Kill this globally defined wrapper and move to libnvdimm so that we can
ultimately remove include/linux/pmem.h and asm/pmem.h.
Cc: <x...@kernel.org>
Cc: Jeff Moyer <jmo...@redhat.com>
Cc: Ingo Molnar <mi...@redhat.com>
Cc: Christoph Hellwig <h...@lst.de>
Cc: "H. Peter Anvin" <h...@zytor.com>
Cc: Thomas Gleixner <t...@linutronix.de>
Cc: Matthew Wilcox <mawil...@microsoft.com>
Cc: Ross Zwisler <ross.zwis...@linux.intel.com>
Reviewed-by: Jan Kara <j...@suse.cz>
Signed-off-by: Dan Williams <dan.j.willi...@intel.com>
---
arch/x86/include/asm/pmem.h | 5 -----
arch/x86/mm/pageattr.c | 6 ++++++
drivers/nvdimm/claim.c | 3 ++-
drivers/nvdimm/pmem.c | 2 +-
drivers/nvdimm/pmem.h | 4 ++++
include/linux/pmem.h | 19 -------------------
6 files changed, 13 insertions(+), 26 deletions(-)
diff --git a/arch/x86/include/asm/pmem.h b/arch/x86/include/asm/pmem.h
index 4759a179aa52..b61a25a895a7 100644
--- a/arch/x86/include/asm/pmem.h
+++ b/arch/x86/include/asm/pmem.h
@@ -43,10 +43,5 @@ static inline void arch_memcpy_to_pmem(void *dst, const void
*src, size_t n)
__func__, dst, src, rem))
BUG();
}
-
-static inline void arch_invalidate_pmem(void *addr, size_t size)
-{
- clflush_cache_range(addr, size);
-}
#endif /* CONFIG_ARCH_HAS_PMEM_API */
#endif /* __ASM_X86_PMEM_H__ */
diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index c8520b2c62d2..757b0bcdf712 100644
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -150,6 +150,12 @@ void clflush_cache_range(void *vaddr, unsigned int size)
}
EXPORT_SYMBOL_GPL(clflush_cache_range);
+void arch_invalidate_pmem(void *addr, size_t size)
+{
+ clflush_cache_range(addr, size);
+}
+EXPORT_SYMBOL_GPL(arch_invalidate_pmem);
+
static void __cpa_flush_all(void *arg)
{
unsigned long cache = (unsigned long)arg;
diff --git a/drivers/nvdimm/claim.c b/drivers/nvdimm/claim.c
index b8b9c8ca7862..d2e16c0401df 100644
--- a/drivers/nvdimm/claim.c
+++ b/drivers/nvdimm/claim.c
@@ -14,6 +14,7 @@
#include <linux/sizes.h>
#include <linux/pmem.h>
#include "nd-core.h"
+#include "pmem.h"
#include "pfn.h"
#include "btt.h"
#include "nd.h"
@@ -272,7 +273,7 @@ static int nsio_rw_bytes(struct nd_namespace_common *ndns,
cleared /= 512;
badblocks_clear(&nsio->bb, sector, cleared);
}
- invalidate_pmem(nsio->addr + offset, size);
+ arch_invalidate_pmem(nsio->addr + offset, size);
} else
rc = -EIO;
}
diff --git a/drivers/nvdimm/pmem.c b/drivers/nvdimm/pmem.c
index 3b87702d46bb..68737bc68a07 100644
--- a/drivers/nvdimm/pmem.c
+++ b/drivers/nvdimm/pmem.c
@@ -71,7 +71,7 @@ static int pmem_clear_poison(struct pmem_device *pmem,
phys_addr_t offset,
badblocks_clear(&pmem->bb, sector, cleared);
}
- invalidate_pmem(pmem->virt_addr + offset, len);
+ arch_invalidate_pmem(pmem->virt_addr + offset, len);
return rc;
}
diff --git a/drivers/nvdimm/pmem.h b/drivers/nvdimm/pmem.h
index c4b3371c7f88..00005900c1b7 100644
--- a/drivers/nvdimm/pmem.h
+++ b/drivers/nvdimm/pmem.h
@@ -7,10 +7,14 @@
#ifdef CONFIG_ARCH_HAS_PMEM_API
void arch_wb_cache_pmem(void *addr, size_t size);
+void arch_invalidate_pmem(void *addr, size_t size);
#else
static inline void arch_wb_cache_pmem(void *addr, size_t size)
{
}
+static inline void arch_invalidate_pmem(void *addr, size_t size)
+{
+}
#endif
/* this definition is in it's own header for tools/testing/nvdimm to consume */
diff --git a/include/linux/pmem.h b/include/linux/pmem.h
index 33ae761f010a..559c00848583 100644
--- a/include/linux/pmem.h
+++ b/include/linux/pmem.h
@@ -30,11 +30,6 @@ static inline void arch_memcpy_to_pmem(void *dst, const void
*src, size_t n)
{
BUG();
}
-
-static inline void arch_invalidate_pmem(void *addr, size_t size)
-{
- BUG();
-}
#endif
static inline bool arch_has_pmem_api(void)
@@ -61,18 +56,4 @@ static inline void memcpy_to_pmem(void *dst, const void
*src, size_t n)
else
memcpy(dst, src, n);
}
-
-/**
- * invalidate_pmem - flush a pmem range from the cache hierarchy
- * @addr: virtual start address
- * @size: bytes to invalidate (internally aligned to cache line size)
- *
- * For platforms that support clearing poison this flushes any poisoned
- * ranges out of the cache
- */
-static inline void invalidate_pmem(void *addr, size_t size)
-{
- if (arch_has_pmem_api())
- arch_invalidate_pmem(addr, size);
-}
#endif /* __PMEM_H__ */
