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scsi: use per-cpu buffer for formatting scsi_print_result()

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Convert scsi_print_result() to use the per-cpu buffer for decoding the
command result and disposition.

Tested-by: Robert Elliott <elliott@hp.com>
Reviewed-by: Robert Elliott <elliott@hp.com>
Signed-off-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Hannes Reinecke
2015-01-08 07:43:47 +01:00
committed by Christoph Hellwig
parent 2104551969
commit 026f8da8da
4 changed files with 61 additions and 24 deletions
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59
drivers/scsi/scsi_logging.c
View File

@@ -428,3 +428,62 @@ void scsi_print_sense(const struct scsi_cmnd *cmd)
cmd->sense_buffer, SCSI_SENSE_BUFFERSIZE);
}
EXPORT_SYMBOL(scsi_print_sense);
void scsi_print_result(const struct scsi_cmnd *cmd, const char *msg,
int disposition)
{
char *logbuf;
size_t off, logbuf_len;
const char *mlret_string = scsi_mlreturn_string(disposition);
const char *hb_string = scsi_hostbyte_string(cmd->result);
const char *db_string = scsi_driverbyte_string(cmd->result);
logbuf = scsi_log_reserve_buffer(&logbuf_len);
if (!logbuf)
return;
off = sdev_format_header(logbuf, logbuf_len,
scmd_name(cmd), cmd->request->tag);
if (off >= logbuf_len)
goto out_printk;
if (msg) {
off += scnprintf(logbuf + off, logbuf_len - off,
"%s: ", msg);
if (WARN_ON(off >= logbuf_len))
goto out_printk;
}
if (mlret_string)
off += scnprintf(logbuf + off, logbuf_len - off,
"%s ", mlret_string);
else
off += scnprintf(logbuf + off, logbuf_len - off,
"UNKNOWN(0x%02x) ", disposition);
if (WARN_ON(off >= logbuf_len))
goto out_printk;
off += scnprintf(logbuf + off, logbuf_len - off, "Result: ");
if (WARN_ON(off >= logbuf_len))
goto out_printk;
if (hb_string)
off += scnprintf(logbuf + off, logbuf_len - off,
"hostbyte=%s ", hb_string);
else
off += scnprintf(logbuf + off, logbuf_len - off,
"hostbyte=0x%02x ", host_byte(cmd->result));
if (WARN_ON(off >= logbuf_len))
goto out_printk;
if (db_string)
off += scnprintf(logbuf + off, logbuf_len - off,
"driverbyte=%s", db_string);
else
off += scnprintf(logbuf + off, logbuf_len - off,
"driverbyte=0x%02x", driver_byte(cmd->result));
out_printk:
dev_printk(KERN_INFO, &cmd->device->sdev_gendev, logbuf);
scsi_log_release_buffer(logbuf);
}
EXPORT_SYMBOL(scsi_print_result);