1 files changed, 347 insertions, 0 deletions
diff --git a/btt/globals.h b/btt/globals.h
new file mode 100644
index 0000000..d05d996
--- /dev/null
+++ b/btt/globals.h
@@ -0,0 +1,347 @@
+/*
+ * blktrace output analysis: generate a timeline & gather statistics
+ *
+ * Copyright (C) 2006 Alan D. Brunelle <Alan.Brunelle@hp.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+#include <stdio.h>
+#include <string.h>
+#include <time.h>
+
+#include "blktrace.h"
+#include "rbtree.h"
+#include "list.h"
+
+/*
+ * 0 == 1 blk
+ * 1 == 2 blks
+ * ...
+ * 1022 == 1023 blks
+ * 1023 == 1024 blks
+ * 1024 == > 1024 blks
+ */
+#define N_HIST_BKTS	1025
+
+#define BIT_TIME(t)	((double)SECONDS(t) + ((double)NANO_SECONDS(t) / 1.0e9))
+
+#define BIT_START(iop)	((iop)->t.sector)
+#define BIT_END(iop)	((iop)->t.sector + ((iop)->t.bytes >> 9))
+#define IOP_READ(iop)	((iop)->t.action & BLK_TC_ACT(BLK_TC_READ))
+#define IOP_RW(iop)	(IOP_READ(iop) ? 1 : 0)
+
+#define TO_SEC(nanosec)	((double)(nanosec) / 1.0e9)
+#define TO_MSEC(nanosec) (1000.0 * TO_SEC(nanosec))
+
+enum iop_type {
+	IOP_Q = 0,
+	IOP_X = 1,
+	IOP_A = 2,
+	IOP_G = 3,
+	IOP_M = 4,
+	IOP_D = 5,
+	IOP_C = 6,
+	IOP_R = 7,
+	IOP_I = 8,
+	IOP_S = 9
+};
+#define N_IOP_TYPES	(IOP_S + 1)
+
+struct mode {
+	int most_seeks, nmds;
+	long long *modes;
+};
+
+struct io;
+struct io_list {
+	struct list_head head;
+	struct io *iop;
+	int cy_users;
+};
+
+struct avg_info {
+	__u64 min, max, total;
+	double avg;
+	int n;
+};
+
+struct avgs_info {
+        struct avg_info q2q_dm;
+        struct avg_info q2a_dm;
+        struct avg_info q2c_dm;
+
+        struct avg_info q2q;
+	struct avg_info q2a;
+	struct avg_info q2g;
+	struct avg_info s2g;
+	struct avg_info g2i;
+	struct avg_info q2m;
+	struct avg_info i2d;
+	struct avg_info m2d;
+	struct avg_info d2c;
+	struct avg_info q2c;
+
+	struct avg_info blks;		/* Blocks transferred */
+};
+
+struct range_info {
+	struct list_head head;		/* on: qranges OR cranges */
+	__u64 start, end;
+};
+
+struct region_info {
+	struct list_head qranges;
+	struct list_head cranges;
+};
+
+struct p_info {
+	struct region_info regions;
+	struct avgs_info avgs;
+	__u64 last_q;
+	__u32 pid;
+	char *name;
+};
+
+struct stats {
+	__u64 rqm[2], ios[2], sec[2], wait, svctm;
+	double last_qu_change, last_dev_change, tot_qusz, idle_time;
+	int cur_qusz, cur_dev;
+};
+
+struct stats_t {
+	double n;
+	double rqm_s[2], ios_s[2], sec_s[2];
+	double avgrq_sz, avgqu_sz, await, svctm, p_util;
+};
+
+struct d_info {
+	struct list_head all_head, hash_head;
+	void *heads;
+	struct region_info regions;
+	char *devmap;
+	void *q2q_handle, *seek_handle, *bno_dump_handle, *up_hist_handle;
+	void *q2d_priv, *aqd_handle;
+	void *q2d_plat_handle, *q2c_plat_handle, *d2c_plat_handle;
+	FILE *q2d_ofp, *d2c_ofp, *q2c_ofp, *pit_fp;
+	struct avgs_info avgs;
+	struct stats stats, all_stats;
+	__u64 last_q, n_qs, n_ds;
+	__u64 n_act_q, t_act_q;	/* # currently active when Q comes in */
+	__u32 device;
+
+	int pre_culling;
+	int is_plugged, nplugs, nplugs_t;
+	__u64 nios_up, nios_upt;
+	double start_time, last_plug, plugged_time, end_time;
+};
+
+struct io {
+	struct rb_node rb_node;
+	struct list_head f_head, a_head;
+	struct d_info *dip;
+	struct p_info *pip;
+	void *pdu;
+	__u64 bytes_left, g_time, i_time, m_time, d_time, c_time, d_sec, c_sec;
+	__u64 s_time;
+	__u32 d_nsec, c_nsec;
+
+	struct blk_io_trace t;
+
+	int linked;
+	enum iop_type type;
+};
+
+/* bt_timeline.c */
+
+extern char bt_timeline_version[], *devices, *exes, *input_name, *output_name;
+extern char *seek_name, *iostat_name, *d2c_name, *q2c_name, *per_io_name;
+extern char *bno_dump_name, *unplug_hist_name, *sps_name, *aqd_name, *q2d_name;
+extern char *per_io_trees;
+extern double range_delta, plat_freq;
+extern FILE *rngs_ofp, *avgs_ofp, *xavgs_ofp, *iostat_ofp, *per_io_ofp;
+extern FILE *msgs_ofp;
+extern int verbose, done, time_bounded, output_all_data, seek_absolute;
+extern int easy_parse_avgs, ignore_remaps;
+extern unsigned int n_devs;
+extern unsigned long n_traces;
+extern struct list_head all_devs, all_procs;
+extern struct avgs_info all_avgs;
+extern __u64 last_q;
+extern struct region_info all_regions;
+extern struct list_head all_ios, free_ios;
+extern __u64 iostat_interval, iostat_last_stamp;
+extern time_t genesis, last_vtrace;
+extern double t_astart, t_aend;
+extern __u64 q_histo[N_HIST_BKTS], d_histo[N_HIST_BKTS];
+
+/* args.c */
+void handle_args(int argc, char *argv[]);
+void clean_args();
+
+/* aqd.c */
+void *aqd_alloc(char *str);
+void aqd_free(void *info);
+void aqd_clean(void);
+void aqd_issue(void *info, double ts);
+void aqd_complete(void *info, double ts);
+
+/* devmap.c */
+int dev_map_read(char *fname);
+char *dev_map_find(__u32 device);
+void dev_map_exit(void);
+
+/* devs.c */
+void init_dev_heads(void);
+struct d_info *dip_alloc(__u32 device, struct io *iop);
+void iop_rem_dip(struct io *iop);
+struct d_info *__dip_find(__u32 device);
+void dip_foreach_list(struct io *iop, enum iop_type type, struct list_head *hd);
+void dip_foreach(struct io *iop, enum iop_type type,
+		 void (*fnc)(struct io *iop, struct io *this), int rm_after);
+struct io *dip_find_sec(struct d_info *dip, enum iop_type type, __u64 sec);
+void dip_foreach_out(void (*func)(struct d_info *, void *), void *arg);
+void dip_plug(__u32 dev, double cur_time);
+void dip_unplug(__u32 dev, double cur_time, __u64 nio_ups);
+void dip_unplug_tm(__u32 dev, double cur_time, __u64 nio_ups);
+void dip_exit(void);
+void dip_cleanup(void);
+
+/* dip_rb.c */
+int rb_insert(struct rb_root *root, struct io *iop);
+struct io *rb_find_sec(struct rb_root *root, __u64 sec);
+void rb_foreach(struct rb_node *n, struct io *iop,
+		      void (*fnc)(struct io *iop, struct io *this),
+		      struct list_head *head);
+
+/* iostat.c */
+void iostat_init(void);
+void iostat_getrq(struct io *iop);
+void iostat_merge(struct io *iop);
+void iostat_issue(struct io *iop);
+void iostat_complete(struct io *d_iop, struct io *c_iop);
+void iostat_check_time(__u64 stamp);
+void iostat_dump_stats(__u64 stamp, int all);
+
+/* latency.c */
+void latency_alloc(struct d_info *dip);
+void latency_clean(void);
+void latency_q2d(struct d_info *dip, __u64 tstamp, __u64 latency);
+void latency_d2c(struct d_info *dip, __u64 tstamp, __u64 latency);
+void latency_q2c(struct d_info *dip, __u64 tstamp, __u64 latency);
+
+/* misc.c */
+void add_file(FILE *fp, char *oname);
+void add_buf(void *buf);
+char *make_dev_hdr(char *pad, size_t len, struct d_info *dip, int add_parens);
+FILE *my_fopen(const char *path, const char *mode);
+int my_open(const char *path, int flags);
+void dbg_ping(void);
+void clean_allocs(void);
+
+/* mmap.c */
+void setup_ifile(char *fname);
+void cleanup_ifile(void);
+int next_trace(struct blk_io_trace *t, void **pdu);
+double pct_done(void);
+
+/* output.c */
+int output_avgs(FILE *ofp);
+int output_ranges(FILE *ofp);
+
+/* proc.c */
+void process_alloc(__u32 pid, char *name);
+struct p_info *find_process(__u32 pid, char *name);
+void pip_update_q(struct io *iop);
+void pip_foreach_out(void (*f)(struct p_info *, void *), void *arg);
+void pip_exit(void);
+
+/* bno_dump.c */
+void *bno_dump_alloc(__u32 device);
+void bno_dump_free(void *param);
+void bno_dump_add(void *handle, struct io *iop);
+void bno_dump_clean(void);
+
+/* plat.c */
+void *plat_alloc(char *str);
+void plat_free(void *info);
+void plat_clean(void);
+void plat_x2c(void *info, __u64 ts, __u64 latency);
+
+/* q2d.c */
+void q2d_histo_add(void *priv, __u64 q2d);
+void *q2d_alloc(void);
+void q2d_free(void *priv);
+void q2d_display_header(FILE *fp);
+void q2d_display_dashes(FILE *fp);
+void q2d_display(FILE *fp, void *priv);
+int q2d_ok(void *priv);
+void q2d_acc(void *a1, void *a2);
+
+/* seek.c */
+void *seeki_alloc(char *str);
+void seeki_free(void *param);
+void seek_clean(void);
+void seeki_add(void *handle, struct io *iop);
+double seeki_mean(void *handle);
+long long seeki_nseeks(void *handle);
+long long seeki_median(void *handle);
+int seeki_mode(void *handle, struct mode *mp);
+
+/* trace.c */
+void add_trace(struct io *iop);
+
+/* trace_complete.c */
+void trace_complete(struct io *c_iop);
+
+/* trace_im.c */
+void run_im(struct io *im_iop, struct io *d_iop, struct io *c_iop);
+void run_unim(struct io *im_iop, struct io *d_iop, struct io *c_iop);
+int ready_im(struct io *im_iop, struct io *c_iop);
+void trace_insert(struct io *i_iop);
+void trace_merge(struct io *m_iop);
+void trace_getrq(struct io *g_iop);
+void trace_sleeprq(struct io *s_iop);
+
+/* trace_issue.c */
+void run_issue(struct io *d_iop, struct io *u_iop, struct io *c_iop);
+void run_unissue(struct io *d_iop, struct io *u_iop, struct io *c_iop);
+int ready_issue(struct io *d_iop, struct io *c_iop);
+void trace_issue(struct io *d_iop);
+
+/* trace_plug.c */
+void trace_plug(struct io *p_iop);
+void trace_unplug_io(struct io *u_iop);
+void trace_unplug_timer(struct io *u_iop);
+
+/* trace_queue.c */
+void run_queue(struct io *q_iop, struct io *u_iop, struct io *c_iop);
+int ready_queue(struct io *q_iop, struct io *c_iop);
+void trace_queue(struct io *q_iop);
+
+/* trace_remap.c */
+void run_remap(struct io *a_iop, struct io *u_iop, struct io *c_iop);
+int ready_remap(struct io *a_iop, struct io *c_iop);
+void trace_remap(struct io *a_iop);
+
+/* trace_requeue.c */
+void trace_requeue(struct io *r_iop);
+
+/* unplug_hist.c */
+void *unplug_hist_alloc(__u32 device);
+void unplug_hist_free(void *arg);
+void unplug_hist_add(struct io *u_iop);
+
+#include "inlines.h"