[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;
	}

	/*
	 * Set both merges (front and back)
	 */
	if (spec == 'M') {
		override_format['B'] = strdup(option);
		override_format['M'] = strdup(option);
	} else
		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
		rwbs[i++] = 'R';
	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) {
				fprintf(ofp, "%llu + %u (%8llu) [%d]\n",
					(unsigned long long) t->sector,
					t_sec(t), elapsed, t->error);
			} else {
				fprintf(ofp, "%llu + %u [%d]\n",
					(unsigned long long) t->sector,
					t_sec(t), t->error);
			}
		}
		break;

	case 'D': 	/* Issue */
	case 'I': 	/* Insert */
	case 'Q': 	/* Queue */
	case 'W':	/* 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) {
				fprintf(ofp, "%llu + %u (%8llu) [%s]\n",
					(unsigned long long) t->sector,
					t_sec(t), elapsed, name);
			} else {
				fprintf(ofp, "%llu + %u [%s]\n",
					(unsigned long long) t->sector,
					t_sec(t), name);
			}
		}
		break;

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