kernel.git/arch/parisc/include/asm/system.h, branch linux-2.6.34.yHosts the 0x221E linux distro kernel.
https://git.0xinfinity.dev/distro/kernel.git/atom?h=linux-2.6.34.y2010-03-06T22:54:10Zparisc: drop unnecessary cast in __ldcw_align() macro2010-03-06T22:54:10ZHelge Deller2010-02-02T19:06:23Zurn:sha1:1d747c7e7b754cacb9bc8d31854bdc3a58d70597
__ldcw_align() can directly access the slock member of struct arch_spinlock_t
instead of using an ugly cast.
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
parisc: fix ldcw inline assembler2009-07-03T03:34:07ZHelge Deller2009-04-30T21:39:45Zurn:sha1:7d17e2763129ea307702fcdc91f6e9d114b65c2d
There are two reasons to expose the memory *a in the asm:
1) To prevent the compiler from discarding a preceeding write to *a, and
2) to prevent it from caching *a in a register over the asm.
The change has had a few days testing with a SMP build of 2.6.22.19
running on a rp3440.
This patch is about the correctness of the __ldcw() macro itself.
The use of the macro should be confined to small inline functions
to try to limit the effect of clobbering memory on GCC's optimization
of loads and stores.
Signed-off-by: Dave Anglin <dave.anglin@nrc-cnrc.gc.ca>
Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Kyle McMartin <kyle@mcmartin.ca>
parisc: move include/asm-parisc to arch/parisc/include/asm2008-10-10T16:32:29ZKyle McMartin2008-07-29T03:02:13Zurn:sha1:deae26bf6a10e47983606f5df080b91e97650ead