gpu: nvgpu: move debugfs code to linux module

Since all debugfs code is Linux specific, remove
it from common code and move it to Linux module

Debugfs code is now divided into below
module specific files :

common/linux/debug.c
common/linux/debug_cde.c
common/linux/debug_ce.c
common/linux/debug_fifo.c
common/linux/debug_gr.c
common/linux/debug_mm.c
common/linux/debug_allocator.c
common/linux/debug_kmem.c
common/linux/debug_pmu.c
common/linux/debug_sched.c

Add corresponding header files for above modules too
And compile all of above files only if CONFIG_DEBUG_FS is set

Some more details of the changes made

- Move and rename gk20a/debug_gk20a.c to common/linux/debug.c
- Move and rename gk20a/debug_gk20a.h to include/nvgpu/debug.h

- Remove gm20b/debug_gm20b.c and gm20b/debug_gm20b.h and call
  gk20a_init_debug_ops() directly from gm20b_init_hal()

- Update all debug APIs to receive struct gk20a as parameter
  instead of receiving struct device pointer
- Update API gk20a_dmabuf_get_state() to receive struct gk20a
  pointer instead of struct device

- Include <nvgpu/debug.h> explicitly in all files where debug
  operations are used
- Remove "gk20a/platform_gk20a.h" include from HAL files
  which no longer need this include

- Add new API gk20a_debug_deinit() to deinitialize debugfs
  and call it from gk20a_remove()
- Move API gk20a_debug_dump_all_channel_status_ramfc() to
  gk20a/fifo_gk20a.c

Jira NVGPU-62

Change-Id: I076975d3d7f669bdbe9212fa33d98529377feeb6
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1488902
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Bharat Nihalani <bnihalani@nvidia.com>

5 files changed, 12 insertions, 70 deletions

diff --git a/drivers/gpu/nvgpu/common/mm/bitmap_allocator.c b/drivers/gpu/nvgpu/common/mm/bitmap_allocator.c
index 40ee199a..eae0475a 100644
--- a/drivers/gpu/nvgpu/common/mm/bitmap_allocator.c
+++ b/drivers/gpu/nvgpu/common/mm/bitmap_allocator.c
@@ -411,7 +411,9 @@ int nvgpu_bitmap_allocator_init(struct gk20a *g, struct nvgpu_allocator *__a,
         wmb();
         a->inited = true;
 
+#ifdef CONFIG_DEBUG_FS
         nvgpu_init_alloc_debug(g, __a);
+#endif
         alloc_dbg(__a, "New allocator: type      bitmap\n");
         alloc_dbg(__a, "               base      0x%llx\n", a->base);
         alloc_dbg(__a, "               bit_offs  0x%llx\n", a->bit_offs);
diff --git a/drivers/gpu/nvgpu/common/mm/buddy_allocator.c b/drivers/gpu/nvgpu/common/mm/buddy_allocator.c
index 34bc51df..0ef94c10 100644
--- a/drivers/gpu/nvgpu/common/mm/buddy_allocator.c
+++ b/drivers/gpu/nvgpu/common/mm/buddy_allocator.c
@@ -251,7 +251,9 @@ static void nvgpu_buddy_allocator_destroy(struct nvgpu_allocator *__a)
 
         alloc_lock(__a);
 
+#ifdef CONFIG_DEBUG_FS
         nvgpu_fini_alloc_debug(__a);
+#endif
 
         /*
          * Free the fixed allocs first.
@@ -1290,7 +1292,9 @@ int __nvgpu_buddy_allocator_init(struct gk20a *g, struct nvgpu_allocator *__a,
         wmb();
         a->initialized = 1;
 
+#ifdef CONFIG_DEBUG_FS
         nvgpu_init_alloc_debug(g, __a);
+#endif
         alloc_dbg(__a, "New allocator: type      buddy\n");
         alloc_dbg(__a, "               base      0x%llx\n", a->base);
         alloc_dbg(__a, "               size      0x%llx\n", a->length);
diff --git a/drivers/gpu/nvgpu/common/mm/lockless_allocator.c b/drivers/gpu/nvgpu/common/mm/lockless_allocator.c
index 234ae4a3..944b4b0f 100644
--- a/drivers/gpu/nvgpu/common/mm/lockless_allocator.c
+++ b/drivers/gpu/nvgpu/common/mm/lockless_allocator.c
@@ -99,7 +99,9 @@ static void nvgpu_lockless_alloc_destroy(struct nvgpu_allocator *a)
 {
         struct nvgpu_lockless_allocator *pa = a->priv;
 
+#ifdef CONFIG_DEBUG_FS
         nvgpu_fini_alloc_debug(a);
+#endif
 
         nvgpu_vfree(a->g, pa->next);
         nvgpu_kfree(nvgpu_alloc_to_gpu(a), pa);
@@ -191,7 +193,9 @@ int nvgpu_lockless_allocator_init(struct gk20a *g, struct nvgpu_allocator *__a,
         wmb();
         a->inited = true;
 
+#ifdef CONFIG_DEBUG_FS
         nvgpu_init_alloc_debug(g, __a);
+#endif
         alloc_dbg(__a, "New allocator: type          lockless\n");
         alloc_dbg(__a, "               base          0x%llx\n", a->base);
         alloc_dbg(__a, "               nodes         %d\n", a->nr_nodes);
diff --git a/drivers/gpu/nvgpu/common/mm/nvgpu_allocator.c b/drivers/gpu/nvgpu/common/mm/nvgpu_allocator.c
index 211b353b..1646d2b1 100644
--- a/drivers/gpu/nvgpu/common/mm/nvgpu_allocator.c
+++ b/drivers/gpu/nvgpu/common/mm/nvgpu_allocator.c
@@ -20,11 +20,6 @@
 
 #include "gk20a/gk20a.h"
 #include "gk20a/mm_gk20a.h"
-#ifdef CONFIG_DEBUG_FS
-#include "gk20a/platform_gk20a.h"
-#endif
-
-u32 nvgpu_alloc_tracing_on;
 
 u64 nvgpu_alloc_length(struct nvgpu_allocator *a)
 {
@@ -151,68 +146,3 @@ int __nvgpu_alloc_common_init(struct nvgpu_allocator *a, struct gk20a *g,
 
         return 0;
 }
-
-#ifdef CONFIG_DEBUG_FS
-void nvgpu_alloc_print_stats(struct nvgpu_allocator *__a,
-                             struct seq_file *s, int lock)
-{
-        __a->ops->print_stats(__a, s, lock);
-}
-
-static int __alloc_show(struct seq_file *s, void *unused)
-{
-        struct nvgpu_allocator *a = s->private;
-
-        nvgpu_alloc_print_stats(a, s, 1);
-
-        return 0;
-}
-
-static int __alloc_open(struct inode *inode, struct file *file)
-{
-        return single_open(file, __alloc_show, inode->i_private);
-}
-
-static const struct file_operations __alloc_fops = {
-        .open = __alloc_open,
-        .read = seq_read,
-        .llseek = seq_lseek,
-        .release = single_release,
-};
-#endif
-
-void nvgpu_init_alloc_debug(struct gk20a *g, struct nvgpu_allocator *a)
-{
-#ifdef CONFIG_DEBUG_FS
-        if (!g->debugfs_allocators)
-                return;
-
-        a->debugfs_entry = debugfs_create_file(a->name, S_IRUGO,
-                                               g->debugfs_allocators,
-                                               a, &__alloc_fops);
-#endif
-}
-
-void nvgpu_fini_alloc_debug(struct nvgpu_allocator *a)
-{
-#ifdef CONFIG_DEBUG_FS
-        if (!IS_ERR_OR_NULL(a->debugfs_entry))
-                debugfs_remove(a->debugfs_entry);
-#endif
-}
-
-#ifdef CONFIG_DEBUG_FS
-void nvgpu_alloc_debugfs_init(struct device *dev)
-{
-        struct gk20a_platform *platform = dev_get_drvdata(dev);
-        struct dentry *gpu_root = platform->debugfs;
-        struct gk20a *g = get_gk20a(dev);
-
-        g->debugfs_allocators = debugfs_create_dir("allocators", gpu_root);
-        if (IS_ERR_OR_NULL(g->debugfs_allocators))
-                return;
-
-        debugfs_create_u32("tracing", 0664, g->debugfs_allocators,
-                           &nvgpu_alloc_tracing_on);
-}
-#endif
diff --git a/drivers/gpu/nvgpu/common/mm/page_allocator.c b/drivers/gpu/nvgpu/common/mm/page_allocator.c
index 14b5da3c..3f4f3706 100644
--- a/drivers/gpu/nvgpu/common/mm/page_allocator.c
+++ b/drivers/gpu/nvgpu/common/mm/page_allocator.c
@@ -916,7 +916,9 @@ int nvgpu_page_allocator_init(struct gk20a *g, struct nvgpu_allocator *__a,
         if (err)
                 goto fail;
 
+#ifdef CONFIG_DEBUG_FS
         nvgpu_init_alloc_debug(g, __a);
+#endif
         palloc_dbg(a, "New allocator: type      page\n");
         palloc_dbg(a, "               base      0x%llx\n", a->base);
         palloc_dbg(a, "               size      0x%llx\n", a->length);