Messages in this thread Patch in this message | | | From | sekharan@us ... | Date | Thu, 20 Apr 2006 19:24:45 -0700 | Subject | [RFC] [PATCH 06/12] Add proc interface to get class info of task |
| |
06/12: ckrm_tasksupport_procsupport
Adds an interface in /proc to get the class name of a task. --
Signed-Off-By: Chandra Seetharaman <sekharan@us.ibm.com> Signed-off-by: MAEDA Naoaki <maeda.naoaki@jp.fujitsu.com>
fs/proc/base.c | 19 +++++++++++++++++++ include/linux/ckrm.h | 2 ++ kernel/ckrm/ckrm_task.c | 32 +++++++++++++++++++++++++++++++- 3 files changed, 52 insertions(+), 1 deletion(-)
Index: linux2617-rc2/fs/proc/base.c =================================================================== --- linux2617-rc2.orig/fs/proc/base.c +++ linux2617-rc2/fs/proc/base.c @@ -70,6 +70,7 @@ #include <linux/ptrace.h> #include <linux/seccomp.h> #include <linux/cpuset.h> +#include <linux/ckrm.h> #include <linux/audit.h> #include <linux/poll.h> #include "internal.h" @@ -115,6 +116,9 @@ enum pid_directory_inos { #ifdef CONFIG_CPUSETS PROC_TGID_CPUSET, #endif +#ifdef CONFIG_CKRM + PROC_TGID_CKRM_CLASS, +#endif #ifdef CONFIG_SECURITY PROC_TGID_ATTR, PROC_TGID_ATTR_CURRENT, @@ -156,6 +160,9 @@ enum pid_directory_inos { #ifdef CONFIG_CPUSETS PROC_TID_CPUSET, #endif +#ifdef CONFIG_CKRM + PROC_TID_CKRM_CLASS, +#endif #ifdef CONFIG_SECURITY PROC_TID_ATTR, PROC_TID_ATTR_CURRENT, @@ -219,6 +226,9 @@ static struct pid_entry tgid_base_stuff[ #ifdef CONFIG_CPUSETS E(PROC_TGID_CPUSET, "cpuset", S_IFREG|S_IRUGO), #endif +#ifdef CONFIG_CKRM + E(PROC_TGID_CKRM_CLASS,"ckrm_class",S_IFREG|S_IRUGO), +#endif E(PROC_TGID_OOM_SCORE, "oom_score",S_IFREG|S_IRUGO), E(PROC_TGID_OOM_ADJUST,"oom_adj", S_IFREG|S_IRUGO|S_IWUSR), #ifdef CONFIG_AUDITSYSCALL @@ -261,6 +271,9 @@ static struct pid_entry tid_base_stuff[] #ifdef CONFIG_CPUSETS E(PROC_TID_CPUSET, "cpuset", S_IFREG|S_IRUGO), #endif +#ifdef CONFIG_CKRM + E(PROC_TID_CKRM_CLASS, "ckrm_class",S_IFREG|S_IRUGO), +#endif E(PROC_TID_OOM_SCORE, "oom_score",S_IFREG|S_IRUGO), E(PROC_TID_OOM_ADJUST, "oom_adj", S_IFREG|S_IRUGO|S_IWUSR), #ifdef CONFIG_AUDITSYSCALL @@ -1814,6 +1827,12 @@ static struct dentry *proc_pident_lookup inode->i_fop = &proc_cpuset_operations; break; #endif +#ifdef CONFIG_CKRM + case PROC_TID_CKRM_CLASS: + case PROC_TGID_CKRM_CLASS: + inode->i_fop = &proc_ckrm_class_operations; + break; +#endif case PROC_TID_OOM_SCORE: case PROC_TGID_OOM_SCORE: inode->i_fop = &proc_info_file_operations; Index: linux2617-rc2/kernel/ckrm/ckrm_task.c =================================================================== --- linux2617-rc2.orig/kernel/ckrm/ckrm_task.c +++ linux2617-rc2/kernel/ckrm/ckrm_task.c @@ -13,7 +13,8 @@ * (at your option) any later version. * */ -#include <linux/sched.h> +#include <linux/seq_file.h> +#include <linux/proc_fs.h> #include <linux/module.h> #include "ckrm_local.h" @@ -193,4 +194,33 @@ next_task: kref_put(&class->ref, ckrm_release_class); } +static int proc_ckrm_class_show(struct seq_file *m, void *v) +{ + struct task_struct *tsk = m->private; + struct ckrm_class *class = tsk->class; + + if (!class) + return -EINVAL; + + kref_get(&class->ref); + seq_puts(m, "/"); + if (!ckrm_is_class_root(class)) + seq_puts(m, class->name); + seq_putc(m, '\n'); + kref_put(&class->ref, ckrm_release_class); + return 0; +} + +static int ckrm_class_open(struct inode *inode, struct file *file) +{ + struct task_struct *tsk = PROC_I(inode)->task; + return single_open(file, proc_ckrm_class_show, tsk); +} + +struct file_operations proc_ckrm_class_operations = { + .open = ckrm_class_open, + .read = seq_read, + .llseek = seq_lseek, + .release = single_release, +}; EXPORT_SYMBOL_GPL(ckrm_setclass); Index: linux2617-rc2/include/linux/ckrm.h =================================================================== --- linux2617-rc2.orig/include/linux/ckrm.h +++ linux2617-rc2/include/linux/ckrm.h @@ -94,6 +94,8 @@ struct ckrm_class { struct list_head children; /* head of children */ }; +extern struct file_operations proc_ckrm_class_operations; + extern void ckrm_init_task(struct task_struct *); extern void ckrm_clear_task(struct task_struct *); extern void ckrm_init(void); --
---------------------------------------------------------------------- Chandra Seetharaman | Be careful what you choose.... - sekharan@us.ibm.com | .......you may get it. ---------------------------------------------------------------------- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |