[blktrace.git] / blkparse_fmt.c

/*
 * This file contains format parsing code for blkparse, allowing you to
 * customize the individual action format and generel output format.
 */
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <ctype.h>
#include <time.h>

#include "blktrace.h"

#define VALID_SPECS	"ABCDFGIMPQRSTUWX"

#define HEADER		"%D %2c %8s %5T.%9t %5p %2a %3d "

static char *override_format[256];

static inline int valid_spec(int spec)
{
	return strchr(VALID_SPECS, spec) != NULL;
}

void set_all_format_specs(char *option)
{
	char *p;

	for (p = VALID_SPECS; *p; p++)
		if (override_format[(int)(*p)] == NULL)
			override_format[(int)(*p)] = strdup(option);
}

int add_format_spec(char *option)
{
	int spec = optarg[0];

	if (!valid_spec(spec)) {
		fprintf(stderr,"Bad format specifier %c\n", spec);
		return 1;
	}
	if (optarg[1] != ',') {
		fprintf(stderr,"Bad format specifier - need ',' %s\n", option);
		return 1;
	}
	option += 2;

	override_format[spec] = strdup(option);

	return 0;
}

static inline void fill_rwbs(char *rwbs, struct blk_io_trace *t)
{
	int w = t->action & BLK_TC_ACT(BLK_TC_WRITE);
	int a = t->action & BLK_TC_ACT(BLK_TC_AHEAD);
	int b = t->action & BLK_TC_ACT(BLK_TC_BARRIER);
	int s = t->action & BLK_TC_ACT(BLK_TC_SYNC);
	int m = t->action & BLK_TC_ACT(BLK_TC_META);
	int d = t->action & BLK_TC_ACT(BLK_TC_DISCARD);
	int i = 0;

	if (d)
		rwbs[i++] = 'D';
	else if (w)
		rwbs[i++] = 'W';
	else if (t->bytes)
		rwbs[i++] = 'R';
	else
		rwbs[i++] = 'N';
	if (a)
		rwbs[i++] = 'A';
	if (b)
		rwbs[i++] = 'B';
	if (s)
		rwbs[i++] = 'S';
	if (m)
		rwbs[i++] = 'M';

	rwbs[i] = '\0';
}

static const char *
print_time(unsigned long long timestamp)
{
	static char	timebuf[128];
	struct tm	*tm;
	time_t		sec;
	unsigned long	nsec;

	sec  = abs_start_time.tv_sec + SECONDS(timestamp);
	nsec = abs_start_time.tv_nsec + NANO_SECONDS(timestamp);
	if (nsec >= 1000000000) {
		nsec -= 1000000000;
		sec += 1;
	}

	tm = localtime(&sec);
	snprintf(timebuf, sizeof(timebuf),
			"%02u:%02u:%02u.%06lu",
			tm->tm_hour,
			tm->tm_min,
			tm->tm_sec,
			nsec / 1000);
	return timebuf;
}

static inline int pdu_rest_is_zero(unsigned char *pdu, int len)
{
	static char zero[4096];

	return !memcmp(pdu, zero, len);
}

static char *dump_pdu(unsigned char *pdu_buf, int pdu_len)
{
	static char p[4096];
	int i, len;

	if (!pdu_buf || !pdu_len)
		return NULL;

	for (len = 0, i = 0; i < pdu_len; i++) {
		if (i)
			len += sprintf(p + len, " ");

		len += sprintf(p + len, "%02x", pdu_buf[i]);

		/*
		 * usually dump for cdb dumps where we can see lots of
		 * zeroes, stop when the rest is just zeroes and indicate
		 * so with a .. appended
		 */
		if (!pdu_buf[i] && pdu_rest_is_zero(pdu_buf + i, pdu_len - i)) {
			sprintf(p + len, " ..");
			break;
		}
	}

	return p;
}

#define pdu_start(t)	(((void *) (t) + sizeof(struct blk_io_trace)))

static unsigned int get_pdu_int(struct blk_io_trace *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)
{
	struct blk_io_trace_remap *__r = pdu_start(t);
	__u64 sector = __r->sector;

	r->device = be32_to_cpu(__r->device);
	r->device_from = be32_to_cpu(__r->device_from);
	r->sector = be64_to_cpu(sector);
}

static void print_field(char *act, struct per_cpu_info *pci,
			struct blk_io_trace *t, unsigned long long elapsed,
			int pdu_len, unsigned char *pdu_buf, char field,
			int minus, int has_w, int width)
{
	char format[64];

	if (has_w) {
		if (minus)
			sprintf(format, "%%-%d", width);
		else
			sprintf(format, "%%%d", width);
	} else
		sprintf(format, "%%");

	switch (field) {
	case 'a':
		fprintf(ofp, strcat(format, "s"), act);
		break;
	case 'c':
		fprintf(ofp, strcat(format, "d"), pci->cpu);
		break;
	case 'C': {
		char *name = find_process_name(t->pid);

		fprintf(ofp, strcat(format, "s"), name);
		break;
	}
	case 'd': {
		char rwbs[6];

		fill_rwbs(rwbs, t);
		fprintf(ofp, strcat(format, "s"), rwbs);
		break;
	}
	case 'D':	/* format width ignored */
		fprintf(ofp,"%3d,%-3d", MAJOR(t->device), MINOR(t->device));
		break;
	case 'e':
		fprintf(ofp, strcat(format, "d"), t->error);
		break;
	case 'M':
		fprintf(ofp, strcat(format, "d"), MAJOR(t->device));
		break;
	case 'm':
		fprintf(ofp, strcat(format, "d"), MINOR(t->device));
		break;
	case 'n':
		fprintf(ofp, strcat(format, "u"), t_sec(t));
		break;
	case 'N':
		fprintf(ofp, strcat(format, "u"), t->bytes);
		break;
	case 'p':
		fprintf(ofp, strcat(format, "u"), t->pid);
		break;
	case 'P': { /* format width ignored */
		char *p = dump_pdu(pdu_buf, pdu_len);
		if (p)
			fprintf(ofp, "%s", p);
		break;
	}
	case 's':
		fprintf(ofp, strcat(format, "ld"), t->sequence);
		break;
	case 'S':
		fprintf(ofp, strcat(format, "lu"), t->sector);
		break;
	case 't':
		sprintf(format, "%%0%dlu", has_w ? width : 9);
		fprintf(ofp, format, NANO_SECONDS(t->time));
		break;
	case 'T':
		fprintf(ofp, strcat(format, "d"), SECONDS(t->time));
		break;
	case 'u':
		if (elapsed == -1ULL) {
			fprintf(stderr, "Expecting elapsed value\n");
			exit(1);
		}
		fprintf(ofp, strcat(format, "llu"), elapsed / 1000);
		break;
	case 'U':
		fprintf(ofp, strcat(format, "u"), get_pdu_int(t));
		break;
	case 'z':
		fprintf(ofp, strcat(format, "s"), print_time(t->time));
		break;
	default:
		fprintf(ofp,strcat(format, "c"), field);
		break;
	}
}

static char *parse_field(char *act, struct per_cpu_info *pci,
			 struct blk_io_trace *t, unsigned long long elapsed,
			 int pdu_len, unsigned char *pdu_buf,
			 char *master_format)
{
	int minus = 0;
	int has_w = 0;
	int width = 0;
	char *p = master_format;

	if (*p == '-') {
		minus = 1;
		p++;
	}
	if (isdigit(*p)) {
		has_w = 1;
		do {
			width = (width * 10) + (*p++ - '0');
		} while ((*p) && (isdigit(*p)));
	}
	if (*p) {
		print_field(act, pci, t, elapsed, pdu_len, pdu_buf, *p++,
			    minus, has_w, width);
	}
	return p;
}

static void process_default(char *act, struct per_cpu_info *pci,
			    struct blk_io_trace *t, unsigned long long elapsed,
			    int pdu_len, unsigned char *pdu_buf)
{
	struct blk_io_trace_remap r = { .device = 0, };
	char rwbs[6];
	char *name;

	fill_rwbs(rwbs, t);

	/*
	 * The header is always the same
	 */
	if (act[0] == 'A') {	/* Remap */
		get_pdu_remap(t, &r);
		t->device = r.device_from;
	}

	fprintf(ofp, "%3d,%-3d %2d %8d %5d.%09lu %5u %2s %3s ",
		MAJOR(t->device), MINOR(t->device), pci->cpu, t->sequence,
		(int) SECONDS(t->time), (unsigned long) NANO_SECONDS(t->time),
		t->pid, act, rwbs);

	name = find_process_name(t->pid);

	switch (act[0]) {
	case 'R':	/* Requeue */
	case 'C': 	/* Complete */
		if (t->action & BLK_TC_ACT(BLK_TC_PC)) {
			char *p = dump_pdu(pdu_buf, pdu_len);
			if (p)
				fprintf(ofp, "(%s) ", p);
			fprintf(ofp, "[%d]\n", t->error);
		} else {
			if (elapsed != -1ULL) {
				if (t_sec(t))
					fprintf(ofp, "%llu + %u (%8llu) [%d]\n",
						(unsigned long long) t->sector,
						t_sec(t), elapsed, t->error);
				else
					fprintf(ofp, "%llu (%8llu) [%d]\n",
						(unsigned long long) t->sector,
						elapsed, t->error);
			} else {
				if (t_sec(t))
					fprintf(ofp, "%llu + %u [%d]\n",
						(unsigned long long) t->sector,
						t_sec(t), t->error);
				else
					fprintf(ofp, "%llu [%d]\n",
						(unsigned long long) t->sector,
						t->error);
			}
		}
		break;

	case 'D': 	/* Issue */
	case 'I': 	/* Insert */
	case 'Q': 	/* Queue */
	case 'B':	/* Bounce */
		if (t->action & BLK_TC_ACT(BLK_TC_PC)) {
			char *p;
			fprintf(ofp, "%u ", t->bytes);
			p = dump_pdu(pdu_buf, pdu_len);
			if (p)
				fprintf(ofp, "(%s) ", p);
			fprintf(ofp, "[%s]\n", name);
		} else {
			if (elapsed != -1ULL) {
				if (t_sec(t))
					fprintf(ofp, "%llu + %u (%8llu) [%s]\n",
						(unsigned long long) t->sector,
						t_sec(t), elapsed, name);
				else
					fprintf(ofp, "(%8llu) [%s]\n", elapsed,
						name);
			} else {
				if (t_sec(t))
					fprintf(ofp, "%llu + %u [%s]\n",
						(unsigned long long) t->sector,
						t_sec(t), name);
				else
					fprintf(ofp, "[%s]\n", name);
			}
		}
		break;

	case 'M':	/* Back merge */
	case 'F':	/* Front merge */
	case 'G':	/* Get request */
	case 'S':	/* Sleep request */
		if (t_sec(t))
			fprintf(ofp, "%llu + %u [%s]\n",
				(unsigned long long) t->sector, t_sec(t), name);
		else
			fprintf(ofp, "[%s]\n", name);
		break;

	case 'P':	/* Plug */
		fprintf(ofp, "[%s]\n", name);
		break;

	case 'U':	/* Unplug IO */
	case 'T': 	/* Unplug timer */
		fprintf(ofp, "[%s] %u\n", name, get_pdu_int(t));
		break;

	case 'A': 	/* remap */
		fprintf(ofp, "%llu + %u <- (%d,%d) %llu\n",
			(unsigned long long) t->sector, t_sec(t),
			MAJOR(r.device), MINOR(r.device),
			(unsigned long long) r.sector);
		break;

	case 'X': 	/* Split */
		fprintf(ofp, "%llu / %u [%s]\n", (unsigned long long) t->sector,
			get_pdu_int(t), name);
		break;

	case 'm':	/* Message */
		fprintf(ofp, "%*s\n", pdu_len, pdu_buf);
		break;

	default:
		fprintf(stderr, "Unknown action %c\n", act[0]);
		break;
	}

}

void process_fmt(char *act, struct per_cpu_info *pci, struct blk_io_trace *t,
		 unsigned long long elapsed, int pdu_len,
		 unsigned char *pdu_buf)
{
	char *p = override_format[(int) *act];

	if (!p) {
		process_default(act, pci, t, elapsed, pdu_len, pdu_buf);
		return;
	}

	while (*p) {
		switch (*p) {
		case '%': 	/* Field specifier */
			p++;
			if (*p == '%')
				fprintf(ofp, "%c", *p++);
			else if (!*p)
				fprintf(ofp, "%c", '%');
			else
				p = parse_field(act, pci, t, elapsed,
						pdu_len, pdu_buf, p);
			break;
		case '\\': {	/* escape */
			switch (p[1]) {
			case 'b': fprintf(ofp, "\b"); break;
			case 'n': fprintf(ofp, "\n"); break;
			case 'r': fprintf(ofp, "\r"); break;
			case 't': fprintf(ofp, "\t"); break;
			default:
				fprintf(stderr,	
					"Invalid escape char in format %c\n",
					p[1]);
				exit(1);
				/*NOTREACHED*/
			}
			p += 2;
			break;
		}
		default:
			fprintf(ofp, "%c", *p++);
			break;
		}
	}
}
Commit	Line	Data
71d5d4c9 JA	1	/*
	2	* This file contains format parsing code for blkparse, allowing you to
	3	* customize the individual action format and generel output format.
	4	*/
	5	#include <stdio.h>
	6	#include <string.h>
	7	#include <stdlib.h>
	8	#include <unistd.h>
	9	#include <ctype.h>
7bd4fd0a	10	#include <time.h>
71d5d4c9 JA	11
	12	#include "blktrace.h"
	13
4c446dc0	14	#define VALID_SPECS "ABCDFGIMPQRSTUWX"
71d5d4c9 JA	15
	16	#define HEADER "%D %2c %8s %5T.%9t %5p %2a %3d "
	17
	18	static char *override_format[256];
	19
	20	static inline int valid_spec(int spec)
	21	{
	22	return strchr(VALID_SPECS, spec) != NULL;
	23	}
	24
e820abd7	25	void set_all_format_specs(char *option)
71d5d4c9 JA	26	{
	27	char *p;
	28
	29	for (p = VALID_SPECS; *p; p++)
	30	if (override_format[(int)(*p)] == NULL)
e820abd7	31	override_format[(int)(*p)] = strdup(option);
71d5d4c9 JA	32	}
71d5d4c9 JA	33
e820abd7	34	int add_format_spec(char *option)
71d5d4c9 JA	35	{
	36	int spec = optarg[0];
	37
	38	if (!valid_spec(spec)) {
	39	fprintf(stderr,"Bad format specifier %c\n", spec);
	40	return 1;
	41	}
	42	if (optarg[1] != ',') {
e820abd7	43	fprintf(stderr,"Bad format specifier - need ',' %s\n", option);
71d5d4c9 JA	44	return 1;
71d5d4c9 JA	45	}
e820abd7	46	option += 2;
71d5d4c9	47
0ac4c20e	48	override_format[spec] = strdup(option);
71d5d4c9 JA	49
	50	return 0;
	51	}
	52
768277cc JA	53	static inline void fill_rwbs(char rwbs, struct blk_io_trace t)
	54	{
	55	int w = t->action & BLK_TC_ACT(BLK_TC_WRITE);
f86990ed	56	int a = t->action & BLK_TC_ACT(BLK_TC_AHEAD);
768277cc JA	57	int b = t->action & BLK_TC_ACT(BLK_TC_BARRIER);
768277cc JA	58	int s = t->action & BLK_TC_ACT(BLK_TC_SYNC);
711e4d25	59	int m = t->action & BLK_TC_ACT(BLK_TC_META);
37081bf5	60	int d = t->action & BLK_TC_ACT(BLK_TC_DISCARD);
768277cc JA	61	int i = 0;
768277cc JA	62
37081bf5 DW	63	if (d)
	64	rwbs[i++] = 'D';
	65	else if (w)
768277cc	66	rwbs[i++] = 'W';
d57450af	67	else if (t->bytes)
768277cc	68	rwbs[i++] = 'R';
d57450af JA	69	else
d57450af JA	70	rwbs[i++] = 'N';
f86990ed NS	71	if (a)
f86990ed NS	72	rwbs[i++] = 'A';
768277cc JA	73	if (b)
	74	rwbs[i++] = 'B';
	75	if (s)
	76	rwbs[i++] = 'S';
711e4d25 JA	77	if (m)
711e4d25 JA	78	rwbs[i++] = 'M';
768277cc JA	79
	80	rwbs[i] = '\0';
	81	}
	82
7bd4fd0a OK	83	static const char *
	84	print_time(unsigned long long timestamp)
	85	{
	86	static char timebuf[128];
	87	struct tm *tm;
	88	time_t sec;
	89	unsigned long nsec;
	90
	91	sec = abs_start_time.tv_sec + SECONDS(timestamp);
	92	nsec = abs_start_time.tv_nsec + NANO_SECONDS(timestamp);
	93	if (nsec >= 1000000000) {
	94	nsec -= 1000000000;
	95	sec += 1;
	96	}
	97
	98	tm = localtime(&sec);
	99	snprintf(timebuf, sizeof(timebuf),
	100	"%02u:%02u:%02u.%06lu",
	101	tm->tm_hour,
	102	tm->tm_min,
	103	tm->tm_sec,
	104	nsec / 1000);
	105	return timebuf;
	106	}
	107
63756b50	108	static inline int pdu_rest_is_zero(unsigned char *pdu, int len)
1d6376a5	109	{
63756b50	110	static char zero[4096];
1d6376a5	111
63756b50	112	return !memcmp(pdu, zero, len);
1d6376a5 JA	113	}
1d6376a5 JA	114
768277cc JA	115	static char dump_pdu(unsigned char pdu_buf, int pdu_len)
	116	{
	117	static char p[4096];
	118	int i, len;
	119
	120	if (!pdu_buf \|\| !pdu_len)
	121	return NULL;
	122
	123	for (len = 0, i = 0; i < pdu_len; i++) {
	124	if (i)
	125	len += sprintf(p + len, " ");
	126
	127	len += sprintf(p + len, "%02x", pdu_buf[i]);
1d6376a5 JA	128
	129	/*
	130	* usually dump for cdb dumps where we can see lots of
	131	* zeroes, stop when the rest is just zeroes and indicate
	132	* so with a .. appended
	133	*/
	134	if (!pdu_buf[i] && pdu_rest_is_zero(pdu_buf + i, pdu_len - i)) {
	135	sprintf(p + len, " ..");
	136	break;
	137	}
768277cc JA	138	}
	139
	140	return p;
	141	}
	142
a8f30e64 JA	143	#define pdu_start(t) (((void *) (t) + sizeof(struct blk_io_trace)))
a8f30e64 JA	144
768277cc JA	145	static unsigned int get_pdu_int(struct blk_io_trace *t)
768277cc JA	146	{
a8f30e64	147	__u64 *val = pdu_start(t);
768277cc JA	148
	149	return be64_to_cpu(*val);
	150	}
	151
a8f30e64 JA	152	static void get_pdu_remap(struct blk_io_trace t, struct blk_io_trace_remap r)
	153	{
	154	struct blk_io_trace_remap *__r = pdu_start(t);
663af819	155	__u64 sector = __r->sector;
a8f30e64 JA	156
a8f30e64 JA	157	r->device = be32_to_cpu(__r->device);
97d13fb0	158	r->device_from = be32_to_cpu(__r->device_from);
663af819	159	r->sector = be64_to_cpu(sector);
a8f30e64 JA	160	}
a8f30e64 JA	161
71d5d4c9 JA	162	static void print_field(char act, struct per_cpu_info pci,
	163	struct blk_io_trace *t, unsigned long long elapsed,
	164	int pdu_len, unsigned char *pdu_buf, char field,
	165	int minus, int has_w, int width)
	166	{
	167	char format[64];
	168
	169	if (has_w) {
	170	if (minus)
	171	sprintf(format, "%%-%d", width);
	172	else
	173	sprintf(format, "%%%d", width);
	174	} else
	175	sprintf(format, "%%");
	176
	177	switch (field) {
	178	case 'a':
	179	fprintf(ofp, strcat(format, "s"), act);
	180	break;
	181	case 'c':
	182	fprintf(ofp, strcat(format, "d"), pci->cpu);
	183	break;
bfc70ad5 JA	184	case 'C': {
	185	char *name = find_process_name(t->pid);
	186
	187	fprintf(ofp, strcat(format, "s"), name);
71d5d4c9	188	break;
bfc70ad5	189	}
71d5d4c9	190	case 'd': {
711e4d25	191	char rwbs[6];
768277cc JA	192
768277cc JA	193	fill_rwbs(rwbs, t);
71d5d4c9 JA	194	fprintf(ofp, strcat(format, "s"), rwbs);
	195	break;
	196	}
	197	case 'D': /* format width ignored */
	198	fprintf(ofp,"%3d,%-3d", MAJOR(t->device), MINOR(t->device));
	199	break;
	200	case 'e':
	201	fprintf(ofp, strcat(format, "d"), t->error);
	202	break;
	203	case 'M':
	204	fprintf(ofp, strcat(format, "d"), MAJOR(t->device));
	205	break;
	206	case 'm':
	207	fprintf(ofp, strcat(format, "d"), MINOR(t->device));
	208	break;
	209	case 'n':
ae957cbc	210	fprintf(ofp, strcat(format, "u"), t_sec(t));
71d5d4c9	211	break;
1c8ca7b5 JA	212	case 'N':
	213	fprintf(ofp, strcat(format, "u"), t->bytes);
	214	break;
71d5d4c9 JA	215	case 'p':
	216	fprintf(ofp, strcat(format, "u"), t->pid);
	217	break;
768277cc JA	218	case 'P': { /* format width ignored */
	219	char *p = dump_pdu(pdu_buf, pdu_len);
	220	if (p)
	221	fprintf(ofp, "%s", p);
71d5d4c9	222	break;
768277cc	223	}
71d5d4c9 JA	224	case 's':
	225	fprintf(ofp, strcat(format, "ld"), t->sequence);
	226	break;
	227	case 'S':
	228	fprintf(ofp, strcat(format, "lu"), t->sector);
	229	break;
	230	case 't':
	231	sprintf(format, "%%0%dlu", has_w ? width : 9);
	232	fprintf(ofp, format, NANO_SECONDS(t->time));
	233	break;
	234	case 'T':
	235	fprintf(ofp, strcat(format, "d"), SECONDS(t->time));
	236	break;
	237	case 'u':
	238	if (elapsed == -1ULL) {
	239	fprintf(stderr, "Expecting elapsed value\n");
	240	exit(1);
	241	}
	242	fprintf(ofp, strcat(format, "llu"), elapsed / 1000);
	243	break;
7bd4fd0a	244	case 'U':
768277cc	245	fprintf(ofp, strcat(format, "u"), get_pdu_int(t));
71d5d4c9	246	break;
7bd4fd0a OK	247	case 'z':
	248	fprintf(ofp, strcat(format, "s"), print_time(t->time));
	249	break;
71d5d4c9 JA	250	default:
	251	fprintf(ofp,strcat(format, "c"), field);
	252	break;
	253	}
	254	}
	255
768277cc JA	256	static char parse_field(char act, struct per_cpu_info *pci,
	257	struct blk_io_trace *t, unsigned long long elapsed,
	258	int pdu_len, unsigned char *pdu_buf,
71d5d4c9 JA	259	char *master_format)
	260	{
	261	int minus = 0;
	262	int has_w = 0;
	263	int width = 0;
	264	char *p = master_format;
	265
	266	if (*p == '-') {
	267	minus = 1;
	268	p++;
	269	}
	270	if (isdigit(*p)) {
	271	has_w = 1;
	272	do {
	273	width = (width * 10) + (*p++ - '0');
	274	} while ((p) && (isdigit(p)));
	275	}
	276	if (*p) {
	277	print_field(act, pci, t, elapsed, pdu_len, pdu_buf, *p++,
	278	minus, has_w, width);
	279	}
	280	return p;
	281	}
	282
768277cc JA	283	static void process_default(char act, struct per_cpu_info pci,
	284	struct blk_io_trace *t, unsigned long long elapsed,
	285	int pdu_len, unsigned char *pdu_buf)
71d5d4c9	286	{
97d13fb0	287	struct blk_io_trace_remap r = { .device = 0, };
711e4d25	288	char rwbs[6];
bfc70ad5	289	char *name;
71d5d4c9	290
768277cc JA	291	fill_rwbs(rwbs, t);
	292
	293	/*
	294	* The header is always the same
	295	*/
97d13fb0 AB	296	if (act[0] == 'A') { /* Remap */
	297	get_pdu_remap(t, &r);
	298	t->device = r.device_from;
	299	}
	300
768277cc JA	301	fprintf(ofp, "%3d,%-3d %2d %8d %5d.%09lu %5u %2s %3s ",
	302	MAJOR(t->device), MINOR(t->device), pci->cpu, t->sequence,
	303	(int) SECONDS(t->time), (unsigned long) NANO_SECONDS(t->time),
	304	t->pid, act, rwbs);
71d5d4c9	305
bfc70ad5 JA	306	name = find_process_name(t->pid);
bfc70ad5 JA	307
768277cc	308	switch (act[0]) {
80c53608	309	case 'R': /* Requeue */
71d5d4c9	310	case 'C': /* Complete */
768277cc JA	311	if (t->action & BLK_TC_ACT(BLK_TC_PC)) {
	312	char *p = dump_pdu(pdu_buf, pdu_len);
	313	if (p)
	314	fprintf(ofp, "(%s) ", p);
	315	fprintf(ofp, "[%d]\n", t->error);
	316	} else {
71d5d4c9	317	if (elapsed != -1ULL) {
d57450af JA	318	if (t_sec(t))
	319	fprintf(ofp, "%llu + %u (%8llu) [%d]\n",
	320	(unsigned long long) t->sector,
	321	t_sec(t), elapsed, t->error);
	322	else
	323	fprintf(ofp, "%llu (%8llu) [%d]\n",
	324	(unsigned long long) t->sector,
	325	elapsed, t->error);
768277cc	326	} else {
d57450af JA	327	if (t_sec(t))
	328	fprintf(ofp, "%llu + %u [%d]\n",
	329	(unsigned long long) t->sector,
	330	t_sec(t), t->error);
	331	else
	332	fprintf(ofp, "%llu [%d]\n",
	333	(unsigned long long) t->sector,
	334	t->error);
768277cc	335	}
71d5d4c9	336	}
71d5d4c9 JA	337	break;
	338
	339	case 'D': /* Issue */
71d5d4c9	340	case 'I': /* Insert */
71d5d4c9	341	case 'Q': /* Queue */
bd5e71cf	342	case 'B': /* Bounce */
768277cc JA	343	if (t->action & BLK_TC_ACT(BLK_TC_PC)) {
768277cc JA	344	char *p;
1c8ca7b5	345	fprintf(ofp, "%u ", t->bytes);
768277cc JA	346	p = dump_pdu(pdu_buf, pdu_len);
	347	if (p)
	348	fprintf(ofp, "(%s) ", p);
bfc70ad5	349	fprintf(ofp, "[%s]\n", name);
768277cc JA	350	} else {
768277cc JA	351	if (elapsed != -1ULL) {
d57450af JA	352	if (t_sec(t))
	353	fprintf(ofp, "%llu + %u (%8llu) [%s]\n",
	354	(unsigned long long) t->sector,
	355	t_sec(t), elapsed, name);
	356	else
	357	fprintf(ofp, "(%8llu) [%s]\n", elapsed,
	358	name);
768277cc	359	} else {
d57450af JA	360	if (t_sec(t))
	361	fprintf(ofp, "%llu + %u [%s]\n",
	362	(unsigned long long) t->sector,
	363	t_sec(t), name);
	364	else
	365	fprintf(ofp, "[%s]\n", name);
768277cc JA	366	}
768277cc JA	367	}
71d5d4c9 JA	368	break;
71d5d4c9 JA	369
bd5e71cf	370	case 'M': /* Back merge */
71d5d4c9	371	case 'F': /* Front merge */
768277cc JA	372	case 'G': /* Get request */
768277cc JA	373	case 'S': /* Sleep request */
d57450af JA	374	if (t_sec(t))
	375	fprintf(ofp, "%llu + %u [%s]\n",
	376	(unsigned long long) t->sector, t_sec(t), name);
	377	else
	378	fprintf(ofp, "[%s]\n", name);
71d5d4c9 JA	379	break;
	380
	381	case 'P': /* Plug */
bfc70ad5	382	fprintf(ofp, "[%s]\n", name);
71d5d4c9 JA	383	break;
	384
	385	case 'U': /* Unplug IO */
a8f30e64	386	case 'T': /* Unplug timer */
bfc70ad5	387	fprintf(ofp, "[%s] %u\n", name, get_pdu_int(t));
71d5d4c9 JA	388	break;
71d5d4c9 JA	389
97d13fb0	390	case 'A': /* remap */
a8f30e64	391	fprintf(ofp, "%llu + %u <- (%d,%d) %llu\n",
e9f883ca	392	(unsigned long long) t->sector, t_sec(t),
a8f30e64	393	MAJOR(r.device), MINOR(r.device),
e9f883ca	394	(unsigned long long) r.sector);
a8f30e64	395	break;
1a15f6a8	396
71d5d4c9	397	case 'X': /* Split */
768277cc	398	fprintf(ofp, "%llu / %u [%s]\n", (unsigned long long) t->sector,
bfc70ad5	399	get_pdu_int(t), name);
71d5d4c9 JA	400	break;
71d5d4c9 JA	401
1a15f6a8 AB	402	case 'm': /* Message */
	403	fprintf(ofp, "%*s\n", pdu_len, pdu_buf);
	404	break;
	405
71d5d4c9	406	default:
768277cc JA	407	fprintf(stderr, "Unknown action %c\n", act[0]);
768277cc JA	408	break;
71d5d4c9 JA	409	}
71d5d4c9 JA	410
71d5d4c9 JA	411	}
	412
	413	void process_fmt(char act, struct per_cpu_info pci, struct blk_io_trace *t,
	414	unsigned long long elapsed, int pdu_len,
	415	unsigned char *pdu_buf)
	416	{
768277cc JA	417	char p = override_format[(int) act];
	418
	419	if (!p) {
	420	process_default(act, pci, t, elapsed, pdu_len, pdu_buf);
	421	return;
	422	}
71d5d4c9 JA	423
	424	while (*p) {
	425	switch (*p) {
	426	case '%': /* Field specifier */
	427	p++;
	428	if (*p == '%')
	429	fprintf(ofp, "%c", *p++);
	430	else if (!*p)
	431	fprintf(ofp, "%c", '%');
	432	else
	433	p = parse_field(act, pci, t, elapsed,
	434	pdu_len, pdu_buf, p);
	435	break;
	436	case '\\': { /* escape */
	437	switch (p[1]) {
	438	case 'b': fprintf(ofp, "\b"); break;
	439	case 'n': fprintf(ofp, "\n"); break;
	440	case 'r': fprintf(ofp, "\r"); break;
	441	case 't': fprintf(ofp, "\t"); break;
	442	default:
	443	fprintf(stderr,
	444	"Invalid escape char in format %c\n",
	445	p[1]);
	446	exit(1);
	447	/NOTREACHED/
	448	}
	449	p += 2;
	450	break;
	451	}
	452	default:
	453	fprintf(ofp, "%c", *p++);
	454	break;
	455	}
	456	}
	457	}
	458
	459