12 files changed, 286 insertions, 38 deletions

diff --git a/tools/perf/util/Build b/tools/perf/util/Build
index 1dc67efad634..bdad82a9812d 100644
--- a/tools/perf/util/Build
+++ b/tools/perf/util/Build
@@ -87,6 +87,7 @@ libperf-y += help-unknown-cmd.o
 libperf-y += mem-events.o
 libperf-y += vsprintf.o
 libperf-y += drv_configs.o
+libperf-y += time-utils.o
 
 libperf-$(CONFIG_LIBBPF) += bpf-loader.o
 libperf-$(CONFIG_BPF_PROLOGUE) += bpf-prologue.o
@@ -123,6 +124,8 @@ libperf-$(CONFIG_LIBELF) += genelf.o
 libperf-$(CONFIG_DWARF) += genelf_debug.o
 endif
 
+libperf-y += perf-hooks.o
+
 CFLAGS_config.o   += -DETC_PERFCONFIG="BUILD_STR($(ETC_PERFCONFIG_SQ))"
 # avoid compiler warnings in 32-bit mode
 CFLAGS_genelf_debug.o  += -Wno-packed
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index 3e34ee0fde28..4012b1de2813 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -105,6 +105,7 @@ static int arch__associate_ins_ops(struct arch* arch, const char *name, struct i
 }
 
 #include "arch/arm/annotate/instructions.c"
+#include "arch/arm64/annotate/instructions.c"
 #include "arch/x86/annotate/instructions.c"
 #include "arch/powerpc/annotate/instructions.c"
 
@@ -114,6 +115,10 @@ static struct arch architectures[] = {
 		.init = arm__annotate_init,
 	},
 	{
+		.name = "arm64",
+		.init = arm64__annotate_init,
+	},
+	{
 		.name = "x86",
 		.instructions = x86__instructions,
 		.nr_instructions = ARRAY_SIZE(x86__instructions),
@@ -408,7 +413,7 @@ static int dec__parse(struct arch *arch __maybe_unused, struct ins_operands *ops
 	if (ops->target.raw == NULL)
 		return -1;
 
-	comment = strchr(s, '#');
+	comment = strchr(s, arch->objdump.comment_char);
 	if (comment == NULL)
 		return 0;
 
diff --git a/tools/perf/util/evsel_fprintf.c b/tools/perf/util/evsel_fprintf.c
index 5a6f52284452..6b2925542c0a 100644
--- a/tools/perf/util/evsel_fprintf.c
+++ b/tools/perf/util/evsel_fprintf.c
@@ -166,6 +166,14 @@ int sample__fprintf_callchain(struct perf_sample *sample, int left_alignment,
 			if (!print_oneline)
 				printed += fprintf(fp, "\n");
 
+			if (symbol_conf.bt_stop_list &&
+			    node->sym &&
+			    node->sym->name &&
+			    strlist__has_entry(symbol_conf.bt_stop_list,
+					       node->sym->name)) {
+				break;
+			}
+
 			first = false;
 next:
 			callchain_cursor_advance(cursor);
diff --git a/tools/perf/util/perf-hooks-list.h b/tools/perf/util/perf-hooks-list.h
new file mode 100644
index 000000000000..2867c07ee84e
--- /dev/null
+++ b/tools/perf/util/perf-hooks-list.h
@@ -0,0 +1,3 @@
+PERF_HOOK(record_start)
+PERF_HOOK(record_end)
+PERF_HOOK(test)
diff --git a/tools/perf/util/perf-hooks.c b/tools/perf/util/perf-hooks.c
new file mode 100644
index 000000000000..4ce88e37dd63
--- /dev/null
+++ b/tools/perf/util/perf-hooks.c
@@ -0,0 +1,84 @@
+/*
+ * perf_hooks.c
+ *
+ * Copyright (C) 2016 Wang Nan <wangnan0@huawei.com>
+ * Copyright (C) 2016 Huawei Inc.
+ */
+
+#include <errno.h>
+#include <stdlib.h>
+#include <setjmp.h>
+#include <linux/err.h>
+#include "util/util.h"
+#include "util/debug.h"
+#include "util/perf-hooks.h"
+
+static sigjmp_buf jmpbuf;
+static const struct perf_hook_desc *current_perf_hook;
+
+void perf_hooks__invoke(const struct perf_hook_desc *desc)
+{
+	if (!(desc && desc->p_hook_func && *desc->p_hook_func))
+		return;
+
+	if (sigsetjmp(jmpbuf, 1)) {
+		pr_warning("Fatal error (SEGFAULT) in perf hook '%s'\n",
+			   desc->hook_name);
+		*(current_perf_hook->p_hook_func) = NULL;
+	} else {
+		current_perf_hook = desc;
+		(**desc->p_hook_func)();
+	}
+	current_perf_hook = NULL;
+}
+
+void perf_hooks__recover(void)
+{
+	if (current_perf_hook)
+		siglongjmp(jmpbuf, 1);
+}
+
+#define PERF_HOOK(name)					\
+perf_hook_func_t __perf_hook_func_##name = NULL;	\
+struct perf_hook_desc __perf_hook_desc_##name =		\
+	{.hook_name = #name, .p_hook_func = &__perf_hook_func_##name};
+#include "perf-hooks-list.h"
+#undef PERF_HOOK
+
+#define PERF_HOOK(name)		\
+	&__perf_hook_desc_##name,
+
+static struct perf_hook_desc *perf_hooks[] = {
+#include "perf-hooks-list.h"
+};
+#undef PERF_HOOK
+
+int perf_hooks__set_hook(const char *hook_name,
+			 perf_hook_func_t hook_func)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(perf_hooks); i++) {
+		if (strcmp(hook_name, perf_hooks[i]->hook_name) != 0)
+			continue;
+
+		if (*(perf_hooks[i]->p_hook_func))
+			pr_warning("Overwrite existing hook: %s\n", hook_name);
+		*(perf_hooks[i]->p_hook_func) = hook_func;
+		return 0;
+	}
+	return -ENOENT;
+}
+
+perf_hook_func_t perf_hooks__get_hook(const char *hook_name)
+{
+	unsigned int i;
+
+	for (i = 0; i < ARRAY_SIZE(perf_hooks); i++) {
+		if (strcmp(hook_name, perf_hooks[i]->hook_name) != 0)
+			continue;
+
+		return *(perf_hooks[i]->p_hook_func);
+	}
+	return ERR_PTR(-ENOENT);
+}
diff --git a/tools/perf/util/perf-hooks.h b/tools/perf/util/perf-hooks.h
new file mode 100644
index 000000000000..1d482b26b4b9
--- /dev/null
+++ b/tools/perf/util/perf-hooks.h
@@ -0,0 +1,37 @@
+#ifndef PERF_UTIL_PERF_HOOKS_H
+#define PERF_UTIL_PERF_HOOKS_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef void (*perf_hook_func_t)(void);
+struct perf_hook_desc {
+	const char * const hook_name;
+	perf_hook_func_t * const p_hook_func;
+};
+
+extern void perf_hooks__invoke(const struct perf_hook_desc *);
+extern void perf_hooks__recover(void);
+
+#define PERF_HOOK(name)					\
+extern struct perf_hook_desc __perf_hook_desc_##name;	\
+static inline void perf_hooks__invoke_##name(void)	\
+{ 							\
+	perf_hooks__invoke(&__perf_hook_desc_##name);	\
+}
+
+#include "perf-hooks-list.h"
+#undef PERF_HOOK
+
+extern int
+perf_hooks__set_hook(const char *hook_name,
+		     perf_hook_func_t hook_func);
+
+extern perf_hook_func_t
+perf_hooks__get_hook(const char *hook_name);
+
+#ifdef __cplusplus
+}
+#endif
+#endif
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c
index 420ada9de22f..df2482b2ba45 100644
--- a/tools/perf/util/symbol.c
+++ b/tools/perf/util/symbol.c
@@ -2032,6 +2032,10 @@ int symbol__init(struct perf_env *env)
 		       symbol_conf.sym_list_str, "symbol") < 0)
 		goto out_free_tid_list;
 
+	if (setup_list(&symbol_conf.bt_stop_list,
+		       symbol_conf.bt_stop_list_str, "symbol") < 0)
+		goto out_free_sym_list;
+
 	/*
 	 * A path to symbols of "/" is identical to ""
 	 * reset here for simplicity.
@@ -2049,6 +2053,8 @@ int symbol__init(struct perf_env *env)
 	symbol_conf.initialized = true;
 	return 0;
 
+out_free_sym_list:
+	strlist__delete(symbol_conf.sym_list);
 out_free_tid_list:
 	intlist__delete(symbol_conf.tid_list);
 out_free_pid_list:
@@ -2064,6 +2070,7 @@ void symbol__exit(void)
 {
 	if (!symbol_conf.initialized)
 		return;
+	strlist__delete(symbol_conf.bt_stop_list);
 	strlist__delete(symbol_conf.sym_list);
 	strlist__delete(symbol_conf.dso_list);
 	strlist__delete(symbol_conf.comm_list);
@@ -2071,6 +2078,7 @@ void symbol__exit(void)
 	intlist__delete(symbol_conf.pid_list);
 	vmlinux_path__exit();
 	symbol_conf.sym_list = symbol_conf.dso_list = symbol_conf.comm_list = NULL;
+	symbol_conf.bt_stop_list = NULL;
 	symbol_conf.initialized = false;
 }
 
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 1bcbefc0c325..6c358b7ed336 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -132,14 +132,16 @@ struct symbol_conf {
 			*pid_list_str,
 			*tid_list_str,
 			*sym_list_str,
-			*col_width_list_str;
+			*col_width_list_str,
+			*bt_stop_list_str;
        struct strlist	*dso_list,
 			*comm_list,
 			*sym_list,
 			*dso_from_list,
 			*dso_to_list,
 			*sym_from_list,
-			*sym_to_list;
+			*sym_to_list,
+			*bt_stop_list;
 	struct intlist	*pid_list,
 			*tid_list;
 	const char	*symfs;
diff --git a/tools/perf/util/time-utils.c b/tools/perf/util/time-utils.c
new file mode 100644
index 000000000000..d1b21c72206d
--- /dev/null
+++ b/tools/perf/util/time-utils.c
@@ -0,0 +1,119 @@
+#include <stdlib.h>
+#include <string.h>
+#include <sys/time.h>
+#include <linux/time64.h>
+#include <time.h>
+#include <errno.h>
+#include <inttypes.h>
+
+#include "perf.h"
+#include "debug.h"
+#include "time-utils.h"
+
+int parse_nsec_time(const char *str, u64 *ptime)
+{
+	u64 time_sec, time_nsec;
+	char *end;
+
+	time_sec = strtoul(str, &end, 10);
+	if (*end != '.' && *end != '\0')
+		return -1;
+
+	if (*end == '.') {
+		int i;
+		char nsec_buf[10];
+
+		if (strlen(++end) > 9)
+			return -1;
+
+		strncpy(nsec_buf, end, 9);
+		nsec_buf[9] = '\0';
+
+		/* make it nsec precision */
+		for (i = strlen(nsec_buf); i < 9; i++)
+			nsec_buf[i] = '0';
+
+		time_nsec = strtoul(nsec_buf, &end, 10);
+		if (*end != '\0')
+			return -1;
+	} else
+		time_nsec = 0;
+
+	*ptime = time_sec * NSEC_PER_SEC + time_nsec;
+	return 0;
+}
+
+static int parse_timestr_sec_nsec(struct perf_time_interval *ptime,
+				  char *start_str, char *end_str)
+{
+	if (start_str && (*start_str != '\0') &&
+	    (parse_nsec_time(start_str, &ptime->start) != 0)) {
+		return -1;
+	}
+
+	if (end_str && (*end_str != '\0') &&
+	    (parse_nsec_time(end_str, &ptime->end) != 0)) {
+		return -1;
+	}
+
+	return 0;
+}
+
+int perf_time__parse_str(struct perf_time_interval *ptime, const char *ostr)
+{
+	char *start_str, *end_str;
+	char *d, *str;
+	int rc = 0;
+
+	if (ostr == NULL || *ostr == '\0')
+		return 0;
+
+	/* copy original string because we need to modify it */
+	str = strdup(ostr);
+	if (str == NULL)
+		return -ENOMEM;
+
+	ptime->start = 0;
+	ptime->end = 0;
+
+	/* str has the format: <start>,<stop>
+	 * variations: <start>,
+	 *             ,<stop>
+	 *             ,
+	 */
+	start_str = str;
+	d = strchr(start_str, ',');
+	if (d) {
+		*d = '\0';
+		++d;
+	}
+	end_str = d;
+
+	rc = parse_timestr_sec_nsec(ptime, start_str, end_str);
+
+	free(str);
+
+	/* make sure end time is after start time if it was given */
+	if (rc == 0 && ptime->end && ptime->end < ptime->start)
+		return -EINVAL;
+
+	pr_debug("start time %" PRIu64 ", ", ptime->start);
+	pr_debug("end time %" PRIu64 "\n", ptime->end);
+
+	return rc;
+}
+
+bool perf_time__skip_sample(struct perf_time_interval *ptime, u64 timestamp)
+{
+	/* if time is not set don't drop sample */
+	if (timestamp == 0)
+		return false;
+
+	/* otherwise compare sample time to time window */
+	if ((ptime->start && timestamp < ptime->start) ||
+	    (ptime->end && timestamp > ptime->end)) {
+		return true;
+	}
+
+	return false;
+}
diff --git a/tools/perf/util/time-utils.h b/tools/perf/util/time-utils.h
new file mode 100644
index 000000000000..c1f197c4af6c
--- /dev/null
+++ b/tools/perf/util/time-utils.h
@@ -0,0 +1,14 @@
+#ifndef _TIME_UTILS_H_
+#define _TIME_UTILS_H_
+
+struct perf_time_interval {
+	u64 start, end;
+};
+
+int parse_nsec_time(const char *str, u64 *ptime);
+
+int perf_time__parse_str(struct perf_time_interval *ptime, const char *ostr);
+
+bool perf_time__skip_sample(struct perf_time_interval *ptime, u64 timestamp);
+
+#endif
diff --git a/tools/perf/util/util.c b/tools/perf/util/util.c
index 67ac765da27a..9ddd98827d12 100644
--- a/tools/perf/util/util.c
+++ b/tools/perf/util/util.c
@@ -400,39 +400,6 @@ void sighandler_dump_stack(int sig)
 	raise(sig);
 }
 
-int parse_nsec_time(const char *str, u64 *ptime)
-{
-	u64 time_sec, time_nsec;
-	char *end;
-
-	time_sec = strtoul(str, &end, 10);
-	if (*end != '.' && *end != '\0')
-		return -1;
-
-	if (*end == '.') {
-		int i;
-		char nsec_buf[10];
-
-		if (strlen(++end) > 9)
-			return -1;
-
-		strncpy(nsec_buf, end, 9);
-		nsec_buf[9] = '\0';
-
-		/* make it nsec precision */
-		for (i = strlen(nsec_buf); i < 9; i++)
-			nsec_buf[i] = '0';
-
-		time_nsec = strtoul(nsec_buf, &end, 10);
-		if (*end != '\0')
-			return -1;
-	} else
-		time_nsec = 0;
-
-	*ptime = time_sec * NSEC_PER_SEC + time_nsec;
-	return 0;
-}
-
 int timestamp__scnprintf_usec(u64 timestamp, char *buf, size_t sz)
 {
 	u64  sec = timestamp / NSEC_PER_SEC;
diff --git a/tools/perf/util/util.h b/tools/perf/util/util.h
index 79662d67891e..1d639e38aa82 100644
--- a/tools/perf/util/util.h
+++ b/tools/perf/util/util.h
@@ -179,8 +179,6 @@ static inline void *zalloc(size_t size)
 #undef tolower
 #undef toupper
 
-int parse_nsec_time(const char *str, u64 *ptime);
-
 extern unsigned char sane_ctype[256];
 #define GIT_SPACE		0x01
 #define GIT_DIGIT		0x02