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authorDan Williams <dan.j.williams@intel.com>2017-01-14 07:36:58 +0300
committerDan Williams <dan.j.williams@intel.com>2017-06-28 02:29:54 +0300
commitca6a4657e5420dec727256717e905ebc3c751352 (patch)
tree40f80396f70137197e7b2e2e04a1fa3dd522d022 /arch/x86/include/asm/pmem.h
parentf2b612578e163b49661ece2fe01dfafb0e78f545 (diff)
downloadlinux-ca6a4657e5420dec727256717e905ebc3c751352.tar.xz
x86, libnvdimm, pmem: remove global pmem api
Now that all callers of the pmem api have been converted to dax helpers that call back to the pmem driver, we can remove include/linux/pmem.h and asm/pmem.h. Cc: <x86@kernel.org> Cc: Jeff Moyer <jmoyer@redhat.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Toshi Kani <toshi.kani@hpe.com> Cc: Oliver O'Halloran <oohall@gmail.com> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Reviewed-by: Jan Kara <jack@suse.cz> Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Diffstat (limited to 'arch/x86/include/asm/pmem.h')
-rw-r--r--arch/x86/include/asm/pmem.h47
1 files changed, 0 insertions, 47 deletions
diff --git a/arch/x86/include/asm/pmem.h b/arch/x86/include/asm/pmem.h
deleted file mode 100644
index b61a25a895a7..000000000000
--- a/arch/x86/include/asm/pmem.h
+++ /dev/null
@@ -1,47 +0,0 @@
-/*
- * Copyright(c) 2015 Intel Corporation. All rights reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of version 2 of the GNU General Public License as
- * published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- */
-#ifndef __ASM_X86_PMEM_H__
-#define __ASM_X86_PMEM_H__
-
-#include <linux/uaccess.h>
-#include <asm/cacheflush.h>
-#include <asm/cpufeature.h>
-#include <asm/special_insns.h>
-
-#ifdef CONFIG_ARCH_HAS_PMEM_API
-/**
- * arch_memcpy_to_pmem - copy data to persistent memory
- * @dst: destination buffer for the copy
- * @src: source buffer for the copy
- * @n: length of the copy in bytes
- *
- * Copy data to persistent memory media via non-temporal stores so that
- * a subsequent pmem driver flush operation will drain posted write queues.
- */
-static inline void arch_memcpy_to_pmem(void *dst, const void *src, size_t n)
-{
- int rem;
-
- /*
- * We are copying between two kernel buffers, if
- * __copy_from_user_inatomic_nocache() returns an error (page
- * fault) we would have already reported a general protection fault
- * before the WARN+BUG.
- */
- rem = __copy_from_user_inatomic_nocache(dst, (void __user *) src, n);
- if (WARN(rem, "%s: fault copying %p <- %p unwritten: %d\n",
- __func__, dst, src, rem))
- BUG();
-}
-#endif /* CONFIG_ARCH_HAS_PMEM_API */
-#endif /* __ASM_X86_PMEM_H__ */