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| author |   Naveen N Rao <naveen@kernel.org> | 2024-10-30 12:38:35 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2024-10-31 11:00:52 +1100 |
| commit | be87d713eaddf0421ccd61cc060c4c29bc36fc9b (patch) | |
| tree | 7328fca22cf32ab040555d974968a79f6465f7d9 /tools/perf/scripts/python/call-graph-from-postgresql.py | |
| parent | powerpc/trace: Account for -fpatchable-function-entry support by toolchain (diff) | |
| download | wireguard-linux-be87d713eaddf0421ccd61cc060c4c29bc36fc9b.tar.xz wireguard-linux-be87d713eaddf0421ccd61cc060c4c29bc36fc9b.zip | |
powerpc/kprobes: Use ftrace to determine if a probe is at function entry
Rather than hard-coding the offset into a function to be used to
determine if a kprobe is at function entry, use ftrace_location() to
determine the ftrace location within the function and categorize all
instructions till that offset to be function entry.
For functions that cannot be traced, we fall back to using a fixed
offset of 8 (two instructions) to categorize a probe as being at
function entry for 64-bit elfv2, unless we are using pcrel.
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Naveen N Rao <naveen@kernel.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://patch.msgid.link/20241030070850.1361304-3-hbathini@linux.ibm.com
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-postgresql.py')
0 files changed, 0 insertions, 0 deletions