[PATCH v5 1/6] cxl: Move cxl_core to new directory

[Dan Williams <dan.j.williams@intel.com>]

From: Ben Widawsky <ben.widawsky@intel.com>

CXL core is growing, and it's already arguably unmanageable. To support
future growth, move core functionality to a new directory and rename the
file to represent just bus support. Future work will remove non-bus
functionality.

Note that mem.h is renamed to cxlmem.h to avoid a namespace collision
with the global ARCH=um mem.h header.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Ben Widawsky <ben.widawsky@intel.com>
Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
---
 Documentation/driver-api/cxl/memory-devices.rst |    2 +-
 drivers/cxl/Makefile                            |    4 +---
 drivers/cxl/core/Makefile                       |    5 +++++
 drivers/cxl/core/bus.c                          |    4 ++--
 drivers/cxl/cxlmem.h                            |    0 
 drivers/cxl/pci.c                               |    2 +-
 drivers/cxl/pmem.c                              |    2 +-
 7 files changed, 11 insertions(+), 8 deletions(-)
 create mode 100644 drivers/cxl/core/Makefile
 rename drivers/cxl/{core.c => core/bus.c} (99%)
 rename drivers/cxl/{mem.h => cxlmem.h} (100%)

diff --git a/Documentation/driver-api/cxl/memory-devices.rst b/Documentation/driver-api/cxl/memory-devices.rst
index 487ce4f41d77..a86e2c7c551a 100644
--- a/Documentation/driver-api/cxl/memory-devices.rst
+++ b/Documentation/driver-api/cxl/memory-devices.rst
@@ -36,7 +36,7 @@ CXL Core
 .. kernel-doc:: drivers/cxl/cxl.h
    :internal:
 
-.. kernel-doc:: drivers/cxl/core.c
+.. kernel-doc:: drivers/cxl/core/bus.c
    :doc: cxl core
 
 External Interfaces
diff --git a/drivers/cxl/Makefile b/drivers/cxl/Makefile
index 32954059b37b..d1aaabc940f3 100644
--- a/drivers/cxl/Makefile
+++ b/drivers/cxl/Makefile
@@ -1,11 +1,9 @@
 # SPDX-License-Identifier: GPL-2.0
-obj-$(CONFIG_CXL_BUS) += cxl_core.o
+obj-$(CONFIG_CXL_BUS) += core/
 obj-$(CONFIG_CXL_MEM) += cxl_pci.o
 obj-$(CONFIG_CXL_ACPI) += cxl_acpi.o
 obj-$(CONFIG_CXL_PMEM) += cxl_pmem.o
 
-ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE=CXL
-cxl_core-y := core.o
 cxl_pci-y := pci.o
 cxl_acpi-y := acpi.o
 cxl_pmem-y := pmem.o
diff --git a/drivers/cxl/core/Makefile b/drivers/cxl/core/Makefile
new file mode 100644
index 000000000000..ad137f96e5c8
--- /dev/null
+++ b/drivers/cxl/core/Makefile
@@ -0,0 +1,5 @@
+# SPDX-License-Identifier: GPL-2.0
+obj-$(CONFIG_CXL_BUS) += cxl_core.o
+
+ccflags-y += -DDEFAULT_SYMBOL_NAMESPACE=CXL -I$(srctree)/drivers/cxl
+cxl_core-y := bus.o
diff --git a/drivers/cxl/core.c b/drivers/cxl/core/bus.c
similarity index 99%
rename from drivers/cxl/core.c
rename to drivers/cxl/core/bus.c
index a2e4d54fc7bc..0815eec23944 100644
--- a/drivers/cxl/core.c
+++ b/drivers/cxl/core/bus.c
@@ -6,8 +6,8 @@
 #include <linux/pci.h>
 #include <linux/slab.h>
 #include <linux/idr.h>
-#include "cxl.h"
-#include "mem.h"
+#include <cxlmem.h>
+#include <cxl.h>
 
 /**
  * DOC: cxl core
diff --git a/drivers/cxl/mem.h b/drivers/cxl/cxlmem.h
similarity index 100%
rename from drivers/cxl/mem.h
rename to drivers/cxl/cxlmem.h
diff --git a/drivers/cxl/pci.c b/drivers/cxl/pci.c
index 4cf351a3cf99..a945c5fda292 100644
--- a/drivers/cxl/pci.c
+++ b/drivers/cxl/pci.c
@@ -12,9 +12,9 @@
 #include <linux/pci.h>
 #include <linux/io.h>
 #include <linux/io-64-nonatomic-lo-hi.h>
+#include "cxlmem.h"
 #include "pci.h"
 #include "cxl.h"
-#include "mem.h"
 
 /**
  * DOC: cxl pci
diff --git a/drivers/cxl/pmem.c b/drivers/cxl/pmem.c
index 0088e41dd2f3..9652c3ee41e7 100644
--- a/drivers/cxl/pmem.c
+++ b/drivers/cxl/pmem.c
@@ -6,7 +6,7 @@
 #include <linux/ndctl.h>
 #include <linux/async.h>
 #include <linux/slab.h>
-#include "mem.h"
+#include "cxlmem.h"
 #include "cxl.h"
 
 /*