tools/perf/util/sort.c - kernel/msm - Gitiles

 #include "sort.h"

 regex_t		parent_regex;
 const char	default_parent_pattern[] = "^sys_|^do_page_fault";
 const char	*parent_pattern = default_parent_pattern;
 const char	default_sort_order[] = "comm,dso,symbol";
 const char	*sort_order = default_sort_order;
 int		sort__need_collapse = 0;
 int		sort__has_parent = 0;

 enum sort_type	sort__first_dimension;

 unsigned int dsos__col_width;
 unsigned int comms__col_width;
 unsigned int threads__col_width;
 unsigned int cpus__col_width;
 static unsigned int parent_symbol__col_width;
 char * field_sep;

 LIST_HEAD(hist_entry__sort_list);

 static int hist_entry__thread_snprintf(struct hist_entry *self, char *bf,
 				       size_t size, unsigned int width);
 static int hist_entry__comm_snprintf(struct hist_entry *self, char *bf,
 				     size_t size, unsigned int width);
 static int hist_entry__dso_snprintf(struct hist_entry *self, char *bf,
 				    size_t size, unsigned int width);
 static int hist_entry__sym_snprintf(struct hist_entry *self, char *bf,
 				    size_t size, unsigned int width);
 static int hist_entry__parent_snprintf(struct hist_entry *self, char *bf,
 				       size_t size, unsigned int width);
 static int hist_entry__cpu_snprintf(struct hist_entry *self, char *bf,
 				    size_t size, unsigned int width);

 struct sort_entry sort_thread = {
 	.se_header	= "Command:  Pid",
 	.se_cmp		= sort__thread_cmp,
 	.se_snprintf	= hist_entry__thread_snprintf,
 	.se_width	= &threads__col_width,
 };

 struct sort_entry sort_comm = {
 	.se_header	= "Command",
 	.se_cmp		= sort__comm_cmp,
 	.se_collapse	= sort__comm_collapse,
 	.se_snprintf	= hist_entry__comm_snprintf,
 	.se_width	= &comms__col_width,
 };

 struct sort_entry sort_dso = {
 	.se_header	= "Shared Object",
 	.se_cmp		= sort__dso_cmp,
 	.se_snprintf	= hist_entry__dso_snprintf,
 	.se_width	= &dsos__col_width,
 };

 struct sort_entry sort_sym = {
 	.se_header	= "Symbol",
 	.se_cmp		= sort__sym_cmp,
 	.se_snprintf	= hist_entry__sym_snprintf,
 };

 struct sort_entry sort_parent = {
 	.se_header	= "Parent symbol",
 	.se_cmp		= sort__parent_cmp,
 	.se_snprintf	= hist_entry__parent_snprintf,
 	.se_width	= &parent_symbol__col_width,
 };

 struct sort_entry sort_cpu = {
 	.se_header      = "CPU",
 	.se_cmp	        = sort__cpu_cmp,
 	.se_snprintf    = hist_entry__cpu_snprintf,
 	.se_width	= &cpus__col_width,
 };

 struct sort_dimension {
 	const char		*name;
 	struct sort_entry	*entry;
 	int			taken;
 };

 static struct sort_dimension sort_dimensions[] = {
 	{ .name = "pid",	.entry = &sort_thread,	},
 	{ .name = "comm",	.entry = &sort_comm,	},
 	{ .name = "dso",	.entry = &sort_dso,	},
 	{ .name = "symbol",	.entry = &sort_sym,	},
 	{ .name = "parent",	.entry = &sort_parent,	},
 	{ .name = "cpu",	.entry = &sort_cpu,	},
 };

 int64_t cmp_null(void *l, void *r)
 {
 	if (!l && !r)
 		return 0;
 	else if (!l)
 		return -1;
 	else
 		return 1;
 }

 /* --sort pid */

 int64_t
 sort__thread_cmp(struct hist_entry *left, struct hist_entry *right)
 {
 	return right->thread->pid - left->thread->pid;
 }

 static int repsep_snprintf(char *bf, size_t size, const char *fmt, ...)
 {
 	int n;
 	va_list ap;

 	va_start(ap, fmt);
 	n = vsnprintf(bf, size, fmt, ap);
 	if (field_sep && n > 0) {
 		char *sep = bf;

 		while (1) {
 			sep = strchr(sep, *field_sep);
 			if (sep == NULL)
 				break;
 			*sep = '.';
 		}
 	}
 	va_end(ap);
 	return n;
 }

 static int hist_entry__thread_snprintf(struct hist_entry *self, char *bf,
 				       size_t size, unsigned int width)
 {
 	return repsep_snprintf(bf, size, "%*s:%5d", width,
 			      self->thread->comm ?: "", self->thread->pid);
 }

 static int hist_entry__comm_snprintf(struct hist_entry *self, char *bf,
 				     size_t size, unsigned int width)
 {
 	return repsep_snprintf(bf, size, "%*s", width, self->thread->comm);
 }

 /* --sort dso */

 int64_t
 sort__dso_cmp(struct hist_entry *left, struct hist_entry *right)
 {
 	struct dso *dso_l = left->ms.map ? left->ms.map->dso : NULL;
 	struct dso *dso_r = right->ms.map ? right->ms.map->dso : NULL;
 	const char *dso_name_l, *dso_name_r;

 	if (!dso_l || !dso_r)
 		return cmp_null(dso_l, dso_r);

 	if (verbose) {
 		dso_name_l = dso_l->long_name;
 		dso_name_r = dso_r->long_name;
 	} else {
 		dso_name_l = dso_l->short_name;
 		dso_name_r = dso_r->short_name;
 	}

 	return strcmp(dso_name_l, dso_name_r);
 }

 static int hist_entry__dso_snprintf(struct hist_entry *self, char *bf,
 				    size_t size, unsigned int width)
 {
 	if (self->ms.map && self->ms.map->dso) {
 		const char *dso_name = !verbose ? self->ms.map->dso->short_name :
 						  self->ms.map->dso->long_name;
 		return repsep_snprintf(bf, size, "%-*s", width, dso_name);
 	}

 	return repsep_snprintf(bf, size, "%*Lx", width, self->ip);
 }

 /* --sort symbol */

 int64_t
 sort__sym_cmp(struct hist_entry *left, struct hist_entry *right)
 {
 	u64 ip_l, ip_r;

 	if (left->ms.sym == right->ms.sym)
 		return 0;

 	ip_l = left->ms.sym ? left->ms.sym->start : left->ip;
 	ip_r = right->ms.sym ? right->ms.sym->start : right->ip;

 	return (int64_t)(ip_r - ip_l);
 }

 static int hist_entry__sym_snprintf(struct hist_entry *self, char *bf,
 				    size_t size, unsigned int width __used)
 {
 	size_t ret = 0;

 	if (verbose) {
 		char o = self->ms.map ? dso__symtab_origin(self->ms.map->dso) : '!';
 		ret += repsep_snprintf(bf, size, "%#018llx %c ", self->ip, o);
 	}

 	ret += repsep_snprintf(bf + ret, size - ret, "[%c] ", self->level);
 	if (self->ms.sym)
 		ret += repsep_snprintf(bf + ret, size - ret, "%s",
 				       self->ms.sym->name);
 	else
 		ret += repsep_snprintf(bf + ret, size - ret, "%#016llx", self->ip);

 	return ret;
 }

 /* --sort comm */

 int64_t
 sort__comm_cmp(struct hist_entry *left, struct hist_entry *right)
 {
 	return right->thread->pid - left->thread->pid;
 }

 int64_t
 sort__comm_collapse(struct hist_entry *left, struct hist_entry *right)
 {
 	char *comm_l = left->thread->comm;
 	char *comm_r = right->thread->comm;

 	if (!comm_l || !comm_r)
 		return cmp_null(comm_l, comm_r);

 	return strcmp(comm_l, comm_r);
 }

 /* --sort parent */

 int64_t
 sort__parent_cmp(struct hist_entry *left, struct hist_entry *right)
 {
 	struct symbol *sym_l = left->parent;
 	struct symbol *sym_r = right->parent;

 	if (!sym_l || !sym_r)
 		return cmp_null(sym_l, sym_r);

 	return strcmp(sym_l->name, sym_r->name);
 }

 static int hist_entry__parent_snprintf(struct hist_entry *self, char *bf,
 				       size_t size, unsigned int width)
 {
 	return repsep_snprintf(bf, size, "%-*s", width,
 			      self->parent ? self->parent->name : "[other]");
 }

 /* --sort cpu */

 int64_t
 sort__cpu_cmp(struct hist_entry *left, struct hist_entry *right)
 {
 	return right->cpu - left->cpu;
 }

 static int hist_entry__cpu_snprintf(struct hist_entry *self, char *bf,
 				       size_t size, unsigned int width)
 {
 	return repsep_snprintf(bf, size, "%-*d", width, self->cpu);
 }

 int sort_dimension__add(const char *tok)
 {
 	unsigned int i;

 	for (i = 0; i < ARRAY_SIZE(sort_dimensions); i++) {
 		struct sort_dimension *sd = &sort_dimensions[i];

 		if (sd->taken)
 			continue;

 		if (strncasecmp(tok, sd->name, strlen(tok)))
 			continue;

 		if (sd->entry->se_collapse)
 			sort__need_collapse = 1;

 		if (sd->entry == &sort_parent) {
 			int ret = regcomp(&parent_regex, parent_pattern, REG_EXTENDED);
 			if (ret) {
 				char err[BUFSIZ];

 				regerror(ret, &parent_regex, err, sizeof(err));
 				pr_err("Invalid regex: %s\n%s", parent_pattern, err);
 				return -EINVAL;
 			}
 			sort__has_parent = 1;
 		}

 		if (list_empty(&hist_entry__sort_list)) {
 			if (!strcmp(sd->name, "pid"))
 				sort__first_dimension = SORT_PID;
 			else if (!strcmp(sd->name, "comm"))
 				sort__first_dimension = SORT_COMM;
 			else if (!strcmp(sd->name, "dso"))
 				sort__first_dimension = SORT_DSO;
 			else if (!strcmp(sd->name, "symbol"))
 				sort__first_dimension = SORT_SYM;
 			else if (!strcmp(sd->name, "parent"))
 				sort__first_dimension = SORT_PARENT;
 			else if (!strcmp(sd->name, "cpu"))
 				sort__first_dimension = SORT_CPU;
 		}

 		list_add_tail(&sd->entry->list, &hist_entry__sort_list);
 		sd->taken = 1;

 		return 0;
 	}

 	return -ESRCH;
 }

 void setup_sorting(const char * const usagestr[], const struct option *opts)
 {
 	char *tmp, *tok, *str = strdup(sort_order);

 	for (tok = strtok_r(str, ", ", &tmp);
 			tok; tok = strtok_r(NULL, ", ", &tmp)) {
 		if (sort_dimension__add(tok) < 0) {
 			error("Unknown --sort key: `%s'", tok);
 			usage_with_options(usagestr, opts);
 		}
 	}

 	free(str);
 }

 void sort_entry__setup_elide(struct sort_entry *self, struct strlist *list,
 			     const char *list_name, FILE *fp)
 {
 	if (list && strlist__nr_entries(list) == 1) {
 		if (fp != NULL)
 			fprintf(fp, "# %s: %s\n", list_name,
 				strlist__entry(list, 0)->s);
 		self->elide = true;
 	}
 }
	#include "sort.h"

	regex_t parent_regex;
	const char default_parent_pattern[] = "^sys_\|^do_page_fault";
	const char *parent_pattern = default_parent_pattern;
	const char default_sort_order[] = "comm,dso,symbol";
	const char *sort_order = default_sort_order;
	int sort__need_collapse = 0;
	int sort__has_parent = 0;

	enum sort_type sort__first_dimension;

	unsigned int dsos__col_width;
	unsigned int comms__col_width;
	unsigned int threads__col_width;
	unsigned int cpus__col_width;
	static unsigned int parent_symbol__col_width;
	char * field_sep;

	LIST_HEAD(hist_entry__sort_list);

	static int hist_entry__thread_snprintf(struct hist_entry self, char bf,
	size_t size, unsigned int width);
	static int hist_entry__comm_snprintf(struct hist_entry self, char bf,
	size_t size, unsigned int width);
	static int hist_entry__dso_snprintf(struct hist_entry self, char bf,
	size_t size, unsigned int width);
	static int hist_entry__sym_snprintf(struct hist_entry self, char bf,
	size_t size, unsigned int width);
	static int hist_entry__parent_snprintf(struct hist_entry self, char bf,
	size_t size, unsigned int width);
	static int hist_entry__cpu_snprintf(struct hist_entry self, char bf,
	size_t size, unsigned int width);

	struct sort_entry sort_thread = {
	.se_header = "Command: Pid",
	.se_cmp = sort__thread_cmp,
	.se_snprintf = hist_entry__thread_snprintf,
	.se_width = &threads__col_width,
	};

	struct sort_entry sort_comm = {
	.se_header = "Command",
	.se_cmp = sort__comm_cmp,
	.se_collapse = sort__comm_collapse,
	.se_snprintf = hist_entry__comm_snprintf,
	.se_width = &comms__col_width,
	};

	struct sort_entry sort_dso = {
	.se_header = "Shared Object",
	.se_cmp = sort__dso_cmp,
	.se_snprintf = hist_entry__dso_snprintf,
	.se_width = &dsos__col_width,
	};

	struct sort_entry sort_sym = {
	.se_header = "Symbol",
	.se_cmp = sort__sym_cmp,
	.se_snprintf = hist_entry__sym_snprintf,
	};

	struct sort_entry sort_parent = {
	.se_header = "Parent symbol",
	.se_cmp = sort__parent_cmp,
	.se_snprintf = hist_entry__parent_snprintf,
	.se_width = &parent_symbol__col_width,
	};

	struct sort_entry sort_cpu = {
	.se_header = "CPU",
	.se_cmp = sort__cpu_cmp,
	.se_snprintf = hist_entry__cpu_snprintf,
	.se_width = &cpus__col_width,
	};

	struct sort_dimension {
	const char *name;
	struct sort_entry *entry;
	int taken;
	};

	static struct sort_dimension sort_dimensions[] = {
	{ .name = "pid", .entry = &sort_thread, },
	{ .name = "comm", .entry = &sort_comm, },
	{ .name = "dso", .entry = &sort_dso, },
	{ .name = "symbol", .entry = &sort_sym, },
	{ .name = "parent", .entry = &sort_parent, },
	{ .name = "cpu", .entry = &sort_cpu, },
	};

	int64_t cmp_null(void l, void r)
	{
	if (!l && !r)
	return 0;
	else if (!l)
	return -1;
	else
	return 1;
	}

	/* --sort pid */

	int64_t
	sort__thread_cmp(struct hist_entry left, struct hist_entry right)
	{
	return right->thread->pid - left->thread->pid;
	}

	static int repsep_snprintf(char bf, size_t size, const char fmt, ...)
	{
	int n;
	va_list ap;

	va_start(ap, fmt);
	n = vsnprintf(bf, size, fmt, ap);
	if (field_sep && n > 0) {
	char *sep = bf;

	while (1) {
	sep = strchr(sep, *field_sep);
	if (sep == NULL)
	break;
	*sep = '.';
	}
	}
	va_end(ap);
	return n;
	}

	static int hist_entry__thread_snprintf(struct hist_entry self, char bf,
	size_t size, unsigned int width)
	{
	return repsep_snprintf(bf, size, "%*s:%5d", width,
	self->thread->comm ?: "", self->thread->pid);
	}

	static int hist_entry__comm_snprintf(struct hist_entry self, char bf,
	size_t size, unsigned int width)
	{
	return repsep_snprintf(bf, size, "%*s", width, self->thread->comm);
	}

	/* --sort dso */

	int64_t
	sort__dso_cmp(struct hist_entry left, struct hist_entry right)
	{
	struct dso *dso_l = left->ms.map ? left->ms.map->dso : NULL;
	struct dso *dso_r = right->ms.map ? right->ms.map->dso : NULL;
	const char dso_name_l, dso_name_r;

	if (!dso_l \|\| !dso_r)
	return cmp_null(dso_l, dso_r);

	if (verbose) {
	dso_name_l = dso_l->long_name;
	dso_name_r = dso_r->long_name;
	} else {
	dso_name_l = dso_l->short_name;
	dso_name_r = dso_r->short_name;
	}

	return strcmp(dso_name_l, dso_name_r);
	}

	static int hist_entry__dso_snprintf(struct hist_entry self, char bf,
	size_t size, unsigned int width)
	{
	if (self->ms.map && self->ms.map->dso) {
	const char *dso_name = !verbose ? self->ms.map->dso->short_name :
	self->ms.map->dso->long_name;
	return repsep_snprintf(bf, size, "%-*s", width, dso_name);
	}

	return repsep_snprintf(bf, size, "%*Lx", width, self->ip);
	}

	/* --sort symbol */

	int64_t
	sort__sym_cmp(struct hist_entry left, struct hist_entry right)
	{
	u64 ip_l, ip_r;

	if (left->ms.sym == right->ms.sym)
	return 0;

	ip_l = left->ms.sym ? left->ms.sym->start : left->ip;
	ip_r = right->ms.sym ? right->ms.sym->start : right->ip;

	return (int64_t)(ip_r - ip_l);
	}

	static int hist_entry__sym_snprintf(struct hist_entry self, char bf,
	size_t size, unsigned int width __used)
	{
	size_t ret = 0;

	if (verbose) {
	char o = self->ms.map ? dso__symtab_origin(self->ms.map->dso) : '!';
	ret += repsep_snprintf(bf, size, "%#018llx %c ", self->ip, o);
	}

	ret += repsep_snprintf(bf + ret, size - ret, "[%c] ", self->level);
	if (self->ms.sym)
	ret += repsep_snprintf(bf + ret, size - ret, "%s",
	self->ms.sym->name);
	else
	ret += repsep_snprintf(bf + ret, size - ret, "%#016llx", self->ip);

	return ret;
	}

	/* --sort comm */

	int64_t
	sort__comm_cmp(struct hist_entry left, struct hist_entry right)
	{
	return right->thread->pid - left->thread->pid;
	}

	int64_t
	sort__comm_collapse(struct hist_entry left, struct hist_entry right)
	{
	char *comm_l = left->thread->comm;
	char *comm_r = right->thread->comm;

	if (!comm_l \|\| !comm_r)
	return cmp_null(comm_l, comm_r);

	return strcmp(comm_l, comm_r);
	}

	/* --sort parent */

	int64_t
	sort__parent_cmp(struct hist_entry left, struct hist_entry right)
	{
	struct symbol *sym_l = left->parent;
	struct symbol *sym_r = right->parent;

	if (!sym_l \|\| !sym_r)
	return cmp_null(sym_l, sym_r);

	return strcmp(sym_l->name, sym_r->name);
	}

	static int hist_entry__parent_snprintf(struct hist_entry self, char bf,
	size_t size, unsigned int width)
	{
	return repsep_snprintf(bf, size, "%-*s", width,
	self->parent ? self->parent->name : "[other]");
	}

	/* --sort cpu */

	int64_t
	sort__cpu_cmp(struct hist_entry left, struct hist_entry right)
	{
	return right->cpu - left->cpu;
	}

	static int hist_entry__cpu_snprintf(struct hist_entry self, char bf,
	size_t size, unsigned int width)
	{
	return repsep_snprintf(bf, size, "%-*d", width, self->cpu);
	}

	int sort_dimension__add(const char *tok)
	{
	unsigned int i;

	for (i = 0; i < ARRAY_SIZE(sort_dimensions); i++) {
	struct sort_dimension *sd = &sort_dimensions[i];

	if (sd->taken)
	continue;

	if (strncasecmp(tok, sd->name, strlen(tok)))
	continue;

	if (sd->entry->se_collapse)
	sort__need_collapse = 1;

	if (sd->entry == &sort_parent) {
	int ret = regcomp(&parent_regex, parent_pattern, REG_EXTENDED);
	if (ret) {
	char err[BUFSIZ];

	regerror(ret, &parent_regex, err, sizeof(err));
	pr_err("Invalid regex: %s\n%s", parent_pattern, err);
	return -EINVAL;
	}
	sort__has_parent = 1;
	}

	if (list_empty(&hist_entry__sort_list)) {
	if (!strcmp(sd->name, "pid"))
	sort__first_dimension = SORT_PID;
	else if (!strcmp(sd->name, "comm"))
	sort__first_dimension = SORT_COMM;
	else if (!strcmp(sd->name, "dso"))
	sort__first_dimension = SORT_DSO;
	else if (!strcmp(sd->name, "symbol"))
	sort__first_dimension = SORT_SYM;
	else if (!strcmp(sd->name, "parent"))
	sort__first_dimension = SORT_PARENT;
	else if (!strcmp(sd->name, "cpu"))
	sort__first_dimension = SORT_CPU;
	}

	list_add_tail(&sd->entry->list, &hist_entry__sort_list);
	sd->taken = 1;

	return 0;
	}

	return -ESRCH;
	}

	void setup_sorting(const char * const usagestr[], const struct option *opts)
	{
	char tmp, tok, *str = strdup(sort_order);

	for (tok = strtok_r(str, ", ", &tmp);
	tok; tok = strtok_r(NULL, ", ", &tmp)) {
	if (sort_dimension__add(tok) < 0) {
	error("Unknown --sort key: `%s'", tok);
	usage_with_options(usagestr, opts);
	}
	}

	free(str);
	}

	void sort_entry__setup_elide(struct sort_entry self, struct strlist list,
	const char list_name, FILE fp)
	{
	if (list && strlist__nr_entries(list) == 1) {
	if (fp != NULL)
	fprintf(fp, "# %s: %s\n", list_name,
	strlist__entry(list, 0)->s);
	self->elide = true;
	}
	}