linux-kernel - Re: [PATCH] Clean up namespace in kmap

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Message-Id: <200812031140.02338.arnd@arndb.de>
Date:	Wed, 3 Dec 2008 11:40:01 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	x86@...nel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Clean up namespace in kmap_types.h

On Wednesday 03 December 2008, Andi Kleen wrote:
> Clean up namespace in kmap_types.h
> 
> During debugging I often use custom "D" macros. But I ran
> into a name space conflict with kmap_types.h which also defines a D macro.
> Rename the kmap_types.h one to KMAPD.
> 
> No semantical changes.
> 
> Signed-off-by: Andi Kleen <ak@...ux.intel.com>

The patch looks ok, but it seems wrong to do this only on one architecture,
because kmap_types.h is mostly identical across all architectures.

I'm working on patches to consolidate a lot of generic headers, why not
add this in a generic way and make x86 use that version?

	Arnd <><

--- /dev/null
+++ b/include/asm-generic/kmap_types.h
@@ -0,0 +1,29 @@
+#ifndef __ASM_GENERIC_KMAP_TYPES_H
+#define __ASM_GENERIC_KMAP_TYPES_H
+
+#ifdef CONFIG_DEBUG_HIGHMEM
+# define KMAPD(n) __KM_FENCE_##n ,
+#else
+# define KMAPD(n)
+#endif
+
+enum km_type {
+KMAPD(0)	KM_BOUNCE_READ,
+KMAPD(1)	KM_SKB_SUNRPC_DATA,
+KMAPD(2)	KM_SKB_DATA_SOFTIRQ,
+KMAPD(3)	KM_USER0,
+KMAPD(4)	KM_USER1,
+KMAPD(5)	KM_BIO_SRC_IRQ,
+KMAPD(6)	KM_BIO_DST_IRQ,
+KMAPD(7)	KM_PTE0,
+KMAPD(8)	KM_PTE1,
+KMAPD(9)	KM_IRQ0,
+KMAPD(10)	KM_IRQ1,
+KMAPD(11)	KM_SOFTIRQ0,
+KMAPD(12)	KM_SOFTIRQ1,
+KMAPD(13)	KM_TYPE_NR
+};
+
+#undef KMAPD
+
+#endif /* __ASM_GENERIC_KMAP_TYPES_H */
--
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