linux-kernel - [patch V2 22/30] x86/fpu: Make WARN_ON

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Date:   Fri, 15 Oct 2021 03:16:28 +0200 (CEST)
From:   Thomas Gleixner <tglx@...utronix.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     x86@...nel.org, "Chang S. Bae" <chang.seok.bae@...el.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Arjan van de Ven <arjan@...ux.intel.com>,
        kvm@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>,
        "Liu, Jing2" <jing2.liu@...el.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Xiaoyao Li <xiaoyao.li@...el.com>
Subject: [patch V2 22/30] x86/fpu: Make WARN_ON_FPU() private

No point in being in global headers.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>

---
 arch/x86/include/asm/fpu/internal.h |  9 ---------
 arch/x86/kernel/fpu/init.c          |  2 ++
 arch/x86/kernel/fpu/internal.h      |  6 ++++++
 3 files changed, 8 insertions(+), 9 deletions(-)
---
diff --git a/arch/x86/include/asm/fpu/internal.h b/arch/x86/include/asm/fpu/internal.h
index 7722aadc3278..f8413a509ba5 100644
--- a/arch/x86/include/asm/fpu/internal.h
+++ b/arch/x86/include/asm/fpu/internal.h
@@ -42,15 +42,6 @@ extern void fpu__init_system(struct cpuinfo_x86 *c);
 extern void fpu__init_check_bugs(void);
 extern void fpu__resume_cpu(void);
 
-/*
- * Debugging facility:
- */
-#ifdef CONFIG_X86_DEBUG_FPU
-# define WARN_ON_FPU(x) WARN_ON_ONCE(x)
-#else
-# define WARN_ON_FPU(x) ({ (void)(x); 0; })
-#endif
-
 extern union fpregs_state init_fpstate;
 extern void fpstate_init_user(union fpregs_state *state);
 
diff --git a/arch/x86/kernel/fpu/init.c b/arch/x86/kernel/fpu/init.c
index 545c91c723b8..24873dfe2dba 100644
--- a/arch/x86/kernel/fpu/init.c
+++ b/arch/x86/kernel/fpu/init.c
@@ -10,6 +10,8 @@
 #include <linux/sched/task.h>
 #include <linux/init.h>
 
+#include "internal.h"
+
 /*
  * Initialize the registers found in all CPUs, CR0 and CR4:
  */
diff --git a/arch/x86/kernel/fpu/internal.h b/arch/x86/kernel/fpu/internal.h
index a8aac21ba364..5ddc09e03c2a 100644
--- a/arch/x86/kernel/fpu/internal.h
+++ b/arch/x86/kernel/fpu/internal.h
@@ -13,6 +13,12 @@ static __always_inline __pure bool use_fxsr(void)
 	return cpu_feature_enabled(X86_FEATURE_FXSR);
 }
 
+#ifdef CONFIG_X86_DEBUG_FPU
+# define WARN_ON_FPU(x) WARN_ON_ONCE(x)
+#else
+# define WARN_ON_FPU(x) ({ (void)(x); 0; })
+#endif
+
 /* Init functions */
 extern void fpu__init_prepare_fx_sw_frame(void);