powerpc/kernel: Make syscall_exit a local label

Currently when we back trace something that is in a syscall we see
something like this:

[c000000000000000] [c000000000000000] SyS_read+0x6c/0x110
[c000000000000000] [c000000000000000] syscall_exit+0x0/0x98

Although it's entirely correct, seeing syscall_exit at the bottom can be
confusing - we were exiting from a syscall and then called SyS_read() ?

If we instead change syscall_exit to be a local label we get something
more intuitive:

[c0000001fa46fde0] [c00000000026719c] SyS_read+0x6c/0x110
[c0000001fa46fe30] [c000000000009264] system_call+0x38/0xd0

ie. we were handling a system call, and it was SyS_read().

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
(backported from commit 4c3b21686111e0ac6018469dacbc5549f9915cf8)
Signed-off-by: Bogdan Purcareata <bogdan.purcareata@freescale.com>
Change-Id: I2f04a5c9db260ffc36b95ce6ee48c50535053f7e
Reviewed-on: http://git.am.freescale.net:8181/33028
Reviewed-by: Scott Wood <scottwood@freescale.com>
Tested-by: Honghua Yin <Hong-Hua.Yin@freescale.com>
Reviewed-by: Honghua Yin <Hong-Hua.Yin@freescale.com>

0 files changed, 0 insertions, 0 deletions