linux-kernel - [PATCH 3/6] x86: remove the unused set_memory_array

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Message-Id: <20190813090146.26377-4-hch@lst.de>
Date:   Tue, 13 Aug 2019 11:01:43 +0200
From:   Christoph Hellwig <hch@....de>
To:     Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will@...nel.org>, x86@...nel.org
Cc:     Dave Hansen <dave.hansen@...ux.intel.com>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 3/6] x86: remove the unused set_memory_array_* functions

Signed-off-by: Christoph Hellwig <hch@....de>
---
 arch/x86/include/asm/set_memory.h |  5 ---
 arch/x86/mm/pageattr.c            | 75 -------------------------------
 2 files changed, 80 deletions(-)

diff --git a/arch/x86/include/asm/set_memory.h b/arch/x86/include/asm/set_memory.h
index ae7b909dc242..899ec9ae7cff 100644
--- a/arch/x86/include/asm/set_memory.h
+++ b/arch/x86/include/asm/set_memory.h
@@ -48,11 +48,6 @@ int set_memory_encrypted(unsigned long addr, int numpages);
 int set_memory_decrypted(unsigned long addr, int numpages);
 int set_memory_np_noalias(unsigned long addr, int numpages);
 
-int set_memory_array_uc(unsigned long *addr, int addrinarray);
-int set_memory_array_wc(unsigned long *addr, int addrinarray);
-int set_memory_array_wt(unsigned long *addr, int addrinarray);
-int set_memory_array_wb(unsigned long *addr, int addrinarray);
-
 int set_pages_array_uc(struct page **pages, int addrinarray);
 int set_pages_array_wc(struct page **pages, int addrinarray);
 int set_pages_array_wt(struct page **pages, int addrinarray);
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index a02ca8986299..3be5d22c005a 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -1809,63 +1809,6 @@ int set_memory_uc(unsigned long addr, int numpages)
 }
 EXPORT_SYMBOL(set_memory_uc);
 
-static int _set_memory_array(unsigned long *addr, int numpages,
-		enum page_cache_mode new_type)
-{
-	enum page_cache_mode set_type;
-	int i, j;
-	int ret;
-
-	for (i = 0; i < numpages; i++) {
-		ret = reserve_memtype(__pa(addr[i]), __pa(addr[i]) + PAGE_SIZE,
-					new_type, NULL);
-		if (ret)
-			goto out_free;
-	}
-
-	/* If WC, set to UC- first and then WC */
-	set_type = (new_type == _PAGE_CACHE_MODE_WC) ?
-				_PAGE_CACHE_MODE_UC_MINUS : new_type;
-
-	ret = change_page_attr_set(addr, numpages,
-				   cachemode2pgprot(set_type), 1);
-
-	if (!ret && new_type == _PAGE_CACHE_MODE_WC)
-		ret = change_page_attr_set_clr(addr, numpages,
-					       cachemode2pgprot(
-						_PAGE_CACHE_MODE_WC),
-					       __pgprot(_PAGE_CACHE_MASK),
-					       0, CPA_ARRAY, NULL);
-	if (ret)
-		goto out_free;
-
-	return 0;
-
-out_free:
-	for (j = 0; j < i; j++)
-		free_memtype(__pa(addr[j]), __pa(addr[j]) + PAGE_SIZE);
-
-	return ret;
-}
-
-int set_memory_array_uc(unsigned long *addr, int numpages)
-{
-	return _set_memory_array(addr, numpages, _PAGE_CACHE_MODE_UC_MINUS);
-}
-EXPORT_SYMBOL(set_memory_array_uc);
-
-int set_memory_array_wc(unsigned long *addr, int numpages)
-{
-	return _set_memory_array(addr, numpages, _PAGE_CACHE_MODE_WC);
-}
-EXPORT_SYMBOL(set_memory_array_wc);
-
-int set_memory_array_wt(unsigned long *addr, int numpages)
-{
-	return _set_memory_array(addr, numpages, _PAGE_CACHE_MODE_WT);
-}
-EXPORT_SYMBOL_GPL(set_memory_array_wt);
-
 int _set_memory_wc(unsigned long addr, int numpages)
 {
 	int ret;
@@ -1942,24 +1885,6 @@ int set_memory_wb(unsigned long addr, int numpages)
 }
 EXPORT_SYMBOL(set_memory_wb);
 
-int set_memory_array_wb(unsigned long *addr, int numpages)
-{
-	int i;
-	int ret;
-
-	/* WB cache mode is hard wired to all cache attribute bits being 0 */
-	ret = change_page_attr_clear(addr, numpages,
-				      __pgprot(_PAGE_CACHE_MASK), 1);
-	if (ret)
-		return ret;
-
-	for (i = 0; i < numpages; i++)
-		free_memtype(__pa(addr[i]), __pa(addr[i]) + PAGE_SIZE);
-
-	return 0;
-}
-EXPORT_SYMBOL(set_memory_array_wb);
-
 int set_memory_x(unsigned long addr, int numpages)
 {
 	if (!(__supported_pte_mask & _PAGE_NX))
-- 
2.20.1