From: Alexei Starovoitov <ast@xxxxxxxxxx>
Move drm_mm.c to lib. The next commit will use drm_mm to manage
memory regions in bpf arena. Move drm_mm_print to
drivers/gpu/drm/drm_print.c, since it's not a core functionality
of drm_mm and it depeneds on drm_printer while drm_mm is
generic and usuable as-is by other subsystems.
Also add __maybe_unused to suppress compiler warnings.
Update MAINTAINERS file as well.
Signed-off-by: Alexei Starovoitov <ast@xxxxxxxxxx>
---
MAINTAINERS | 1 +
drivers/gpu/drm/Makefile | 1 -
drivers/gpu/drm/drm_print.c | 39 ++++++++++++++++++++++++++++++
lib/Makefile | 1 +
{drivers/gpu/drm => lib}/drm_mm.c | 40 +------------------------------
5 files changed, 42 insertions(+), 40 deletions(-)
rename {drivers/gpu/drm => lib}/drm_mm.c (96%)
diff --git a/MAINTAINERS b/MAINTAINERS
index 6880a8fac74c..1bfaa335fae7 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7504,6 +7504,7 @@ F: drivers/gpu/vga/
F: include/drm/drm
F: include/linux/vga*
F: include/uapi/drm/
+F: lib/drm_mm.c
X: drivers/gpu/drm/amd/
X: drivers/gpu/drm/armada/
X: drivers/gpu/drm/etnaviv/
diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
index 784229d4504d..e35d5de2b9f0 100644
--- a/drivers/gpu/drm/Makefile
+++ b/drivers/gpu/drm/Makefile
@@ -59,7 +59,6 @@ drm-y := \
drm_ioctl.o \
drm_lease.o \
drm_managed.o \
- drm_mm.o \
drm_mode_config.o \
drm_mode_object.o \
drm_modes.o \
diff --git a/drivers/gpu/drm/drm_print.c b/drivers/gpu/drm/drm_print.c
index 0081190201a7..2a8a5e0d691e 100644
--- a/drivers/gpu/drm/drm_print.c
+++ b/drivers/gpu/drm/drm_print.c
@@ -34,6 +34,7 @@
#include <drm/drm.h>
#include <drm/drm_drv.h>
#include <drm/drm_print.h>
+#include <drm/drm_mm.h>
/*
* __drm_debug: Enable debug output.
@@ -267,6 +268,44 @@ void drm_printf(struct drm_printer *p, const char *f, ...)
}
EXPORT_SYMBOL(drm_printf);
+static u64 drm_mm_dump_hole(struct drm_printer *p, const struct drm_mm_node *entry)
+{
+ u64 start, size;
+
+ size = entry->hole_size;
+ if (size) {
+ start = drm_mm_hole_node_start(entry);
+ drm_printf(p, "%#018llx-%#018llx: %llu: free\n",
+ start, start + size, size);
+ }
+
+ return size;
+}
+/**
+ * drm_mm_print - print allocator state
+ * @mm: drm_mm allocator to print
+ * @p: DRM printer to use
+ */
+void drm_mm_print(const struct drm_mm *mm, struct drm_printer *p)
+{
+ const struct drm_mm_node *entry;
+ u64 total_used = 0, total_free = 0, total = 0;
+
+ total_free += drm_mm_dump_hole(p, &mm->head_node);
+
+ drm_mm_for_each_node(entry, mm) {
+ drm_printf(p, "%#018llx-%#018llx: %llu: used\n", entry->start,
+ entry->start + entry->size, entry->size);
+ total_used += entry->size;
+ total_free += drm_mm_dump_hole(p, entry);
+ }
+ total = total_free + total_used;
+
+ drm_printf(p, "total: %llu, used %llu free %llu\n", total,
+ total_used, total_free);
+}
+EXPORT_SYMBOL(drm_mm_print);
+
/**
* drm_print_bits - print bits to a &drm_printer stream
*
diff --git a/lib/Makefile b/lib/Makefile
index 773adf88af41..605aa25b71ab 100644
--- a/lib/Makefile
+++ b/lib/Makefile
@@ -58,6 +58,7 @@ obj-$(CONFIG_TEST_HEXDUMP) += test_hexdump.o
obj-y += kstrtox.o
obj-$(CONFIG_FIND_BIT_BENCHMARK) += find_bit_benchmark.o
obj-$(CONFIG_TEST_BPF) += test_bpf.o
+obj-$(CONFIG_DRM) += drm_mm.o
test_dhry-objs := dhry_1.o dhry_2.o dhry_run.o
obj-$(CONFIG_TEST_DHRY) += test_dhry.o
obj-$(CONFIG_TEST_FIRMWARE) += test_firmware.o
diff --git a/drivers/gpu/drm/drm_mm.c b/lib/drm_mm.c
similarity index 96%
rename from drivers/gpu/drm/drm_mm.c
rename to lib/drm_mm.c
index 5ace481c1901..45ea9864ed2e 100644
--- a/drivers/gpu/drm/drm_mm.c
+++ b/lib/drm_mm.c
@@ -151,7 +151,7 @@ static void show_leaks(struct drm_mm *mm) { }
INTERVAL_TREE_DEFINE(struct drm_mm_node, rb,
u64, __subtree_last,
- START, LAST, static inline, drm_mm_interval_tree)
+ START, LAST, static inline __maybe_unused, drm_mm_interval_tree)
struct drm_mm_node *
__drm_mm_interval_first(const struct drm_mm *mm, u64 start, u64 last)
@@ -966,41 +966,3 @@ void drm_mm_takedown(struct drm_mm *mm)
show_leaks(mm);
}
EXPORT_SYMBOL(drm_mm_takedown);
-
-static u64 drm_mm_dump_hole(struct drm_printer *p, const struct drm_mm_node *entry)
-{
- u64 start, size;
-
- size = entry->hole_size;
- if (size) {
- start = drm_mm_hole_node_start(entry);
- drm_printf(p, "%#018llx-%#018llx: %llu: free\n",
- start, start + size, size);
- }
-
- return size;
-}
-/**
- * drm_mm_print - print allocator state
- * @mm: drm_mm allocator to print
- * @p: DRM printer to use
- */
-void drm_mm_print(const struct drm_mm *mm, struct drm_printer *p)
-{
- const struct drm_mm_node *entry;
- u64 total_used = 0, total_free = 0, total = 0;
-
- total_free += drm_mm_dump_hole(p, &mm->head_node);
-
- drm_mm_for_each_node(entry, mm) {
- drm_printf(p, "%#018llx-%#018llx: %llu: used\n", entry->start,
- entry->start + entry->size, entry->size);
- total_used += entry->size;
- total_free += drm_mm_dump_hole(p, entry);
- }
- total = total_free + total_used;
-
- drm_printf(p, "total: %llu, used %llu free %llu\n", total,
- total_used, total_free);
-}
-EXPORT_SYMBOL(drm_mm_print);
--
2.43.5
