kernel.h: drop hex.h and update all hex.h users

Remove <linux/hex.h> from <linux/kernel.h> and update all users/callers of
hex.h interfaces to directly #include <linux/hex.h> as part of the process
of putting kernel.h on a diet.

Removing hex.h from kernel.h means that 36K C source files don't have to
pay the price of parsing hex.h for the roughly 120 C source files that
need it.

This change has been build-tested with allmodconfig on most ARCHes.  Also,
all users/callers of <linux/hex.h> in the entire source tree have been
updated if needed (if not already #included).

Link: https://lkml.kernel.org/r/20251215005206.2362276-1-rdunlap@infradead.org
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Yury Norov (NVIDIA) <yury.norov@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

8 files changed, 8 insertions, 0 deletions

diff --git a/security/integrity/evm/evm_crypto.c b/security/integrity/evm/evm_crypto.c
index a5e730ffda57..465a32f59c11 100644
--- a/security/integrity/evm/evm_crypto.c
+++ b/security/integrity/evm/evm_crypto.c
@@ -13,6 +13,7 @@
 #define pr_fmt(fmt) "EVM: "fmt
 
 #include <linux/export.h>
+#include <linux/hex.h>
 #include <linux/crypto.h>
 #include <linux/xattr.h>
 #include <linux/evm.h>
diff --git a/security/integrity/ima/ima_api.c b/security/integrity/ima/ima_api.c
index c35ea613c9f8..c6d1c7be8a3e 100644
--- a/security/integrity/ima/ima_api.c
+++ b/security/integrity/ima/ima_api.c
@@ -11,6 +11,7 @@
 #include <linux/slab.h>
 #include <linux/file.h>
 #include <linux/fs.h>
+#include <linux/hex.h>
 #include <linux/xattr.h>
 #include <linux/evm.h>
 #include <linux/fsverity.h>
diff --git a/security/ipe/digest.c b/security/ipe/digest.c
index 493716370570..5006366837ba 100644
--- a/security/ipe/digest.c
+++ b/security/ipe/digest.c
@@ -3,6 +3,7 @@
  * Copyright (C) 2020-2024 Microsoft Corporation. All rights reserved.
  */
 
+#include <linux/hex.h>
 #include "digest.h"
 
 /**
diff --git a/security/keys/encrypted-keys/encrypted.c b/security/keys/encrypted-keys/encrypted.c
index 596e7a30bd3c..56b531587a1e 100644
--- a/security/keys/encrypted-keys/encrypted.c
+++ b/security/keys/encrypted-keys/encrypted.c
@@ -13,6 +13,7 @@
 
 #include <linux/uaccess.h>
 #include <linux/module.h>
+#include <linux/hex.h>
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/parser.h>
diff --git a/security/keys/trusted-keys/trusted_core.c b/security/keys/trusted-keys/trusted_core.c
index b1680ee53f86..16168ba5c83e 100644
--- a/security/keys/trusted-keys/trusted_core.c
+++ b/security/keys/trusted-keys/trusted_core.c
@@ -14,6 +14,7 @@
 #include <keys/trusted_tpm.h>
 #include <linux/capability.h>
 #include <linux/err.h>
+#include <linux/hex.h>
 #include <linux/init.h>
 #include <linux/key-type.h>
 #include <linux/module.h>
diff --git a/security/keys/trusted-keys/trusted_tpm1.c b/security/keys/trusted-keys/trusted_tpm1.c
index 636acb66a4f6..c865c97aa1b4 100644
--- a/security/keys/trusted-keys/trusted_tpm1.c
+++ b/security/keys/trusted-keys/trusted_tpm1.c
@@ -9,6 +9,7 @@
 #include <crypto/hash_info.h>
 #include <crypto/sha1.h>
 #include <crypto/utils.h>
+#include <linux/hex.h>
 #include <linux/init.h>
 #include <linux/slab.h>
 #include <linux/parser.h>
diff --git a/security/loadpin/loadpin.c b/security/loadpin/loadpin.c
index 273ffbd6defe..019840006096 100644
--- a/security/loadpin/loadpin.c
+++ b/security/loadpin/loadpin.c
@@ -11,6 +11,7 @@
 
 #include <linux/module.h>
 #include <linux/fs.h>
+#include <linux/hex.h>
 #include <linux/kernel_read_file.h>
 #include <linux/lsm_hooks.h>
 #include <linux/mount.h>
diff --git a/security/selinux/selinuxfs.c b/security/selinux/selinuxfs.c
index 896acad1f5f7..4d58c7ad1a23 100644
--- a/security/selinux/selinuxfs.c
+++ b/security/selinux/selinuxfs.c
@@ -18,6 +18,7 @@
 #include <linux/vmalloc.h>
 #include <linux/fs.h>
 #include <linux/fs_context.h>
+#include <linux/hex.h>
 #include <linux/mount.h>
 #include <linux/mutex.h>
 #include <linux/namei.h>