fix: kprobes: Use rethook for kretprobe if possible (v5.18)
authorMichael Jeanson <mjeanson@efficios.com>
Mon, 4 Apr 2022 19:02:10 +0000 (15:02 -0400)
committerMathieu Desnoyers <mathieu.desnoyers@efficios.com>
Thu, 7 Apr 2022 19:18:51 +0000 (15:18 -0400)
commit3c46ddc134621dba65030263aa321dd6bdae3ba3
treeda173eb4f10ea6c5eca4b8d738b1fb58a7db0f03
parent369d82bb1746447514c877088d7c5fd0f39140f8
fix: kprobes: Use rethook for kretprobe if possible (v5.18)

See upstream commit :

  commit 73f9b911faa74ac5107879de05c9489c419f41bb
  Author: Masami Hiramatsu <mhiramat@kernel.org>
  Date:   Sat Mar 26 11:27:05 2022 +0900

    kprobes: Use rethook for kretprobe if possible

    Use rethook for kretprobe function return hooking if the arch sets
    CONFIG_HAVE_RETHOOK=y. In this case, CONFIG_KRETPROBE_ON_RETHOOK is
    set to 'y' automatically, and the kretprobe internal data fields
    switches to use rethook. If not, it continues to use kretprobe
    specific function return hooks.

Change-Id: I2b7670dc04e4769c1e3c372582ad2f555f6d7a66
Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
include/wrapper/kprobes.h
src/probes/lttng-kretprobes.c
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