diff options
author | David Gibson <david@gibson.dropbear.id.au> | 2005-10-21 15:45:50 +1000 |
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committer | Paul Mackerras <paulus@samba.org> | 2005-10-21 22:47:23 +1000 |
commit | 6cb7bfebb145af5ea1d052512a2ae7ff07a47202 (patch) | |
tree | 677ce52e6ad423f8a652ec3e16f98c3ad33fcc54 /include/asm-ppc64/sparsemem.h | |
parent | b0faa28493f97b55b36ff5b1a2b8c81bf253a460 (diff) |
[PATCH] powerpc: Merge thread_info.h
Merge ppc32 and ppc64 versions of thread_info.h. They were pretty
similar already, the chief changes are:
- Instead of inline asm to implement current_thread_info(),
which needs to be different for ppc32 and ppc64, we use C with an
asm("r1") register variable. gcc turns it into the same asm as we
used to have for both platforms.
- We replace ppc32's 'local_flags' with the ppc64
'syscall_noerror' field. The noerror flag was in fact the only thing
in the local_flags field anyway, so the ppc64 approach is simpler, and
means we only need a load-immediate/store instead of load/mask/store
when clearing the flag.
- In readiness for 64k pages, when THREAD_SIZE will be less
than a page, ppc64 used kmalloc() rather than get_free_pages() to
allocate the kernel stack. With this patch we do the same for ppc32,
since there's no strong reason not to.
- For ppc64, we no longer export THREAD_SHIFT and THREAD_SIZE
via asm-offsets, thread_info.h can now be safely included in asm, as
on ppc32.
Built and booted on G4 Powerbook (ARCH=ppc and ARCH=powerpc) and
Power5 (ARCH=ppc64 and ARCH=powerpc).
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-ppc64/sparsemem.h')
0 files changed, 0 insertions, 0 deletions