patch-2.2.17 linux/fs/coda/stats.c

• Lines: 417
• Date: Thu Jan 1 01:00:00 1970
• Orig file: v2.2.16/fs/coda/stats.c
• Orig date: Mon Sep 4 18:37:09 2000

diff -u --recursive --new-file v2.2.16/fs/coda/stats.c linux/fs/coda/stats.c
@@ -1,416 +0,0 @@
-/*
- * stats.c
- * 
- * CODA operation statistics
- *
- * (c) March, 1998 Zhanyong Wan <zhanyong.wan@yale.edu>
- *
- */
-
-#include <linux/sched.h>
-#include <linux/mm.h>
-#include <linux/sysctl.h>
-#include <linux/swapctl.h>
-#include <linux/proc_fs.h>
-#include <linux/malloc.h>
-#include <linux/stat.h>
-#include <linux/ctype.h>
-#include <asm/bitops.h>
-#include <asm/segment.h>
-#include <asm/uaccess.h>
-#include <linux/utsname.h>
-
-#include <linux/coda.h>
-#include <linux/coda_linux.h>
-#include <linux/coda_fs_i.h>
-#include <linux/coda_psdev.h>
-#include <linux/coda_cache.h>
-#include <linux/coda_proc.h>
-
-struct coda_vfs_stats		coda_vfs_stat;
-struct coda_permission_stats	coda_permission_stat;
-struct coda_cache_inv_stats	coda_cache_inv_stat;
-struct coda_upcall_stats_entry coda_upcall_stat[CODA_NCALLS];
-
-/* keep this in sync with coda.h! */
-char *coda_upcall_names[] = {
-	"totals      ",   /*  0 */
-	"noop        ",   /*  1 */
-	"root        ",   /*  2 */
-	"sync        ",   /*  3 */
-	"open        ",   /*  4 */
-	"close       ",   /*  5 */
-	"ioctl       ",   /*  6 */
-	"getattr     ",   /*  7 */
-	"setattr     ",   /*  8 */
-	"access      ",   /*  9 */
-	"lookup      ",   /* 10 */
-	"create      ",   /* 11 */
-	"remove      ",   /* 12 */
-	"link        ",   /* 13 */
-	"rename      ",   /* 14 */
-	"mkdir       ",   /* 15 */
-	"rmdir       ",   /* 16 */
-	"readdir     ",   /* 17 */
-	"symlink     ",   /* 18 */
-	"readlink    ",   /* 19 */
-	"fsync       ",   /* 20 */
-	"inactive    ",   /* 21 */
-	"vget        ",   /* 22 */
-	"signal      ",   /* 23 */
-	"replace     ",   /* 24 */
-	"flush       ",   /* 25 */
-	"purgeuser   ",   /* 26 */
-	"zapfile     ",   /* 27 */
-	"zapdir      ",   /* 28 */
-	"zapvnode    ",   /* 28 */
-	"purgefid    ",   /* 30 */
-	"open_by_path"    /* 31 */
-};
-
-
-
-
-void reset_coda_vfs_stats( void )
-{
-	memset( &coda_vfs_stat, 0, sizeof( coda_vfs_stat ) );
-}
-
-#if 0
-static void reset_upcall_entry( struct coda_upcall_stats_entry * pentry )
-{
-	pentry->count = 0;
-	pentry->time_sum = pentry->time_squared_sum = 0;
-}
-#endif
-
-void reset_coda_upcall_stats( void )
-{
-	memset( &coda_upcall_stat, 0, sizeof( coda_upcall_stat ) );
-}
-
-void reset_coda_permission_stats( void )
-{
-	memset( &coda_permission_stat, 0, sizeof( coda_permission_stat ) );
-}
-
-void reset_coda_cache_inv_stats( void )
-{
-	memset( &coda_cache_inv_stat, 0, sizeof( coda_cache_inv_stat ) );
-}
-
-
-void do_time_stats( struct coda_upcall_stats_entry * pentry, 
-		    unsigned long runtime )
-{
-	
-	unsigned long time = runtime * 1000 /HZ;	/* time in ms */
-	CDEBUG(D_SPECIAL, "time: %ld\n", time);
-
-	if ( pentry->count == 0 ) {
-		pentry->time_sum = pentry->time_squared_sum = 0;
-	}
-	
-	pentry->count++;
-	pentry->time_sum += time;
-	pentry->time_squared_sum += time*time;
-}
-
-
-
-void coda_upcall_stats(int opcode, long unsigned runtime) 
-{
-	struct coda_upcall_stats_entry * pentry;
-	
-	if ( opcode < 0 || opcode > CODA_NCALLS - 1) {
-		printk("Nasty opcode %d passed to coda_upcall_stats\n",
-		       opcode);
-		return;
-	}
-		
-	pentry = &coda_upcall_stat[opcode];
-	do_time_stats(pentry, runtime);
-
-        /* fill in the totals */
-	pentry = &coda_upcall_stat[0];
-	do_time_stats(pentry, runtime);
-
-}
-
-unsigned long get_time_average( const struct coda_upcall_stats_entry * pentry )
-{
-	return ( pentry->count == 0 ) ? 0 : pentry->time_sum / pentry->count;
-}
-
-static inline unsigned long absolute( unsigned long x )
-{
-	return x >= 0 ? x : -x;
-}
-
-static unsigned long sqr_root( unsigned long x )
-{
-	unsigned long y = x, r;
-	int n_bit = 0;
-  
-	if ( x == 0 )
-		return 0;
-	if ( x < 0)
-		x = -x;
-
-	while ( y ) {
-		y >>= 1;
-		n_bit++;
-	}
-  
-	r = 1 << (n_bit/2);
-  
-	while ( 1 ) {
-		r = (r + x/r)/2;
-		if ( r*r <= x && x < (r+1)*(r+1) )
-			break;
-	}
-  
-	return r;
-}
-
-unsigned long get_time_std_deviation( const struct coda_upcall_stats_entry * pentry )
-{
-	unsigned long time_avg;
-  
-	if ( pentry->count <= 1 )
-		return 0;
-  
-	time_avg = get_time_average( pentry );
-	return 
-	        sqr_root( (pentry->time_squared_sum / pentry->count) - 
-			    time_avg * time_avg );
-}
-
-int do_reset_coda_vfs_stats( ctl_table * table, int write, struct file * filp,
-			     void * buffer, size_t * lenp )
-{
-	if ( write ) {
-		reset_coda_vfs_stats();
-	}
-  
-	*lenp = 0;
-	return 0;
-}
-
-int do_reset_coda_upcall_stats( ctl_table * table, int write, 
-				struct file * filp, void * buffer, 
-				size_t * lenp )
-{
-	if ( write ) {
-		reset_coda_upcall_stats();
-	}
-  
-	*lenp = 0;
-	return 0;
-}
-
-int do_reset_coda_permission_stats( ctl_table * table, int write, 
-				    struct file * filp, void * buffer, 
-				    size_t * lenp )
-{
-	if ( write ) {
-		reset_coda_permission_stats();
-	}
-  
-	*lenp = 0;
-	return 0;
-}
-
-int do_reset_coda_cache_inv_stats( ctl_table * table, int write, 
-				   struct file * filp, void * buffer, 
-				   size_t * lenp )
-{
-	if ( write ) {
-		reset_coda_cache_inv_stats();
-	}
-  
-	*lenp = 0;
-	return 0;
-}
-
-int coda_vfs_stats_get_info( char * buffer, char ** start, off_t offset,
-			     int length, int dummy )
-{
-	int len=0;
-	off_t begin;
-	struct coda_vfs_stats * ps = & coda_vfs_stat;
-  
-  /* this works as long as we are below 1024 characters! */
-	len += sprintf( buffer,
-			"Coda VFS statistics\n"
-			"===================\n\n"
-			"File Operations:\n"
-			"\tfile_read\t%9d\n"
-			"\tfile_write\t%9d\n"
-			"\tfile_mmap\t%9d\n"
-			"\topen\t\t%9d\n"
-			"\trelase\t\t%9d\n"
-			"\tfsync\t\t%9d\n\n"
-			"Dir Operations:\n"
-			"\treaddir\t\t%9d\n\n"
-			"Inode Operations\n"
-			"\tcreate\t\t%9d\n"
-			"\tlookup\t\t%9d\n"
-			"\tlink\t\t%9d\n"
-			"\tunlink\t\t%9d\n"
-			"\tsymlink\t\t%9d\n"
-			"\tmkdir\t\t%9d\n"
-			"\trmdir\t\t%9d\n"
-			"\trename\t\t%9d\n"
-			"\tpermission\t%9d\n"
-			"\treadpage\t%9d\n",
-
-			/* file operations */
-			ps->file_read,
-			ps->file_write,
-			ps->file_mmap,
-			ps->open,
-			ps->release,
-			ps->fsync,
-
-			/* dir operations */
-			ps->readdir,
-		  
-			/* inode operations */
-			ps->create,
-			ps->lookup,
-			ps->link,
-			ps->unlink,
-			ps->symlink,
-			ps->mkdir,
-			ps->rmdir,
-			ps->rename,
-			ps->permission,
-			ps->readpage );
-  
-	begin = offset;
-	*start = buffer + begin;
-	len -= begin;
-
-	if ( len > length )
-		len = length;
-	if ( len < 0 )
-		len = 0;
-
-	return len;
-}
-
-int coda_upcall_stats_get_info( char * buffer, char ** start, off_t offset,
-				int length, int dummy )
-{
-	int len=0;
-	int i;
-	off_t begin;
-	off_t pos = 0;
-	char tmpbuf[80];
-	int tmplen = 0;
-
-	ENTRY;
-	/* this works as long as we are below 1024 characters! */
-	if ( offset < 80 ) 
-		len += sprintf( buffer,"%-79s\n",	"Coda upcall statistics");
-	if ( offset < 160) 
-		len += sprintf( buffer + len,"%-79s\n",	"======================");
-	if ( offset < 240) 
-		len += sprintf( buffer + len,"%-79s\n",	"upcall\t\t    count\tavg time(ms)\tstd deviation(ms)");
-	if ( offset < 320) 
-		len += sprintf( buffer + len,"%-79s\n",	"------\t\t    -----\t------------\t-----------------");
-	pos = 320; 
-	for ( i = 0 ; i < CODA_NCALLS ; i++ ) {
-		tmplen += sprintf(tmpbuf,"%s\t%9d\t%10ld\t%10ld", 
-				  coda_upcall_names[i],
-				  coda_upcall_stat[i].count, 
-				  get_time_average(&coda_upcall_stat[i]),
-				  coda_upcall_stat[i].time_squared_sum);
-		pos += 80;
-		if ( pos < offset ) 
-			continue; 
-		len += sprintf(buffer + len, "%-79s\n", tmpbuf);
-		if ( len >= length ) 
-			break; 
-	}
-  
-	begin = len- (pos - offset);
-	*start = buffer + begin;
-	len -= begin;
-
-	if ( len > length )
-		len = length;
-	if ( len < 0 )
-		len = 0;
-	EXIT;
-	return len;
-}
-
-int coda_permission_stats_get_info( char * buffer, char ** start, off_t offset,
-				    int length, int dummy )
-{
-	int len=0;
-	off_t begin;
-	struct coda_permission_stats * ps = & coda_permission_stat;
-  
-	/* this works as long as we are below 1024 characters! */
-	len += sprintf( buffer,
-			"Coda permission statistics\n"
-			"==========================\n\n"
-			"count\t\t%9d\n"
-			"hit count\t%9d\n",
-
-			ps->count,
-			ps->hit_count );
-  
-	begin = offset;
-	*start = buffer + begin;
-	len -= begin;
-
-	if ( len > length )
-		len = length;
-	if ( len < 0 )
-		len = 0;
-
-	return len;
-}
-
-int coda_cache_inv_stats_get_info( char * buffer, char ** start, off_t offset,
-				   int length, int dummy )
-{
-	int len=0;
-	off_t begin;
-	struct coda_cache_inv_stats * ps = & coda_cache_inv_stat;
-  
-	/* this works as long as we are below 1024 characters! */
-	len += sprintf( buffer,
-			"Coda cache invalidation statistics\n"
-			"==================================\n\n"
-			"flush\t\t%9d\n"
-			"purge user\t%9d\n"
-			"zap_dir\t\t%9d\n"
-			"zap_file\t%9d\n"
-			"zap_vnode\t%9d\n"
-			"purge_fid\t%9d\n"
-			"replace\t\t%9d\n",
-			ps->flush,
-			ps->purge_user,
-			ps->zap_dir,
-			ps->zap_file,
-			ps->zap_vnode,
-			ps->purge_fid,
-			ps->replace );
-  
-	begin = offset;
-	*start = buffer + begin;
-	len -= begin;
-
-	if ( len > length )
-		len = length;
-	if ( len < 0 )
-		len = 0;
-
-	return len;
-}
-