patch-2.4.2 linux/drivers/s390/block/dasd_profile.c

• Lines: 209
• Date: Wed Dec 31 16:00:00 1969
• Orig file: v2.4.1/linux/drivers/s390/block/dasd_profile.c
• Orig date: Fri May 12 11:41:44 2000

diff -u --recursive --new-file v2.4.1/linux/drivers/s390/block/dasd_profile.c linux/drivers/s390/block/dasd_profile.c
@@ -1,208 +0,0 @@
-#include <linux/mm.h>
-
-#include <linux/dasd.h>
-
-#include "dasd_types.h"
-
-#define PRINTK_HEADER "dasd_profile:"
-
-static long dasd_io_reqs=0; /* number of requests processed at all */
-static long dasd_io_secs[16]; /* histogram of request's sizes */
-static long dasd_io_times[16]; /* histogram of requests's times */
-static long dasd_io_timps[16]; /* histogram of requests's times per sector */
-static long dasd_io_time1[16]; /* histogram of time from build to start */
-static long dasd_io_time2[16]; /* histogram of time from start to irq */
-static long dasd_io_time2ps[16]; /* histogram of time from start to irq */
-static long dasd_io_time3[16]; /* histogram of time from irq to end */
-
-void
-dasd_profile_add ( cqr_t *cqr )
-{
-	int ind;
-	long strtime,irqtime,endtime,tottime;
-	long tottimeps,sectors;
-	long help;
-	if ( ! cqr -> req ) 
-	  return;
-	sectors = cqr -> req -> nr_sectors;
-	strtime = ((cqr->startclk - cqr->buildclk) >> 12);
-	irqtime = ((cqr->stopclk - cqr->startclk) >> 12);
-	endtime = ((cqr->endclk - cqr->stopclk) >> 12);
-	tottime = ((cqr->endclk - cqr->buildclk) >> 12);
-	tottimeps = tottime / sectors;
-
-	if (! dasd_io_reqs ++){
-	  for ( ind = 0; ind < 16; ind ++) {
-		dasd_io_secs[ind] = 0;
-		dasd_io_times[ind]=0;
-		dasd_io_timps[ind]=0;
-		dasd_io_time1[ind]=0;
-		dasd_io_time2[ind]=0;
-		dasd_io_time2ps[ind]=0;
-		dasd_io_time3[ind]=0;
-	  }
-	};
-	
-	for ( ind = 0, help = sectors >> 3; 
-	      ind < 15 && help; 
-	      help = help >> 1,ind ++);
-	dasd_io_secs[ind] ++;
-
-	for ( ind = 0, help = tottime >> 3; 
-	      ind < 15 && help; 
-	      help = help >> 1,ind ++);
-	dasd_io_times[ind] ++;
-
-	for ( ind = 0, help = tottimeps >> 3; 
-	      ind < 15 && help; 
-	      help = help >> 1,ind ++);
-	dasd_io_timps[ind] ++;
-
-	for ( ind = 0, help = strtime >> 3; 
-	      ind < 15 && help; 
-	      help = help >> 1,ind ++);
-	dasd_io_time1[ind] ++;
-
-	for ( ind = 0, help = irqtime >> 3; 
-	      ind < 15 && help; 
-	      help = help >> 1,ind ++);
-	dasd_io_time2[ind] ++;
-
-	for ( ind = 0, help = (irqtime/sectors) >> 3; 
-	      ind < 15 && help; 
-	      help = help >> 1,ind ++);
-	dasd_io_time2ps[ind] ++;
-
-	for ( ind = 0, help = endtime >> 3; 
-	      ind < 15 && help; 
-	      help = help >> 1,ind ++);
-	dasd_io_time3[ind] ++;
-}
-
-int 
-dasd_proc_read_statistics ( char * buf, char **start, 
-			    off_t off, int len, int d)
-{
-	int i;
-	int shift, help;
-	
-	for ( shift = 0, help = dasd_io_reqs; 
-	      help > 8192; 
-	      help = help >> 1,shift ++);
-	len = sprintf ( buf, "%ld dasd I/O requests\n", dasd_io_reqs); 
-	len += sprintf ( buf+len, "__<4 ___8 __16 __32 __64 _128 _256 _512 __1k __2k __4k __8k _16k _32k _64k >64k\n");
-	len += sprintf ( buf+len, "Histogram of sizes (512B secs)\n");
-	for ( i = 0; i < 16; i ++) {
-		len += sprintf ( buf+len, "%4ld ",dasd_io_secs[i] >> shift );
-	}
-	len += sprintf ( buf+len, "\n");
-	len += sprintf ( buf+len, "Histogram of I/O times\n");
-	for ( i = 0; i < 16; i ++) {
-		len += sprintf ( buf+len, "%4ld ",dasd_io_times[i] >> shift );
-	}
-	len += sprintf ( buf+len, "\n");
-	len += sprintf ( buf+len, "Histogram of I/O times per sector\n");
-	for ( i = 0; i < 16; i ++) {
-		len += sprintf ( buf+len, "%4ld ",dasd_io_timps[i] >> shift );
-	}
-	len += sprintf ( buf+len, "\n");
-	len += sprintf ( buf+len, "Histogram of I/O time till ssch\n");
-	for ( i = 0; i < 16; i ++) {
-		len += sprintf ( buf+len, "%4ld ",dasd_io_time1[i] >> shift );
-	}
-	len += sprintf ( buf+len, "\n");
-	len += sprintf ( buf+len, "Histogram of I/O time between ssch and irq\n");
-	for ( i = 0; i < 16; i ++) {
-		len += sprintf ( buf+len, "%4ld ",dasd_io_time2[i] >> shift );
-	}
-	len += sprintf ( buf+len, "\n");
-	len += sprintf ( buf+len, "Histogram of I/O time between ssch and irq per sector\n");
-	for ( i = 0; i < 16; i ++) {
-		len += sprintf ( buf+len, "%4ld ",dasd_io_time2ps[i] >> shift );
-	}
-	len += sprintf ( buf+len, "\n");
-	len += sprintf ( buf+len, "Histogram of I/O time between irq and end\n");
-	for ( i = 0; i < 16; i ++) {
-		len += sprintf ( buf+len, "%4ld ",dasd_io_time3[i] >> shift );
-	}
-	len += sprintf ( buf+len, "\n");
-	return len;
-}
-typedef
-struct {
-	union {
-		unsigned long long  clock;
-		struct {
-			unsigned int ts1;
-			unsigned int ts2 : 20;
-			unsigned int unused : 8;
-			unsigned int cpu : 4;
-		} __attribute__ ((packed)) s;
-	} __attribute__ ((packed)) u;
-	unsigned long caller_address;
-	unsigned long tag;
-} __attribute__ ((packed)) dasd_debug_entry;
-
-static dasd_debug_entry *dasd_debug_area = NULL;
-static dasd_debug_entry *dasd_debug_actual;
-static spinlock_t debug_lock = SPIN_LOCK_UNLOCKED;
-
-void 
-dasd_debug ( unsigned long tag )
-{
-	long flags;
-	dasd_debug_entry *d;
-	/* initialize in first call ... */
-	if ( ! dasd_debug_area ) {
-		dasd_debug_actual = dasd_debug_area = 
-			(dasd_debug_entry *) get_free_page (GFP_ATOMIC);
-		if ( ! dasd_debug_area ) {
-			PRINT_WARN("No debug area allocated\n");
-			return;
-		}
-		memset (dasd_debug_area,0,PAGE_SIZE);
-	}
-	/* renormalize to page */
-	spin_lock_irqsave(&debug_lock,flags);
-	dasd_debug_actual = (dasd_debug_entry *)
-		( (unsigned long) dasd_debug_area +
-		  ( ( (unsigned long)dasd_debug_actual -
-		      (unsigned long)dasd_debug_area ) % PAGE_SIZE ) );
-	d = dasd_debug_actual ++;
-	spin_unlock_irqrestore(&debug_lock,flags);
-	/* write CPUID to lowest 12 bits of clock... */
-	__asm__ __volatile__ ( "STCK  %0"
-			       :"=m" (d->u.clock));
-	d->tag = tag;
-	d -> caller_address = (unsigned long) __builtin_return_address(0);
-	d->u.s.cpu = smp_processor_id();
-}
-
-int 
-dasd_proc_read_debug ( char * buf, char **start, 
-		       off_t off, int len, int dd)
-{
-	dasd_debug_entry *d;
-	char tag[9] = { 0, };
-	long flags;
-	spin_lock_irqsave(&debug_lock,flags);
-	len = 0;
-       	for( d = dasd_debug_area; 
-	     len < 4068 ;
-	     d ++ ) {
-		if ( *(char*)(&d->tag) == 'D' ) {
-			memcpy(tag,&(d->tag),4);
-			tag[4]=0;
-		}
-		else {
-			sprintf(tag,"%08lx", d->tag);
-			tag[8]=0;
-		}
-		len += sprintf ( buf+len,
-				 "%x %08x%05x %08lx (%8s)\n",
-				 d->u.s.cpu, d->u.s.ts1, d->u.s.ts2,
-				 d->caller_address,tag);
-	}
-	spin_unlock_irqrestore(&debug_lock,flags);
-	return len;
-}