[PATCH 0/3] ftrace: add sample code with dynamic ftrace_ops

From: Mark Rutland
Date: Thu Nov 03 2022 - 13:10:54 EST


This series adds sample code to manipulate dynamic ftrace_ops, which
I've been using to benchmark/test some changes I've been making in this
area for arm64.

In the process of writing that I spotted a couple of minor issues,
addressed by the first two patches.

I'm not sure whether this should be a sample or something under lib/;
I'm happy to change that if folk have strong opinions.

Thanks;
Mark.

Mark Rutland (3):
ftrace: maintain samples/ftrace
ftrace: export ftrace_free_filter() to modules
ftrace: add sample with custom ops

MAINTAINERS | 1 +
kernel/trace/ftrace.c | 23 +-
samples/Kconfig | 7 +
samples/Makefile | 1 +
samples/ftrace/Makefile | 1 +
samples/ftrace/ftrace-direct-multi-modify.c | 1 +
samples/ftrace/ftrace-direct-multi.c | 1 +
samples/ftrace/ftrace-ops.c | 252 ++++++++++++++++++++
8 files changed, 286 insertions(+), 1 deletion(-)
create mode 100644 samples/ftrace/ftrace-ops.c

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2.30.2