First step for group reporting

Put most of the stats into a dedicated structure, so we can
later share such a structure between threads.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/fio.c b/fio.c
index 4596544..e4fec4f 100644
--- a/fio.c
+++ b/fio.c
@@ -597,7 +597,7 @@
 	struct fio_file *f;
 	int i;
 
-	td->stat_io_bytes[0] = td->stat_io_bytes[1] = 0;
+	td->ts.stat_io_bytes[0] = td->ts.stat_io_bytes[1] = 0;
 	td->this_io_bytes[0] = td->this_io_bytes[1] = 0;
 	td->zone_bytes = 0;
 
@@ -686,15 +686,15 @@
 	}
 
 	fio_gettime(&td->epoch, NULL);
-	getrusage(RUSAGE_SELF, &td->ru_start);
+	getrusage(RUSAGE_SELF, &td->ts.ru_start);
 
 	runtime[0] = runtime[1] = 0;
 	while (td->loops--) {
 		fio_gettime(&td->start, NULL);
-		memcpy(&td->stat_sample_time, &td->start, sizeof(td->start));
+		memcpy(&td->ts.stat_sample_time, &td->start, sizeof(td->start));
 
 		if (td->ratemin)
-			memcpy(&td->lastrate, &td->stat_sample_time, sizeof(td->lastrate));
+			memcpy(&td->lastrate, &td->ts.stat_sample_time, sizeof(td->lastrate));
 
 		clear_io_state(td);
 		prune_io_piece_log(td);
@@ -730,12 +730,12 @@
 	td->runtime[0] = runtime[0] / 1000;
 	td->runtime[1] = runtime[1] / 1000;
 
-	if (td->bw_log)
-		finish_log(td, td->bw_log, "bw");
-	if (td->slat_log)
-		finish_log(td, td->slat_log, "slat");
-	if (td->clat_log)
-		finish_log(td, td->clat_log, "clat");
+	if (td->ts.bw_log)
+		finish_log(td, td->ts.bw_log, "bw");
+	if (td->ts.slat_log)
+		finish_log(td, td->ts.slat_log, "slat");
+	if (td->ts.clat_log)
+		finish_log(td, td->ts.clat_log, "clat");
 	if (td->write_iolog_file)
 		write_iolog_close(td);
 	if (td->exec_postrun) {
diff --git a/fio.h b/fio.h
index 259166f..38de5e3 100644
--- a/fio.h
+++ b/fio.h
@@ -225,6 +225,31 @@
 	unsigned int unlink;
 };
 
+struct thread_stat {
+	struct io_log *slat_log;
+	struct io_log *clat_log;
+	struct io_log *bw_log;
+
+	/*
+	 * bandwidth and latency stats
+	 */
+	struct io_stat clat_stat[2];		/* completion latency */
+	struct io_stat slat_stat[2];		/* submission latency */
+	struct io_stat bw_stat[2];		/* bandwidth stats */
+
+	unsigned long long stat_io_bytes[2];
+	struct timeval stat_sample_time[2];
+
+	/*
+	 * fio system usage accounting
+	 */
+	struct rusage ru_start;
+	struct rusage ru_end;
+	unsigned long usr_time;
+	unsigned long sys_time;
+	unsigned long ctx;
+};
+
 /*
  * How many depth levels to log
  */
@@ -243,6 +268,7 @@
 	pthread_t thread;
 	int thread_number;
 	int groupid;
+	struct thread_stat ts;
 	enum fio_filetype filetype;
 	struct fio_file *files;
 	unsigned int nr_files;
@@ -357,8 +383,8 @@
 	unsigned long io_issues[2];
 	unsigned long long io_blocks[2];
 	unsigned long long io_bytes[2];
-	unsigned long long zone_bytes;
 	unsigned long long this_io_bytes[2];
+	unsigned long long zone_bytes;
 	volatile int mutex;
 
 	/*
@@ -372,34 +398,11 @@
 	unsigned int cpuload;
 	unsigned int cpucycle;
 
-	/*
-	 * bandwidth and latency stats
-	 */
-	struct io_stat clat_stat[2];		/* completion latency */
-	struct io_stat slat_stat[2];		/* submission latency */
-	struct io_stat bw_stat[2];		/* bandwidth stats */
-
-	unsigned long long stat_io_bytes[2];
-	struct timeval stat_sample_time[2];
-
-	struct io_log *slat_log;
-	struct io_log *clat_log;
-	struct io_log *bw_log;
-
 	struct timeval start;	/* start of this loop */
 	struct timeval epoch;	/* time job was started */
 	struct timeval end_time;/* time job ended */
 
 	/*
-	 * fio system usage accounting
-	 */
-	struct rusage ru_start;
-	struct rusage ru_end;
-	unsigned long usr_time;
-	unsigned long sys_time;
-	unsigned long ctx;
-
-	/*
 	 * read/write mixed workload state
 	 */
 	os_random_state_t rwmix_state;
diff --git a/init.c b/init.c
index 744ae85..6dc221e 100644
--- a/init.c
+++ b/init.c
@@ -752,9 +752,9 @@
 		
 	fio_sem_init(&td->mutex, 0);
 
-	td->clat_stat[0].min_val = td->clat_stat[1].min_val = ULONG_MAX;
-	td->slat_stat[0].min_val = td->slat_stat[1].min_val = ULONG_MAX;
-	td->bw_stat[0].min_val = td->bw_stat[1].min_val = ULONG_MAX;
+	td->ts.clat_stat[0].min_val = td->ts.clat_stat[1].min_val = ULONG_MAX;
+	td->ts.slat_stat[0].min_val = td->ts.slat_stat[1].min_val = ULONG_MAX;
+	td->ts.bw_stat[0].min_val = td->ts.bw_stat[1].min_val = ULONG_MAX;
 
 	if (td->stonewall && td->thread_number > 1)
 		groupid++;
@@ -765,11 +765,11 @@
 		goto err;
 
 	if (td->write_lat_log) {
-		setup_log(&td->slat_log);
-		setup_log(&td->clat_log);
+		setup_log(&td->ts.slat_log);
+		setup_log(&td->ts.clat_log);
 	}
 	if (td->write_bw_log)
-		setup_log(&td->bw_log);
+		setup_log(&td->ts.bw_log);
 
 	if (!td->name)
 		td->name = strdup(jobname);
diff --git a/stat.c b/stat.c
index 819a7c6..337b45f 100644
--- a/stat.c
+++ b/stat.c
@@ -310,13 +310,15 @@
 
 void update_rusage_stat(struct thread_data *td)
 {
-	getrusage(RUSAGE_SELF, &td->ru_end);
+	struct thread_stat *ts = &td->ts;
 
-	td->usr_time += mtime_since(&td->ru_start.ru_utime, &td->ru_end.ru_utime);
-	td->sys_time += mtime_since(&td->ru_start.ru_stime, &td->ru_end.ru_stime);
-	td->ctx += td->ru_end.ru_nvcsw + td->ru_end.ru_nivcsw - (td->ru_start.ru_nvcsw + td->ru_start.ru_nivcsw);
+	getrusage(RUSAGE_SELF, &ts->ru_end);
+
+	ts->usr_time += mtime_since(&ts->ru_start.ru_utime, &ts->ru_end.ru_utime);
+	ts->sys_time += mtime_since(&ts->ru_start.ru_stime, &ts->ru_end.ru_stime);
+	ts->ctx += ts->ru_end.ru_nvcsw + ts->ru_end.ru_nivcsw - (ts->ru_start.ru_nvcsw + ts->ru_start.ru_nivcsw);
 	
-	memcpy(&td->ru_start, &td->ru_end, sizeof(td->ru_end));
+	memcpy(&ts->ru_start, &ts->ru_end, sizeof(ts->ru_end));
 }
 
 static int calc_lat(struct io_stat *is, unsigned long *min, unsigned long *max,
@@ -402,6 +404,7 @@
 			     int ddir)
 {
 	const char *ddir_str[] = { "read ", "write" };
+	struct thread_stat *ts;
 	unsigned long min, max;
 	unsigned long long bw;
 	double mean, dev;
@@ -419,13 +422,14 @@
 	free(io_p);
 	free(bw_p);
 
-	if (calc_lat(&td->slat_stat[ddir], &min, &max, &mean, &dev))
+	ts = &td->ts;
+	if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
 		fprintf(f_out, "    slat (msec): min=%5lu, max=%5lu, avg=%5.02f, stdev=%5.02f\n", min, max, mean, dev);
 
-	if (calc_lat(&td->clat_stat[ddir], &min, &max, &mean, &dev))
+	if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
 		fprintf(f_out, "    clat (msec): min=%5lu, max=%5lu, avg=%5.02f, stdev=%5.02f\n", min, max, mean, dev);
 
-	if (calc_lat(&td->bw_stat[ddir], &min, &max, &mean, &dev)) {
+	if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
 		double p_of_agg;
 
 		p_of_agg = mean * 100 / (double) rs->agg[ddir];
@@ -458,14 +462,14 @@
 	if (runtime) {
 		double runt = (double) runtime;
 
-		usr_cpu = (double) td->usr_time * 100 / runt;
-		sys_cpu = (double) td->sys_time * 100 / runt;
+		usr_cpu = (double) td->ts.usr_time * 100 / runt;
+		sys_cpu = (double) td->ts.sys_time * 100 / runt;
 	} else {
 		usr_cpu = 0;
 		sys_cpu = 0;
 	}
 
-	fprintf(f_out, "  cpu          : usr=%3.2f%%, sys=%3.2f%%, ctx=%lu\n", usr_cpu, sys_cpu, td->ctx);
+	fprintf(f_out, "  cpu          : usr=%3.2f%%, sys=%3.2f%%, ctx=%lu\n", usr_cpu, sys_cpu, td->ts.ctx);
 
 	/*
 	 * Do depth distribution calculations
@@ -495,6 +499,7 @@
 static void show_ddir_status_terse(struct thread_data *td,
 				   struct group_run_stats *rs, int ddir)
 {
+	struct thread_stat *ts = &td->ts;
 	unsigned long min, max;
 	unsigned long long bw;
 	double mean, dev;
@@ -505,17 +510,17 @@
 
 	fprintf(f_out, ",%llu,%llu,%lu", td->io_bytes[ddir] >> 10, bw, td->runtime[ddir]);
 
-	if (calc_lat(&td->slat_stat[ddir], &min, &max, &mean, &dev))
+	if (calc_lat(&ts->slat_stat[ddir], &min, &max, &mean, &dev))
 		fprintf(f_out, ",%lu,%lu,%f,%f", min, max, mean, dev);
 	else
 		fprintf(f_out, ",%lu,%lu,%f,%f", 0UL, 0UL, 0.0, 0.0);
 
-	if (calc_lat(&td->clat_stat[ddir], &min, &max, &mean, &dev))
+	if (calc_lat(&ts->clat_stat[ddir], &min, &max, &mean, &dev))
 		fprintf(f_out, ",%lu,%lu,%f,%f", min, max, mean, dev);
 	else
 		fprintf(f_out, ",%lu,%lu,%f,%f", 0UL, 0UL, 0.0, 0.0);
 
-	if (calc_lat(&td->bw_stat[ddir], &min, &max, &mean, &dev)) {
+	if (calc_lat(&ts->bw_stat[ddir], &min, &max, &mean, &dev)) {
 		double p_of_agg;
 
 		p_of_agg = mean * 100 / (double) rs->agg[ddir];
@@ -539,14 +544,14 @@
 	if (td->runtime[0] + td->runtime[1]) {
 		double runt = (double) (td->runtime[0] + td->runtime[1]);
 
-		usr_cpu = (double) td->usr_time * 100 / runt;
-		sys_cpu = (double) td->sys_time * 100 / runt;
+		usr_cpu = (double) td->ts.usr_time * 100 / runt;
+		sys_cpu = (double) td->ts.sys_time * 100 / runt;
 	} else {
 		usr_cpu = 0;
 		sys_cpu = 0;
 	}
 
-	fprintf(f_out, ",%f%%,%f%%,%lu\n", usr_cpu, sys_cpu, td->ctx);
+	fprintf(f_out, ",%f%%,%f%%,%lu\n", usr_cpu, sys_cpu, td->ts.ctx);
 }
 
 void show_run_stats(void)
@@ -682,38 +687,41 @@
 void add_clat_sample(struct thread_data *td, enum fio_ddir ddir,
 		     unsigned long msec)
 {
-	add_stat_sample(&td->clat_stat[ddir], msec);
+	struct thread_stat *ts = &td->ts;
 
-	if (td->clat_log)
-		add_log_sample(td, td->clat_log, msec, ddir);
+	add_stat_sample(&ts->clat_stat[ddir], msec);
+
+	if (ts->clat_log)
+		add_log_sample(td, ts->clat_log, msec, ddir);
 }
 
 void add_slat_sample(struct thread_data *td, enum fio_ddir ddir,
 		     unsigned long msec)
 {
-	add_stat_sample(&td->slat_stat[ddir], msec);
+	struct thread_stat *ts = &td->ts;
 
-	if (td->slat_log)
-		add_log_sample(td, td->slat_log, msec, ddir);
+	add_stat_sample(&ts->slat_stat[ddir], msec);
+
+	if (ts->slat_log)
+		add_log_sample(td, ts->slat_log, msec, ddir);
 }
 
 void add_bw_sample(struct thread_data *td, enum fio_ddir ddir,
 		   struct timeval *t)
 {
-	unsigned long spent = mtime_since(&td->stat_sample_time[ddir], t);
+	struct thread_stat *ts = &td->ts;
+	unsigned long spent = mtime_since(&ts->stat_sample_time[ddir], t);
 	unsigned long rate;
 
 	if (spent < td->bw_avg_time)
 		return;
 
-	rate = (td->this_io_bytes[ddir] - td->stat_io_bytes[ddir]) / spent;
-	add_stat_sample(&td->bw_stat[ddir], rate);
+	rate = (td->this_io_bytes[ddir] - ts->stat_io_bytes[ddir]) / spent;
+	add_stat_sample(&ts->bw_stat[ddir], rate);
 
-	if (td->bw_log)
-		add_log_sample(td, td->bw_log, rate, ddir);
+	if (ts->bw_log)
+		add_log_sample(td, ts->bw_log, rate, ddir);
 
-	fio_gettime(&td->stat_sample_time[ddir], NULL);
-	td->stat_io_bytes[ddir] = td->this_io_bytes[ddir];
+	fio_gettime(&ts->stat_sample_time[ddir], NULL);
+	ts->stat_io_bytes[ddir] = td->this_io_bytes[ddir];
 }
-
-