Messages in this thread Patch in this message | | | Date | Fri, 2 Jul 2004 03:53:42 -0700 (PDT) | From | Paul Jackson <> | Subject | [patch 8/8] cpusets v4 - One more hook, for /proc/<pid>/cpuset. |
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Add cpuset links to /proc, from each task to its cpuset.
Index: 2.6.7-mm5/fs/proc/base.c =================================================================== --- 2.6.7-mm5.orig/fs/proc/base.c 2004-07-01 19:30:10.000000000 -0700 +++ 2.6.7-mm5/fs/proc/base.c 2004-07-01 19:30:24.000000000 -0700 @@ -32,6 +32,7 @@ #include <linux/mount.h> #include <linux/security.h> #include <linux/ptrace.h> +#include <linux/cpuset.h> /* * For hysterical raisins we keep the same inumbers as in the old procfs. @@ -60,6 +61,9 @@ enum pid_directory_inos { PROC_TGID_MAPS, PROC_TGID_MOUNTS, PROC_TGID_WCHAN, +#ifdef CONFIG_CPUSETS + PROC_TGID_CPUSET, +#endif #ifdef CONFIG_SECURITY PROC_TGID_ATTR, PROC_TGID_ATTR_CURRENT, @@ -83,6 +87,9 @@ enum pid_directory_inos { PROC_TID_MAPS, PROC_TID_MOUNTS, PROC_TID_WCHAN, +#ifdef CONFIG_CPUSETS + PROC_TID_CPUSET, +#endif #ifdef CONFIG_SECURITY PROC_TID_ATTR, PROC_TID_ATTR_CURRENT, @@ -123,6 +130,9 @@ static struct pid_entry tgid_base_stuff[ #ifdef CONFIG_KALLSYMS E(PROC_TGID_WCHAN, "wchan", S_IFREG|S_IRUGO), #endif +#ifdef CONFIG_CPUSETS + E(PROC_TGID_CPUSET, "cpuset", S_IFREG|S_IRUGO), +#endif {0,0,NULL,0} }; static struct pid_entry tid_base_stuff[] = { @@ -145,6 +155,9 @@ static struct pid_entry tid_base_stuff[] #ifdef CONFIG_KALLSYMS E(PROC_TID_WCHAN, "wchan", S_IFREG|S_IRUGO), #endif +#ifdef CONFIG_CPUSETS + E(PROC_TID_CPUSET, "cpuset", S_IFREG|S_IRUGO), +#endif {0,0,NULL,0} }; @@ -767,6 +780,14 @@ static struct inode_operations proc_pid_ .follow_link = proc_pid_follow_link }; + +#ifdef CONFIG_CPUSETS +static int proc_pid_cpuset(struct task_struct *task, char *buffer) +{ + return proc_pid_cspath(task, buffer, PAGE_SIZE); +} +#endif /* CONFIG_CPUSETS */ + static int pid_alive(struct task_struct *p) { BUG_ON(p->pids[PIDTYPE_PID].pidptr != &p->pids[PIDTYPE_PID].pid); @@ -1375,6 +1396,13 @@ static struct dentry *proc_pident_lookup ei->op.proc_read = proc_pid_wchan; break; #endif +#ifdef CONFIG_CPUSETS + case PROC_TID_CPUSET: + case PROC_TGID_CPUSET: + inode->i_fop = &proc_info_file_operations; + ei->op.proc_read = proc_pid_cpuset; + break; +#endif default: printk("procfs: impossible type (%d)",p->type); iput(inode); Index: 2.6.7-mm5/fs/proc/root.c =================================================================== --- 2.6.7-mm5.orig/fs/proc/root.c 2004-07-01 19:30:10.000000000 -0700 +++ 2.6.7-mm5/fs/proc/root.c 2004-07-01 19:30:24.000000000 -0700 @@ -75,6 +75,9 @@ void __init proc_root_init(void) proc_device_tree_init(); #endif proc_bus = proc_mkdir("bus", 0); +#ifdef CONFIG_CPUSETS + proc_mkdir("cpusets", 0); +#endif } static struct dentry *proc_root_lookup(struct inode * dir, struct dentry * dentry, struct nameidata *nd) -- I won't rest till it's the best ... Programmer, Linux Scalability Paul Jackson <pj@sgi.com> 1.650.933.1373 - 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/
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