00977a59b9
Many struct file_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
68 lines
2.0 KiB
C
68 lines
2.0 KiB
C
/* internal.h: internal procfs definitions
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*
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* Copyright (C) 2004 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/proc_fs.h>
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struct vmalloc_info {
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unsigned long used;
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unsigned long largest_chunk;
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};
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#ifdef CONFIG_MMU
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#define VMALLOC_TOTAL (VMALLOC_END - VMALLOC_START)
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extern void get_vmalloc_info(struct vmalloc_info *vmi);
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#else
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#define VMALLOC_TOTAL 0UL
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#define get_vmalloc_info(vmi) \
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do { \
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(vmi)->used = 0; \
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(vmi)->largest_chunk = 0; \
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} while(0)
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extern int nommu_vma_show(struct seq_file *, struct vm_area_struct *);
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#endif
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extern void create_seq_entry(char *name, mode_t mode, const struct file_operations *f);
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extern int proc_exe_link(struct inode *, struct dentry **, struct vfsmount **);
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extern int proc_tid_stat(struct task_struct *, char *);
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extern int proc_tgid_stat(struct task_struct *, char *);
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extern int proc_pid_status(struct task_struct *, char *);
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extern int proc_pid_statm(struct task_struct *, char *);
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extern const struct file_operations proc_maps_operations;
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extern const struct file_operations proc_numa_maps_operations;
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extern const struct file_operations proc_smaps_operations;
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extern const struct file_operations proc_maps_operations;
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extern const struct file_operations proc_numa_maps_operations;
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extern const struct file_operations proc_smaps_operations;
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void free_proc_entry(struct proc_dir_entry *de);
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int proc_init_inodecache(void);
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static inline struct pid *proc_pid(struct inode *inode)
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{
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return PROC_I(inode)->pid;
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}
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static inline struct task_struct *get_proc_task(struct inode *inode)
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{
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return get_pid_task(proc_pid(inode), PIDTYPE_PID);
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}
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static inline int proc_fd(struct inode *inode)
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{
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return PROC_I(inode)->fd;
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}
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