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Merge "msm: kgsl: Fix list corruption in worker initialization of mem_entry"

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This commit is contained in:
qctecmdr 2021-09-03 04:59:00 -07:00 • committed by Gerrit - the friendly Code Review server
commit 52d4b09f35
2 changed files with 20 additions and 9 deletions
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20
drivers/gpu/msm/kgsl.c
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@ -239,20 +239,28 @@ const char *kgsl_context_type(int type)
return "ANY";
}
/* Scheduled by kgsl_mem_entry_put_deferred() */
static void _deferred_put(struct work_struct *work)
/* Scheduled by kgsl_mem_entry_destroy_deferred() */
static void _deferred_destroy(struct work_struct *work)
{
struct kgsl_mem_entry *entry =
container_of(work, struct kgsl_mem_entry, work);
kgsl_mem_entry_put(entry);
kgsl_mem_entry_destroy(&entry->refcount);
}
static void kgsl_mem_entry_destroy_deferred(struct kref *kref)
{
struct kgsl_mem_entry *entry =
container_of(kref, struct kgsl_mem_entry, refcount);
INIT_WORK(&entry->work, _deferred_destroy);
queue_work(kgsl_driver.mem_workqueue, &entry->work);
}
/* Use a worker to put the refcount on mem entry */
void kgsl_mem_entry_put_deferred(struct kgsl_mem_entry *entry)
{
INIT_WORK(&entry->work, _deferred_put);
queue_work(kgsl_driver.mem_workqueue, &entry->work);
if (entry)
kref_put(&entry->refcount, kgsl_mem_entry_destroy_deferred);
}
static struct kgsl_mem_entry *kgsl_mem_entry_create(void)

9
drivers/gpu/msm/kgsl.h
View file

@ -562,9 +562,12 @@ kgsl_mem_entry_put(struct kgsl_mem_entry *entry)
}
/**
* kgsl_mem_entry_put_deferred() - use a worker to put the refcount
* on mem entry from a sysfs handler or debugfs handler.
* @entry - The memory entry
* kgsl_mem_entry_put_deferred() - Puts refcount and triggers deferred
* mem_entry destroy when refcount is the last refcount.
* @entry: memory entry to be put.
*
* Use this to put a memory entry when we don't want to block
* the caller while destroying memory entry.
*/
void kgsl_mem_entry_put_deferred(struct kgsl_mem_entry *entry);