From d690b2afd5a7a02816386aa704c8c0b1aca8d2de Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Wed, 30 Jan 2008 13:33:47 +0100 Subject: [PATCH] x86: add early_ioremap() leak detection Signed-off-by: Ingo Molnar Signed-off-by: Thomas Gleixner --- arch/x86/mm/ioremap_32.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/arch/x86/mm/ioremap_32.c b/arch/x86/mm/ioremap_32.c index 7f7daf50ef..b743de841f 100644 --- a/arch/x86/mm/ioremap_32.c +++ b/arch/x86/mm/ioremap_32.c @@ -311,6 +311,22 @@ static inline void __init early_clear_fixmap(enum fixed_addresses idx) int __initdata early_ioremap_nested; +static int __init check_early_ioremap_leak(void) +{ + if (!early_ioremap_nested) + return 0; + + printk(KERN_WARNING + "Debug warning: early ioremap leak of %d areas detected.\n", + early_ioremap_nested); + printk(KERN_WARNING + "please boot with early_ioremap_debug and report the dmesg.\n"); + WARN_ON(1); + + return 1; +} +late_initcall(check_early_ioremap_leak); + void __init *early_ioremap(unsigned long phys_addr, unsigned long size) { unsigned long offset, last_addr; -- 2.39.5