[PATCH v2 1/2] drm/amdgpu: do not keep debugfs dentry
Nirmoy Das
nirmoy.das at amd.com
Thu Feb 11 11:59:31 UTC 2021
Cleanup unnecessary debugfs dentries and surrounding functions.
v2: remove ttm_debugfs_entries array.
do not init variables.
Signed-off-by: Nirmoy Das <nirmoy.das at amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu.h | 4 --
drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c | 20 +++---
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c | 73 +++++++++------------
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h | 4 --
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c | 40 ++++-------
drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h | 4 --
drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h | 3 -
7 files changed, 52 insertions(+), 96 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu.h b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
index e0c797a5f739..e3d4d2dcb3a0 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu.h
@@ -797,10 +797,6 @@ struct amdgpu_device {
struct amdgpu_i2c_chan *i2c_bus[AMDGPU_MAX_I2C_BUS];
struct amdgpu_debugfs debugfs[AMDGPU_DEBUGFS_MAX_COMPONENTS];
unsigned debugfs_count;
-#if defined(CONFIG_DEBUG_FS)
- struct dentry *debugfs_preempt;
- struct dentry *debugfs_regs[AMDGPU_DEBUGFS_MAX_COMPONENTS];
-#endif
struct amdgpu_atif *atif;
struct amdgpu_atcs atcs;
struct mutex srbm_mutex;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
index 4c38c5771cbc..55db646d0ba4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_debugfs.c
@@ -1228,7 +1228,6 @@ int amdgpu_debugfs_regs_init(struct amdgpu_device *adev)
adev, debugfs_regs[i]);
if (!i && !IS_ERR_OR_NULL(ent))
i_size_write(ent->d_inode, adev->rmmio_size);
- adev->debugfs_regs[i] = ent;
}
return 0;
@@ -1591,22 +1590,21 @@ DEFINE_SIMPLE_ATTRIBUTE(fops_sclk_set, NULL,
int amdgpu_debugfs_init(struct amdgpu_device *adev)
{
+ struct dentry *ent;
int r, i;
- adev->debugfs_preempt =
- debugfs_create_file("amdgpu_preempt_ib", 0600,
- adev_to_drm(adev)->primary->debugfs_root, adev,
- &fops_ib_preempt);
- if (!(adev->debugfs_preempt)) {
+ ent = debugfs_create_file("amdgpu_preempt_ib", 0600,
+ adev_to_drm(adev)->primary->debugfs_root, adev,
+ &fops_ib_preempt);
+ if (!ent) {
DRM_ERROR("unable to create amdgpu_preempt_ib debugsfs file\n");
return -EIO;
}
- adev->smu.debugfs_sclk =
- debugfs_create_file("amdgpu_force_sclk", 0200,
- adev_to_drm(adev)->primary->debugfs_root, adev,
- &fops_sclk_set);
- if (!(adev->smu.debugfs_sclk)) {
+ ent = debugfs_create_file("amdgpu_force_sclk", 0200,
+ adev_to_drm(adev)->primary->debugfs_root, adev,
+ &fops_sclk_set);
+ if (!ent) {
DRM_ERROR("unable to create amdgpu_set_sclk debugsfs file\n");
return -EIO;
}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
index 1fb2a91ad30a..b504914519ce 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c
@@ -1137,16 +1137,17 @@ static int amdgpu_ras_sysfs_remove_all(struct amdgpu_device *adev)
*
*/
/* debugfs begin */
-static void amdgpu_ras_debugfs_create_ctrl_node(struct amdgpu_device *adev)
+struct dentry *amdgpu_ras_debugfs_create_ctrl_node(struct amdgpu_device *adev)
{
struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
+ struct dentry *dir;
struct drm_minor *minor = adev_to_drm(adev)->primary;
- con->dir = debugfs_create_dir(RAS_FS_NAME, minor->debugfs_root);
- debugfs_create_file("ras_ctrl", S_IWUGO | S_IRUGO, con->dir,
- adev, &amdgpu_ras_debugfs_ctrl_ops);
- debugfs_create_file("ras_eeprom_reset", S_IWUGO | S_IRUGO, con->dir,
- adev, &amdgpu_ras_debugfs_eeprom_ops);
+ dir = debugfs_create_dir(RAS_FS_NAME, minor->debugfs_root);
+ debugfs_create_file("ras_ctrl", S_IWUGO | S_IRUGO, dir, adev,
+ &amdgpu_ras_debugfs_ctrl_ops);
+ debugfs_create_file("ras_eeprom_reset", S_IWUGO | S_IRUGO, dir, adev,
+ &amdgpu_ras_debugfs_eeprom_ops);
/*
* After one uncorrectable error happens, usually GPU recovery will
@@ -1156,24 +1157,24 @@ static void amdgpu_ras_debugfs_create_ctrl_node(struct amdgpu_device *adev)
* ERREVENT_ATHUB_INTERRUPT generated. Normal GPU recovery routine
* will never be called.
*/
- debugfs_create_bool("auto_reboot", S_IWUGO | S_IRUGO, con->dir,
- &con->reboot);
+ debugfs_create_bool("auto_reboot", S_IWUGO | S_IRUGO, dir, &con->reboot);
/*
* User could set this not to clean up hardware's error count register
* of RAS IPs during ras recovery.
*/
- debugfs_create_bool("disable_ras_err_cnt_harvest", 0644,
- con->dir, &con->disable_ras_err_cnt_harvest);
+ debugfs_create_bool("disable_ras_err_cnt_harvest", 0644, dir,
+ &con->disable_ras_err_cnt_harvest);
+ return dir;
}
static void amdgpu_ras_debugfs_create(struct amdgpu_device *adev,
- struct ras_fs_if *head)
+ struct ras_fs_if *head,
+ struct dentry *dir)
{
- struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
struct ras_manager *obj = amdgpu_ras_find_obj(adev, &head->head);
- if (!obj || obj->ent)
+ if (!obj || !dir)
return;
get_obj(obj);
@@ -1182,14 +1183,14 @@ static void amdgpu_ras_debugfs_create(struct amdgpu_device *adev,
head->debugfs_name,
sizeof(obj->fs_data.debugfs_name));
- obj->ent = debugfs_create_file(obj->fs_data.debugfs_name,
- S_IWUGO | S_IRUGO, con->dir, obj,
- &amdgpu_ras_debugfs_ops);
+ debugfs_create_file(obj->fs_data.debugfs_name, S_IWUGO | S_IRUGO, dir,
+ obj, &amdgpu_ras_debugfs_ops);
}
void amdgpu_ras_debugfs_create_all(struct amdgpu_device *adev)
{
struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
+ struct dentry *dir;
struct ras_manager *obj;
struct ras_fs_if fs_info;
@@ -1200,7 +1201,7 @@ void amdgpu_ras_debugfs_create_all(struct amdgpu_device *adev)
if (!IS_ENABLED(CONFIG_DEBUG_FS) || !con)
return;
- amdgpu_ras_debugfs_create_ctrl_node(adev);
+ dir = amdgpu_ras_debugfs_create_ctrl_node(adev);
list_for_each_entry(obj, &con->head, node) {
if (amdgpu_ras_is_supported(adev, obj->head.block) &&
@@ -1208,34 +1209,11 @@ void amdgpu_ras_debugfs_create_all(struct amdgpu_device *adev)
sprintf(fs_info.debugfs_name, "%s_err_inject",
ras_block_str(obj->head.block));
fs_info.head = obj->head;
- amdgpu_ras_debugfs_create(adev, &fs_info);
+ amdgpu_ras_debugfs_create(adev, &fs_info, dir);
}
}
}
-static void amdgpu_ras_debugfs_remove(struct amdgpu_device *adev,
- struct ras_common_if *head)
-{
- struct ras_manager *obj = amdgpu_ras_find_obj(adev, head);
-
- if (!obj || !obj->ent)
- return;
-
- obj->ent = NULL;
- put_obj(obj);
-}
-
-static void amdgpu_ras_debugfs_remove_all(struct amdgpu_device *adev)
-{
- struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
- struct ras_manager *obj, *tmp;
-
- list_for_each_entry_safe(obj, tmp, &con->head, node) {
- amdgpu_ras_debugfs_remove(adev, &obj->head);
- }
-
- con->dir = NULL;
-}
/* debugfs end */
/* ras fs */
@@ -1282,8 +1260,17 @@ static int amdgpu_ras_fs_init(struct amdgpu_device *adev)
static int amdgpu_ras_fs_fini(struct amdgpu_device *adev)
{
- if (IS_ENABLED(CONFIG_DEBUG_FS))
- amdgpu_ras_debugfs_remove_all(adev);
+ struct amdgpu_ras *con = amdgpu_ras_get_context(adev);
+ struct ras_manager *con_obj, *ip_obj, *tmp;
+
+ if (IS_ENABLED(CONFIG_DEBUG_FS)) {
+ list_for_each_entry_safe(con_obj, tmp, &con->head, node) {
+ ip_obj = amdgpu_ras_find_obj(adev, &con_obj->head);
+ if (ip_obj)
+ put_obj(ip_obj);
+ }
+ }
+
amdgpu_ras_sysfs_remove_all(adev);
return 0;
}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h
index 762f5e46c007..aed0716efa5a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ras.h
@@ -318,8 +318,6 @@ struct amdgpu_ras {
uint32_t supported;
uint32_t features;
struct list_head head;
- /* debugfs */
- struct dentry *dir;
/* sysfs */
struct device_attribute features_attr;
struct bin_attribute badpages_attr;
@@ -395,8 +393,6 @@ struct ras_manager {
struct list_head node;
/* the device */
struct amdgpu_device *adev;
- /* debugfs */
- struct dentry *ent;
/* sysfs */
struct device_attribute sysfs_attr;
int attr_inuse;
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
index aaad9e304ad9..b140e6f8209b 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.c
@@ -1788,7 +1788,7 @@ static void amdgpu_ttm_training_data_block_init(struct amdgpu_device *adev)
(adev->gmc.mc_vram_size - GDDR6_MEM_TRAINING_OFFSET);
ctx->train_data_size =
GDDR6_MEM_TRAINING_DATA_SIZE_IN_BYTES;
-
+
DRM_DEBUG("train_data_size:%llx,p2c_train_data_offset:%llx,c2p_train_data_offset:%llx.\n",
ctx->train_data_size,
ctx->p2c_train_data_offset,
@@ -2530,18 +2530,6 @@ static const struct file_operations amdgpu_ttm_iomem_fops = {
.llseek = default_llseek
};
-static const struct {
- char *name;
- const struct file_operations *fops;
- int domain;
-} ttm_debugfs_entries[] = {
- { "amdgpu_vram", &amdgpu_ttm_vram_fops, TTM_PL_VRAM },
-#ifdef CONFIG_DRM_AMDGPU_GART_DEBUGFS
- { "amdgpu_gtt", &amdgpu_ttm_gtt_fops, TTM_PL_TT },
-#endif
- { "amdgpu_iomem", &amdgpu_ttm_iomem_fops, TTM_PL_SYSTEM },
-};
-
#endif
int amdgpu_ttm_debugfs_init(struct amdgpu_device *adev)
@@ -2550,22 +2538,20 @@ int amdgpu_ttm_debugfs_init(struct amdgpu_device *adev)
unsigned count;
struct drm_minor *minor = adev_to_drm(adev)->primary;
+ umode_t mode = S_IFREG | S_IRUGO;
struct dentry *ent, *root = minor->debugfs_root;
- for (count = 0; count < ARRAY_SIZE(ttm_debugfs_entries); count++) {
- ent = debugfs_create_file(
- ttm_debugfs_entries[count].name,
- S_IFREG | S_IRUGO, root,
- adev,
- ttm_debugfs_entries[count].fops);
- if (IS_ERR(ent))
- return PTR_ERR(ent);
- if (ttm_debugfs_entries[count].domain == TTM_PL_VRAM)
- i_size_write(ent->d_inode, adev->gmc.mc_vram_size);
- else if (ttm_debugfs_entries[count].domain == TTM_PL_TT)
- i_size_write(ent->d_inode, adev->gmc.gart_size);
- adev->mman.debugfs_entries[count] = ent;
- }
+ debugfs_create_file_size("amdgpu_vram", mode, root, adev,
+ &amdgpu_ttm_vram_fops, adev->gmc.mc_vram_size);
+#ifdef CONFIG_DRM_AMDGPU_GART_DEBUGFS
+ debugfs_create_file_size("amdgpu_gtt", mode, root, adev,
+ &amdgpu_ttm_gtt_fops, adev->gmc.gart_size);
+#endif
+
+ ent = debugfs_create_file("amdgpu_iomem", mode, root, adev,
+ &amdgpu_ttm_iomem_fops);
+ if (IS_ERR(ent))
+ return PTR_ERR(ent);
count = ARRAY_SIZE(amdgpu_ttm_debugfs_list);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
index 6c142455fc66..4df4cf2fd4dd 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ttm.h
@@ -68,10 +68,6 @@ struct amdgpu_mman {
bool initialized;
void __iomem *aper_base_kaddr;
-#if defined(CONFIG_DEBUG_FS)
- struct dentry *debugfs_entries[8];
-#endif
-
/* buffer handling */
const struct amdgpu_buffer_funcs *buffer_funcs;
struct amdgpu_ring *buffer_funcs_ring;
diff --git a/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h b/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
index 10b0624ade65..83147b7d836e 100644
--- a/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
+++ b/drivers/gpu/drm/amd/pm/inc/amdgpu_smu.h
@@ -439,9 +439,6 @@ struct smu_context
struct smu_baco_context smu_baco;
struct smu_temperature_range thermal_range;
void *od_settings;
-#if defined(CONFIG_DEBUG_FS)
- struct dentry *debugfs_sclk;
-#endif
struct smu_umd_pstate_table pstate_table;
uint32_t pstate_sclk;
--
2.30.0
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