AcoSail/kernel_optimize_test
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[SPARC]: Don't zero out tail during copy_from_user_inatomic().

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Actually, since we use the same code for all the copying
types in and out of userspace, we check at runtime whether
preemption is disabled.

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2006-09-27 19:43:02 -07:00
parent d6c641026d
commit 3a1d5c84ed
1 changed files with 4 additions and 0 deletions
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4
arch/sparc/lib/copy_user.S
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@ -14,6 +14,7 @@
#include <asm/ptrace.h> #include <asm/ptrace.h>
#include <asm/asmmacro.h> #include <asm/asmmacro.h>
#include <asm/page.h> #include <asm/page.h>
#include <asm/thread_info.h>
/* Work around cpp -rob */ /* Work around cpp -rob */
#define ALLOC #alloc #define ALLOC #alloc
@ -366,6 +367,9 @@ fixupretl:
blu 1f blu 1f
cmp %o1, %g1 cmp %o1, %g1
bgeu 1f bgeu 1f
ld [%g6 + TI_PREEMPT], %g1
cmp %g1, 0
bne 1f
nop nop
save %sp, -64, %sp save %sp, -64, %sp
mov %i0, %o0 mov %i0, %o0