diff options
| author | Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> | 2019-09-05 23:50:29 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-09-18 12:24:55 +1000 |
| commit | 370011a27028d6f05e598ed6211a0ca2dc0213f7 (patch) | |
| tree | 9795c67704e2d5d70595e4e61e5517393d40f644 /arch/powerpc/include/asm/asm-prototypes.h | |
| parent | a3db31ff6ce31f5a544a66b61613a098029031cc (diff) | |
powerpc/ftrace: Enable HAVE_FUNCTION_GRAPH_RET_ADDR_PTR
This associates entries in the ftrace_ret_stack with corresponding stack
frames, enabling more robust stack unwinding. Also update the only user
of ftrace_graph_ret_addr() to pass the stack pointer.
Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/0224f2d0971b069c678e2ff678cfc2cd1e114cfe.1567707399.git.naveen.n.rao@linux.vnet.ibm.com
Diffstat (limited to 'arch/powerpc/include/asm/asm-prototypes.h')
| -rw-r--r-- | arch/powerpc/include/asm/asm-prototypes.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/include/asm/asm-prototypes.h b/arch/powerpc/include/asm/asm-prototypes.h index 49196d35e3bb..8561498e653c 100644 --- a/arch/powerpc/include/asm/asm-prototypes.h +++ b/arch/powerpc/include/asm/asm-prototypes.h @@ -134,7 +134,8 @@ extern int __ucmpdi2(u64, u64); /* tracing */ void _mcount(void); -unsigned long prepare_ftrace_return(unsigned long parent, unsigned long ip); +unsigned long prepare_ftrace_return(unsigned long parent, unsigned long ip, + unsigned long sp); void pnv_power9_force_smt4_catch(void); void pnv_power9_force_smt4_release(void); |