bdf73f |
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12-May-2012 |
David S. Miller <davem@davemloft.net> |
sparc: Convert some assembler over to linakge.h's ENTRY/ENDPROC
Use those, instead of doing it all by hand.
Signed-off-by: David S. Miller <davem@davemloft.net>
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| 0f58189d4a3ca96d7959501ecb203177efdbc5bd |
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19-Aug-2010 |
David S. Miller <davem@davemloft.net> |
sparc64: Make lock backoff really a NOP on UP builds.
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>
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| 6ec274750c99448c3412bbc10c97ce0c993f8a4e |
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18-Aug-2010 |
Mikulas Patocka <mpatocka@redhat.com> |
sparc64: simple microoptimizations for atomic functions
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>
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| 478b8fecda511942404ac232897a718cecd13e48 |
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03-Dec-2008 |
Sam Ravnborg <sam@ravnborg.org> |
sparc,sparc64: unify lib/
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>
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