Merge tag 'perf-core-for-mingo' of...

Merge tag 'perf-core-for-mingo' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/core

Pull perf/core improvements, fixes and code move from Arnaldo Carvalho de Melo:

 * Initialize 'page_size' variable in the python binding, this was sent
   for perf/urgent by mistake, then when merging Ingo removed it, fixing
   the problem for perf/urgent, but when perf/urgent was merged with
   perf/core, where that initialization is needed, made the python
   binding mmap call to fail, fix it by initializing page_size again.

 * Add a browser for 'perf script' and make it available from the report
   and annotate browsers. It does filtering to find the scripts that
   handle events found in the perf.data file used. From Feng Tang

 * Move some functions from symbol.c to more appropriate files, creating
   dso.[ch] in the process, no code changes. From Jiri Olsa

 * Fix mmap error output message for when perf_mmap fails and returns
   !-EPERM, where the default for mmap_pages, INT_MAX, was causing a
   !power of 2 error message, fix from Jiri Olsa.
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>

tools/perf/Makefile

@@ -327,6 +327,7 @@ LIB_H += util/svghelper.h
 LIB_H += util/tool.h
 LIB_H += util/run-command.h
 LIB_H += util/sigchain.h
+LIB_H += util/dso.h
 LIB_H += util/symbol.h
 LIB_H += util/color.h
 LIB_H += util/values.h
@@ -385,6 +386,7 @@ LIB_OBJS += $(OUTPUT)util/top.o
 LIB_OBJS += $(OUTPUT)util/usage.o
 LIB_OBJS += $(OUTPUT)util/wrapper.o
 LIB_OBJS += $(OUTPUT)util/sigchain.o
+LIB_OBJS += $(OUTPUT)util/dso.o
 LIB_OBJS += $(OUTPUT)util/symbol.o
 LIB_OBJS += $(OUTPUT)util/symbol-elf.o
 LIB_OBJS += $(OUTPUT)util/dso-test-data.o
@@ -591,6 +593,7 @@ ifndef NO_NEWT
 		LIB_OBJS += $(OUTPUT)ui/browsers/annotate.o
 		LIB_OBJS += $(OUTPUT)ui/browsers/hists.o
 		LIB_OBJS += $(OUTPUT)ui/browsers/map.o
+		LIB_OBJS += $(OUTPUT)ui/browsers/scripts.o
 		LIB_OBJS += $(OUTPUT)ui/progress.o
 		LIB_OBJS += $(OUTPUT)ui/util.o
 		LIB_OBJS += $(OUTPUT)ui/tui/setup.o
@@ -907,6 +910,9 @@ $(OUTPUT)ui/browsers/hists.o: ui/browsers/hists.c $(OUTPUT)PERF-CFLAGS
 $(OUTPUT)ui/browsers/map.o: ui/browsers/map.c $(OUTPUT)PERF-CFLAGS
 	$(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) -DENABLE_SLFUTURE_CONST $<
 
+$(OUTPUT)ui/browsers/scripts.o: ui/browsers/scripts.c $(OUTPUT)PERF-CFLAGS
+	$(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) -DENABLE_SLFUTURE_CONST $<
+
 $(OUTPUT)util/rbtree.o: ../../lib/rbtree.c $(OUTPUT)PERF-CFLAGS
 	$(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) -Wno-unused-parameter -DETC_PERFCONFIG='"$(ETC_PERFCONFIG_SQ)"' $<
 

tools/perf/builtin-annotate.c

@@ -34,7 +34,6 @@
 
 struct perf_annotate {
 	struct perf_tool tool;
-	char const *input_name;
 	bool	   force, use_tui, use_stdio;
 	bool	   full_paths;
 	bool	   print_line;
@@ -175,7 +174,7 @@ static int __cmd_annotate(struct perf_annotate *ann)
 	struct perf_evsel *pos;
 	u64 total_nr_samples;
 
-	session = perf_session__new(ann->input_name, O_RDONLY,
+	session = perf_session__new(input_name, O_RDONLY,
 				    ann->force, false, &ann->tool);
 	if (session == NULL)
 		return -ENOMEM;
@@ -260,7 +259,7 @@ int cmd_annotate(int argc, const char **argv, const char *prefix __maybe_unused)
 		},
 	};
 	const struct option options[] = {
-	OPT_STRING('i', "input", &annotate.input_name, "file",
+	OPT_STRING('i', "input", &input_name, "file",
 		    "input file name"),
 	OPT_STRING('d', "dsos", &symbol_conf.dso_list_str, "dso[,dso...]",
 		   "only consider symbols in these dsos"),

tools/perf/builtin-buildid-cache.c

@@ -13,6 +13,7 @@
 #include "util/header.h"
 #include "util/parse-options.h"
 #include "util/strlist.h"
+#include "util/build-id.h"
 #include "util/symbol.h"
 
 static int build_id_cache__add_file(const char *filename, const char *debugdir)

tools/perf/builtin-buildid-list.c

@@ -44,8 +44,7 @@ static int filename__fprintf_build_id(const char *name, FILE *fp)
 	return fprintf(fp, "%s\n", sbuild_id);
 }
 
-static int perf_session__list_build_ids(const char *input_name,
-					bool force, bool with_hits)
+static int perf_session__list_build_ids(bool force, bool with_hits)
 {
 	struct perf_session *session;
 
@@ -81,7 +80,6 @@ int cmd_buildid_list(int argc, const char **argv,
 	bool show_kernel = false;
 	bool with_hits = false;
 	bool force = false;
-	const char *input_name = NULL;
 	const struct option options[] = {
 	OPT_BOOLEAN('H', "with-hits", &with_hits, "Show only DSOs with hits"),
 	OPT_STRING('i', "input", &input_name, "file", "input file name"),
@@ -101,5 +99,5 @@ int cmd_buildid_list(int argc, const char **argv,
 	if (show_kernel)
 		return sysfs__fprintf_build_id(stdout);
 
-	return perf_session__list_build_ids(input_name, force, with_hits);
+	return perf_session__list_build_ids(force, with_hits);
 }

tools/perf/builtin-evlist.c

@@ -48,12 +48,12 @@ static int __if_print(bool *first, const char *field, u64 value)
 
 #define if_print(field) __if_print(&first, #field, pos->attr.field)
 
-static int __cmd_evlist(const char *input_name, struct perf_attr_details *details)
+static int __cmd_evlist(const char *file_name, struct perf_attr_details *details)
 {
 	struct perf_session *session;
 	struct perf_evsel *pos;
 
-	session = perf_session__new(input_name, O_RDONLY, 0, false, NULL);
+	session = perf_session__new(file_name, O_RDONLY, 0, false, NULL);
 	if (session == NULL)
 		return -ENOMEM;
 
@@ -111,7 +111,6 @@ static int __cmd_evlist(const char *input_name, struct perf_attr_details *detail
 int cmd_evlist(int argc, const char **argv, const char *prefix __maybe_unused)
 {
 	struct perf_attr_details details = { .verbose = false, };
-	const char *input_name = NULL;
 	const struct option options[] = {
 	OPT_STRING('i', "input", &input_name, "file", "Input file name"),
 	OPT_BOOLEAN('F', "freq", &details.freq, "Show the sample frequency"),

tools/perf/builtin-kmem.c

@@ -477,7 +477,7 @@ static void sort_result(void)
 	__sort_result(&root_caller_stat, &root_caller_sorted, &caller_sort);
 }
 
-static int __cmd_kmem(const char *input_name)
+static int __cmd_kmem(void)
 {
 	int err = -EINVAL;
 	struct perf_session *session;
@@ -743,7 +743,6 @@ static int __cmd_record(int argc, const char **argv)
 int cmd_kmem(int argc, const char **argv, const char *prefix __maybe_unused)
 {
 	const char * const default_sort_order = "frag,hit,bytes";
-	const char *input_name = NULL;
 	const struct option kmem_options[] = {
 	OPT_STRING('i', "input", &input_name, "file", "input file name"),
 	OPT_CALLBACK_NOOPT(0, "caller", NULL, NULL,
@@ -779,7 +778,7 @@ int cmd_kmem(int argc, const char **argv, const char *prefix __maybe_unused)
 		if (list_empty(&alloc_sort))
 			setup_sorting(&alloc_sort, default_sort_order);
 
-		return __cmd_kmem(input_name);
+		return __cmd_kmem();
 	} else
 		usage_with_options(kmem_usage, kmem_options);
 

tools/perf/builtin-lock.c

@@ -335,8 +335,6 @@ static struct lock_stat *lock_stat_findnew(void *addr, const char *name)
 	return NULL;
 }
 
-static const char *input_name;
-
 struct trace_lock_handler {
 	int (*acquire_event)(struct perf_evsel *evsel,
 			     struct perf_sample *sample);

tools/perf/builtin-record.c

@@ -363,7 +363,8 @@ static int perf_record__open(struct perf_record *rec)
 			       "or try again with a smaller value of -m/--mmap_pages.\n"
 			       "(current value: %d)\n", opts->mmap_pages);
 			rc = -errno;
-		} else if (!is_power_of_2(opts->mmap_pages)) {
+		} else if (!is_power_of_2(opts->mmap_pages) &&
+			   (opts->mmap_pages != UINT_MAX)) {
 			pr_err("--mmap_pages/-m value must be a power of two.");
 			rc = -EINVAL;
 		} else {

tools/perf/builtin-report.c

@@ -40,7 +40,6 @@
 struct perf_report {
 	struct perf_tool	tool;
 	struct perf_session	*session;
-	char const		*input_name;
 	bool			force, use_tui, use_gtk, use_stdio;
 	bool			hide_unresolved;
 	bool			dont_use_callchains;
@@ -571,7 +570,7 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
 		.pretty_printing_style	 = "normal",
 	};
 	const struct option options[] = {
-	OPT_STRING('i', "input", &report.input_name, "file",
+	OPT_STRING('i', "input", &input_name, "file",
 		    "input file name"),
 	OPT_INCR('v', "verbose", &verbose,
 		    "be more verbose (show symbol address, etc)"),
@@ -657,13 +656,13 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
 	if (report.inverted_callchain)
 		callchain_param.order = ORDER_CALLER;
 
-	if (!report.input_name || !strlen(report.input_name)) {
+	if (!input_name || !strlen(input_name)) {
 		if (!fstat(STDIN_FILENO, &st) && S_ISFIFO(st.st_mode))
-			report.input_name = "-";
+			input_name = "-";
 		else
-			report.input_name = "perf.data";
+			input_name = "perf.data";
 	}
-	session = perf_session__new(report.input_name, O_RDONLY,
+	session = perf_session__new(input_name, O_RDONLY,
 				    report.force, false, &report.tool);
 	if (session == NULL)
 		return -ENOMEM;
@@ -694,7 +693,7 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
 
 	}
 
-	if (strcmp(report.input_name, "-") != 0)
+	if (strcmp(input_name, "-") != 0)
 		setup_browser(true);
 	else {
 		use_browser = 0;

tools/perf/builtin-sched.c

@@ -120,7 +120,6 @@ struct trace_sched_handler {
 
 struct perf_sched {
 	struct perf_tool tool;
-	const char	 *input_name;
 	const char	 *sort_order;
 	unsigned long	 nr_tasks;
 	struct task_desc *pid_to_task[MAX_PID];
@@ -1460,7 +1459,7 @@ static int perf_sched__read_events(struct perf_sched *sched, bool destroy,
 	};
 	struct perf_session *session;
 
-	session = perf_session__new(sched->input_name, O_RDONLY, 0, false, &sched->tool);
+	session = perf_session__new(input_name, O_RDONLY, 0, false, &sched->tool);
 	if (session == NULL) {
 		pr_debug("No Memory for session\n");
 		return -1;
@@ -1708,7 +1707,7 @@ int cmd_sched(int argc, const char **argv, const char *prefix __maybe_unused)
 	OPT_END()
 	};
 	const struct option sched_options[] = {
-	OPT_STRING('i', "input", &sched.input_name, "file",
+	OPT_STRING('i', "input", &input_name, "file",
 		    "input file name"),
 	OPT_INCR('v', "verbose", &verbose,
 		    "be more verbose (show symbol address, etc)"),

tools/perf/builtin-script.c

@@ -1029,6 +1029,68 @@ static int list_available_scripts(const struct option *opt __maybe_unused,
 	exit(0);
 }
 
+/*
+ * Some scripts specify the required events in their "xxx-record" file,
+ * this function will check if the events in perf.data match those
+ * mentioned in the "xxx-record".
+ *
+ * Fixme: All existing "xxx-record" are all in good formats "-e event ",
+ * which is covered well now. And new parsing code should be added to
+ * cover the future complexing formats like event groups etc.
+ */
+static int check_ev_match(char *dir_name, char *scriptname,
+			struct perf_session *session)
+{
+	char filename[MAXPATHLEN], evname[128];
+	char line[BUFSIZ], *p;
+	struct perf_evsel *pos;
+	int match, len;
+	FILE *fp;
+
+	sprintf(filename, "%s/bin/%s-record", dir_name, scriptname);
+
+	fp = fopen(filename, "r");
+	if (!fp)
+		return -1;
+
+	while (fgets(line, sizeof(line), fp)) {
+		p = ltrim(line);
+		if (*p == '#')
+			continue;
+
+		while (strlen(p)) {
+			p = strstr(p, "-e");
+			if (!p)
+				break;
+
+			p += 2;
+			p = ltrim(p);
+			len = strcspn(p, " \t");
+			if (!len)
+				break;
+
+			snprintf(evname, len + 1, "%s", p);
+
+			match = 0;
+			list_for_each_entry(pos,
+					&session->evlist->entries, node) {
+				if (!strcmp(perf_evsel__name(pos), evname)) {
+					match = 1;
+					break;
+				}
+			}
+
+			if (!match) {
+				fclose(fp);
+				return -1;
+			}
+		}
+	}
+
+	fclose(fp);
+	return 0;
+}
+
 /*
  * Return -1 if none is found, otherwise the actual scripts number.
  *
@@ -1039,17 +1101,23 @@ static int list_available_scripts(const struct option *opt __maybe_unused,
 int find_scripts(char **scripts_array, char **scripts_path_array)
 {
 	struct dirent *script_next, *lang_next, script_dirent, lang_dirent;
-	char scripts_path[MAXPATHLEN];
+	char scripts_path[MAXPATHLEN], lang_path[MAXPATHLEN];
 	DIR *scripts_dir, *lang_dir;
-	char lang_path[MAXPATHLEN];
+	struct perf_session *session;
 	char *temp;
 	int i = 0;
 
+	session = perf_session__new(input_name, O_RDONLY, 0, false, NULL);
+	if (!session)
+		return -1;
+
 	snprintf(scripts_path, MAXPATHLEN, "%s/scripts", perf_exec_path());
 
 	scripts_dir = opendir(scripts_path);
-	if (!scripts_dir)
+	if (!scripts_dir) {
+		perf_session__delete(session);
 		return -1;
+	}
 
 	for_each_lang(scripts_path, scripts_dir, lang_dirent, lang_next) {
 		snprintf(lang_path, MAXPATHLEN, "%s/%s", scripts_path,
@@ -1077,10 +1145,18 @@ int find_scripts(char **scripts_array, char **scripts_path_array)
 			snprintf(scripts_array[i],
 				(temp - script_dirent.d_name) + 1,
 				"%s", script_dirent.d_name);
+
+			if (check_ev_match(lang_path,
+					scripts_array[i], session))
+				continue;
+
 			i++;
 		}
+		closedir(lang_dir);
 	}
 
+	closedir(scripts_dir);
+	perf_session__delete(session);
 	return i;
 }
 
@@ -1175,7 +1251,6 @@ static int have_cmd(int argc, const char **argv)
 int cmd_script(int argc, const char **argv, const char *prefix __maybe_unused)
 {
 	bool show_full_info = false;
-	const char *input_name = NULL;
 	char *rec_script_path = NULL;
 	char *rep_script_path = NULL;
 	struct perf_session *session;

tools/perf/builtin-timechart.c

@@ -965,7 +965,7 @@ static void write_svg_file(const char *filename)
 	svg_close();
 }
 
-static int __cmd_timechart(const char *input_name, const char *output_name)
+static int __cmd_timechart(const char *output_name)
 {
 	struct perf_tool perf_timechart = {
 		.comm		 = process_comm_event,
@@ -1061,7 +1061,6 @@ parse_process(const struct option *opt __maybe_unused, const char *arg,
 int cmd_timechart(int argc, const char **argv,
 		  const char *prefix __maybe_unused)
 {
-	const char *input_name;
 	const char *output_name = "output.svg";
 	const struct option options[] = {
 	OPT_STRING('i', "input", &input_name, "file", "input file name"),
@@ -1092,5 +1091,5 @@ int cmd_timechart(int argc, const char **argv,
 
 	setup_pager();
 
-	return __cmd_timechart(input_name, output_name);
+	return __cmd_timechart(output_name);
 }

tools/perf/perf.c

@@ -24,6 +24,7 @@ const char perf_more_info_string[] =
 
 int use_browser = -1;
 static int use_pager = -1;
+const char *input_name;
 
 struct cmd_struct {
 	const char *cmd;

tools/perf/perf.h

@@ -208,6 +208,7 @@ struct branch_stack {
 	struct branch_entry	entries[0];
 };
 
+extern const char *input_name;
 extern bool perf_host, perf_guest;
 extern const char perf_version_string[];
 

tools/perf/ui/browsers/annotate.c

@@ -676,8 +676,14 @@ static int annotate_browser__run(struct annotate_browser *browser, int evidx,
 		"o             Toggle disassembler output/simplified view\n"
 		"s             Toggle source code view\n"
 		"/             Search string\n"
+		"r             Run available scripts\n"
 		"?             Search previous string\n");
 			continue;
+		case 'r':
+			{
+				script_browse(NULL);
+				continue;
+			}
 		case 'H':
 			nd = browser->curr_hot;
 			break;

tools/perf/ui/browsers/hists.c

@@ -1141,6 +1141,7 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
 	int nr_options = 0;
 	int key = -1;
 	char buf[64];
+	char script_opt[64];
 
 	if (browser == NULL)
 		return -1;
@@ -1159,6 +1160,7 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
 		int choice = 0,
 		    annotate = -2, zoom_dso = -2, zoom_thread = -2,
 		    annotate_f = -2, annotate_t = -2, browse_map = -2;
+		int scripts_comm = -2, scripts_symbol = -2, scripts_all = -2;
 
 		nr_options = 0;
 
@@ -1211,6 +1213,8 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
 				hist_browser__reset(browser);
 			}
 			continue;
+		case 'r':
+			goto do_scripts;
 		case K_F1:
 		case 'h':
 		case '?':
@@ -1229,6 +1233,7 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
 					"E             Expand all callchains\n"
 					"d             Zoom into current DSO\n"
 					"t             Zoom into current Thread\n"
+					"r             Run available scripts\n"
 					"P             Print histograms to perf.hist.N\n"
 					"V             Verbose (DSO names in callchains, etc)\n"
 					"/             Filter symbol by name");
@@ -1317,6 +1322,25 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
 		    browser->selection->map != NULL &&
 		    asprintf(&options[nr_options], "Browse map details") > 0)
 			browse_map = nr_options++;
+
+		/* perf script support */
+		if (browser->he_selection) {
+			struct symbol *sym;
+
+			if (asprintf(&options[nr_options], "Run scripts for samples of thread [%s]",
+				browser->he_selection->thread->comm) > 0)
+				scripts_comm = nr_options++;
+
+			sym = browser->he_selection->ms.sym;
+			if (sym && sym->namelen &&
+				asprintf(&options[nr_options], "Run scripts for samples of symbol [%s]",
+						sym->name) > 0)
+				scripts_symbol = nr_options++;
+		}
+
+		if (asprintf(&options[nr_options], "Run scripts for all samples") > 0)
+			scripts_all = nr_options++;
+
 add_exit_option:
 		options[nr_options++] = (char *)"Exit";
 retry_popup_menu:
@@ -1411,6 +1435,20 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
 			hists__filter_by_thread(hists);
 			hist_browser__reset(browser);
 		}
+		/* perf scripts support */
+		else if (choice == scripts_all || choice == scripts_comm ||
+				choice == scripts_symbol) {
+do_scripts:
+			memset(script_opt, 0, 64);
+
+			if (choice == scripts_comm)
+				sprintf(script_opt, " -c %s ", browser->he_selection->thread->comm);
+
+			if (choice == scripts_symbol)
+				sprintf(script_opt, " -S %s ", browser->he_selection->ms.sym->name);
+
+			script_browse(script_opt);
+		}
 	}
 out_free_stack:
 	pstack__delete(fstack);

tools/perf/ui/browsers/scripts.c

+#include <elf.h>
+#include <newt.h>
+#include <inttypes.h>
+#include <sys/ttydefaults.h>
+#include <string.h>
+#include "../../util/sort.h"
+#include "../../util/util.h"
+#include "../../util/hist.h"
+#include "../../util/debug.h"
+#include "../../util/symbol.h"
+#include "../browser.h"
+#include "../helpline.h"
+#include "../libslang.h"
+
+/* 2048 lines should be enough for a script output */
+#define MAX_LINES		2048
+
+/* 160 bytes for one output line */
+#define AVERAGE_LINE_LEN	160
+
+struct script_line {
+	struct list_head node;
+	char line[AVERAGE_LINE_LEN];
+};
+
+struct perf_script_browser {
+	struct ui_browser b;
+	struct list_head entries;
+	const char *script_name;
+	int nr_lines;
+};
+
+#define SCRIPT_NAMELEN	128
+#define SCRIPT_MAX_NO	64
+/*
+ * Usually the full path for a script is:
+ *	/home/username/libexec/perf-core/scripts/python/xxx.py
+ *	/home/username/libexec/perf-core/scripts/perl/xxx.pl
+ * So 256 should be long enough to contain the full path.
+ */
+#define SCRIPT_FULLPATH_LEN	256
+
+/*
+ * When success, will copy the full path of the selected script
+ * into  the buffer pointed by script_name, and return 0.
+ * Return -1 on failure.
+ */
+static int list_scripts(char *script_name)
+{
+	char *buf, *names[SCRIPT_MAX_NO], *paths[SCRIPT_MAX_NO];
+	int i, num, choice, ret = -1;
+
+	/* Preset the script name to SCRIPT_NAMELEN */
+	buf = malloc(SCRIPT_MAX_NO * (SCRIPT_NAMELEN + SCRIPT_FULLPATH_LEN));
+	if (!buf)
+		return ret;
+
+	for (i = 0; i < SCRIPT_MAX_NO; i++) {
+		names[i] = buf + i * (SCRIPT_NAMELEN + SCRIPT_FULLPATH_LEN);
+		paths[i] = names[i] + SCRIPT_NAMELEN;
+	}
+
+	num = find_scripts(names, paths);
+	if (num > 0) {
+		choice = ui__popup_menu(num, names);
+		if (choice < num && choice >= 0) {
+			strcpy(script_name, paths[choice]);
+			ret = 0;
+		}
+	}
+
+	free(buf);
+	return ret;
+}
+
+static void script_browser__write(struct ui_browser *browser,
+				   void *entry, int row)
+{
+	struct script_line *sline = list_entry(entry, struct script_line, node);
+	bool current_entry = ui_browser__is_current_entry(browser, row);
+
+	ui_browser__set_color(browser, current_entry ? HE_COLORSET_SELECTED :
+						       HE_COLORSET_NORMAL);
+
+	slsmg_write_nstring(sline->line, browser->width);
+}
+
+static int script_browser__run(struct perf_script_browser *self)
+{
+	int key;
+
+	if (ui_browser__show(&self->b, self->script_name,
+			     "Press <- or ESC to exit") < 0)
+		return -1;
+
+	while (1) {
+		key = ui_browser__run(&self->b, 0);
+
+		/* We can add some special key handling here if needed */
+		break;
+	}
+
+	ui_browser__hide(&self->b);
+	return key;
+}
+
+
+int script_browse(const char *script_opt)
+{
+	char cmd[SCRIPT_FULLPATH_LEN*2], script_name[SCRIPT_FULLPATH_LEN];
+	char *line = NULL;
+	size_t len = 0;
+	ssize_t retlen;
+	int ret = -1, nr_entries = 0;
+	FILE *fp;
+	void *buf;
+	struct script_line *sline;
+
+	struct perf_script_browser script = {
+		.b = {
+			.refresh    = ui_browser__list_head_refresh,
+			.seek	    = ui_browser__list_head_seek,
+			.write	    = script_browser__write,
+		},
+		.script_name = script_name,
+	};
+
+	INIT_LIST_HEAD(&script.entries);
+
+	/* Save each line of the output in one struct script_line object. */
+	buf = zalloc((sizeof(*sline)) * MAX_LINES);
+	if (!buf)
+		return -1;
+	sline = buf;
+
+	memset(script_name, 0, SCRIPT_FULLPATH_LEN);
+	if (list_scripts(script_name))
+		goto exit;
+
+	sprintf(cmd, "perf script -s %s ", script_name);
+
+	if (script_opt)
+		strcat(cmd, script_opt);
+
+	if (input_name) {
+		strcat(cmd, " -i ");
+		strcat(cmd, input_name);
+	}
+
+	strcat(cmd, " 2>&1");
+
+	fp = popen(cmd, "r");
+	if (!fp)
+		goto exit;
+
+	while ((retlen = getline(&line, &len, fp)) != -1) {
+		strncpy(sline->line, line, AVERAGE_LINE_LEN);
+
+		/* If one output line is very large, just cut it short */
+		if (retlen >= AVERAGE_LINE_LEN) {
+			sline->line[AVERAGE_LINE_LEN - 1] = '\0';
+			sline->line[AVERAGE_LINE_LEN - 2] = '\n';
+		}
+		list_add_tail(&sline->node, &script.entries);
+
+		if (script.b.width < retlen)
+			script.b.width = retlen;
+
+		if (nr_entries++ >= MAX_LINES - 1)
+			break;
+		sline++;
+	}
+
+	if (script.b.width > AVERAGE_LINE_LEN)
+		script.b.width = AVERAGE_LINE_LEN;
+
+	if (line)
+		free(line);
+	pclose(fp);
+
+	script.nr_lines = nr_entries;
+	script.b.nr_entries = nr_entries;
+	script.b.entries = &script.entries;
+
+	ret = script_browser__run(&script);
+exit:
+	free(buf);
+	return ret;
+}

tools/perf/util/annotate.c

@@ -15,6 +15,7 @@
 #include "debug.h"
 #include "annotate.h"
 #include <pthread.h>
+#include <linux/bitops.h>
 
 const char 	*disassembler_style;
 const char	*objdump_path;

tools/perf/util/build-id.c

@@ -70,6 +70,21 @@ struct perf_tool build_id__mark_dso_hit_ops = {
 	.build_id	 = perf_event__process_build_id,
 };
 
+int build_id__sprintf(const u8 *build_id, int len, char *bf)
+{
+	char *bid = bf;
+	const u8 *raw = build_id;
+	int i;
+
+	for (i = 0; i < len; ++i) {
+		sprintf(bid, "%02x", *raw);
+		++raw;
+		bid += 2;
+	}
+
+	return raw - build_id;
+}
+
 char *dso__build_id_filename(struct dso *self, char *bf, size_t size)
 {
 	char build_id_hex[BUILD_ID_SIZE * 2 + 1];

tools/perf/util/build-id.h

 #ifndef PERF_BUILD_ID_H_
 #define PERF_BUILD_ID_H_ 1
 
-#include "session.h"
+#define BUILD_ID_SIZE 20
+
+#include "tool.h"
+#include "types.h"
 
 extern struct perf_tool build_id__mark_dso_hit_ops;
+struct dso;
 
+int build_id__sprintf(const u8 *build_id, int len, char *bf);
 char *dso__build_id_filename(struct dso *self, char *bf, size_t size);
 
 int build_id__mark_dso_hit(struct perf_tool *tool, union perf_event *event,

tools/perf/util/dso.h

+#ifndef __PERF_DSO
+#define __PERF_DSO
+
+#include <linux/types.h>
+#include <linux/rbtree.h>
+#include "types.h"
+#include "map.h"
+
+enum dso_binary_type {
+	DSO_BINARY_TYPE__KALLSYMS = 0,
+	DSO_BINARY_TYPE__GUEST_KALLSYMS,
+	DSO_BINARY_TYPE__VMLINUX,
+	DSO_BINARY_TYPE__GUEST_VMLINUX,
+	DSO_BINARY_TYPE__JAVA_JIT,
+	DSO_BINARY_TYPE__DEBUGLINK,
+	DSO_BINARY_TYPE__BUILD_ID_CACHE,
+	DSO_BINARY_TYPE__FEDORA_DEBUGINFO,
+	DSO_BINARY_TYPE__UBUNTU_DEBUGINFO,
+	DSO_BINARY_TYPE__BUILDID_DEBUGINFO,
+	DSO_BINARY_TYPE__SYSTEM_PATH_DSO,
+	DSO_BINARY_TYPE__GUEST_KMODULE,
+	DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE,
+	DSO_BINARY_TYPE__NOT_FOUND,
+};
+
+enum dso_kernel_type {
+	DSO_TYPE_USER = 0,
+	DSO_TYPE_KERNEL,
+	DSO_TYPE_GUEST_KERNEL
+};
+
+enum dso_swap_type {
+	DSO_SWAP__UNSET,
+	DSO_SWAP__NO,
+	DSO_SWAP__YES,
+};
+
+#define DSO__SWAP(dso, type, val)			\
+({							\
+	type ____r = val;				\
+	BUG_ON(dso->needs_swap == DSO_SWAP__UNSET);	\
+	if (dso->needs_swap == DSO_SWAP__YES) {		\
+		switch (sizeof(____r)) {		\
+		case 2:					\
+			____r = bswap_16(val);		\
+			break;				\
+		case 4:					\
+			____r = bswap_32(val);		\
+			break;				\
+		case 8:					\
+			____r = bswap_64(val);		\
+			break;				\
+		default:				\
+			BUG_ON(1);			\
+		}					\
+	}						\
+	____r;						\
+})
+
+#define DSO__DATA_CACHE_SIZE 4096
+#define DSO__DATA_CACHE_MASK ~(DSO__DATA_CACHE_SIZE - 1)
+
+struct dso_cache {
+	struct rb_node	rb_node;
+	u64 offset;
+	u64 size;
+	char data[0];
+};
+
+struct dso {
+	struct list_head node;
+	struct rb_root	 symbols[MAP__NR_TYPES];
+	struct rb_root	 symbol_names[MAP__NR_TYPES];
+	struct rb_root	 cache;
+	enum dso_kernel_type	kernel;
+	enum dso_swap_type	needs_swap;
+	enum dso_binary_type	symtab_type;
+	enum dso_binary_type	data_type;
+	u8		 adjust_symbols:1;
+	u8		 has_build_id:1;
+	u8		 hit:1;
+	u8		 annotate_warned:1;
+	u8		 sname_alloc:1;
+	u8		 lname_alloc:1;
+	u8		 sorted_by_name;
+	u8		 loaded;
+	u8		 build_id[BUILD_ID_SIZE];
+	const char	 *short_name;
+	char		 *long_name;
+	u16		 long_name_len;
+	u16		 short_name_len;
+	char		 name[0];
+};
+
+static inline void dso__set_loaded(struct dso *dso, enum map_type type)
+{
+	dso->loaded |= (1 << type);
+}
+
+struct dso *dso__new(const char *name);
+void dso__delete(struct dso *dso);
+
+void dso__set_short_name(struct dso *dso, const char *name);
+void dso__set_long_name(struct dso *dso, char *name);
+
+int dso__name_len(const struct dso *dso);
+
+bool dso__loaded(const struct dso *dso, enum map_type type);
+
+bool dso__sorted_by_name(const struct dso *dso, enum map_type type);
+void dso__set_sorted_by_name(struct dso *dso, enum map_type type);
+void dso__sort_by_name(struct dso *dso, enum map_type type);
+
+void dso__set_build_id(struct dso *dso, void *build_id);
+bool dso__build_id_equal(const struct dso *dso, u8 *build_id);
+void dso__read_running_kernel_build_id(struct dso *dso,
+				       struct machine *machine);
+int dso__kernel_module_get_build_id(struct dso *dso, const char *root_dir);
+
+char dso__symtab_origin(const struct dso *dso);
+int dso__binary_type_file(struct dso *dso, enum dso_binary_type type,
+			  char *root_dir, char *file, size_t size);
+
+int dso__data_fd(struct dso *dso, struct machine *machine);
+ssize_t dso__data_read_offset(struct dso *dso, struct machine *machine,
+			      u64 offset, u8 *data, ssize_t size);
+ssize_t dso__data_read_addr(struct dso *dso, struct map *map,
+			    struct machine *machine, u64 addr,
+			    u8 *data, ssize_t size);
+
+struct map *dso__new_map(const char *name);
+struct dso *dso__kernel_findnew(struct machine *machine, const char *name,
+				const char *short_name, int dso_type);
+
+void dsos__add(struct list_head *head, struct dso *dso);
+struct dso *dsos__find(struct list_head *head, const char *name);
+struct dso *__dsos__findnew(struct list_head *head, const char *name);
+bool __dsos__read_build_ids(struct list_head *head, bool with_hits);
+
+size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp,
+			       bool with_hits);
+size_t __dsos__fprintf(struct list_head *head, FILE *fp);
+
+size_t dso__fprintf_buildid(struct dso *dso, FILE *fp);
+size_t dso__fprintf_symbols_by_name(struct dso *dso,
+				    enum map_type type, FILE *fp);
+size_t dso__fprintf(struct dso *dso, enum map_type type, FILE *fp);
+#endif /* __PERF_DSO */

tools/perf/util/event.h

@@ -6,6 +6,7 @@
 
 #include "../perf.h"
 #include "map.h"
+#include "build-id.h"
 
 /*
  * PERF_SAMPLE_IP | PERF_SAMPLE_TID | *
@@ -96,8 +97,6 @@ struct perf_sample {
 	struct stack_dump user_stack;
 };
 
-#define BUILD_ID_SIZE 20
-
 struct build_id_event {
 	struct perf_event_header header;
 	pid_t			 pid;

tools/perf/util/header.c

@@ -23,6 +23,7 @@
 #include "pmu.h"
 #include "vdso.h"
 #include "strbuf.h"
+#include "build-id.h"
 
 static bool no_buildid_cache = false;
 
@@ -2340,6 +2341,16 @@ static int try_all_pipe_abis(uint64_t hdr_sz, struct perf_header *ph)
 	return -1;
 }
 
+bool is_perf_magic(u64 magic)
+{
+	if (!memcmp(&magic, __perf_magic1, sizeof(magic))
+		|| magic == __perf_magic2
+		|| magic == __perf_magic2_sw)
+		return true;
+
+	return false;
+}
+
 static int check_magic_endian(u64 magic, uint64_t hdr_sz,
 			      bool is_pipe, struct perf_header *ph)
 {

tools/perf/util/header.h

@@ -154,6 +154,7 @@ int perf_event__synthesize_build_id(struct perf_tool *tool,
 int perf_event__process_build_id(struct perf_tool *tool,
 				 union perf_event *event,
 				 struct perf_session *session);
+bool is_perf_magic(u64 magic);
 
 /*
  * arch specific callback

tools/perf/util/hist.h

@@ -165,6 +165,7 @@ int hist_entry__tui_annotate(struct hist_entry *he, int evidx,
 int perf_evlist__tui_browse_hists(struct perf_evlist *evlist, const char *help,
 				  void(*timer)(void *arg), void *arg,
 				  int refresh);
+int script_browse(const char *script_opt);
 #else
 static inline
 int perf_evlist__tui_browse_hists(struct perf_evlist *evlist __maybe_unused,
@@ -186,6 +187,12 @@ static inline int hist_entry__tui_annotate(struct hist_entry *self
 {
 	return 0;
 }
+
+static inline int script_browse(const char *script_opt)
+{
+	return 0;
+}
+
 #define K_LEFT -1
 #define K_RIGHT -2
 #endif

tools/perf/util/map.c

@@ -10,6 +10,7 @@
 #include "thread.h"
 #include "strlist.h"
 #include "vdso.h"
+#include "build-id.h"
 
 const char *map_type__name[MAP__NR_TYPES] = {
 	[MAP__FUNCTION] = "Functions",

tools/perf/util/parse-events.c

@@ -827,8 +827,6 @@ int parse_events(struct perf_evlist *evlist, const char *str,
 	 * Both call perf_evlist__delete in case of error, so we dont
 	 * need to bother.
 	 */
-	fprintf(stderr, "invalid or unsupported event: '%s'\n", str);
-	fprintf(stderr, "Run 'perf list' for a list of valid events\n");
 	return ret;
 }
 
@@ -836,7 +834,13 @@ int parse_events_option(const struct option *opt, const char *str,
 			int unset __maybe_unused)
 {
 	struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
-	return parse_events(evlist, str, unset);
+	int ret = parse_events(evlist, str, unset);
+
+	if (ret) {
+		fprintf(stderr, "invalid or unsupported event: '%s'\n", str);
+		fprintf(stderr, "Run 'perf list' for a list of valid events\n");
+	}
+	return ret;
 }
 
 int parse_filter(const struct option *opt, const char *str,

tools/perf/util/python.c

@@ -1015,6 +1015,8 @@ PyMODINIT_FUNC initperf(void)
 	    pyrf_cpu_map__setup_types() < 0)
 		return;
 
+	page_size = sysconf(_SC_PAGE_SIZE);
+
 	Py_INCREF(&pyrf_evlist__type);
 	PyModule_AddObject(module, "evlist", (PyObject*)&pyrf_evlist__type);
 

tools/perf/util/string.c

@@ -313,6 +313,24 @@ int strtailcmp(const char *s1, const char *s2)
 	return 0;
 }
 
+/**
+ * strxfrchar - Locate and replace character in @s
+ * @s:    The string to be searched/changed.
+ * @from: Source character to be replaced.
+ * @to:   Destination character.
+ *
+ * Return pointer to the changed string.
+ */
+char *strxfrchar(char *s, char from, char to)
+{
+	char *p = s;
+
+	while ((p = strchr(p, from)) != NULL)
+		*p++ = to;
+
+	return s;
+}
+
 /**
  * rtrim - Removes trailing whitespace from @s.
  * @s: The string to be stripped.

tools/perf/util/symbol.h

@@ -11,6 +11,7 @@
 #include <stdio.h>
 #include <byteswap.h>
 #include <libgen.h>
+#include "build-id.h"
 
 #ifdef LIBELF_SUPPORT
 #include <libelf.h>
@@ -18,6 +19,8 @@
 #include <elf.h>
 #endif
 
+#include "dso.h"
+
 #ifdef HAVE_CPLUS_DEMANGLE
 extern char *cplus_demangle(const char *, int);
 
@@ -39,9 +42,6 @@ static inline char *bfd_demangle(void __maybe_unused *v,
 #endif
 #endif
 
-int hex2u64(const char *ptr, u64 *val);
-char *strxfrchar(char *s, char from, char to);
-
 /*
  * libelf 0.8.x and earlier do not support ELF_C_READ_MMAP;
  * for newer versions we can use mmap to reduce memory usage:
@@ -57,8 +57,6 @@ char *strxfrchar(char *s, char from, char to);
 #define DMGL_ANSI        (1 << 1)       /* Include const, volatile, etc */
 #endif
 
-#define BUILD_ID_SIZE 20
-
 /** struct symbol - symtab entry
  *
  * @ignore - resolvable but tools ignore it (e.g. idle routines)
@@ -74,6 +72,7 @@ struct symbol {
 };
 
 void symbol__delete(struct symbol *sym);
+void symbols__delete(struct rb_root *symbols);
 
 static inline size_t symbol__size(const struct symbol *sym)
 {
@@ -164,70 +163,6 @@ struct addr_location {
 	s32	      cpu;
 };
 
-enum dso_binary_type {
-	DSO_BINARY_TYPE__KALLSYMS = 0,
-	DSO_BINARY_TYPE__GUEST_KALLSYMS,
-	DSO_BINARY_TYPE__VMLINUX,
-	DSO_BINARY_TYPE__GUEST_VMLINUX,
-	DSO_BINARY_TYPE__JAVA_JIT,
-	DSO_BINARY_TYPE__DEBUGLINK,
-	DSO_BINARY_TYPE__BUILD_ID_CACHE,
-	DSO_BINARY_TYPE__FEDORA_DEBUGINFO,
-	DSO_BINARY_TYPE__UBUNTU_DEBUGINFO,
-	DSO_BINARY_TYPE__BUILDID_DEBUGINFO,
-	DSO_BINARY_TYPE__SYSTEM_PATH_DSO,
-	DSO_BINARY_TYPE__GUEST_KMODULE,
-	DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE,
-	DSO_BINARY_TYPE__NOT_FOUND,
-};
-
-enum dso_kernel_type {
-	DSO_TYPE_USER = 0,
-	DSO_TYPE_KERNEL,
-	DSO_TYPE_GUEST_KERNEL
-};
-
-enum dso_swap_type {
-	DSO_SWAP__UNSET,
-	DSO_SWAP__NO,
-	DSO_SWAP__YES,
-};
-
-#define DSO__DATA_CACHE_SIZE 4096
-#define DSO__DATA_CACHE_MASK ~(DSO__DATA_CACHE_SIZE - 1)
-
-struct dso_cache {
-	struct rb_node	rb_node;
-	u64 offset;
-	u64 size;
-	char data[0];
-};
-
-struct dso {
-	struct list_head node;
-	struct rb_root	 symbols[MAP__NR_TYPES];
-	struct rb_root	 symbol_names[MAP__NR_TYPES];
-	struct rb_root	 cache;
-	enum dso_kernel_type	kernel;
-	enum dso_swap_type	needs_swap;
-	enum dso_binary_type	symtab_type;
-	enum dso_binary_type	data_type;
-	u8		 adjust_symbols:1;
-	u8		 has_build_id:1;
-	u8		 hit:1;
-	u8		 annotate_warned:1;
-	u8		 sname_alloc:1;
-	u8		 lname_alloc:1;
-	u8		 sorted_by_name;
-	u8		 loaded;
-	u8		 build_id[BUILD_ID_SIZE];
-	const char	 *short_name;
-	char	 	 *long_name;
-	u16		 long_name_len;
-	u16		 short_name_len;
-	char		 name[0];
-};
-
 struct symsrc {
 	char *name;
 	int fd;
@@ -258,47 +193,6 @@ int symsrc__init(struct symsrc *ss, struct dso *dso, const char *name,
 bool symsrc__has_symtab(struct symsrc *ss);
 bool symsrc__possibly_runtime(struct symsrc *ss);
 
-#define DSO__SWAP(dso, type, val)			\
-({							\
-	type ____r = val;				\
-	BUG_ON(dso->needs_swap == DSO_SWAP__UNSET);	\
-	if (dso->needs_swap == DSO_SWAP__YES) {		\
-		switch (sizeof(____r)) {		\
-		case 2:					\
-			____r = bswap_16(val);		\
-			break;				\
-		case 4:					\
-			____r = bswap_32(val);		\
-			break;				\
-		case 8:					\
-			____r = bswap_64(val);		\
-			break;				\
-		default:				\
-			BUG_ON(1);			\
-		}					\
-	}						\
-	____r;						\
-})
-
-struct dso *dso__new(const char *name);
-void dso__delete(struct dso *dso);
-
-int dso__name_len(const struct dso *dso);
-
-bool dso__loaded(const struct dso *dso, enum map_type type);
-bool dso__sorted_by_name(const struct dso *dso, enum map_type type);
-
-static inline void dso__set_loaded(struct dso *dso, enum map_type type)
-{
-	dso->loaded |= (1 << type);
-}
-
-void dso__sort_by_name(struct dso *dso, enum map_type type);
-
-void dsos__add(struct list_head *head, struct dso *dso);
-struct dso *dsos__find(struct list_head *head, const char *name);
-struct dso *__dsos__findnew(struct list_head *head, const char *name);
-
 int dso__load(struct dso *dso, struct map *map, symbol_filter_t filter);
 int dso__load_vmlinux(struct dso *dso, struct map *map,
 		      const char *vmlinux, symbol_filter_t filter);
@@ -311,25 +205,12 @@ int machine__load_kallsyms(struct machine *machine, const char *filename,
 int machine__load_vmlinux_path(struct machine *machine, enum map_type type,
 			       symbol_filter_t filter);
 
-size_t __dsos__fprintf(struct list_head *head, FILE *fp);
-
 size_t machine__fprintf_dsos_buildid(struct machine *machine,
 				     FILE *fp, bool with_hits);
 size_t machines__fprintf_dsos(struct rb_root *machines, FILE *fp);
 size_t machines__fprintf_dsos_buildid(struct rb_root *machines,
 				      FILE *fp, bool with_hits);
-size_t dso__fprintf_buildid(struct dso *dso, FILE *fp);
-size_t dso__fprintf_symbols_by_name(struct dso *dso,
-				    enum map_type type, FILE *fp);
-size_t dso__fprintf(struct dso *dso, enum map_type type, FILE *fp);
-
-char dso__symtab_origin(const struct dso *dso);
-void dso__set_long_name(struct dso *dso, char *name);
-void dso__set_build_id(struct dso *dso, void *build_id);
-bool dso__build_id_equal(const struct dso *dso, u8 *build_id);
-void dso__read_running_kernel_build_id(struct dso *dso,
-				       struct machine *machine);
-struct map *dso__new_map(const char *name);
+
 struct symbol *dso__find_symbol(struct dso *dso, enum map_type type,
 				u64 addr);
 struct symbol *dso__find_symbol_by_name(struct dso *dso, enum map_type type,
@@ -337,8 +218,6 @@ struct symbol *dso__find_symbol_by_name(struct dso *dso, enum map_type type,
 
 int filename__read_build_id(const char *filename, void *bf, size_t size);
 int sysfs__read_build_id(const char *filename, void *bf, size_t size);
-bool __dsos__read_build_ids(struct list_head *head, bool with_hits);
-int build_id__sprintf(const u8 *build_id, int len, char *bf);
 int kallsyms__parse(const char *filename, void *arg,
 		    int (*process_symbol)(void *arg, const char *name,
 					  char type, u64 start));
@@ -360,19 +239,11 @@ struct symbol *symbol__new(u64 start, u64 len, u8 binding, const char *name);
 size_t symbol__fprintf_symname_offs(const struct symbol *sym,
 				    const struct addr_location *al, FILE *fp);
 size_t symbol__fprintf_symname(const struct symbol *sym, FILE *fp);
+size_t symbol__fprintf(struct symbol *sym, FILE *fp);
 bool symbol_type__is_a(char symbol_type, enum map_type map_type);
 
 size_t machine__fprintf_vmlinux_path(struct machine *machine, FILE *fp);
 
-int dso__binary_type_file(struct dso *dso, enum dso_binary_type type,
-			  char *root_dir, char *file, size_t size);
-
-int dso__data_fd(struct dso *dso, struct machine *machine);
-ssize_t dso__data_read_offset(struct dso *dso, struct machine *machine,
-			      u64 offset, u8 *data, ssize_t size);
-ssize_t dso__data_read_addr(struct dso *dso, struct map *map,
-			    struct machine *machine, u64 addr,
-			    u8 *data, ssize_t size);
 int dso__test_data(void);
 int dso__load_sym(struct dso *dso, struct map *map, struct symsrc *syms_ss,
 		  struct symsrc *runtime_ss, symbol_filter_t filter,

tools/perf/util/util.c

@@ -166,6 +166,39 @@ size_t hex_width(u64 v)
 	return n;
 }
 
+static int hex(char ch)
+{
+	if ((ch >= '0') && (ch <= '9'))
+		return ch - '0';
+	if ((ch >= 'a') && (ch <= 'f'))
+		return ch - 'a' + 10;
+	if ((ch >= 'A') && (ch <= 'F'))
+		return ch - 'A' + 10;
+	return -1;
+}
+
+/*
+ * While we find nice hex chars, build a long_val.
+ * Return number of chars processed.
+ */
+int hex2u64(const char *ptr, u64 *long_val)
+{
+	const char *p = ptr;
+	*long_val = 0;
+
+	while (*p) {
+		const int hex_val = hex(*p);
+
+		if (hex_val < 0)
+			break;
+
+		*long_val = (*long_val << 4) | hex_val;
+		p++;
+	}
+
+	return p - ptr;
+}
+
 /* Obtain a backtrace and print it to stdout. */
 #ifdef BACKTRACE_SUPPORT
 void dump_stack(void)

tools/perf/util/util.h

@@ -240,6 +240,7 @@ void argv_free(char **argv);
 bool strglobmatch(const char *str, const char *pat);
 bool strlazymatch(const char *str, const char *pat);
 int strtailcmp(const char *s1, const char *s2);
+char *strxfrchar(char *s, char from, char to);
 unsigned long convert_unit(unsigned long value, char *unit);
 int readn(int fd, void *buf, size_t size);
 
@@ -262,6 +263,7 @@ bool is_power_of_2(unsigned long n)
 }
 
 size_t hex_width(u64 v);
+int hex2u64(const char *ptr, u64 *val);
 
 char *rtrim(char *s);