A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-07 12:25:00 -04:00
Code Issues Projects Releases Packages Wiki Activity

Merge "msm: kgsl: Retry process private open in a special failure case"

Browse source
This commit is contained in:
qctecmdr 2021-07-09 06:01:37 -07:00 • committed by Gerrit - the friendly Code Review server
commit ddbef40a73
1 changed files with 32 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

37
drivers/gpu/msm/kgsl.c
View file

@ -6,6 +6,7 @@
#include <uapi/linux/sched/types.h>
#include <linux/ctype.h>
#include <linux/debugfs.h>
#include <linux/delay.h>
#include <linux/dma-buf.h>
#include <linux/fdtable.h>
#include <linux/io.h>
@ -933,9 +934,15 @@ static struct kgsl_process_private *kgsl_process_private_new(
/* Search in the process list */
list_for_each_entry(private, &kgsl_driver.process_list, list) {
if (private->pid == cur_pid) {
if (!kgsl_process_private_get(private)) {
private = ERR_PTR(-EINVAL);
}
if (!kgsl_process_private_get(private))
/*
* This will happen only if refcount is zero
* i.e. destroy is triggered but didn't complete
* yet. Return -EEXIST to indicate caller that
* destroy is pending to allow caller to take
* appropriate action.
*/
private = ERR_PTR(-EEXIST);
/*
* We need to hold only one reference to the PID for
* each process struct to avoid overflowing the
@ -1043,8 +1050,7 @@ static void kgsl_process_private_close(struct kgsl_device_private *dev_priv,
kgsl_process_private_put(private);
}
static struct kgsl_process_private *kgsl_process_private_open(
static struct kgsl_process_private *_process_private_open(
struct kgsl_device *device)
{
struct kgsl_process_private *private;
@ -1062,6 +1068,27 @@ done:
return private;
}
static struct kgsl_process_private *kgsl_process_private_open(
struct kgsl_device *device)
{
struct kgsl_process_private *private;
int i;
private = _process_private_open(device);
/*
* If we get error and error is -EEXIST that means previous process
* private destroy is triggered but didn't complete. Retry creating
* process private after sometime to allow previous destroy to complete.
*/
for (i = 0; (PTR_ERR_OR_ZERO(private) == -EEXIST) && (i < 5); i++) {
usleep_range(10, 100);
private = _process_private_open(device);
}
return private;
}
int kgsl_gpu_frame_count(pid_t pid, u64 *frame_count)
{
struct kgsl_process_private *p;