From: Ahmed S. Darwish <darwi@linutronix.de>
Date: Fri, 27 Mar 2026 02:15:20 +0000 (+0100)
Subject: x86/cpuid: Rename cpuid_leaf()/cpuid_subleaf() APIs
X-Git-Url: http://git.ipfire.org/gitweb/index.cgi?a=commitdiff_plain;h=5fbe09ebb4dc7e0fa54f7a26d6be72a33d7e6035;p=thirdparty%2Fkernel%2Flinux.git

x86/cpuid: Rename cpuid_leaf()/cpuid_subleaf() APIs

A new CPUID model will be added where its APIs will be designated as the
official CPUID API.  Free the cpuid_leaf() and cpuid_subleaf() function
names for that API.  Rename them accordingly to cpuid_read() and
cpuid_read_subleaf().

For kernel/cpuid.c, rename its local file operations read function from
cpuid_read() to cpuid_read_f() so that it does not conflict with the new
API.

No functional change.

Signed-off-by: Ahmed S. Darwish <darwi@linutronix.de>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/20260327021645.555257-1-darwi@linutronix.de
---

diff --git a/arch/x86/include/asm/cpuid/api.h b/arch/x86/include/asm/cpuid/api.h
index 44fa82e1267ce..2b9750cc8a757 100644
--- a/arch/x86/include/asm/cpuid/api.h
+++ b/arch/x86/include/asm/cpuid/api.h
@@ -131,12 +131,12 @@ static inline void __cpuid_read(u32 leaf, u32 subleaf, u32 *regs)
 	__cpuid(regs + CPUID_EAX, regs + CPUID_EBX, regs + CPUID_ECX, regs + CPUID_EDX);
 }
 
-#define cpuid_subleaf(leaf, subleaf, regs) {		\
+#define cpuid_read_subleaf(leaf, subleaf, regs) {	\
 	static_assert(sizeof(*(regs)) == 16);		\
 	__cpuid_read(leaf, subleaf, (u32 *)(regs));	\
 }
 
-#define cpuid_leaf(leaf, regs) {			\
+#define cpuid_read(leaf, regs) {			\
 	static_assert(sizeof(*(regs)) == 16);		\
 	__cpuid_read(leaf, 0, (u32 *)(regs));		\
 }
@@ -228,7 +228,7 @@ static inline u32 cpuid_base_hypervisor(const char *sig, u32 leaves)
  */
 static inline void cpuid_leaf_0x2(union leaf_0x2_regs *regs)
 {
-	cpuid_leaf(0x2, regs);
+	cpuid_read(0x2, regs);
 
 	/*
 	 * All Intel CPUs must report an iteration count of 1.	In case
diff --git a/arch/x86/kernel/cpu/topology_amd.c b/arch/x86/kernel/cpu/topology_amd.c
index cc103c85b96d8..da080d732e107 100644
--- a/arch/x86/kernel/cpu/topology_amd.c
+++ b/arch/x86/kernel/cpu/topology_amd.c
@@ -80,7 +80,7 @@ static bool parse_8000_001e(struct topo_scan *tscan)
 	if (!boot_cpu_has(X86_FEATURE_TOPOEXT))
 		return false;
 
-	cpuid_leaf(0x8000001e, &leaf);
+	cpuid_read(0x8000001e, &leaf);
 
 	/*
 	 * If leaf 0xb/0x26 is available, then the APIC ID and the domain
diff --git a/arch/x86/kernel/cpu/topology_ext.c b/arch/x86/kernel/cpu/topology_ext.c
index eb915c73895f8..60dfaa02ffd0d 100644
--- a/arch/x86/kernel/cpu/topology_ext.c
+++ b/arch/x86/kernel/cpu/topology_ext.c
@@ -71,7 +71,7 @@ static inline bool topo_subleaf(struct topo_scan *tscan, u32 leaf, u32 subleaf,
 	default: return false;
 	}
 
-	cpuid_subleaf(leaf, subleaf, &sl);
+	cpuid_read_subleaf(leaf, subleaf, &sl);
 
 	if (!sl.num_processors || sl.type == INVALID_TYPE)
 		return false;
diff --git a/arch/x86/kernel/cpuid.c b/arch/x86/kernel/cpuid.c
index cbd04b677fd1b..b55fe9c7359ad 100644
--- a/arch/x86/kernel/cpuid.c
+++ b/arch/x86/kernel/cpuid.c
@@ -59,8 +59,7 @@ static void cpuid_smp_cpuid(void *cmd_block)
 	complete(&cmd->done);
 }
 
-static ssize_t cpuid_read(struct file *file, char __user *buf,
-			  size_t count, loff_t *ppos)
+static ssize_t cpuid_read_f(struct file *file, char __user *buf, size_t count, loff_t *ppos)
 {
 	char __user *tmp = buf;
 	struct cpuid_regs_done cmd;
@@ -120,7 +119,7 @@ static int cpuid_open(struct inode *inode, struct file *file)
 static const struct file_operations cpuid_fops = {
 	.owner = THIS_MODULE,
 	.llseek = no_seek_end_llseek,
-	.read = cpuid_read,
+	.read = cpuid_read_f,
 	.open = cpuid_open,
 };