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scsi: use external buffer for command logging

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Use an external buffer for __scsi_print_command() and move command
logging over to use the per-cpu logging buffer.  With that we can
guarantee the command always will always be formatted in one line.
So we can even print out a variable length command correctly across
several lines. Finally rename __scsi_print_command() to
__scsi_format_comment() to better reflect the functionality.

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 07:43:44 +01:00
committed by Christoph Hellwig
parent aa66ab35f2
commit 9e5ed2a5b3
6 changed files with 192 additions and 92 deletions
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6
include/scsi/scsi_dbg.h
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@@ -5,8 +5,12 @@ struct scsi_cmnd;
struct scsi_device;
struct scsi_sense_hdr;
#define SCSI_LOG_BUFSIZE 128
extern bool scsi_opcode_sa_name(int, int, const char **, const char **);
extern void scsi_print_command(struct scsi_cmnd *);
extern void __scsi_print_command(const unsigned char *, size_t);
extern size_t __scsi_format_command(char *, size_t,
const unsigned char *, size_t);
extern void scsi_show_extd_sense(const struct scsi_device *, const char *,
unsigned char, unsigned char);
extern void scsi_show_sense_hdr(const struct scsi_device *, const char *,