| Message ID | b40cb303a22f75b85ec0c8d45160e983baff9299.1606412433.git.naveen.n.rao@linux.vnet.ibm.com (mailing list archive) |
|---|---|
| State | RFC |
| Headers | show |
| Series | powerpc64: Add support for ftrace direct calls | expand |
| Context | Check | Description |
|---|---|---|
| snowpatch_ozlabs/apply_patch | success | Successfully applied on branch powerpc/merge (4c202167192a77481310a3cacae9f12618b92216) |
| snowpatch_ozlabs/checkpatch | success | total: 0 errors, 0 warnings, 0 checks, 7 lines checked |
| snowpatch_ozlabs/needsstable | success | Patch has no Fixes tags |
diff --git a/arch/powerpc/kernel/trace/ftrace_64_mprofile.S b/arch/powerpc/kernel/trace/ftrace_64_mprofile.S index bbe871b47ade58..c5602e9b07faa3 100644 --- a/arch/powerpc/kernel/trace/ftrace_64_mprofile.S +++ b/arch/powerpc/kernel/trace/ftrace_64_mprofile.S @@ -310,7 +310,5 @@ _GLOBAL(ftrace_graph_caller) ld r2, 24(r1) addi r1, r1, SWITCH_FRAME_SIZE - mflr r0 - std r0, LRSAVE(r1) bctr #endif /* CONFIG_FUNCTION_GRAPH_TRACER */
In -mprofile-kernel variant of ftrace_graph_caller(), we save the optionally-updated LR address into the stack save area at the end. This is likely an offshoot of the initial -mprofile-kernel implementation in gcc emitting the same as part of the -mprofile-kernel instruction sequence. However, this is not required. Drop it. Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> --- arch/powerpc/kernel/trace/ftrace_64_mprofile.S | 2 -- 1 file changed, 2 deletions(-)