The patch titled
memory_accessor: new interface for reading/writing persistent memory
has been added to the -mm tree. Its filename is
memory_accessor-new-interface-for-reading-writing-persistent-memory.patch
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------------------------------------------------------
Subject: memory_accessor: new interface for reading/writing persistent memory
From: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx>
Add an interface by which other kernel code can read/write persistent
memory such as I2C or SPI EEPROMs, or devices which provide NVRAM. Use
cases include storage of board-specific configuration data like Ethernet
addresses and sensor calibrations.
Original idea, review and improvement suggestions by David Brownell.
Acked-by: David Brownell <dbrownell@xxxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Kevin Hilman <khilman@xxxxxxxxxxxxxxxxxxx>
Cc: Jean Delvare <khali@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/linux/memory.h | 11 +++++++++++
1 file changed, 11 insertions(+)
diff -puN include/linux/memory.h~memory_accessor-new-interface-for-reading-writing-persistent-memory include/linux/memory.h
--- a/include/linux/memory.h~memory_accessor-new-interface-for-reading-writing-persistent-memory
+++ a/include/linux/memory.h
@@ -105,4 +105,15 @@ enum mem_add_context { BOOT, HOTPLUG };
*/
extern struct mutex text_mutex;
+/*
+ * 'struct memory_accessor' is a generic interface to provide
+ * in-kernel access to persistent memory such as i2c or SPI EEPROMs
+ */
+struct memory_accessor {
+ ssize_t (*read)(struct memory_accessor *, char *buf, off_t offset,
+ size_t count);
+ ssize_t (*write)(struct memory_accessor *, const char *buf,
+ off_t offset, size_t count);
+};
+
#endif /* _LINUX_MEMORY_H_ */
_
Patches currently in -mm which might be from khilman@xxxxxxxxxxxxxxxxxxx are
origin.patch
linux-next.patch
memory_accessor-new-interface-for-reading-writing-persistent-memory.patch
memory_accessor-implement-the-new-memory_accessor-interface-for-i2c-eeprom.patch
memory_accessor-implement-the-new-memory_accessor-interfaces-for-spi-eeproms.patch
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