linux-kernel - [PATCH 0/3] HID: bpf: some fixes for pre-loading HID-BPF

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Message-Id: <20240419-hid_bpf_lazy_skel-v1-0-9210bcd4b61c@kernel.org>
Date: Fri, 19 Apr 2024 16:47:50 +0200
From: Benjamin Tissoires <bentiss@...nel.org>
To: Jiri Kosina <jikos@...nel.org>, 
 Benjamin Tissoires <benjamin.tissoires@...hat.com>
Cc: linux-input@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Benjamin Tissoires <bentiss@...nel.org>, stable@...r.kernel.org
Subject: [PATCH 0/3] HID: bpf: some fixes for pre-loading HID-BPF

As I am working on the next functionalities of HID-BPF, I realized that
I had a few issues while preloading the skeleton at boot.

None of the errors are terrible as they are not inducing a kernel crash,
so it's not super urgent IMO.

Regarding the last one, I'm not sure what makes RHEL behave slightly
different than upstream. But I am not sure also that the code matches
upstream everywhere, so lazy loading it seems like a sensible idea.

Furthermore, that also means that the code will not be available until
requested by user space, which fits well in the whole idea of HID-BPF:
if the user doesn't want it, then it shouldn't be it.

Signed-off-by: Benjamin Tissoires <bentiss@...nel.org>
---
Benjamin Tissoires (3):
      HID: bpf: fix a comment in a define
      HID: bpf: fix return value of entrypoints_*__attach()
      HID: bpf: lazy load the hid_tail_call entrypoint

 drivers/hid/bpf/hid_bpf_dispatch.c  |  6 ------
 drivers/hid/bpf/hid_bpf_jmp_table.c | 17 ++++++++++++-----
 2 files changed, 12 insertions(+), 11 deletions(-)
---
base-commit: b912cf042072e12e93faa874265b30cc0aa521b9
change-id: 20240419-hid_bpf_lazy_skel-ab0d674cb49b

Best regards,
-- 
Benjamin Tissoires <bentiss@...nel.org>