Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > linux.kernel > #1713581 > unrolled thread

[PATCH -tip 3/4] arm64: Cleanup in_exception_text() and move it in asm/sections.h

Back to article view | Back to linux.kernel

This discussion starts older than the indexed window; earlier articles aren't shown. The article labeled Started by below is the oldest one visible, not the original post.

Contents

  [PATCH -tip 3/4] arm64: Cleanup in_exception_text() and move it in asm/sections.h Masami Hiramatsu <mhiramat@kernel.org> - 2017-08-17 09:20 +0200

#1713581 — [PATCH -tip 3/4] arm64: Cleanup in_exception_text() and move it in asm/sections.h

Cleanup in_exception_text() using memory_contains() and
move it in asm/sections.h from asm/trap.h because
section symbols and memory_contains() are defined in
asm/sections.h.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
---
 arch/arm64/include/asm/sections.h |   16 ++++++++++++++++
 arch/arm64/include/asm/traps.h    |   16 ----------------
 2 files changed, 16 insertions(+), 16 deletions(-)

diff --git a/arch/arm64/include/asm/sections.h b/arch/arm64/include/asm/sections.h
index 941267caa39c..abaa8ac79eaf 100644
--- a/arch/arm64/include/asm/sections.h
+++ b/arch/arm64/include/asm/sections.h
@@ -29,4 +29,20 @@ extern char __inittext_begin[], __inittext_end[];
 extern char __irqentry_text_start[], __irqentry_text_end[];
 extern char __mmuoff_data_start[], __mmuoff_data_end[];
 
+/**
+ * in_exception_text - check if an address is in exception_text or
+ *			irqentry_text
+ * @addr: virtual address to be checked
+ *
+ * Returns: true if the address specified by @addr is in the exception_text or
+ * irqentry_text, false otherwise.
+ */
+static inline bool in_exception_text(unsigned long addr)
+{
+	return memory_contains(__exception_text_start, __exception_text_end,
+			       (void *)addr, 0) ||
+		memory_contains(__irqentry_text_start, __irqentry_text_end,
+				(void *)addr, 0);
+}
+
 #endif /* __ASM_SECTIONS_H */
diff --git a/arch/arm64/include/asm/traps.h b/arch/arm64/include/asm/traps.h
index 47a9066f7c86..c3734c3e8115 100644
--- a/arch/arm64/include/asm/traps.h
+++ b/arch/arm64/include/asm/traps.h
@@ -37,20 +37,4 @@ void unregister_undef_hook(struct undef_hook *hook);
 
 void arm64_notify_segfault(struct pt_regs *regs, unsigned long addr);
 
-static inline int __in_irqentry_text(unsigned long ptr)
-{
-	return ptr >= (unsigned long)&__irqentry_text_start &&
-	       ptr < (unsigned long)&__irqentry_text_end;
-}
-
-static inline int in_exception_text(unsigned long ptr)
-{
-	int in;
-
-	in = ptr >= (unsigned long)&__exception_text_start &&
-	     ptr < (unsigned long)&__exception_text_end;
-
-	return in ? : __in_irqentry_text(ptr);
-}
-
 #endif

[toc] | [standalone]

Back to top | Article view | linux.kernel

csiph-web