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linux-sg2042
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[PATCH] x86_64: Don't do syscall exit tracing twice 

int_ret_from_syscall already does syscall exit tracing, so
no need to do it again in the caller.

This caused problems for UML and some other special programs doing
syscall interception.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Andi Kleen 2006-05-30 22:48:03 +02:00 committed by Linus Torvalds
parent 7ca97c6131
commit 822ff019f7
1 changed files with 1 additions and 6 deletions
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7
arch/x86_64/kernel/entry.S
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@ -281,12 +281,7 @@ tracesys:
ja 1f
movq %r10,%rcx /* fixup for C */
call *sys_call_table(,%rax,8)
movq %rax,RAX-ARGOFFSET(%rsp)
1: SAVE_REST
movq %rsp,%rdi
call syscall_trace_leave
RESTORE_TOP_OF_STACK %rbx
RESTORE_REST
1: movq %rax,RAX-ARGOFFSET(%rsp)
/* Use IRET because user could have changed frame */
jmp int_ret_from_sys_call
CFI_ENDPROC