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Commit dd59239a authored by Alexey Skidanov's avatar Alexey Skidanov Committed by Oded Gabbay
Browse files

amdkfd: init aperture once per process 



Since the user space may call open() more that once from the same process,
the aperture initialization should be moved from kfd_open()

Signed-off-by: default avatarAlexey Skidanov <Alexey.Skidanov@amd.com>
Reviewed-by: default avatarOded Gabbay <oded.gabbay@amd.com>
Signed-off-by: default avatarOded Gabbay <oded.gabbay@amd.com>
parent f1386fbc

drivers/gpu/drm/amd/amdkfd/kfd_chardev.c

+0 −4
Original line number Diff line number Diff line
@@ -121,13 +121,9 @@ static int kfd_open(struct inode *inode, struct file *filep) 
	if (IS_ERR(process))

		return PTR_ERR(process);



	process->is_32bit_user_mode = is_32bit_user_mode;



	dev_dbg(kfd_device, "process %d opened, compat mode (32 bit) - %d\n",

		process->pasid, process->is_32bit_user_mode);



	kfd_init_apertures(process);



	return 0;

}

drivers/gpu/drm/amd/amdkfd/kfd_flat_memory.c

+2 −4
Original line number Diff line number Diff line
@@ -299,13 +299,13 @@ int kfd_init_apertures(struct kfd_process *process) 
	struct kfd_dev *dev;

	struct kfd_process_device *pdd;



	mutex_lock(&process->mutex);



	/*Iterating over all devices*/

	while ((dev = kfd_topology_enum_kfd_devices(id)) != NULL &&

		id < NUM_OF_SUPPORTED_GPUS) {



		pdd = kfd_get_process_device_data(dev, process, 1);

		if (!pdd)

			return -1;



		/*

		 * For 64 bit process aperture will be statically reserved in
@@ -348,8 +348,6 @@ int kfd_init_apertures(struct kfd_process *process) 
		id++;

	}



	mutex_unlock(&process->mutex);



	return 0;

}

drivers/gpu/drm/amd/amdkfd/kfd_process.c

+9 −0
Original line number Diff line number Diff line
@@ -26,6 +26,8 @@ 
#include <linux/slab.h>

#include <linux/amd-iommu.h>

#include <linux/notifier.h>

#include <linux/compat.h>



struct mm_struct;



#include "kfd_priv.h"
@@ -285,8 +287,15 @@ static struct kfd_process *create_process(const struct task_struct *thread) 
	if (err != 0)

		goto err_process_pqm_init;



	/* init process apertures*/

	process->is_32bit_user_mode = is_compat_task();

	if (kfd_init_apertures(process) != 0)

		goto err_init_apretures;



	return process;



err_init_apretures:

	pqm_uninit(&process->pqm);

err_process_pqm_init:

	hash_del_rcu(&process->kfd_processes);

	synchronize_rcu();