pstore/zone: Introduce common layer to manage storage zones

Implement a common set of APIs needed to support pstore storage zones, based on how ramoops is designed. This will be used by pstore/blk with the intention of migrating pstore/ram in the future. Signed-off-by: WeiXiong Liao <[email protected]> Link: https://lore.kernel.org/lkml/[email protected]/ Co-developed-by: Kees Cook <[email protected]> Signed-off-by: Kees Cook <[email protected]>
ashr · May 30, 2020 · d26c332 · d26c332
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diff --git a/fs/pstore/Kconfig b/fs/pstore/Kconfig
@@ -153,3 +153,10 @@ config PSTORE_RAM
 	  "ramoops.ko".
 
 	  For more information, see Documentation/admin-guide/ramoops.rst.
+
+config PSTORE_ZONE
+	tristate
+	depends on PSTORE
+	help
+	  The common layer for pstore/blk (and pstore/ram in the future)
+	  to manage storage in zones.
diff --git a/fs/pstore/Makefile b/fs/pstore/Makefile
@@ -12,3 +12,6 @@ pstore-$(CONFIG_PSTORE_PMSG)	+= pmsg.o
 
 ramoops-objs += ram.o ram_core.o
 obj-$(CONFIG_PSTORE_RAM)	+= ramoops.o
+
+pstore_zone-objs += zone.o
+obj-$(CONFIG_PSTORE_ZONE)	+= pstore_zone.o