linux-kernel - [patch 9/9] x86/callthunks: Use EXPORT_PER_CPU_SYMBOL

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Message-ID: <20240304005104.841915535@linutronix.de>
Date: Mon,  4 Mar 2024 11:12:29 +0100 (CET)
From: Thomas Gleixner <tglx@...utronix.de>
To: LKML <linux-kernel@...r.kernel.org>
Cc: x86@...nel.org,
 Linus Torvalds <torvalds@...uxfoundation.org>,
 Uros Bizjak <ubizjak@...il.com>,
 linux-sparse@...r.kernel.org,
 lkp@...el.com,
 oe-kbuild-all@...ts.linux.dev
Subject: [patch 9/9] x86/callthunks: Use EXPORT_PER_CPU_SYMBOL_GPL() for per
 CPU variables

sparse complains rightfully about the usage of EXPORT_SYMBOL_GPL() for per
CPU variables:

callthunks.c:346:20: sparse: warning: incorrect type in initializer (different address spaces)
callthunks.c:346:20: sparse:    expected void const [noderef] __percpu *__vpp_verify
callthunks.c:346:20: sparse:    got unsigned long long *

Use EXPORT_PER_CPU_SYMBOL_GPL instead.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 arch/x86/kernel/callthunks.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/arch/x86/kernel/callthunks.c
+++ b/arch/x86/kernel/callthunks.c
@@ -44,8 +44,8 @@ DEFINE_PER_CPU(u64, __x86_call_count);
 DEFINE_PER_CPU(u64, __x86_ret_count);
 DEFINE_PER_CPU(u64, __x86_stuffs_count);
 DEFINE_PER_CPU(u64, __x86_ctxsw_count);
-EXPORT_SYMBOL_GPL(__x86_ctxsw_count);
-EXPORT_SYMBOL_GPL(__x86_call_count);
+EXPORT_PER_CPU_SYMBOL_GPL(__x86_ctxsw_count);
+EXPORT_PER_CPU_SYMBOL_GPL(__x86_call_count);
 #endif
 
 extern s32 __call_sites[], __call_sites_end[];