Merge from vendor branch Linux:

Import of Linux 2.2.12 subset (ipv4 stack and related)

1 files changed, 145 insertions, 0 deletions

diff --git a/pfinet/linux-src/include/linux/coda_proc.h b/pfinet/linux-src/include/linux/coda_proc.h
new file mode 100644
index 00000000..7c4ca8a0
--- /dev/null
+++ b/pfinet/linux-src/include/linux/coda_proc.h
@@ -0,0 +1,145 @@
+/*
+ * coda_statis.h
+ * 
+ * CODA operation statistics
+ *
+ * (c) March, 1998
+ * by Michihiro Kuramochi, Zhenyu Xia and Zhanyong Wan
+ * zhanyong.wan@yale.edu
+ *
+ */
+
+#ifndef _CODA_PROC_H
+#define _CODA_PROC_H
+
+void coda_sysctl_init(void);
+void coda_sysctl_clean(void);
+void coda_upcall_stats(int opcode, unsigned long jiffies);
+
+#include <linux/sysctl.h>
+#include <linux/coda_fs_i.h>
+#include <linux/coda.h>
+
+/* these four files are presented to show the result of the statistics:
+ *
+ *	/proc/fs/coda/vfs_stats
+ *		      upcall_stats
+ *		      permission_stats
+ *		      cache_inv_stats
+ *
+ * these four files are presented to reset the statistics to 0:
+ *
+ *	/proc/sys/coda/vfs_stats
+ *		       upcall_stats
+ *		       permission_stats
+ *		       cache_inv_stats
+ */
+
+/* VFS operation statistics */
+struct coda_vfs_stats 
+{
+	/* file operations */
+	int file_read;
+	int file_write;
+	int file_mmap;
+	int open;
+	int release;
+	int fsync;
+
+	/* dir operations */
+	int readdir;
+  
+	/* inode operations */
+	int create;
+	int lookup;
+	int link;
+	int unlink;
+	int symlink;
+	int mkdir;
+	int rmdir;
+	int rename;
+	int permission;
+	int readpage;
+
+	/* symlink operatoins*/
+	int follow_link;
+	int readlink;
+};
+
+struct coda_upcall_stats_entry 
+{
+  int count;
+  unsigned long time_sum;
+  unsigned long time_squared_sum;
+};
+
+
+
+/* cache hits for permissions statistics */
+struct coda_permission_stats 
+{
+	int count;
+	int hit_count;
+};
+
+/* cache invalidation statistics */
+struct coda_cache_inv_stats
+{
+	int flush;
+	int purge_user;
+	int zap_dir;
+	int zap_file;
+	int zap_vnode;
+	int purge_fid;
+	int replace;
+};
+
+/* these global variables hold the actual statistics data */
+extern struct coda_vfs_stats		coda_vfs_stat;
+extern struct coda_permission_stats	coda_permission_stat;
+extern struct coda_cache_inv_stats	coda_cache_inv_stat;
+extern int				coda_upcall_timestamping;
+
+/* reset statistics to 0 */
+void reset_coda_vfs_stats( void );
+void reset_coda_upcall_stats( void );
+void reset_coda_permission_stats( void );
+void reset_coda_cache_inv_stats( void );
+
+/* some utitlities to make it easier for you to do statistics for time */
+void do_time_stats( struct coda_upcall_stats_entry * pentry, 
+		    unsigned long jiffy );
+/*
+double get_time_average( const struct coda_upcall_stats_entry * pentry );
+double get_time_std_deviation( const struct coda_upcall_stats_entry * pentry );
+*/
+unsigned long get_time_average( const struct coda_upcall_stats_entry * pentry );
+unsigned long get_time_std_deviation( const struct coda_upcall_stats_entry * pentry );
+
+/* like coda_dointvec, these functions are to be registered in the ctl_table
+ * data structure for /proc/sys/... files 
+ */
+int do_reset_coda_vfs_stats( ctl_table * table, int write, struct file * filp,
+			     void * buffer, size_t * lenp );
+int do_reset_coda_upcall_stats( ctl_table * table, int write, 
+				struct file * filp, void * buffer, 
+				size_t * lenp );
+int do_reset_coda_permission_stats( ctl_table * table, int write, 
+				    struct file * filp, void * buffer, 
+				    size_t * lenp );
+int do_reset_coda_cache_inv_stats( ctl_table * table, int write, 
+				   struct file * filp, void * buffer, 
+				   size_t * lenp );
+
+/* these functions are called to form the content of /proc/fs/coda/... files */
+int coda_vfs_stats_get_info( char * buffer, char ** start, off_t offset,
+			     int length, int dummy );
+int coda_upcall_stats_get_info( char * buffer, char ** start, off_t offset,
+				int length, int dummy );
+int coda_permission_stats_get_info( char * buffer, char ** start, off_t offset,
+				    int length, int dummy );
+int coda_cache_inv_stats_get_info( char * buffer, char ** start, off_t offset,
+				   int length, int dummy );
+
+
+#endif /* _CODA_PROC_H */