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| author | Michael Ellerman <mpe@ellerman.id.au> | 2015-01-14 14:47:56 +1100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2015-02-02 14:51:32 +1100 |
| commit | a4bcbe6a41adcaa5e7f1830a7c1da8691d9d2b1d (patch) | |
| tree | 6f1d9902db4dd2641f9a4848432e5380bd57f07d /arch/powerpc/kernel/entry_64.S | |
| parent | 4c3b21686111e0ac6018469dacbc5549f9915cf8 (diff) | |
| download | linux-a4bcbe6a41adcaa5e7f1830a7c1da8691d9d2b1d.tar.gz | |
powerpc: Remove old compile time disabled syscall tracing code
We have code to do syscall tracing which is disabled at compile time by
default. It's not been touched since the dawn of time (ie. v2.6.12).
There are now better ways to do syscall tracing, ie. using the
raw_syscall, or syscall tracepoints.
For the specific case of tracing syscalls at boot on a system that
doesn't get to userspace, you can boot with:
trace_event=syscalls tp_printk=on
Which will trace syscalls from boot, and echo all output to the console.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/kernel/entry_64.S')
| -rw-r--r-- | arch/powerpc/kernel/entry_64.S | 13 |
1 files changed, 0 insertions, 13 deletions
diff --git a/arch/powerpc/kernel/entry_64.S b/arch/powerpc/kernel/entry_64.S index fefaa1485bd31..d180caf2d6de7 100644 --- a/arch/powerpc/kernel/entry_64.S +++ b/arch/powerpc/kernel/entry_64.S @@ -49,8 +49,6 @@ exception_marker: .section ".text" .align 7 -#undef SHOW_SYSCALLS - .globl system_call_common system_call_common: andi. r10,r12,MSR_PR @@ -142,13 +140,6 @@ END_FW_FTR_SECTION_IFSET(FW_FEATURE_SPLPAR) li r10,1 std r10,SOFTE(r1) -#ifdef SHOW_SYSCALLS - bl do_show_syscall - REST_GPR(0,r1) - REST_4GPRS(3,r1) - REST_2GPRS(7,r1) - addi r9,r1,STACK_FRAME_OVERHEAD -#endif CURRENT_THREAD_INFO(r11, r1) ld r10,TI_FLAGS(r11) andi. r11,r10,_TIF_SYSCALL_DOTRACE @@ -180,10 +171,6 @@ system_call: /* label this so stack traces look sane */ .Lsyscall_exit: std r3,RESULT(r1) -#ifdef SHOW_SYSCALLS - bl do_show_syscall_exit - ld r3,RESULT(r1) -#endif CURRENT_THREAD_INFO(r12, r1) ld r8,_MSR(r1) |