From: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxx>
The loop which looks up the syncobj and copies the kperfmon ids is
identical so lets move it to a helper.
The only change is replacing copy_from_user with get_user when copying a
scalar.
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxxx>
---
drivers/gpu/drm/v3d/v3d_submit.c | 152 ++++++++++++++-----------------
1 file changed, 68 insertions(+), 84 deletions(-)
diff --git a/drivers/gpu/drm/v3d/v3d_submit.c b/drivers/gpu/drm/v3d/v3d_submit.c
index 3838ebade45d..ce56e31a027d 100644
--- a/drivers/gpu/drm/v3d/v3d_submit.c
+++ b/drivers/gpu/drm/v3d/v3d_submit.c
@@ -644,15 +644,64 @@ v3d_get_cpu_copy_query_results_params(struct drm_file *file_priv,
return err;
}
+static int
+v3d_copy_query_info(struct v3d_performance_query_info *query_info,
+ unsigned int count,
+ unsigned int nperfmons,
+ u32 __user *syncs,
+ u64 __user *kperfmon_ids,
+ struct drm_file *file_priv)
+{
+ unsigned int i, j;
+ int err;
+
+ for (i = 0; i < count; i++) {
+ struct v3d_performance_query *query = &query_info->queries[i];
+ u32 __user *ids_pointer;
+ u32 sync, id;
+ u64 ids;
+
+ if (get_user(sync, syncs++)) {
+ err = -EFAULT;
+ goto error;
+ }
+
+ if (get_user(ids, kperfmon_ids++)) {
+ err = -EFAULT;
+ goto error;
+ }
+
+ ids_pointer = u64_to_user_ptr(ids);
+
+ for (j = 0; j < nperfmons; j++) {
+ if (get_user(id, ids_pointer++)) {
+ err = -EFAULT;
+ goto error;
+ }
+
+ query->kperfmon_ids[j] = id;
+ }
+
+ query->syncobj = drm_syncobj_find(file_priv, sync);
+ if (!query->syncobj) {
+ err = -ENOENT;
+ goto error;
+ }
+ }
+
+ return 0;
+
+error:
+ v3d_performance_query_info_free(query_info, i);
+ return err;
+}
+
static int
v3d_get_cpu_reset_performance_params(struct drm_file *file_priv,
struct drm_v3d_extension __user *ext,
struct v3d_cpu_job *job)
{
- u32 __user *syncs;
- u64 __user *kperfmon_ids;
struct drm_v3d_reset_performance_query reset;
- unsigned int i, j;
int err;
if (!job) {
@@ -679,50 +728,19 @@ v3d_get_cpu_reset_performance_params(struct drm_file *file_priv,
if (!job->performance_query.queries)
return -ENOMEM;
- syncs = u64_to_user_ptr(reset.syncs);
- kperfmon_ids = u64_to_user_ptr(reset.kperfmon_ids);
+ err = v3d_copy_query_info(&job->performance_query,
+ reset.count,
+ reset.nperfmons,
+ u64_to_user_ptr(reset.syncs),
+ u64_to_user_ptr(reset.kperfmon_ids),
+ file_priv);
+ if (err)
+ return err;
- for (i = 0; i < reset.count; i++) {
- u32 sync;
- u64 ids;
- u32 __user *ids_pointer;
- u32 id;
-
- if (copy_from_user(&sync, syncs++, sizeof(sync))) {
- err = -EFAULT;
- goto error;
- }
-
- if (copy_from_user(&ids, kperfmon_ids++, sizeof(ids))) {
- err = -EFAULT;
- goto error;
- }
-
- ids_pointer = u64_to_user_ptr(ids);
-
- for (j = 0; j < reset.nperfmons; j++) {
- if (copy_from_user(&id, ids_pointer++, sizeof(id))) {
- err = -EFAULT;
- goto error;
- }
-
- job->performance_query.queries[i].kperfmon_ids[j] = id;
- }
-
- job->performance_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync);
- if (!job->performance_query.queries[i].syncobj) {
- err = -ENOENT;
- goto error;
- }
- }
job->performance_query.count = reset.count;
job->performance_query.nperfmons = reset.nperfmons;
return 0;
-
-error:
- v3d_performance_query_info_free(&job->performance_query, i);
- return err;
}
static int
@@ -730,10 +748,7 @@ v3d_get_cpu_copy_performance_query_params(struct drm_file *file_priv,
struct drm_v3d_extension __user *ext,
struct v3d_cpu_job *job)
{
- u32 __user *syncs;
- u64 __user *kperfmon_ids;
struct drm_v3d_copy_performance_query copy;
- unsigned int i, j;
int err;
if (!job) {
@@ -763,42 +778,15 @@ v3d_get_cpu_copy_performance_query_params(struct drm_file *file_priv,
if (!job->performance_query.queries)
return -ENOMEM;
- syncs = u64_to_user_ptr(copy.syncs);
- kperfmon_ids = u64_to_user_ptr(copy.kperfmon_ids);
+ err = v3d_copy_query_info(&job->performance_query,
+ copy.count,
+ copy.nperfmons,
+ u64_to_user_ptr(copy.syncs),
+ u64_to_user_ptr(copy.kperfmon_ids),
+ file_priv);
+ if (err)
+ return err;
- for (int i = 0; i < copy.count; i++) {
- u32 sync;
- u64 ids;
- u32 __user *ids_pointer;
- u32 id;
-
- if (copy_from_user(&sync, syncs++, sizeof(sync))) {
- err = -EFAULT;
- goto error;
- }
-
- if (copy_from_user(&ids, kperfmon_ids++, sizeof(ids))) {
- err = -EFAULT;
- goto error;
- }
-
- ids_pointer = u64_to_user_ptr(ids);
-
- for (j = 0; j < copy.nperfmons; j++) {
- if (copy_from_user(&id, ids_pointer++, sizeof(id))) {
- err = -EFAULT;
- goto error;
- }
-
- job->performance_query.queries[i].kperfmon_ids[j] = id;
- }
-
- job->performance_query.queries[i].syncobj = drm_syncobj_find(file_priv, sync);
- if (!job->performance_query.queries[i].syncobj) {
- err = -ENOENT;
- goto error;
- }
- }
job->performance_query.count = copy.count;
job->performance_query.nperfmons = copy.nperfmons;
job->performance_query.ncounters = copy.ncounters;
@@ -810,10 +798,6 @@ v3d_get_cpu_copy_performance_query_params(struct drm_file *file_priv,
job->copy.stride = copy.stride;
return 0;
-
-error:
- v3d_performance_query_info_free(&job->performance_query, i);
- return err;
}
/* Whenever userspace sets ioctl extensions, v3d_get_extensions parses data
--
2.44.0
