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Message-Id: <1332451034-28437-1-git-send-email-andi@firstfloor.org>
Date: Thu, 22 Mar 2012 14:17:14 -0700
From: Andi Kleen <andi@...stfloor.org>
To: linux-kernel@...r.kernel.org
Cc: x86@...nel.org, Andi Kleen <ak@...ux.intel.com>, jeremy@...p.org
Subject: [PATCH] x86, paravirt: Remove CONFIG_PARAVIRT_DEBUG
From: Andi Kleen <ak@...ux.intel.com>
CONFIG_PARAVIRT_DEBUG seems rather useless. It only has a single BUG_ON
on a NULL pointer and that is directly in front of code that references
that pointer anyways and would nicely oops if anything was wrong.
So remove that option.
Cc: jeremy@...p.org
Signed-off-by: Andi Kleen <ak@...ux.intel.com>
---
arch/x86/Kconfig | 7 -------
arch/x86/include/asm/paravirt_types.h | 8 --------
2 files changed, 0 insertions(+), 15 deletions(-)
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 5bed94e..ad52be6 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -628,13 +628,6 @@ config PARAVIRT_CLOCK
endif
-config PARAVIRT_DEBUG
- bool "paravirt-ops debugging"
- depends on PARAVIRT && DEBUG_KERNEL
- ---help---
- Enable to debug paravirt_ops internals. Specifically, BUG if
- a paravirt_op is missing when it is called.
-
config NO_BOOTMEM
def_bool y
diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h
index 8e8b9a4..fa317c2 100644
--- a/arch/x86/include/asm/paravirt_types.h
+++ b/arch/x86/include/asm/paravirt_types.h
@@ -526,18 +526,11 @@ int paravirt_disable_iospace(void);
#define VEXTRA_CLOBBERS , "rax", "r8", "r9", "r10", "r11"
#endif /* CONFIG_X86_32 */
-#ifdef CONFIG_PARAVIRT_DEBUG
-#define PVOP_TEST_NULL(op) BUG_ON(op == NULL)
-#else
-#define PVOP_TEST_NULL(op) ((void)op)
-#endif
-
#define ____PVOP_CALL(rettype, op, clbr, call_clbr, extra_clbr, \
pre, post, ...) \
({ \
rettype __ret; \
PVOP_CALL_ARGS; \
- PVOP_TEST_NULL(op); \
/* This is 32-bit specific, but is okay in 64-bit */ \
/* since this condition will never hold */ \
if (sizeof(rettype) > sizeof(unsigned long)) { \
@@ -577,7 +570,6 @@ int paravirt_disable_iospace(void);
#define ____PVOP_VCALL(op, clbr, call_clbr, extra_clbr, pre, post, ...) \
({ \
PVOP_VCALL_ARGS; \
- PVOP_TEST_NULL(op); \
asm volatile(pre \
paravirt_alt(PARAVIRT_CALL) \
post \
--
1.7.7.6
--
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