Open source GPL/LGPL release

drivers/gpu/nvgpu/os/linux/debug_sched.c

@@ -0,0 +1,80 @@
+/*
+ * Copyright (C) 2017-2020 NVIDIA Corporation.  All rights reserved.
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * This program is distributed in the hope that 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.
+ *
+ */
+
+#include "debug_sched.h"
+#include "os_linux.h"
+#include <nvgpu/nvgpu_init.h>
+
+#include <linux/debugfs.h>
+#include <linux/seq_file.h>
+
+static int gk20a_sched_debugfs_show(struct seq_file *s, void *unused)
+{
+	struct gk20a *g = s->private;
+	struct nvgpu_sched_ctrl *sched = &g->sched_ctrl;
+	bool sched_busy = true;
+
+	int n = sched->bitmap_size / sizeof(u64);
+	int i;
+	int err;
+
+	err = gk20a_busy(g);
+	if (err)
+		return err;
+
+	if (nvgpu_mutex_tryacquire(&sched->busy_lock)) {
+		sched_busy = false;
+		nvgpu_mutex_release(&sched->busy_lock);
+	}
+
+	seq_printf(s, "control_locked=%d\n", sched->control_locked);
+	seq_printf(s, "busy=%d\n", sched_busy);
+	seq_printf(s, "bitmap_size=%zu\n", sched->bitmap_size);
+
+	nvgpu_mutex_acquire(&sched->status_lock);
+
+	seq_puts(s, "active_tsg_bitmap\n");
+	for (i = 0; i < n; i++)
+		seq_printf(s, "\t0x%016llx\n", sched->active_tsg_bitmap[i]);
+
+	seq_puts(s, "recent_tsg_bitmap\n");
+	for (i = 0; i < n; i++)
+		seq_printf(s, "\t0x%016llx\n", sched->recent_tsg_bitmap[i]);
+
+	nvgpu_mutex_release(&sched->status_lock);
+
+	gk20a_idle(g);
+
+	return 0;
+}
+
+static int gk20a_sched_debugfs_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, gk20a_sched_debugfs_show, inode->i_private);
+}
+
+static const struct file_operations gk20a_sched_debugfs_fops = {
+	.open		= gk20a_sched_debugfs_open,
+	.read		= seq_read,
+	.llseek		= seq_lseek,
+	.release	= single_release,
+};
+
+void gk20a_sched_debugfs_init(struct gk20a *g)
+{
+	struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
+
+	debugfs_create_file("sched_ctrl", S_IRUGO, l->debugfs,
+			g, &gk20a_sched_debugfs_fops);
+}