diff options
author | Joshua Bakita <jbakita@cs.unc.edu> | 2021-08-26 18:53:29 -0400 |
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committer | Joshua Bakita <jbakita@cs.unc.edu> | 2021-08-26 18:53:29 -0400 |
commit | 54e783959b5d3622556bbf34a3a7ad8e481d9e25 (patch) | |
tree | 3221f3d93c6a12d2098ddd6ef95a39b2c2b69347 /nvdebug_entry.c | |
parent | 5f661d8a5db3f7875f6bf36b4843a71fd08ecbea (diff) |
Use procfs instead of dmesg to print runlist
`cat /proc/runlist` to print the current runlist.
Also break nvdebug.c into nvdebug_entry.c, runlist.c, and
runlist_procfs.c.
Diffstat (limited to 'nvdebug_entry.c')
-rw-r--r-- | nvdebug_entry.c | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/nvdebug_entry.c b/nvdebug_entry.c new file mode 100644 index 0000000..148bd3f --- /dev/null +++ b/nvdebug_entry.c | |||
@@ -0,0 +1,40 @@ | |||
1 | /* Copyright 2021 Joshua Bakita | ||
2 | * SPDX-License-Identifier: MIT | ||
3 | */ | ||
4 | |||
5 | /* TODO | ||
6 | * - Add sysfs trigger for a preemption | ||
7 | */ | ||
8 | |||
9 | #include <linux/kernel.h> | ||
10 | #include <linux/module.h> | ||
11 | #include <linux/proc_fs.h> // So we can set up entries in /proc | ||
12 | |||
13 | #include "nvdebug.h" | ||
14 | |||
15 | // LIAR. But without this we can't use GPL-only exported symbols like | ||
16 | // platform_bus_type or bus_find_device_by_name... | ||
17 | MODULE_LICENSE("GPL"); | ||
18 | MODULE_AUTHOR("Joshua Bakita"); | ||
19 | MODULE_DESCRIPTION("A scheduling debugging module for NVIDIA GPUs"); | ||
20 | MODULE_SOFTDEP("pre: nvgpu"); // We only support the Jetson boards for now | ||
21 | |||
22 | extern const struct file_operations runlist_file_ops; | ||
23 | |||
24 | int __init nvdebug_init(void) { | ||
25 | struct proc_dir_entry *entry = proc_create("runlist", 0444, NULL, &runlist_file_ops); | ||
26 | if (!entry) { | ||
27 | remove_proc_entry("runlist", NULL); | ||
28 | printk(KERN_ERR "[nvdebug] Unable to initialize procfs entries!\n"); | ||
29 | return -ENOMEM; | ||
30 | } | ||
31 | return 0; | ||
32 | } | ||
33 | |||
34 | static void __exit nvdebug_exit(void) { | ||
35 | remove_proc_entry("runlist", NULL); | ||
36 | printk(KERN_INFO "[nvdebug] Exiting...\n"); | ||
37 | } | ||
38 | |||
39 | module_init(nvdebug_init); | ||
40 | module_exit(nvdebug_exit); | ||