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Message-ID: <20250326084751.2260634-2-mingo@kernel.org>
Date: Wed, 26 Mar 2025 09:47:46 +0100
From: Ingo Molnar <mingo@...nel.org>
To: linux-kernel@...r.kernel.org
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
Peter Zijlstra <peterz@...radead.org>
Subject: [PATCH 1/5] bugs/core: Extend __WARN_FLAGS() with the 'cond_str' parameter
Push it down into every architecture that defines __WARN_FLAGS().
Don't pass anything substantial down yet, just propagate the
new parameter with empty strings, without generating it or
using it.
Signed-off-by: Ingo Molnar <mingo@...nel.org>
---
arch/arm64/include/asm/bug.h | 2 +-
arch/loongarch/include/asm/bug.h | 2 +-
arch/parisc/include/asm/bug.h | 4 ++--
arch/powerpc/include/asm/bug.h | 2 +-
arch/riscv/include/asm/bug.h | 2 +-
arch/s390/include/asm/bug.h | 2 +-
arch/sh/include/asm/bug.h | 2 +-
arch/x86/include/asm/bug.h | 2 +-
include/asm-generic/bug.h | 7 ++++---
9 files changed, 13 insertions(+), 12 deletions(-)
diff --git a/arch/arm64/include/asm/bug.h b/arch/arm64/include/asm/bug.h
index 28be048db3f6..bceeaec21fb9 100644
--- a/arch/arm64/include/asm/bug.h
+++ b/arch/arm64/include/asm/bug.h
@@ -19,7 +19,7 @@
unreachable(); \
} while (0)
-#define __WARN_FLAGS(flags) __BUG_FLAGS(BUGFLAG_WARNING|(flags))
+#define __WARN_FLAGS(cond_str, flags) __BUG_FLAGS(BUGFLAG_WARNING|(flags))
#define HAVE_ARCH_BUG
diff --git a/arch/loongarch/include/asm/bug.h b/arch/loongarch/include/asm/bug.h
index f6f254f2c5db..51c2cb98d728 100644
--- a/arch/loongarch/include/asm/bug.h
+++ b/arch/loongarch/include/asm/bug.h
@@ -42,7 +42,7 @@
asm_inline volatile (__stringify(ASM_BUG_FLAGS(flags)) \
extra);
-#define __WARN_FLAGS(flags) \
+#define __WARN_FLAGS(cond_str, flags) \
do { \
instrumentation_begin(); \
__BUG_FLAGS(BUGFLAG_WARNING|(flags), ANNOTATE_REACHABLE(10001b));\
diff --git a/arch/parisc/include/asm/bug.h b/arch/parisc/include/asm/bug.h
index 833555f74ffa..1a87cf80ec3c 100644
--- a/arch/parisc/include/asm/bug.h
+++ b/arch/parisc/include/asm/bug.h
@@ -50,7 +50,7 @@
#endif
#ifdef CONFIG_DEBUG_BUGVERBOSE
-#define __WARN_FLAGS(flags) \
+#define __WARN_FLAGS(cond_str, flags) \
do { \
asm volatile("\n" \
"1:\t" PARISC_BUG_BREAK_ASM "\n" \
@@ -66,7 +66,7 @@
"i" (sizeof(struct bug_entry)) ); \
} while(0)
#else
-#define __WARN_FLAGS(flags) \
+#define __WARN_FLAGS(cond_str, flags) \
do { \
asm volatile("\n" \
"1:\t" PARISC_BUG_BREAK_ASM "\n" \
diff --git a/arch/powerpc/include/asm/bug.h b/arch/powerpc/include/asm/bug.h
index 1db485aacbd9..34d39ec79720 100644
--- a/arch/powerpc/include/asm/bug.h
+++ b/arch/powerpc/include/asm/bug.h
@@ -72,7 +72,7 @@
} while (0)
#define HAVE_ARCH_BUG
-#define __WARN_FLAGS(flags) BUG_ENTRY("twi 31, 0, 0", BUGFLAG_WARNING | (flags))
+#define __WARN_FLAGS(cond_str, flags) BUG_ENTRY("twi 31, 0, 0", BUGFLAG_WARNING | (flags))
#ifdef CONFIG_PPC64
#define BUG_ON(x) do { \
diff --git a/arch/riscv/include/asm/bug.h b/arch/riscv/include/asm/bug.h
index 1aaea81fb141..b22ee4d2c882 100644
--- a/arch/riscv/include/asm/bug.h
+++ b/arch/riscv/include/asm/bug.h
@@ -76,7 +76,7 @@ do { \
unreachable(); \
} while (0)
-#define __WARN_FLAGS(flags) __BUG_FLAGS(BUGFLAG_WARNING|(flags))
+#define __WARN_FLAGS(cond_str, flags) __BUG_FLAGS(BUGFLAG_WARNING|(flags))
#define HAVE_ARCH_BUG
diff --git a/arch/s390/include/asm/bug.h b/arch/s390/include/asm/bug.h
index c500d45fb465..ef3e495ec1e3 100644
--- a/arch/s390/include/asm/bug.h
+++ b/arch/s390/include/asm/bug.h
@@ -46,7 +46,7 @@
unreachable(); \
} while (0)
-#define __WARN_FLAGS(flags) do { \
+#define __WARN_FLAGS(cond_str, flags) do { \
__EMIT_BUG(BUGFLAG_WARNING|(flags)); \
} while (0)
diff --git a/arch/sh/include/asm/bug.h b/arch/sh/include/asm/bug.h
index 05a485c4fabc..834c621ab249 100644
--- a/arch/sh/include/asm/bug.h
+++ b/arch/sh/include/asm/bug.h
@@ -52,7 +52,7 @@ do { \
unreachable(); \
} while (0)
-#define __WARN_FLAGS(flags) \
+#define __WARN_FLAGS(cond_str, flags) \
do { \
__asm__ __volatile__ ( \
"1:\t.short %O0\n" \
diff --git a/arch/x86/include/asm/bug.h b/arch/x86/include/asm/bug.h
index f0e9acf72547..413b86b876d9 100644
--- a/arch/x86/include/asm/bug.h
+++ b/arch/x86/include/asm/bug.h
@@ -92,7 +92,7 @@ do { \
* were to trigger, we'd rather wreck the machine in an attempt to get the
* message out than not know about it.
*/
-#define __WARN_FLAGS(flags) \
+#define __WARN_FLAGS(cond_str, flags) \
do { \
__auto_type __flags = BUGFLAG_WARNING|(flags); \
instrumentation_begin(); \
diff --git a/include/asm-generic/bug.h b/include/asm-generic/bug.h
index 387720933973..af76e4a04b16 100644
--- a/include/asm-generic/bug.h
+++ b/include/asm-generic/bug.h
@@ -100,17 +100,18 @@ extern __printf(1, 2) void __warn_printk(const char *fmt, ...);
instrumentation_end(); \
} while (0)
#else
-#define __WARN() __WARN_FLAGS(BUGFLAG_TAINT(TAINT_WARN))
+#define __WARN() __WARN_FLAGS("", BUGFLAG_TAINT(TAINT_WARN))
#define __WARN_printf(taint, arg...) do { \
instrumentation_begin(); \
__warn_printk(arg); \
- __WARN_FLAGS(BUGFLAG_NO_CUT_HERE | BUGFLAG_TAINT(taint));\
+ __WARN_FLAGS("", BUGFLAG_NO_CUT_HERE | BUGFLAG_TAINT(taint));\
instrumentation_end(); \
} while (0)
#define WARN_ON_ONCE(condition) ({ \
int __ret_warn_on = !!(condition); \
if (unlikely(__ret_warn_on)) \
- __WARN_FLAGS(BUGFLAG_ONCE | \
+ __WARN_FLAGS("", \
+ BUGFLAG_ONCE | \
BUGFLAG_TAINT(TAINT_WARN)); \
unlikely(__ret_warn_on); \
})
--
2.45.2
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