mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-29 23:53:55 +08:00
68bc30bb9f
Exposing architecture specific per process information is useful for various reasons. An example is the AVX512 usage on x86 which is important for task placement for power/performance optimizations. Adding this information to the existing /prcc/pid/status file would be the obvious choise, but it has been agreed on that a explicit arch_status file is better in separating the generic and architecture specific information. [ tglx: Massage changelog ] Signed-off-by: Aubrey Li <aubrey.li@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Andrew Morton <akpm@linux-foundation.org> Cc: peterz@infradead.org Cc: hpa@zytor.com Cc: ak@linux.intel.com Cc: tim.c.chen@linux.intel.com Cc: dave.hansen@intel.com Cc: arjan@linux.intel.com Cc: adobriyan@gmail.com Cc: aubrey.li@intel.com Cc: linux-api@vger.kernel.org Cc: Andy Lutomirski <luto@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Tim Chen <tim.c.chen@linux.intel.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Linux API <linux-api@vger.kernel.org> Link: https://lkml.kernel.org/r/20190606012236.9391-1-aubrey.li@linux.intel.com
153 lines
6.2 KiB
C
153 lines
6.2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* The proc filesystem constants/structures
|
|
*/
|
|
#ifndef _LINUX_PROC_FS_H
|
|
#define _LINUX_PROC_FS_H
|
|
|
|
#include <linux/types.h>
|
|
#include <linux/fs.h>
|
|
|
|
struct proc_dir_entry;
|
|
struct seq_file;
|
|
struct seq_operations;
|
|
|
|
#ifdef CONFIG_PROC_FS
|
|
|
|
typedef int (*proc_write_t)(struct file *, char *, size_t);
|
|
|
|
extern void proc_root_init(void);
|
|
extern void proc_flush_task(struct task_struct *);
|
|
|
|
extern struct proc_dir_entry *proc_symlink(const char *,
|
|
struct proc_dir_entry *, const char *);
|
|
extern struct proc_dir_entry *proc_mkdir(const char *, struct proc_dir_entry *);
|
|
extern struct proc_dir_entry *proc_mkdir_data(const char *, umode_t,
|
|
struct proc_dir_entry *, void *);
|
|
extern struct proc_dir_entry *proc_mkdir_mode(const char *, umode_t,
|
|
struct proc_dir_entry *);
|
|
struct proc_dir_entry *proc_create_mount_point(const char *name);
|
|
|
|
struct proc_dir_entry *proc_create_seq_private(const char *name, umode_t mode,
|
|
struct proc_dir_entry *parent, const struct seq_operations *ops,
|
|
unsigned int state_size, void *data);
|
|
#define proc_create_seq_data(name, mode, parent, ops, data) \
|
|
proc_create_seq_private(name, mode, parent, ops, 0, data)
|
|
#define proc_create_seq(name, mode, parent, ops) \
|
|
proc_create_seq_private(name, mode, parent, ops, 0, NULL)
|
|
struct proc_dir_entry *proc_create_single_data(const char *name, umode_t mode,
|
|
struct proc_dir_entry *parent,
|
|
int (*show)(struct seq_file *, void *), void *data);
|
|
#define proc_create_single(name, mode, parent, show) \
|
|
proc_create_single_data(name, mode, parent, show, NULL)
|
|
|
|
extern struct proc_dir_entry *proc_create_data(const char *, umode_t,
|
|
struct proc_dir_entry *,
|
|
const struct file_operations *,
|
|
void *);
|
|
|
|
struct proc_dir_entry *proc_create(const char *name, umode_t mode, struct proc_dir_entry *parent, const struct file_operations *proc_fops);
|
|
extern void proc_set_size(struct proc_dir_entry *, loff_t);
|
|
extern void proc_set_user(struct proc_dir_entry *, kuid_t, kgid_t);
|
|
extern void *PDE_DATA(const struct inode *);
|
|
extern void *proc_get_parent_data(const struct inode *);
|
|
extern void proc_remove(struct proc_dir_entry *);
|
|
extern void remove_proc_entry(const char *, struct proc_dir_entry *);
|
|
extern int remove_proc_subtree(const char *, struct proc_dir_entry *);
|
|
|
|
struct proc_dir_entry *proc_create_net_data(const char *name, umode_t mode,
|
|
struct proc_dir_entry *parent, const struct seq_operations *ops,
|
|
unsigned int state_size, void *data);
|
|
#define proc_create_net(name, mode, parent, state_size, ops) \
|
|
proc_create_net_data(name, mode, parent, state_size, ops, NULL)
|
|
struct proc_dir_entry *proc_create_net_single(const char *name, umode_t mode,
|
|
struct proc_dir_entry *parent,
|
|
int (*show)(struct seq_file *, void *), void *data);
|
|
struct proc_dir_entry *proc_create_net_data_write(const char *name, umode_t mode,
|
|
struct proc_dir_entry *parent,
|
|
const struct seq_operations *ops,
|
|
proc_write_t write,
|
|
unsigned int state_size, void *data);
|
|
struct proc_dir_entry *proc_create_net_single_write(const char *name, umode_t mode,
|
|
struct proc_dir_entry *parent,
|
|
int (*show)(struct seq_file *, void *),
|
|
proc_write_t write,
|
|
void *data);
|
|
extern struct pid *tgid_pidfd_to_pid(const struct file *file);
|
|
|
|
#ifdef CONFIG_PROC_PID_ARCH_STATUS
|
|
/*
|
|
* The architecture which selects CONFIG_PROC_PID_ARCH_STATUS must
|
|
* provide proc_pid_arch_status() definition.
|
|
*/
|
|
int proc_pid_arch_status(struct seq_file *m, struct pid_namespace *ns,
|
|
struct pid *pid, struct task_struct *task);
|
|
#endif /* CONFIG_PROC_PID_ARCH_STATUS */
|
|
|
|
#else /* CONFIG_PROC_FS */
|
|
|
|
static inline void proc_root_init(void)
|
|
{
|
|
}
|
|
|
|
static inline void proc_flush_task(struct task_struct *task)
|
|
{
|
|
}
|
|
|
|
static inline struct proc_dir_entry *proc_symlink(const char *name,
|
|
struct proc_dir_entry *parent,const char *dest) { return NULL;}
|
|
static inline struct proc_dir_entry *proc_mkdir(const char *name,
|
|
struct proc_dir_entry *parent) {return NULL;}
|
|
static inline struct proc_dir_entry *proc_create_mount_point(const char *name) { return NULL; }
|
|
static inline struct proc_dir_entry *proc_mkdir_data(const char *name,
|
|
umode_t mode, struct proc_dir_entry *parent, void *data) { return NULL; }
|
|
static inline struct proc_dir_entry *proc_mkdir_mode(const char *name,
|
|
umode_t mode, struct proc_dir_entry *parent) { return NULL; }
|
|
#define proc_create_seq_private(name, mode, parent, ops, size, data) ({NULL;})
|
|
#define proc_create_seq_data(name, mode, parent, ops, data) ({NULL;})
|
|
#define proc_create_seq(name, mode, parent, ops) ({NULL;})
|
|
#define proc_create_single(name, mode, parent, show) ({NULL;})
|
|
#define proc_create_single_data(name, mode, parent, show, data) ({NULL;})
|
|
#define proc_create(name, mode, parent, proc_fops) ({NULL;})
|
|
#define proc_create_data(name, mode, parent, proc_fops, data) ({NULL;})
|
|
|
|
static inline void proc_set_size(struct proc_dir_entry *de, loff_t size) {}
|
|
static inline void proc_set_user(struct proc_dir_entry *de, kuid_t uid, kgid_t gid) {}
|
|
static inline void *PDE_DATA(const struct inode *inode) {BUG(); return NULL;}
|
|
static inline void *proc_get_parent_data(const struct inode *inode) { BUG(); return NULL; }
|
|
|
|
static inline void proc_remove(struct proc_dir_entry *de) {}
|
|
#define remove_proc_entry(name, parent) do {} while (0)
|
|
static inline int remove_proc_subtree(const char *name, struct proc_dir_entry *parent) { return 0; }
|
|
|
|
#define proc_create_net_data(name, mode, parent, ops, state_size, data) ({NULL;})
|
|
#define proc_create_net(name, mode, parent, state_size, ops) ({NULL;})
|
|
#define proc_create_net_single(name, mode, parent, show, data) ({NULL;})
|
|
|
|
static inline struct pid *tgid_pidfd_to_pid(const struct file *file)
|
|
{
|
|
return ERR_PTR(-EBADF);
|
|
}
|
|
|
|
#endif /* CONFIG_PROC_FS */
|
|
|
|
struct net;
|
|
|
|
static inline struct proc_dir_entry *proc_net_mkdir(
|
|
struct net *net, const char *name, struct proc_dir_entry *parent)
|
|
{
|
|
return proc_mkdir_data(name, 0, parent, net);
|
|
}
|
|
|
|
struct ns_common;
|
|
int open_related_ns(struct ns_common *ns,
|
|
struct ns_common *(*get_ns)(struct ns_common *ns));
|
|
|
|
/* get the associated pid namespace for a file in procfs */
|
|
static inline struct pid_namespace *proc_pid_ns(const struct inode *inode)
|
|
{
|
|
return inode->i_sb->s_fs_info;
|
|
}
|
|
|
|
#endif /* _LINUX_PROC_FS_H */
|