On Wed, Mar 27, 2013 at 09:05:52AM +0900, Minchan Kim wrote:
> And please Cc stable.
Okay, here it is. The result is compile-tested.
Changes since v1:
* Remove the module-export for unmap_kernel_range and make zsmalloc
built-in instead
Here is the patch:
>From 2b70502720b36909f9f39bdf27be21321a219c31 Mon Sep 17 00:00:00 2001
From: Joerg Roedel <j...@8bytes.org>
Date: Tue, 26 Mar 2013 23:24:22 +0100
Subject: [PATCH v2] staging: zsmalloc: Fix link error on ARM
Testing the arm chromebook config against the upstream
kernel produces a linker error for the zsmalloc module from
staging. The symbol flush_tlb_kernel_range is not available
there. Fix this by removing the reimplementation of
unmap_kernel_range in the zsmalloc module and using the
function directly. The unmap_kernel_range function is not
usable by modules, so also disallow building the driver as a
module for now.
Cc: sta...@vger.kernel.org
Signed-off-by: Joerg Roedel <j...@8bytes.org>
---
drivers/staging/zsmalloc/Kconfig | 2 +-
drivers/staging/zsmalloc/zsmalloc-main.c | 5 +----
2 files changed, 2 insertions(+), 5 deletions(-)
diff --git a/drivers/staging/zsmalloc/Kconfig b/drivers/staging/zsmalloc/Kconfig
index 9084565..7fab032 100644
--- a/drivers/staging/zsmalloc/Kconfig
+++ b/drivers/staging/zsmalloc/Kconfig
@@ -1,5 +1,5 @@
config ZSMALLOC
- tristate "Memory allocator for compressed pages"
+ bool "Memory allocator for compressed pages"
default n
help
zsmalloc is a slab-based memory allocator designed to store
diff --git a/drivers/staging/zsmalloc/zsmalloc-main.c
b/drivers/staging/zsmalloc/zsmalloc-main.c
index e78d262..324e123 100644
--- a/drivers/staging/zsmalloc/zsmalloc-main.c
+++ b/drivers/staging/zsmalloc/zsmalloc-main.c
@@ -656,11 +656,8 @@ static inline void __zs_unmap_object(struct mapping_area
*area,
struct page *pages[2], int off, int size)
{
unsigned long addr = (unsigned long)area->vm_addr;
- unsigned long end = addr + (PAGE_SIZE * 2);
- flush_cache_vunmap(addr, end);
- unmap_kernel_range_noflush(addr, PAGE_SIZE * 2);
- flush_tlb_kernel_range(addr, end);
+ unmap_kernel_range(addr, PAGE_SIZE * 2);
}
#else /* USE_PGTABLE_MAPPING */
--
1.7.9.5
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