diff options
| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2014-06-26 15:42:41 +0200 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2014-07-01 13:13:39 +0200 |
| commit | 7b039cb4c5a90d8ea576b17e096f7334457aeb57 (patch) | |
| tree | f901548a3740e26a36f142e049e28918199ca67f /drivers/scsi/scsi_trace.c | |
| parent | tracing: Remove unnecessary null test before debugfs_remove() (diff) | |
| download | linux-7b039cb4c5a90d8ea576b17e096f7334457aeb57.tar.xz linux-7b039cb4c5a90d8ea576b17e096f7334457aeb57.zip | |
tracing: Add trace_seq_buffer_ptr() helper function
There's several locations in the kernel that open code the calculation
of the next location in the trace_seq buffer. This is usually done with
p->buffer + p->len
Instead of having this open coded, supply a helper function in the
header to do it for them. This function is called trace_seq_buffer_ptr().
Link: http://lkml.kernel.org/p/20140626220129.452783019@goodmis.org
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'drivers/scsi/scsi_trace.c')
| -rw-r--r-- | drivers/scsi/scsi_trace.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/scsi/scsi_trace.c b/drivers/scsi/scsi_trace.c index 2bea4f0b684a..503594e5f76d 100644 --- a/drivers/scsi/scsi_trace.c +++ b/drivers/scsi/scsi_trace.c @@ -28,7 +28,7 @@ scsi_trace_misc(struct trace_seq *, unsigned char *, int); static const char * scsi_trace_rw6(struct trace_seq *p, unsigned char *cdb, int len) { - const char *ret = p->buffer + p->len; + const char *ret = trace_seq_buffer_ptr(p); sector_t lba = 0, txlen = 0; lba |= ((cdb[1] & 0x1F) << 16); @@ -46,7 +46,7 @@ scsi_trace_rw6(struct trace_seq *p, unsigned char *cdb, int len) static const char * scsi_trace_rw10(struct trace_seq *p, unsigned char *cdb, int len) { - const char *ret = p->buffer + p->len; + const char *ret = trace_seq_buffer_ptr(p); sector_t lba = 0, txlen = 0; lba |= (cdb[2] << 24); @@ -71,7 +71,7 @@ scsi_trace_rw10(struct trace_seq *p, unsigned char *cdb, int len) static const char * scsi_trace_rw12(struct trace_seq *p, unsigned char *cdb, int len) { - const char *ret = p->buffer + p->len; + const char *ret = trace_seq_buffer_ptr(p); sector_t lba = 0, txlen = 0; lba |= (cdb[2] << 24); @@ -94,7 +94,7 @@ scsi_trace_rw12(struct trace_seq *p, unsigned char *cdb, int len) static const char * scsi_trace_rw16(struct trace_seq *p, unsigned char *cdb, int len) { - const char *ret = p->buffer + p->len; + const char *ret = trace_seq_buffer_ptr(p); sector_t lba = 0, txlen = 0; lba |= ((u64)cdb[2] << 56); @@ -125,7 +125,7 @@ scsi_trace_rw16(struct trace_seq *p, unsigned char *cdb, int len) static const char * scsi_trace_rw32(struct trace_seq *p, unsigned char *cdb, int len) { - const char *ret = p->buffer + p->len, *cmd; + const char *ret = trace_seq_buffer_ptr(p), *cmd; sector_t lba = 0, txlen = 0; u32 ei_lbrt = 0; @@ -180,7 +180,7 @@ out: static const char * scsi_trace_unmap(struct trace_seq *p, unsigned char *cdb, int len) { - const char *ret = p->buffer + p->len; + const char *ret = trace_seq_buffer_ptr(p); unsigned int regions = cdb[7] << 8 | cdb[8]; trace_seq_printf(p, "regions=%u", (regions - 8) / 16); @@ -192,7 +192,7 @@ scsi_trace_unmap(struct trace_seq *p, unsigned char *cdb, int len) static const char * scsi_trace_service_action_in(struct trace_seq *p, unsigned char *cdb, int len) { - const char *ret = p->buffer + p->len, *cmd; + const char *ret = trace_seq_buffer_ptr(p), *cmd; sector_t lba = 0; u32 alloc_len = 0; @@ -247,7 +247,7 @@ scsi_trace_varlen(struct trace_seq *p, unsigned char *cdb, int len) static const char * scsi_trace_misc(struct trace_seq *p, unsigned char *cdb, int len) { - const char *ret = p->buffer + p->len; + const char *ret = trace_seq_buffer_ptr(p); trace_seq_printf(p, "-"); trace_seq_putc(p, 0); |