diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2012-05-20 11:59:03 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2012-10-01 09:58:14 -0400 |
| commit | 64482bd8ef1700e98d96fb6e240c501d68c8371c (patch) | |
| tree | 243bf1ad99b4d1b640d5623bdaf37a551a1b276d /arch/parisc/kernel | |
| parent | e3b880c6ee55e8858a75e3dcf6c3dda04d5e3605 (diff) | |
parisc: decide whether to go to slow path (tracesys) based on thread flags
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'arch/parisc/kernel')
| -rw-r--r-- | arch/parisc/kernel/syscall.S | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/parisc/kernel/syscall.S b/arch/parisc/kernel/syscall.S index 54a9cbfc08ad..86742df0b194 100644 --- a/arch/parisc/kernel/syscall.S +++ b/arch/parisc/kernel/syscall.S | |||
| @@ -180,9 +180,10 @@ linux_gateway_entry: | |||
| 180 | 180 | ||
| 181 | /* Are we being ptraced? */ | 181 | /* Are we being ptraced? */ |
| 182 | mfctl %cr30, %r1 | 182 | mfctl %cr30, %r1 |
| 183 | LDREG TI_TASK(%r1),%r1 | 183 | LDREG TI_FLAGS(%r1),%r1 |
| 184 | ldw TASK_PTRACE(%r1), %r1 | 184 | ldi _TIF_SYSCALL_TRACE_MASK, %r19 |
| 185 | bb,<,n %r1,31,.Ltracesys | 185 | and,COND(=) %r1, %r19, %r0 |
| 186 | b,n .Ltracesys | ||
| 186 | 187 | ||
| 187 | /* Note! We cannot use the syscall table that is mapped | 188 | /* Note! We cannot use the syscall table that is mapped |
| 188 | nearby since the gateway page is mapped execute-only. */ | 189 | nearby since the gateway page is mapped execute-only. */ |