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Open source GPL/LGPL release

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svcmobrel-release
2022-07-21 16:03:29 -07:00
commit f338182221
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91
drivers/gpu/nvgpu/os/linux/ecc_sysfs.c Normal file
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/*
* Copyright (c) 2018-2021, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <nvgpu/ecc.h>
#include <nvgpu/gk20a.h>
#include "os_linux.h"
int nvgpu_ecc_sysfs_init(struct gk20a *g)
{
struct device *dev = dev_from_gk20a(g);
struct nvgpu_ecc *ecc = &g->ecc;
struct dev_ext_attribute *attr;
struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
struct nvgpu_ecc_stat *stat;
int i = 0, err;
nvgpu_mutex_acquire(&ecc->stats_lock);
attr = nvgpu_kzalloc(g, sizeof(*attr) * ecc->stats_count);
if (!attr) {
nvgpu_mutex_release(&ecc->stats_lock);
return -ENOMEM;
}
nvgpu_list_for_each_entry(stat,
&ecc->stats_list, nvgpu_ecc_stat, node) {
if (i >= ecc->stats_count) {
err = -EINVAL;
nvgpu_err(g, "stats_list longer than stats_count %d",
ecc->stats_count);
break;
}
sysfs_attr_init(&attr[i].attr.attr);
attr[i].attr.attr.name = stat->name;
attr[i].attr.attr.mode = VERIFY_OCTAL_PERMISSIONS(S_IRUGO);
attr[i].var = &stat->counter;
attr[i].attr.show = device_show_int;
err = device_create_file(dev, &attr[i].attr);
if (err) {
nvgpu_err(g, "sysfs node create failed for %s\n",
stat->name);
break;
}
i++;
}
nvgpu_mutex_release(&ecc->stats_lock);
if (err) {
while (i-- > 0)
device_remove_file(dev, &attr[i].attr);
nvgpu_kfree(g, attr);
return err;
}
l->ecc_attrs = attr;
return 0;
}
void nvgpu_ecc_sysfs_remove(struct gk20a *g)
{
struct device *dev = dev_from_gk20a(g);
struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
struct nvgpu_ecc *ecc = &g->ecc;
int i;
nvgpu_mutex_acquire(&ecc->stats_lock);
for (i = 0; i < ecc->stats_count; i++)
device_remove_file(dev, &l->ecc_attrs[i].attr);
nvgpu_mutex_release(&ecc->stats_lock);
nvgpu_kfree(g, l->ecc_attrs);
l->ecc_attrs = NULL;
}