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Subject: Re: [PATCH] livepatch: introduce klp_func called interface
From: zhang warden <zhangwarden@gmail.com>
In-Reply-To: <930d7361-64e9-a0fc-eb04-79d9bf9267fa@redhat.com>
Date: Fri, 7 Jun 2024 10:26:49 +0800
Cc: Miroslav Benes <mbenes@suse.cz>,
 Josh Poimboeuf <jpoimboe@kernel.org>,
 Jiri Kosina <jikos@kernel.org>,
 Petr Mladek <pmladek@suse.com>,
 live-patching@vger.kernel.org,
 linux-kernel@vger.kernel.org
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References: <20240520005826.17281-1-zhangwarden@gmail.com>
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 <alpine.LSU.2.21.2405210823590.4805@pobox.suse.cz>
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To: Joe Lawrence <joe.lawrence@redhat.com>


> On Jun 6, 2024, at 23:01, Joe Lawrence <joe.lawrence@redhat.com> =
wrote:
>=20
> Hi Wardenjohn,
>=20
> To follow up, Red Hat kpatch QE pointed me toward this test:
>=20
> =
https://gitlab.com/redhat/centos-stream/tests/kernel/kernel-tests/-/tree/m=
ain/general/kpatch/kpatch-trace?ref_type=3Dheads
>=20
> which reports a few interesting things via systemd service and ftrace:
>=20
> - Patched functions
> - Traced functions
> - Code that was modified, but didn't run
> - Other code that ftrace saw, but is not listed in the sysfs directory
>=20
> The code looks to be built on top of the same basic ftrace commands =
that
> I sent the other day.  You may be able to reuse/copy/etc bits from the
> scripts if they are handy.
>=20
> --
> Joe
>=20

Thank you so much, you really helped me, Joe!

I will try to learn the script and make it suitable for our system.

Again, thank you, Joe!

Regards,
Wardenjohn