Since commit 603b44162325 ("bpf: Update the bpf_prog_calc_tag to use
SHA256") made kernel/bpf/core.c use only SHA-256 and not SHA-1, the
header <crypto/sha1.h> no longer needs to be included.  Remove the
inclusion so that it no longer unnecessarily comes up in searches for
which kernel code is still using the obsolete SHA-1 algorithm.

Signed-off-by: Eric Biggers <ebiggers@kernel.org>
---
 kernel/bpf/core.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/kernel/bpf/core.c b/kernel/bpf/core.c
index 3ece2da55625c..f11ab6f354e2e 100644
--- a/kernel/bpf/core.c
+++ b/kernel/bpf/core.c
@@ -16,11 +16,10 @@
  * Andi Kleen - Fix a few bad bugs and races.
  * Kris Katterjohn - Added many additional checks in bpf_check_classic()
  */
 
 #include <uapi/linux/btf.h>
-#include <crypto/sha1.h>
 #include <linux/filter.h>
 #include <linux/skbuff.h>
 #include <linux/vmalloc.h>
 #include <linux/prandom.h>
 #include <linux/bpf.h>

base-commit: 1c9982b4961334c1edb0745a04cabd34bc2de675
-- 
2.53.0

On Sat, Mar 14, 2026 at 01:47:34PM -0700, Eric Biggers wrote:
> Since commit 603b44162325 ("bpf: Update the bpf_prog_calc_tag to use
> SHA256") made kernel/bpf/core.c use only SHA-256 and not SHA-1, the
> header <crypto/sha1.h> no longer needs to be included.  Remove the
> inclusion so that it no longer unnecessarily comes up in searches for
> which kernel code is still using the obsolete SHA-1 algorithm.
> 
> Signed-off-by: Eric Biggers <ebiggers@kernel.org>
> ---
>  kernel/bpf/core.c | 1 -
>  1 file changed, 1 deletion(-)

I missed include/linux/filter.h which is related.  I'll send a v2.

- Eric