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Commit 270ac2c2 authored by Finn Thain's avatar Finn Thain Committed by Christoph Hellwig
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ncr5380: Remove NCR5380_STATS 



The NCR5380_STATS option is only enabled by g_NCR5380 yet it adds
clutter to all three core drivers. The atari_NCR5380.c and sun3_NCR5380.c
core drivers have a slightly different implementation of the
NCR5380_STATS option.

Out of all ten NCR5380 drivers, only one of them (g_NCR5380) actually
has the code to report on the collected stats. Aside from being unreadable,
that code seems to be broken because there's no initialization of timebase.
sun3_NCR5380.c and atari_NCR5380.c have the timebase initialization but
lack the code to report the stats.

Remove all of this code to improve readability and reduce divergence
between the three core drivers.

This patch and the next one completely eliminate the PRINTP and ANDP
pre-processor abuse.

Signed-off-by: default avatarFinn Thain <fthain@telegraphics.com.au>
Reviewed-by: default avatarHannes Reinecke <hare@suse.de>
Tested-by: default avatarMichael Schmitz <schmitzmic@gmail.com>
Signed-off-by: default avatarChristoph Hellwig <hch@lst.de>
parent 22f5f10d

drivers/scsi/NCR5380.c

+0 −64
Original line number Diff line number Diff line
@@ -833,18 +833,6 @@ static int NCR5380_init(struct Scsi_Host *instance, int flags) 
	

	INIT_DELAYED_WORK(&hostdata->coroutine, NCR5380_main);

	

#ifdef NCR5380_STATS

	for (i = 0; i < 8; ++i) {

		hostdata->time_read[i] = 0;

		hostdata->time_write[i] = 0;

		hostdata->bytes_read[i] = 0;

		hostdata->bytes_write[i] = 0;

	}

	hostdata->timebase = 0;

	hostdata->pendingw = 0;

	hostdata->pendingr = 0;

#endif



	/* The CHECK code seems to break the 53C400. Will check it later maybe */

	if (flags & FLAG_NCR53C400)

		hostdata->flags = FLAG_HAS_LAST_BYTE_SENT | flags;
@@ -943,25 +931,6 @@ static int NCR5380_queue_command_lck(Scsi_Cmnd * cmd, void (*done) (Scsi_Cmnd *) 
	}

#endif				/* (NDEBUG & NDEBUG_NO_WRITE) */



#ifdef NCR5380_STATS

	switch (cmd->cmnd[0]) {

		case WRITE:

		case WRITE_6:

		case WRITE_10:

			hostdata->time_write[cmd->device->id] -= (jiffies - hostdata->timebase);

			hostdata->bytes_write[cmd->device->id] += scsi_bufflen(cmd);

			hostdata->pendingw++;

			break;

		case READ:

		case READ_6:

		case READ_10:

			hostdata->time_read[cmd->device->id] -= (jiffies - hostdata->timebase);

			hostdata->bytes_read[cmd->device->id] += scsi_bufflen(cmd);

			hostdata->pendingr++;

			break;

	}

#endif



	/* 

	 * We use the host_scribble field as a pointer to the next command  

	 * in a queue
@@ -1207,35 +1176,6 @@ static irqreturn_t NCR5380_intr(int dummy, void *dev_id) 


#endif 



/**

 *	collect_stats		-	collect stats on a scsi command

 *	@hostdata: adapter 

 *	@cmd: command being issued

 *

 *	Update the statistical data by parsing the command in question

 */

 

static void collect_stats(struct NCR5380_hostdata *hostdata, Scsi_Cmnd * cmd) 

{

#ifdef NCR5380_STATS

	switch (cmd->cmnd[0]) {

	case WRITE:

	case WRITE_6:

	case WRITE_10:

		hostdata->time_write[scmd_id(cmd)] += (jiffies - hostdata->timebase);

		hostdata->pendingw--;

		break;

	case READ:

	case READ_6:

	case READ_10:

		hostdata->time_read[scmd_id(cmd)] += (jiffies - hostdata->timebase);

		hostdata->pendingr--;

		break;

	}

#endif

}





/* 

 * Function : int NCR5380_select (struct Scsi_Host *instance, Scsi_Cmnd *cmd)

 *
@@ -1464,7 +1404,6 @@ static int NCR5380_select(struct Scsi_Host *instance, Scsi_Cmnd *cmd) 
			return -1;

		}

		cmd->result = DID_BAD_TARGET << 16;

		collect_stats(hostdata, cmd);

		cmd->scsi_done(cmd);

		NCR5380_write(SELECT_ENABLE_REG, hostdata->id_mask);

		dprintk(NDEBUG_SELECTION, "scsi%d : target did not respond within 250ms\n", instance->host_no);
@@ -2216,7 +2155,6 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance) { 
					cmd->next_link->tag = cmd->tag;

					cmd->result = cmd->SCp.Status | (cmd->SCp.Message << 8);

					dprintk(NDEBUG_LINKED, "scsi%d : target %d lun %llu linked request done, calling scsi_done().\n", instance->host_no, cmd->device->id, cmd->device->lun);

					collect_stats(hostdata, cmd);

					cmd->scsi_done(cmd);

					cmd = hostdata->connected;

					break;
@@ -2268,7 +2206,6 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance) { 
						hostdata->issue_queue = (Scsi_Cmnd *) cmd;

						dprintk(NDEBUG_QUEUES, "scsi%d : REQUEST SENSE added to head of issue queue\n", instance->host_no);

					} else {

						collect_stats(hostdata, cmd);

						cmd->scsi_done(cmd);

					}
@@ -2415,7 +2352,6 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance) { 
					hostdata->busy[cmd->device->id] &= ~(1 << (cmd->device->lun & 0xFF));

					hostdata->connected = NULL;

					cmd->result = DID_ERROR << 16;

					collect_stats(hostdata, cmd);

					cmd->scsi_done(cmd);

					NCR5380_write(SELECT_ENABLE_REG, hostdata->id_mask);

					return;

drivers/scsi/NCR5380.h

+0 −9
Original line number Diff line number Diff line
@@ -272,15 +272,6 @@ struct NCR5380_hostdata { 
	int select_time;			/* timer in select for target response */

	volatile Scsi_Cmnd *selecting;

	struct delayed_work coroutine;		/* our co-routine */

#ifdef NCR5380_STATS

	unsigned timebase;			/* Base for time calcs */

	long time_read[8];			/* time to do reads */

	long time_write[8];			/* time to do writes */

	unsigned long bytes_read[8];		/* bytes read */

	unsigned long bytes_write[8];		/* bytes written */

	unsigned pendingr;

	unsigned pendingw;

#endif

	struct scsi_eh_save ses;

};

drivers/scsi/atari_NCR5380.c

+0 −65
Original line number Diff line number Diff line
@@ -888,34 +888,6 @@ static int NCR5380_queue_command_lck(Scsi_Cmnd *cmd, void (*done)(Scsi_Cmnd *)) 
	}

#endif /* (NDEBUG & NDEBUG_NO_WRITE) */



#ifdef NCR5380_STATS

# if 0

	if (!hostdata->connected && !hostdata->issue_queue &&

	    !hostdata->disconnected_queue) {

		hostdata->timebase = jiffies;

	}

# endif

# ifdef NCR5380_STAT_LIMIT

	if (scsi_bufflen(cmd) > NCR5380_STAT_LIMIT)

# endif

		switch (cmd->cmnd[0]) {

		case WRITE:

		case WRITE_6:

		case WRITE_10:

			hostdata->time_write[cmd->device->id] -= (jiffies - hostdata->timebase);

			hostdata->bytes_write[cmd->device->id] += scsi_bufflen(cmd);

			hostdata->pendingw++;

			break;

		case READ:

		case READ_6:

		case READ_10:

			hostdata->time_read[cmd->device->id] -= (jiffies - hostdata->timebase);

			hostdata->bytes_read[cmd->device->id] += scsi_bufflen(cmd);

			hostdata->pendingr++;

			break;

		}

#endif



	/*

	 * We use the host_scribble field as a pointer to the next command

	 * in a queue
@@ -1309,31 +1281,6 @@ static irqreturn_t NCR5380_intr(int irq, void *dev_id) 
	return IRQ_RETVAL(handled);

}



#ifdef NCR5380_STATS

static void collect_stats(struct NCR5380_hostdata* hostdata, Scsi_Cmnd *cmd)

{

# ifdef NCR5380_STAT_LIMIT

	if (scsi_bufflen(cmd) > NCR5380_STAT_LIMIT)

# endif

		switch (cmd->cmnd[0]) {

		case WRITE:

		case WRITE_6:

		case WRITE_10:

			hostdata->time_write[cmd->device->id] += (jiffies - hostdata->timebase);

			/*hostdata->bytes_write[cmd->device->id] += scsi_bufflen(cmd);*/

			hostdata->pendingw--;

			break;

		case READ:

		case READ_6:

		case READ_10:

			hostdata->time_read[cmd->device->id] += (jiffies - hostdata->timebase);

			/*hostdata->bytes_read[cmd->device->id] += scsi_bufflen(cmd);*/

			hostdata->pendingr--;

			break;

		}

}

#endif



/*

 * Function : int NCR5380_select (struct Scsi_Host *instance, Scsi_Cmnd *cmd)

 *
@@ -1598,9 +1545,6 @@ static int NCR5380_select(struct Scsi_Host *instance, Scsi_Cmnd *cmd) 
			return -1;

		}

		cmd->result = DID_BAD_TARGET << 16;

#ifdef NCR5380_STATS

		collect_stats(hostdata, cmd);

#endif

#ifdef SUPPORT_TAGS

		cmd_free_tag(cmd);

#endif
@@ -2127,9 +2071,6 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance) 
					dprintk(NDEBUG_LINKED, "scsi%d: target %d lun %llu linked request "

						   "done, calling scsi_done().\n",

						   HOSTNO, cmd->device->id, cmd->device->lun);

#ifdef NCR5380_STATS

					collect_stats(hostdata, cmd);

#endif

					cmd->scsi_done(cmd);

					cmd = hostdata->connected;

					break;
@@ -2209,9 +2150,6 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance) 
						dprintk(NDEBUG_QUEUES, "scsi%d: REQUEST SENSE added to head of "

							  "issue queue\n", H_NO(cmd));

					} else {

#ifdef NCR5380_STATS

						collect_stats(hostdata, cmd);

#endif

						cmd->scsi_done(cmd);

					}
@@ -2396,9 +2334,6 @@ static void NCR5380_information_transfer(struct Scsi_Host *instance) 
#endif

					hostdata->connected = NULL;

					cmd->result = DID_ERROR << 16;

#ifdef NCR5380_STATS

					collect_stats(hostdata, cmd);

#endif

					cmd->scsi_done(cmd);

					NCR5380_write(SELECT_ENABLE_REG, hostdata->id_mask);

					falcon_release_lock_if_possible(hostdata);

drivers/scsi/g_NCR5380.c

+0 −45
Original line number Diff line number Diff line
@@ -69,8 +69,6 @@ 
#define NCR53C400_PSEUDO_DMA 1

#define PSEUDO_DMA

#define NCR53C400

#define NCR5380_STATS

#undef NCR5380_STAT_LIMIT

#endif



#include <asm/io.h>
@@ -779,9 +777,6 @@ static int generic_NCR5380_show_info(struct seq_file *m, struct Scsi_Host *scsi_ 
	int i;

	Scsi_Cmnd *ptr;

	struct NCR5380_hostdata *hostdata;

#ifdef NCR5380_STATS

	struct scsi_device *dev;

#endif



	NCR5380_setup(scsi_ptr);

	hostdata = (struct NCR5380_hostdata *) scsi_ptr->hostdata;
@@ -805,46 +800,6 @@ static int generic_NCR5380_show_info(struct seq_file *m, struct Scsi_Host *scsi_ 
	else

		PRINTP("on interrupt %d\n" ANDP scsi_ptr->irq);



#ifdef NCR5380_STATS

	if (hostdata->connected || hostdata->issue_queue || hostdata->disconnected_queue)

		PRINTP("There are commands pending, transfer rates may be crud\n");

	if (hostdata->pendingr)

		PRINTP("  %d pending reads" ANDP hostdata->pendingr);

	if (hostdata->pendingw)

		PRINTP("  %d pending writes" ANDP hostdata->pendingw);

	if (hostdata->pendingr || hostdata->pendingw)

		PRINTP("\n");

	shost_for_each_device(dev, scsi_ptr) {

		unsigned long br = hostdata->bytes_read[dev->id];

		unsigned long bw = hostdata->bytes_write[dev->id];

		long tr = hostdata->time_read[dev->id] / HZ;

		long tw = hostdata->time_write[dev->id] / HZ;



		PRINTP("  T:%d %s " ANDP dev->id ANDP scsi_device_type(dev->type));

		for (i = 0; i < 8; i++)

			if (dev->vendor[i] >= 0x20)

				seq_putc(m, dev->vendor[i]);

		seq_putc(m, ' ');

		for (i = 0; i < 16; i++)

			if (dev->model[i] >= 0x20)

				seq_putc(m, dev->model[i]);

		seq_putc(m, ' ');

		for (i = 0; i < 4; i++)

			if (dev->rev[i] >= 0x20)

				seq_putc(m, dev->rev[i]);

		seq_putc(m, ' ');



		PRINTP("\n%10ld kb read    in %5ld secs" ANDP br / 1024 ANDP tr);

		if (tr)

			PRINTP(" @ %5ld bps" ANDP br / tr);



		PRINTP("\n%10ld kb written in %5ld secs" ANDP bw / 1024 ANDP tw);

		if (tw)

			PRINTP(" @ %5ld bps" ANDP bw / tw);

		PRINTP("\n");

	}

#endif



	status = NCR5380_read(STATUS_REG);

	if (!(status & SR_REQ))

		PRINTP("REQ not asserted, phase unknown.\n");

drivers/scsi/sun3_NCR5380.c

+0 −69
Original line number Diff line number Diff line
@@ -836,36 +836,6 @@ static int NCR5380_queue_command_lck(struct scsi_cmnd *cmd, 
    }

#endif /* (NDEBUG & NDEBUG_NO_WRITE) */





#ifdef NCR5380_STATS

# if 0

    if (!hostdata->connected && !hostdata->issue_queue &&

	!hostdata->disconnected_queue) {

	hostdata->timebase = jiffies;

    }

# endif

# ifdef NCR5380_STAT_LIMIT

    if (scsi_bufflen(cmd) > NCR5380_STAT_LIMIT)

# endif

	switch (cmd->cmnd[0])

	{

	    case WRITE:

	    case WRITE_6:

	    case WRITE_10:

		hostdata->time_write[cmd->device->id] -= (jiffies - hostdata->timebase);

		hostdata->bytes_write[cmd->device->id] += scsi_bufflen(cmd);

		hostdata->pendingw++;

		break;

	    case READ:

	    case READ_6:

	    case READ_10:

		hostdata->time_read[cmd->device->id] -= (jiffies - hostdata->timebase);

		hostdata->bytes_read[cmd->device->id] += scsi_bufflen(cmd);

		hostdata->pendingr++;

		break;

	}

#endif



    /* 

     * We use the host_scribble field as a pointer to the next command  

     * in a queue
@@ -1246,33 +1216,6 @@ static irqreturn_t NCR5380_intr (int irq, void *dev_id) 
    return IRQ_RETVAL(handled);

}



#ifdef NCR5380_STATS

static void collect_stats(struct NCR5380_hostdata *hostdata,

			  struct scsi_cmnd *cmd)

{

# ifdef NCR5380_STAT_LIMIT

    if (scsi_bufflen(cmd) > NCR5380_STAT_LIMIT)

# endif

	switch (cmd->cmnd[0])

	{

	    case WRITE:

	    case WRITE_6:

	    case WRITE_10:

		hostdata->time_write[cmd->device->id] += (jiffies - hostdata->timebase);

		/*hostdata->bytes_write[cmd->device->id] += scsi_bufflen(cmd);*/

		hostdata->pendingw--;

		break;

	    case READ:

	    case READ_6:

	    case READ_10:

		hostdata->time_read[cmd->device->id] += (jiffies - hostdata->timebase);

		/*hostdata->bytes_read[cmd->device->id] += scsi_bufflen(cmd);*/

		hostdata->pendingr--;

		break;

	}

}

#endif



/* 

 * Function : int NCR5380_select(struct Scsi_Host *instance,

 *				 struct scsi_cmnd *cmd)
@@ -1538,9 +1481,6 @@ static int NCR5380_select(struct Scsi_Host *instance, struct scsi_cmnd *cmd) 
	    return -1;

	}

	cmd->result = DID_BAD_TARGET << 16;

#ifdef NCR5380_STATS

	collect_stats(hostdata, cmd);

#endif

#ifdef SUPPORT_TAGS

	cmd_free_tag( cmd );

#endif
@@ -2090,9 +2030,6 @@ static void NCR5380_information_transfer (struct Scsi_Host *instance) 
		    dprintk(NDEBUG_LINKED, "scsi%d: target %d lun %llu linked request "

			       "done, calling scsi_done().\n",

			       HOSTNO, cmd->device->id, cmd->device->lun);

#ifdef NCR5380_STATS

		    collect_stats(hostdata, cmd);

#endif

		    cmd->scsi_done(cmd);

		    cmd = hostdata->connected;

		    break;
@@ -2174,9 +2111,6 @@ static void NCR5380_information_transfer (struct Scsi_Host *instance) 
			dprintk(NDEBUG_QUEUES, "scsi%d: REQUEST SENSE added to head of "

				  "issue queue\n", H_NO(cmd));

		   } else {

#ifdef NCR5380_STATS

		       collect_stats(hostdata, cmd);

#endif

		       cmd->scsi_done(cmd);

		    }
@@ -2359,9 +2293,6 @@ static void NCR5380_information_transfer (struct Scsi_Host *instance) 
#endif

		    hostdata->connected = NULL;

		    cmd->result = DID_ERROR << 16;

#ifdef NCR5380_STATS

		    collect_stats(hostdata, cmd);

#endif

		    cmd->scsi_done(cmd);

		    NCR5380_write(SELECT_ENABLE_REG, hostdata->id_mask);

		    return;