struct kgsl_device *device = dev_priv->device;
char name[64];
int ret = 0, id;
+ struct kgsl_process_private *proc_priv = dev_priv->process_priv;
+
+ if (atomic_read(&proc_priv->ctxt_count) > KGSL_MAX_CONTEXTS_PER_PROC) {
+ KGSL_DRV_ERR(device,
+ "Per process context limit reached for pid %u",
+ dev_priv->process_priv->pid);
+ return -ENOSPC;
+ }
+
+ atomic_inc(&proc_priv->ctxt_count);
id = _kgsl_get_context_id(device);
if (id == -ENOSPC) {
KGSL_DRV_INFO(device,
"cannot have more than %zu contexts due to memstore limitation\n",
KGSL_MEMSTORE_MAX);
-
+ atomic_dec(&proc_priv->ctxt_count);
return id;
}
out:
if (ret) {
+ atomic_dec(&proc_priv->ctxt_count);
write_lock(&device->context_lock);
idr_remove(&dev_priv->device->context_idr, id);
write_unlock(&device->context_lock);
device->pwrctrl.constraint.type = KGSL_CONSTRAINT_NONE;
}
+ atomic_dec(&context->proc_priv->ctxt_count);
idr_remove(&device->context_idr, context->id);
context->id = KGSL_CONTEXT_INVALID;
}
#define KGSL_PRIORITY_MAX_RB_LEVELS 4
#define KGSL_MEMSTORE_MAX (KGSL_MEMSTORE_SIZE / \
sizeof(struct kgsl_devmemstore) - 1 - KGSL_PRIORITY_MAX_RB_LEVELS)
+#define KGSL_MAX_CONTEXTS_PER_PROC 200
#define MEMSTORE_RB_OFFSET(rb, field) \
KGSL_MEMSTORE_OFFSET(((rb)->id + KGSL_MEMSTORE_MAX), field)
-/* Copyright (c) 2002,2007-2017, The Linux Foundation. All rights reserved.
+/* Copyright (c) 2002,2007-2018, The Linux Foundation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 and
* @syncsource_idr: sync sources created by this process
* @syncsource_lock: Spinlock to protect the syncsource idr
* @fd_count: Counter for the number of FDs for this process
+ * @ctxt_count: Count for the number of contexts for this process
*/
struct kgsl_process_private {
unsigned long priv;
struct idr syncsource_idr;
spinlock_t syncsource_lock;
int fd_count;
+ atomic_t ctxt_count;
};
/**