linux-kernel - Re: [PATCH] bpf: Remove tracing program restriction on map types

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Message-ID: <2025041517-semicolon-aloft-9910@gregkh>
Date: Tue, 15 Apr 2025 15:19:25 +0200
From: Greg KH <gregkh@...uxfoundation.org>
To: Devaansh Kumar <devaanshk840@...il.com>
Cc: sashal@...nel.org, stable@...r.kernel.org, ast@...nel.org,
	daniel@...earbox.net, bpf@...r.kernel.org,
	linux-kernel@...r.kernel.org, skhan@...uxfoundation.org,
	linux-kernel-mentees@...ts.linuxfoundation.org,
	Kumar Kartikeya Dwivedi <memxor@...il.com>,
	Andrii Nakryiko <andrii@...nel.org>
Subject: Re: [PATCH] bpf: Remove tracing program restriction on map types

On Tue, Apr 15, 2025 at 06:39:07PM +0530, Devaansh Kumar wrote:
> [ Upstream commit 96da3f7d489d11b43e7c1af90d876b9a2492cca8 ]
> 
> The hash map is now fully converted to bpf_mem_alloc. Its implementation is not
> allocating synchronously and not calling call_rcu() directly. It's now safe to
> use non-preallocated hash maps in all types of tracing programs including
> BPF_PROG_TYPE_PERF_EVENT that runs out of NMI context.
> 
> Signed-off-by: Alexei Starovoitov <ast@...nel.org>
> Signed-off-by: Daniel Borkmann <daniel@...earbox.net>
> Acked-by: Kumar Kartikeya Dwivedi <memxor@...il.com>
> Acked-by: Andrii Nakryiko <andrii@...nel.org>
> Link: https://lore.kernel.org/bpf/20220902211058.60789-13-alexei.starovoitov@gmail.com
> Signed-off-by: Devaansh Kumar <devaanshk840@...il.com>
> ---
>  kernel/bpf/verifier.c | 29 -----------------------------
>  1 file changed, 29 deletions(-)

what kernel tree(s) is this for?