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| author | David S. Miller <davem@sunset.davemloft.net> | 2006-02-05 21:59:03 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-03-20 01:11:49 -0800 |
| commit | 314981ac7177a933319e3c071a5cf0a579205e6e (patch) | |
| tree | 11895da391ba91195d6d7a67debaa32a28c1215e /include/asm-sparc64 | |
| parent | 936f482af1743141d637483ec10eb881537c26dc (diff) | |
| download | op-kernel-dev-314981ac7177a933319e3c071a5cf0a579205e6e.zip op-kernel-dev-314981ac7177a933319e3c071a5cf0a579205e6e.tar.gz | |
[SPARC64]: Kill all %pstate changes in context switch code.
They are totally unnecessary because:
1) Interrupts are already disabled when switch_to()
runs.
2) We don't use hard-coded alternate globals any longer.
This found a case in rtrap, which still assumed alternate
global %g6 was current_thread_info(), and that is fixed
by this changeset as well.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/asm-sparc64')
| -rw-r--r-- | include/asm-sparc64/system.h | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/include/asm-sparc64/system.h b/include/asm-sparc64/system.h index 26c0807..a18ec87 100644 --- a/include/asm-sparc64/system.h +++ b/include/asm-sparc64/system.h @@ -213,7 +213,6 @@ do { if (test_thread_flag(TIF_PERFCTR)) { \ task_thread_info(next); \ __asm__ __volatile__( \ "mov %%g4, %%g7\n\t" \ - "wrpr %%g0, 0x95, %%pstate\n\t" \ "stx %%i6, [%%sp + 2047 + 0x70]\n\t" \ "stx %%i7, [%%sp + 2047 + 0x78]\n\t" \ "rdpr %%wstate, %%o5\n\t" \ @@ -227,14 +226,10 @@ do { if (test_thread_flag(TIF_PERFCTR)) { \ "ldx [%%g6 + %3], %%o6\n\t" \ "ldub [%%g6 + %2], %%o5\n\t" \ "ldub [%%g6 + %4], %%o7\n\t" \ - "mov %%g6, %%l2\n\t" \ "wrpr %%o5, 0x0, %%wstate\n\t" \ "ldx [%%sp + 2047 + 0x70], %%i6\n\t" \ "ldx [%%sp + 2047 + 0x78], %%i7\n\t" \ - "wrpr %%g0, 0x94, %%pstate\n\t" \ - "mov %%l2, %%g6\n\t" \ "ldx [%%g6 + %6], %%g4\n\t" \ - "wrpr %%g0, 0x96, %%pstate\n\t" \ "brz,pt %%o7, 1f\n\t" \ " mov %%g7, %0\n\t" \ "b,a ret_from_syscall\n\t" \ |
