linux-kernel - Re: [PATCH bpf-next] selftests/bpf: Return -1 from get_preempt

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Message-ID: <9d845ebd-2d1f-4f98-9284-a1714676d33e@linux.dev>
Date: Thu, 29 Jan 2026 08:03:23 -0800
From: Yonghong Song <yonghong.song@...ux.dev>
To: Saket Kumar Bhaskar <skb99@...ux.ibm.com>, linux-kernel@...r.kernel.org,
 linux-kselftest@...r.kernel.org, bpf@...r.kernel.org
Cc: hbathini@...ux.ibm.com, sachinpb@...ux.ibm.com, venkat88@...ux.ibm.com,
 andrii@...nel.org, eddyz87@...il.com, ast@...nel.org, daniel@...earbox.net,
 martin.lau@...ux.dev, song@...nel.org, john.fastabend@...il.com,
 kpsingh@...nel.org, sdf@...ichev.me, haoluo@...gle.com, jolsa@...nel.org
Subject: Re: [PATCH bpf-next] selftests/bpf: Return -1 from
 get_preempt_count() for unsupported architecture



On 1/28/26 9:09 PM, Saket Kumar Bhaskar wrote:
> Make get_preempt_count() to return -1 for unsupported
> architectures instead of 0, so callers can distinguish not supported
> from a valid preempt_count of 0.
>
> Signed-off-by: Saket Kumar Bhaskar <skb99@...ux.ibm.com>

LGTM.

Acked-by: Yonghong Song <yonghong.song@...ux.dev>