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Message-ID: <20250925150427.67394-17-johannes.thumshirn@wdc.com>
Date: Thu, 25 Sep 2025 17:04:21 +0200
From: Johannes Thumshirn <johannes.thumshirn@....com>
To: Jens Axboe <axboe@...nel.dk>
Cc: Steven Rostedt <rostedt@...dmis.org>,
Masami Hiramatsu <mhiramat@...nel.org>,
Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
linux-block@...r.kernel.org,
linux-kernel@...r.kernel.org,
linux-trace-kernel@...r.kernel.org,
linux-btrace@...r.kernel.org,
John Garry <john.g.garry@...cle.com>,
Hannes Reinecke <hare@...e.de>,
Damien Le Moal <dlemoal@...nel.org>,
Christoph Hellwig <hch@....de>,
Naohiro Aota <naohiro.aota@....com>,
Shinichiro Kawasaki <shinichiro.kawasaki@....com>,
Chaitanya Kulkarni <chaitanyak@...dia.com>,
"Martin K . Petersen" <martin.petersen@...cle.com>,
Johannes Thumshirn <johannes.thumshirn@....com>
Subject: [PATCH blktrace v2 16/22] blkparse: use blk_io_trace2 internally
Use 'struct blk_io_trace2' as internal representation for a captured
blktrace.
This implies the conversion of 'struct blk_io_trace' into 'struct
blk_io_trace2' when reading the trace from the binary file.
Signed-off-by: Johannes Thumshirn <johannes.thumshirn@....com>
---
blkparse.c | 131 +++++++++++++++++++++++++++----------------------
blkparse_fmt.c | 16 +++---
blktrace.h | 23 ++++++++-
3 files changed, 103 insertions(+), 67 deletions(-)
diff --git a/blkparse.c b/blkparse.c
index 6396611..7100009 100644
--- a/blkparse.c
+++ b/blkparse.c
@@ -243,7 +243,7 @@ static struct option l_opts[] = {
* for sorting the displayed output
*/
struct trace {
- struct blk_io_trace *bit;
+ struct blk_io_trace2 *bit;
struct rb_node rb_node;
struct trace *next;
unsigned long read_sequence;
@@ -257,7 +257,7 @@ static struct trace *trace_list;
/*
* allocation cache
*/
-static struct blk_io_trace *bit_alloc_list;
+static struct blk_io_trace2 *bit_alloc_list;
static struct trace *t_alloc_list;
/*
@@ -332,7 +332,7 @@ static int have_drv_data = 0;
#define CPU_IDX(cpu) ((cpu) / CPUS_PER_LONG)
#define CPU_BIT(cpu) ((cpu) & (CPUS_PER_LONG - 1))
-static void io_warn_unless(struct blk_io_trace *t, int condition,
+static void io_warn_unless(struct blk_io_trace2 *t, int condition,
const char *fmt, ...)
{
va_list ap;
@@ -613,7 +613,7 @@ static struct process_pid_map *add_ppm_hash(pid_t pid, const char *name)
return ppm;
}
-static void handle_notify(struct blk_io_trace *bit)
+static void handle_notify(struct blk_io_trace2 *bit)
{
void *payload = (caddr_t) bit + sizeof(*bit);
__u32 two32[2];
@@ -802,25 +802,25 @@ static inline struct trace *t_alloc(void)
return malloc(sizeof(*t));
}
-static inline void bit_free(struct blk_io_trace *bit)
+static inline void bit_free(struct blk_io_trace2 *bit)
{
if (bit_alloc_cache < 1024 && !bit->pdu_len) {
/*
* abuse a 64-bit field for a next pointer for the free item
*/
bit->time = (__u64) (unsigned long) bit_alloc_list;
- bit_alloc_list = (struct blk_io_trace *) bit;
+ bit_alloc_list = (struct blk_io_trace2 *) bit;
bit_alloc_cache++;
} else
free(bit);
}
-static inline struct blk_io_trace *bit_alloc(void)
+static inline struct blk_io_trace2 *bit_alloc(void)
{
- struct blk_io_trace *bit = bit_alloc_list;
+ struct blk_io_trace2 *bit = bit_alloc_list;
if (bit) {
- bit_alloc_list = (struct blk_io_trace *) (unsigned long) \
+ bit_alloc_list = (struct blk_io_trace2 *) (unsigned long) \
bit->time;
bit_alloc_cache--;
return bit;
@@ -1041,7 +1041,7 @@ static struct io_track *find_track(struct per_dev_info *pdi, pid_t pid,
}
static void log_track_frontmerge(struct per_dev_info *pdi,
- struct blk_io_trace *t)
+ struct blk_io_trace2 *t)
{
struct io_track *iot;
@@ -1062,7 +1062,7 @@ static void log_track_frontmerge(struct per_dev_info *pdi,
track_rb_insert(pdi, iot);
}
-static void log_track_getrq(struct per_dev_info *pdi, struct blk_io_trace *t)
+static void log_track_getrq(struct per_dev_info *pdi, struct blk_io_trace2 *t)
{
struct io_track *iot;
struct io_track_req *req;
@@ -1081,7 +1081,7 @@ static void log_track_getrq(struct per_dev_info *pdi, struct blk_io_trace *t)
* for md/dm setups, the interesting cycle is Q -> C. So track queueing
* time here, as dispatch time
*/
-static void log_track_queue(struct per_dev_info *pdi, struct blk_io_trace *t)
+static void log_track_queue(struct per_dev_info *pdi, struct blk_io_trace2 *t)
{
struct io_track *iot;
struct io_track_req *req;
@@ -1096,7 +1096,7 @@ static void log_track_queue(struct per_dev_info *pdi, struct blk_io_trace *t)
req->dispatch_time = t->time;
}
-static void log_track_split(struct per_dev_info *pdi, struct blk_io_trace *t)
+static void log_track_split(struct per_dev_info *pdi, struct blk_io_trace2 *t)
{
struct io_track *iot, *split;
@@ -1118,7 +1118,7 @@ static void log_track_split(struct per_dev_info *pdi, struct blk_io_trace *t)
* return time between rq allocation and insertion
*/
static unsigned long long log_track_insert(struct per_dev_info *pdi,
- struct blk_io_trace *t)
+ struct blk_io_trace2 *t)
{
unsigned long long elapsed;
struct io_track *iot;
@@ -1153,7 +1153,7 @@ static unsigned long long log_track_insert(struct per_dev_info *pdi,
* return time between queue and issue
*/
static unsigned long long log_track_issue(struct per_dev_info *pdi,
- struct blk_io_trace *t)
+ struct blk_io_trace2 *t)
{
unsigned long long elapsed = -1ULL;
struct io_track *iot;
@@ -1191,7 +1191,7 @@ static unsigned long long log_track_issue(struct per_dev_info *pdi,
return elapsed;
}
-static void fixup_complete(struct per_dev_info *pdi, struct blk_io_trace *t)
+static void fixup_complete(struct per_dev_info *pdi, struct blk_io_trace2 *t)
{
struct io_track *iot;
__u64 start_sector;
@@ -1214,7 +1214,7 @@ static void fixup_complete(struct per_dev_info *pdi, struct blk_io_trace *t)
* return time between dispatch and complete
*/
static unsigned long long log_track_complete(struct per_dev_info *pdi,
- struct blk_io_trace *t)
+ struct blk_io_trace2 *t)
{
unsigned long long elapsed = -1ULL;
struct io_track *iot, *next;
@@ -1288,7 +1288,7 @@ static char *get_dev_name(struct per_dev_info *pdi, char *buffer, int size)
return buffer;
}
-static void check_time(struct per_dev_info *pdi, struct blk_io_trace *bit)
+static void check_time(struct per_dev_info *pdi, struct blk_io_trace2 *bit)
{
unsigned long long this = bit->time;
unsigned long long last = pdi->last_reported_time;
@@ -1297,7 +1297,7 @@ static void check_time(struct per_dev_info *pdi, struct blk_io_trace *bit)
pdi->last_reported_time = this;
}
-static inline void __account_m(struct io_stats *ios, struct blk_io_trace *t,
+static inline void __account_m(struct io_stats *ios, struct blk_io_trace2 *t,
int rw)
{
if (rw) {
@@ -1311,7 +1311,7 @@ static inline void __account_m(struct io_stats *ios, struct blk_io_trace *t,
}
}
-static inline void account_m(struct blk_io_trace *t, struct per_cpu_info *pci,
+static inline void account_m(struct blk_io_trace2 *t, struct per_cpu_info *pci,
int rw)
{
__account_m(&pci->io_stats, t, rw);
@@ -1324,7 +1324,7 @@ static inline void account_m(struct blk_io_trace *t, struct per_cpu_info *pci,
}
static inline void __account_pc_queue(struct io_stats *ios,
- struct blk_io_trace *t, int rw)
+ struct blk_io_trace2 *t, int rw)
{
if (rw) {
ios->qwrites_pc++;
@@ -1337,7 +1337,7 @@ static inline void __account_pc_queue(struct io_stats *ios,
}
}
-static inline void account_pc_queue(struct blk_io_trace *t,
+static inline void account_pc_queue(struct blk_io_trace2 *t,
struct per_cpu_info *pci, int rw)
{
__account_pc_queue(&pci->io_stats, t, rw);
@@ -1363,7 +1363,7 @@ static inline void __account_pc_issue(struct io_stats *ios, int rw,
}
}
-static inline void account_pc_issue(struct blk_io_trace *t,
+static inline void account_pc_issue(struct blk_io_trace2 *t,
struct per_cpu_info *pci, int rw)
{
__account_pc_issue(&pci->io_stats, rw, t->bytes);
@@ -1376,7 +1376,7 @@ static inline void account_pc_issue(struct blk_io_trace *t,
}
static inline void __account_pc_requeue(struct io_stats *ios,
- struct blk_io_trace *t, int rw)
+ struct blk_io_trace2 *t, int rw)
{
if (rw) {
ios->wrqueue_pc++;
@@ -1389,7 +1389,7 @@ static inline void __account_pc_requeue(struct io_stats *ios,
}
}
-static inline void account_pc_requeue(struct blk_io_trace *t,
+static inline void account_pc_requeue(struct blk_io_trace2 *t,
struct per_cpu_info *pci, int rw)
{
__account_pc_requeue(&pci->io_stats, t, rw);
@@ -1409,7 +1409,7 @@ static inline void __account_pc_c(struct io_stats *ios, int rw)
ios->creads_pc++;
}
-static inline void account_pc_c(struct blk_io_trace *t,
+static inline void account_pc_c(struct blk_io_trace2 *t,
struct per_cpu_info *pci, int rw)
{
__account_pc_c(&pci->io_stats, rw);
@@ -1421,7 +1421,7 @@ static inline void account_pc_c(struct blk_io_trace *t,
}
}
-static inline void __account_queue(struct io_stats *ios, struct blk_io_trace *t,
+static inline void __account_queue(struct io_stats *ios, struct blk_io_trace2 *t,
int rw)
{
if (rw) {
@@ -1435,7 +1435,7 @@ static inline void __account_queue(struct io_stats *ios, struct blk_io_trace *t,
}
}
-static inline void account_queue(struct blk_io_trace *t,
+static inline void account_queue(struct blk_io_trace2 *t,
struct per_cpu_info *pci, int rw)
{
__account_queue(&pci->io_stats, t, rw);
@@ -1460,7 +1460,7 @@ static inline void __account_c(struct io_stats *ios, int rw, int bytes)
}
}
-static inline void account_c(struct blk_io_trace *t, struct per_cpu_info *pci,
+static inline void account_c(struct blk_io_trace2 *t, struct per_cpu_info *pci,
int rw, int bytes)
{
__account_c(&pci->io_stats, rw, bytes);
@@ -1486,7 +1486,7 @@ static inline void __account_issue(struct io_stats *ios, int rw,
}
}
-static inline void account_issue(struct blk_io_trace *t,
+static inline void account_issue(struct blk_io_trace2 *t,
struct per_cpu_info *pci, int rw)
{
__account_issue(&pci->io_stats, rw, t->bytes);
@@ -1506,7 +1506,7 @@ static inline void __account_unplug(struct io_stats *ios, int timer)
ios->io_unplugs++;
}
-static inline void account_unplug(struct blk_io_trace *t,
+static inline void account_unplug(struct blk_io_trace2 *t,
struct per_cpu_info *pci, int timer)
{
__account_unplug(&pci->io_stats, timer);
@@ -1519,7 +1519,7 @@ static inline void account_unplug(struct blk_io_trace *t,
}
static inline void __account_requeue(struct io_stats *ios,
- struct blk_io_trace *t, int rw)
+ struct blk_io_trace2 *t, int rw)
{
if (rw) {
ios->wrqueue++;
@@ -1532,7 +1532,7 @@ static inline void __account_requeue(struct io_stats *ios,
}
}
-static inline void account_requeue(struct blk_io_trace *t,
+static inline void account_requeue(struct blk_io_trace2 *t,
struct per_cpu_info *pci, int rw)
{
__account_requeue(&pci->io_stats, t, rw);
@@ -1545,31 +1545,31 @@ static inline void account_requeue(struct blk_io_trace *t,
}
static void log_complete(struct per_dev_info *pdi, struct per_cpu_info *pci,
- struct blk_io_trace *t, char *act)
+ struct blk_io_trace2 *t, char *act)
{
process_fmt(act, pci, t, log_track_complete(pdi, t), 0, NULL);
}
static void log_insert(struct per_dev_info *pdi, struct per_cpu_info *pci,
- struct blk_io_trace *t, char *act)
+ struct blk_io_trace2 *t, char *act)
{
process_fmt(act, pci, t, log_track_insert(pdi, t), 0, NULL);
}
-static void log_queue(struct per_cpu_info *pci, struct blk_io_trace *t,
+static void log_queue(struct per_cpu_info *pci, struct blk_io_trace2 *t,
char *act)
{
process_fmt(act, pci, t, -1, 0, NULL);
}
static void log_issue(struct per_dev_info *pdi, struct per_cpu_info *pci,
- struct blk_io_trace *t, char *act)
+ struct blk_io_trace2 *t, char *act)
{
process_fmt(act, pci, t, log_track_issue(pdi, t), 0, NULL);
}
static void log_merge(struct per_dev_info *pdi, struct per_cpu_info *pci,
- struct blk_io_trace *t, char *act)
+ struct blk_io_trace2 *t, char *act)
{
if (act[0] == 'F')
log_track_frontmerge(pdi, t);
@@ -1577,38 +1577,38 @@ static void log_merge(struct per_dev_info *pdi, struct per_cpu_info *pci,
process_fmt(act, pci, t, -1ULL, 0, NULL);
}
-static void log_action(struct per_cpu_info *pci, struct blk_io_trace *t,
+static void log_action(struct per_cpu_info *pci, struct blk_io_trace2 *t,
char *act)
{
process_fmt(act, pci, t, -1ULL, 0, NULL);
}
-static void log_generic(struct per_cpu_info *pci, struct blk_io_trace *t,
+static void log_generic(struct per_cpu_info *pci, struct blk_io_trace2 *t,
char *act)
{
process_fmt(act, pci, t, -1ULL, 0, NULL);
}
-static void log_unplug(struct per_cpu_info *pci, struct blk_io_trace *t,
+static void log_unplug(struct per_cpu_info *pci, struct blk_io_trace2 *t,
char *act)
{
process_fmt(act, pci, t, -1ULL, 0, NULL);
}
-static void log_split(struct per_cpu_info *pci, struct blk_io_trace *t,
+static void log_split(struct per_cpu_info *pci, struct blk_io_trace2 *t,
char *act)
{
process_fmt(act, pci, t, -1ULL, 0, NULL);
}
-static void log_pc(struct per_cpu_info *pci, struct blk_io_trace *t, char *act)
+static void log_pc(struct per_cpu_info *pci, struct blk_io_trace2 *t, char *act)
{
unsigned char *buf = (unsigned char *) t + sizeof(*t);
process_fmt(act, pci, t, -1ULL, t->pdu_len, buf);
}
-static void dump_trace_pc(struct blk_io_trace *t, struct per_dev_info *pdi,
+static void dump_trace_pc(struct blk_io_trace2 *t, struct per_dev_info *pdi,
struct per_cpu_info *pci)
{
int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0;
@@ -1657,7 +1657,7 @@ static void dump_trace_pc(struct blk_io_trace *t, struct per_dev_info *pdi,
}
}
-static void dump_trace_fs(struct blk_io_trace *t, struct per_dev_info *pdi,
+static void dump_trace_fs(struct blk_io_trace2 *t, struct per_dev_info *pdi,
struct per_cpu_info *pci)
{
int w = (t->action & BLK_TC_ACT(BLK_TC_WRITE)) != 0;
@@ -1737,12 +1737,12 @@ static void dump_trace_fs(struct blk_io_trace *t, struct per_dev_info *pdi,
/* dump to binary file only */
break;
default:
- fprintf(stderr, "Bad fs action %x\n", t->action);
+ fprintf(stderr, "Bad fs action %llx\n", t->action);
break;
}
}
-static void dump_trace(struct blk_io_trace *t, struct per_cpu_info *pci,
+static void dump_trace(struct blk_io_trace2 *t, struct per_cpu_info *pci,
struct per_dev_info *pdi)
{
if (text_output) {
@@ -2162,7 +2162,7 @@ static void find_genesis(void)
}
}
-static inline int check_stopwatch(struct blk_io_trace *bit)
+static inline int check_stopwatch(struct blk_io_trace2 *bit)
{
if (bit->time < stopwatch_end &&
bit->time >= stopwatch_start)
@@ -2185,7 +2185,7 @@ static int sort_entries(unsigned long long *youngest)
*youngest = 0;
while ((t = trace_list) != NULL) {
- struct blk_io_trace *bit = t->bit;
+ struct blk_io_trace2 *bit = t->bit;
trace_list = t->next;
@@ -2264,7 +2264,7 @@ static int check_cpu_map(struct per_dev_info *pdi)
static int check_sequence(struct per_dev_info *pdi, struct trace *t, int force)
{
- struct blk_io_trace *bit = t->bit;
+ struct blk_io_trace2 *bit = t->bit;
unsigned long expected_sequence;
struct per_cpu_info *pci;
struct trace *__t;
@@ -2315,7 +2315,7 @@ static void show_entries_rb(int force)
{
struct per_dev_info *pdi = NULL;
struct per_cpu_info *pci = NULL;
- struct blk_io_trace *bit;
+ struct blk_io_trace2 *bit;
struct rb_node *n;
struct trace *t;
@@ -2428,12 +2428,22 @@ static inline __u32 get_magic(__u32 magic)
return __bswap_32(magic);
}
-static int read_one_bit(int fd, struct blk_io_trace *bit, int block,
+static int read_one_bit(int fd, struct blk_io_trace2 **bit2, int block,
int *fdblock)
{
+ struct blk_io_trace2 *new = *bit2;
+ struct blk_io_trace *bit;
int ret;
int pdu_len;
- void *p = (void *) ((u8 *)bit + sizeof(__u32));
+ void *p;
+
+ bit = malloc(sizeof(*bit));
+ if (!bit)
+ return -1;
+
+ bit->magic = new->magic;
+
+ p = (void *) ((u8 *)bit + sizeof(__u32));
ret = read_data(fd, p, sizeof(*bit) - sizeof(__u32), block, fdblock);
if (ret)
@@ -2449,9 +2459,14 @@ static int read_one_bit(int fd, struct blk_io_trace *bit, int block,
return ret;
}
bit = ptr;
+
+ new = realloc(*bit2, sizeof(struct blk_io_trace2) + pdu_len);
}
bit_trace_to_cpu(bit);
+ bit_to_bit2(bit, new);
+ free(bit);
+ *bit2 = new;
return 0;
}
@@ -2491,11 +2506,11 @@ static int read_events(int fd, int always_block, int *fdblock)
}
version = magic & 0xff;
if (version == SUPPORTED_VERSION) {
- struct blk_io_trace *bit;
+ struct blk_io_trace2 *bit;
bit = bit_alloc();
bit->magic = magic;
- ret = read_one_bit(fd, bit, 1, fdblock);
+ ret = read_one_bit(fd, &bit, 1, fdblock);
if (ret)
break;
@@ -2620,7 +2635,7 @@ static int ms_prime(struct ms_stream *msp)
struct trace *t;
struct per_dev_info *pdi = msp->pdi;
struct per_cpu_info *pci = get_cpu_info(pdi, msp->cpu);
- struct blk_io_trace *bit = NULL;
+ struct blk_io_trace2 *bit = NULL;
int ret, ndone = 0;
for (i = 0; !is_done() && pci->fd >= 0 && i < rb_batch; i++) {
@@ -2645,7 +2660,7 @@ static int ms_prime(struct ms_stream *msp)
bit = bit_alloc();
bit->magic = magic;
- ret = read_one_bit(pci->fd, bit, 1, &pci->fdblock);
+ ret = read_one_bit(pci->fd, &bit, 1, &pci->fdblock);
if (ret)
goto err;
@@ -2767,7 +2782,7 @@ static int handle(struct ms_stream *msp)
struct trace *t;
struct per_dev_info *pdi;
struct per_cpu_info *pci;
- struct blk_io_trace *bit;
+ struct blk_io_trace2 *bit;
t = ms_peek(msp);
diff --git a/blkparse_fmt.c b/blkparse_fmt.c
index 02c5a3c..f93addb 100644
--- a/blkparse_fmt.c
+++ b/blkparse_fmt.c
@@ -51,7 +51,7 @@ int add_format_spec(char *option)
return 0;
}
-static inline void fill_rwbs(char *rwbs, struct blk_io_trace *t)
+static inline void fill_rwbs(char *rwbs, struct blk_io_trace2 *t)
{
bool w = !!(t->action & BLK_TC_ACT(BLK_TC_WRITE));
bool a = !!(t->action & BLK_TC_ACT(BLK_TC_AHEAD));
@@ -146,16 +146,16 @@ static char *dump_pdu(unsigned char *pdu_buf, int pdu_len)
return p;
}
-#define pdu_start(t) (((void *) (t) + sizeof(struct blk_io_trace)))
+#define pdu_start(t) (((void *) (t) + sizeof(struct blk_io_trace2)))
-static unsigned int get_pdu_int(struct blk_io_trace *t)
+static unsigned int get_pdu_int(struct blk_io_trace2 *t)
{
__u64 *val = pdu_start(t);
return be64_to_cpu(*val);
}
-static void get_pdu_remap(struct blk_io_trace *t, struct blk_io_trace_remap *r)
+static void get_pdu_remap(struct blk_io_trace2 *t, struct blk_io_trace_remap *r)
{
struct blk_io_trace_remap *__r = pdu_start(t);
__u64 sector_from = __r->sector_from;
@@ -166,7 +166,7 @@ static void get_pdu_remap(struct blk_io_trace *t, struct blk_io_trace_remap *r)
}
static void print_field(char *act, struct per_cpu_info *pci,
- struct blk_io_trace *t, unsigned long long elapsed,
+ struct blk_io_trace2 *t, unsigned long long elapsed,
int pdu_len, unsigned char *pdu_buf, char field,
int minus, int has_w, int width)
{
@@ -275,7 +275,7 @@ static void print_field(char *act, struct per_cpu_info *pci,
}
static char *parse_field(char *act, struct per_cpu_info *pci,
- struct blk_io_trace *t, unsigned long long elapsed,
+ struct blk_io_trace2 *t, unsigned long long elapsed,
int pdu_len, unsigned char *pdu_buf,
char *primary_format)
{
@@ -302,7 +302,7 @@ static char *parse_field(char *act, struct per_cpu_info *pci,
}
static void process_default(char *act, struct per_cpu_info *pci,
- struct blk_io_trace *t, unsigned long long elapsed,
+ struct blk_io_trace2 *t, unsigned long long elapsed,
int pdu_len, unsigned char *pdu_buf)
{
struct blk_io_trace_remap r = { .device_from = 0, };
@@ -436,7 +436,7 @@ static void process_default(char *act, struct per_cpu_info *pci,
}
-void process_fmt(char *act, struct per_cpu_info *pci, struct blk_io_trace *t,
+void process_fmt(char *act, struct per_cpu_info *pci, struct blk_io_trace2 *t,
unsigned long long elapsed, int pdu_len,
unsigned char *pdu_buf)
{
diff --git a/blktrace.h b/blktrace.h
index 08ac28b..196b3c9 100644
--- a/blktrace.h
+++ b/blktrace.h
@@ -6,6 +6,7 @@
#include <byteswap.h>
#include <endian.h>
#include <sys/types.h>
+#include <string.h>
#include "blktrace_api.h"
#include "rbtree.h"
@@ -108,6 +109,26 @@ static inline int verify_trace(__u32 magic)
return 0;
}
+static inline void bit_to_bit2(struct blk_io_trace *old,
+ struct blk_io_trace2 *new)
+{
+ new->magic = old->magic;
+ new->sequence = old->sequence;
+ new->time = old->time;
+ new->sector = old->sector;
+ new->bytes = old->bytes;
+ new->action = 0 | old->action;
+ new->pid = old->pid;
+ new->device = old->device;
+ new->cpu = old->cpu;
+ new->error = old->error;
+ new->pdu_len = old->pdu_len;
+
+ if (new->pdu_len)
+ memcpy(((u8 *) new + sizeof(*new)), ((u8 *)old + sizeof(*old)),
+ old->pdu_len);
+}
+
static inline void bit_trace_to_cpu(struct blk_io_trace *t)
{
if (data_is_native)
@@ -147,7 +168,7 @@ static inline int check_data_endianness(u32 magic)
extern void set_all_format_specs(char *);
extern int add_format_spec(char *);
-extern void process_fmt(char *, struct per_cpu_info *, struct blk_io_trace *,
+extern void process_fmt(char *, struct per_cpu_info *, struct blk_io_trace2 *,
unsigned long long, int, unsigned char *);
extern unsigned long long valid_act_opt(unsigned long long);
extern int find_mask_map(char *);
--
2.51.0
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