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authorChen Yu <yu.c.chen@intel.com>2020-01-15 17:28:51 +0800
committerBorislav Petkov <bp@suse.de>2020-01-20 16:19:10 +0100
commite79f15a4598c1f3f3f7f3319ca308c63c91fdaf2 (patch)
treeddd82880c6aa0d623de777e89946d4d96d07884a /include/linux/resctrl.h
parent536a0d8e79fb928f2735db37dda95682b6754f9a (diff)
x86/resctrl: Add task resctrl information display
Monitoring tools that want to find out which resctrl control and monitor groups a task belongs to must currently read the "tasks" file in every group until they locate the process ID. Add an additional file /proc/{pid}/cpu_resctrl_groups to provide this information: 1) res: mon: resctrl is not available. 2) res:/ mon: Task is part of the root resctrl control group, and it is not associated to any monitor group. 3) res:/ mon:mon0 Task is part of the root resctrl control group and monitor group mon0. 4) res:group0 mon: Task is part of resctrl control group group0, and it is not associated to any monitor group. 5) res:group0 mon:mon1 Task is part of resctrl control group group0 and monitor group mon1. Signed-off-by: Chen Yu <yu.c.chen@intel.com> Signed-off-by: Borislav Petkov <bp@suse.de> Tested-by: Jinshi Chen <jinshi.chen@intel.com> Link: https://lkml.kernel.org/r/20200115092851.14761-1-yu.c.chen@intel.com
Diffstat (limited to 'include/linux/resctrl.h')
-rw-r--r--include/linux/resctrl.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/include/linux/resctrl.h b/include/linux/resctrl.h
new file mode 100644
index 000000000000..daf5cf64c6a6
--- /dev/null
+++ b/include/linux/resctrl.h
@@ -0,0 +1,14 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef _RESCTRL_H
+#define _RESCTRL_H
+
+#ifdef CONFIG_PROC_CPU_RESCTRL
+
+int proc_resctrl_show(struct seq_file *m,
+ struct pid_namespace *ns,
+ struct pid *pid,
+ struct task_struct *tsk);
+
+#endif
+
+#endif /* _RESCTRL_H */