[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;
	if (*option == '\0') {
		fprintf(stderr,"Bad format specifier - need fmt %s\n", option);
		return 1;
	}

	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 i = 0;

	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;

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