Merge branch 'perf/core' of git://github.com/acmel/linux into perf/core

tools/perf/Documentation/perf-annotate.txt

@@ -73,8 +73,7 @@ OPTIONS
 	CPUs.
 
 --asm-raw::
-	Show raw instruction encoding of assembly instructions. They
-	are displayed by default, disable with --no-asm-raw.
+	Show raw instruction encoding of assembly instructions.
 
 --source::
 	Interleave source code with assembly code. Enabled by default,

tools/perf/Documentation/perf-report.txt

@@ -137,6 +137,21 @@ OPTIONS
 -M::
 --disassembler-style=:: Set disassembler style for objdump.
 
+--source::
+	Interleave source code with assembly code. Enabled by default,
+	disable with --no-source.
+
+--asm-raw::
+	Show raw instruction encoding of assembly instructions.
+
+--show-total-period:: Show a column with the sum of periods.
+
+-I::
+--show-info::
+	Display extended information about the perf.data file. This adds
+	information which may be very large and thus may clutter the display.
+	It currently includes: cpu and numa topology of the host system.
+
 SEE ALSO
 --------
-linkperf:perf-stat[1]
+linkperf:perf-stat[1], linkperf:perf-annotate[1]

tools/perf/Documentation/perf-script.txt

@@ -188,6 +188,13 @@ OPTIONS
 	CPUs are specified with -: 0-2. Default is to report samples on all
 	CPUs.
 
+-I::
+--show-info::
+	Display extended information about the perf.data file. This adds
+	information which may be very large and thus may clutter the display.
+	It currently includes: cpu and numa topology of the host system.
+	It can only be used with the perf script report mode.
+
 SEE ALSO
 --------
 linkperf:perf-record[1], linkperf:perf-script-perl[1],

tools/perf/Documentation/perf-top.txt

@@ -106,6 +106,51 @@ Default is to monitor all CPUS.
 --zero::
 	Zero history across display updates.
 
+-s::
+--sort::
+	Sort by key(s): pid, comm, dso, symbol, parent
+
+-n::
+--show-nr-samples::
+	Show a column with the number of samples.
+
+--show-total-period::
+	Show a column with the sum of periods.
+
+--dsos::
+	Only consider symbols in these dsos.
+
+--comms::
+	Only consider symbols in these comms.
+
+--symbols::
+	Only consider these symbols.
+
+-M::
+--disassembler-style=:: Set disassembler style for objdump.
+
+--source::
+	Interleave source code with assembly code. Enabled by default,
+	disable with --no-source.
+
+--asm-raw::
+	Show raw instruction encoding of assembly instructions.
+
+-G [type,min,order]::
+--call-graph::
+        Display call chains using type, min percent threshold and order.
+	type can be either:
+	- flat: single column, linear exposure of call chains.
+	- graph: use a graph tree, displaying absolute overhead rates.
+	- fractal: like graph, but displays relative rates. Each branch of
+		 the tree is considered as a new profiled object.
+
+	order can be either:
+	- callee: callee based call graph.
+	- caller: inverted caller based call graph.
+
+	Default: fractal,0.5,callee.
+
 INTERACTIVE PROMPTING KEYS
 --------------------------
 
@@ -130,9 +175,6 @@ INTERACTIVE PROMPTING KEYS
 [S]::
 	Stop annotation, return to full profile display.
 
-[w]::
-	Toggle between weighted sum and individual count[E]r profile.
-
 [z]::
 	Toggle event count zeroing across display updates.
 

tools/perf/Makefile

@@ -466,7 +466,6 @@ else
 		LIB_OBJS += $(OUTPUT)util/ui/browsers/annotate.o
 		LIB_OBJS += $(OUTPUT)util/ui/browsers/hists.o
 		LIB_OBJS += $(OUTPUT)util/ui/browsers/map.o
-		LIB_OBJS += $(OUTPUT)util/ui/browsers/top.o
 		LIB_OBJS += $(OUTPUT)util/ui/helpline.o
 		LIB_OBJS += $(OUTPUT)util/ui/progress.o
 		LIB_OBJS += $(OUTPUT)util/ui/util.o
@@ -729,9 +728,6 @@ $(OUTPUT)util/ui/browser.o: util/ui/browser.c $(OUTPUT)PERF-CFLAGS
 $(OUTPUT)util/ui/browsers/annotate.o: util/ui/browsers/annotate.c $(OUTPUT)PERF-CFLAGS
 	$(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) -DENABLE_SLFUTURE_CONST $<
 
-$(OUTPUT)util/ui/browsers/top.o: util/ui/browsers/top.c $(OUTPUT)PERF-CFLAGS
-	$(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) -DENABLE_SLFUTURE_CONST $<
-
 $(OUTPUT)util/ui/browsers/hists.o: util/ui/browsers/hists.c $(OUTPUT)PERF-CFLAGS
 	$(QUIET_CC)$(CC) -o $@ -c $(ALL_CFLAGS) -DENABLE_SLFUTURE_CONST $<
 

tools/perf/arch/powerpc/Makefile

@@ -2,3 +2,4 @@ ifndef NO_DWARF
 PERF_HAVE_DWARF_REGS := 1
 LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/dwarf-regs.o
 endif
+LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/header.o

tools/perf/arch/powerpc/util/header.c

+#include <sys/types.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "../../util/header.h"
+
+#define __stringify_1(x)        #x
+#define __stringify(x)          __stringify_1(x)
+
+#define mfspr(rn)       ({unsigned long rval; \
+			 asm volatile("mfspr %0," __stringify(rn) \
+				      : "=r" (rval)); rval; })
+
+#define SPRN_PVR        0x11F	/* Processor Version Register */
+#define PVR_VER(pvr)    (((pvr) >>  16) & 0xFFFF) /* Version field */
+#define PVR_REV(pvr)    (((pvr) >>   0) & 0xFFFF) /* Revison field */
+
+int
+get_cpuid(char *buffer, size_t sz)
+{
+	unsigned long pvr;
+	int nb;
+
+	pvr = mfspr(SPRN_PVR);
+
+	nb = snprintf(buffer, sz, "%lu,%lu$", PVR_VER(pvr), PVR_REV(pvr));
+
+	/* look for end marker to ensure the entire data fit */
+	if (strchr(buffer, '$')) {
+		buffer[nb-1] = '\0';
+		return 0;
+	}
+	return -1;
+}

tools/perf/arch/x86/Makefile

@@ -2,3 +2,4 @@ ifndef NO_DWARF
 PERF_HAVE_DWARF_REGS := 1
 LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/dwarf-regs.o
 endif
+LIB_OBJS += $(OUTPUT)arch/$(ARCH)/util/header.o

tools/perf/arch/x86/util/header.c

+#include <sys/types.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "../../util/header.h"
+
+static inline void
+cpuid(unsigned int op, unsigned int *a, unsigned int *b, unsigned int *c,
+      unsigned int *d)
+{
+	__asm__ __volatile__ (".byte 0x53\n\tcpuid\n\t"
+			      "movl %%ebx, %%esi\n\t.byte 0x5b"
+			: "=a" (*a),
+			"=S" (*b),
+			"=c" (*c),
+			"=d" (*d)
+			: "a" (op));
+}
+
+int
+get_cpuid(char *buffer, size_t sz)
+{
+	unsigned int a, b, c, d, lvl;
+	int family = -1, model = -1, step = -1;
+	int nb;
+	char vendor[16];
+
+	cpuid(0, &lvl, &b, &c, &d);
+	strncpy(&vendor[0], (char *)(&b), 4);
+	strncpy(&vendor[4], (char *)(&d), 4);
+	strncpy(&vendor[8], (char *)(&c), 4);
+	vendor[12] = '\0';
+
+	if (lvl >= 1) {
+		cpuid(1, &a, &b, &c, &d);
+
+		family = (a >> 8) & 0xf;  /* bits 11 - 8 */
+		model  = (a >> 4) & 0xf;  /* Bits  7 - 4 */
+		step   = a & 0xf;
+
+		/* extended family */
+		if (family == 0xf)
+			family += (a >> 20) & 0xff;
+
+		/* extended model */
+		if (family >= 0x6)
+			model += ((a >> 16) & 0xf) << 4;
+	}
+	nb = snprintf(buffer, sz, "%s,%u,%u,%u$", vendor, family, model, step);
+
+	/* look for end marker to ensure the entire data fit */
+	if (strchr(buffer, '$')) {
+		buffer[nb-1] = '\0';
+		return 0;
+	}
+	return -1;
+}

tools/perf/builtin-annotate.c

@@ -114,7 +114,8 @@ static int hist_entry__tty_annotate(struct hist_entry *he, int evidx)
 				    print_line, full_paths, 0, 0);
 }
 
-static void hists__find_annotations(struct hists *self, int evidx)
+static void hists__find_annotations(struct hists *self, int evidx,
+				    int nr_events)
 {
 	struct rb_node *nd = rb_first(&self->entries), *next;
 	int key = KEY_RIGHT;
@@ -137,7 +138,8 @@ static void hists__find_annotations(struct hists *self, int evidx)
 		}
 
 		if (use_browser > 0) {
-			key = hist_entry__tui_annotate(he, evidx);
+			key = hist_entry__tui_annotate(he, evidx, nr_events,
+						       NULL, NULL, 0);
 			switch (key) {
 			case KEY_RIGHT:
 				next = rb_next(nd);
@@ -215,7 +217,8 @@ static int __cmd_annotate(void)
 			total_nr_samples += nr_samples;
 			hists__collapse_resort(hists);
 			hists__output_resort(hists);
-			hists__find_annotations(hists, pos->idx);
+			hists__find_annotations(hists, pos->idx,
+						session->evlist->nr_entries);
 		}
 	}
 
@@ -269,9 +272,9 @@ static const struct option options[] = {
 	OPT_STRING('c', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
 	OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
 		   "Look for files with symbols relative to this directory"),
-	OPT_BOOLEAN('0', "source", &symbol_conf.annotate_src,
+	OPT_BOOLEAN(0, "source", &symbol_conf.annotate_src,
 		    "Interleave source code with assembly code (default)"),
-	OPT_BOOLEAN('0', "asm-raw", &symbol_conf.annotate_asm_raw,
+	OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw,
 		    "Display raw encoding of assembly instructions (default)"),
 	OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
 		   "Specify disassembler style (e.g. -M intel for intel syntax)"),

tools/perf/builtin-diff.c

@@ -162,7 +162,7 @@ static int __cmd_diff(void)
 
 	hists__match(&session[0]->hists, &session[1]->hists);
 	hists__fprintf(&session[1]->hists, &session[0]->hists,
-		       show_displacement, stdout);
+		       show_displacement, true, 0, 0, stdout);
 out_delete:
 	for (i = 0; i < 2; ++i)
 		perf_session__delete(session[i]);

tools/perf/builtin-record.c

@@ -529,6 +529,19 @@ static int __cmd_record(int argc, const char **argv)
 	if (have_tracepoints(&evsel_list->entries))
 		perf_header__set_feat(&session->header, HEADER_TRACE_INFO);
 
+	perf_header__set_feat(&session->header, HEADER_HOSTNAME);
+	perf_header__set_feat(&session->header, HEADER_OSRELEASE);
+	perf_header__set_feat(&session->header, HEADER_ARCH);
+	perf_header__set_feat(&session->header, HEADER_CPUDESC);
+	perf_header__set_feat(&session->header, HEADER_NRCPUS);
+	perf_header__set_feat(&session->header, HEADER_EVENT_DESC);
+	perf_header__set_feat(&session->header, HEADER_CMDLINE);
+	perf_header__set_feat(&session->header, HEADER_VERSION);
+	perf_header__set_feat(&session->header, HEADER_CPU_TOPOLOGY);
+	perf_header__set_feat(&session->header, HEADER_TOTAL_MEM);
+	perf_header__set_feat(&session->header, HEADER_NUMA_TOPOLOGY);
+	perf_header__set_feat(&session->header, HEADER_CPUID);
+
 	/* 512 kiB: default amount of unprivileged mlocked memory */
 	if (mmap_pages == UINT_MAX)
 		mmap_pages = (512 * 1024) / page_size;
@@ -800,6 +813,8 @@ int cmd_record(int argc, const char **argv, const char *prefix __used)
 	int err = -ENOMEM;
 	struct perf_evsel *pos;
 
+	perf_header__set_cmdline(argc, argv);
+
 	evsel_list = perf_evlist__new(NULL, NULL);
 	if (evsel_list == NULL)
 		return -ENOMEM;

tools/perf/builtin-report.c

@@ -40,6 +40,7 @@ static char		const *input_name = "perf.data";
 static bool		force, use_tui, use_stdio;
 static bool		hide_unresolved;
 static bool		dont_use_callchains;
+static bool		show_full_info;
 
 static bool		show_threads;
 static struct perf_read_values	show_threads_values;
@@ -232,7 +233,7 @@ static int perf_evlist__tty_browse_hists(struct perf_evlist *evlist,
 		const char *evname = event_name(pos);
 
 		hists__fprintf_nr_sample_events(hists, evname, stdout);
-		hists__fprintf(hists, NULL, false, stdout);
+		hists__fprintf(hists, NULL, false, true, 0, 0, stdout);
 		fprintf(stdout, "\n\n");
 	}
 
@@ -273,6 +274,9 @@ static int __cmd_report(void)
 			goto out_delete;
 	}
 
+	if (use_browser <= 0)
+		perf_session__fprintf_info(session, stdout, show_full_info);
+
 	if (show_threads)
 		perf_read_values_init(&show_threads_values);
 
@@ -327,9 +331,10 @@ static int __cmd_report(void)
 		goto out_delete;
 	}
 
-	if (use_browser > 0)
-		perf_evlist__tui_browse_hists(session->evlist, help);
-	else
+	if (use_browser > 0) {
+		perf_evlist__tui_browse_hists(session->evlist, help,
+					      NULL, NULL, 0);
+	} else
 		perf_evlist__tty_browse_hists(session->evlist, help);
 
 out_delete:
@@ -484,8 +489,16 @@ static const struct option options[] = {
 	OPT_STRING(0, "symfs", &symbol_conf.symfs, "directory",
 		    "Look for files with symbols relative to this directory"),
 	OPT_STRING('c', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
+	OPT_BOOLEAN('I', "show-info", &show_full_info,
+		    "Display extended information about perf.data file"),
+	OPT_BOOLEAN(0, "source", &symbol_conf.annotate_src,
+		    "Interleave source code with assembly code (default)"),
+	OPT_BOOLEAN(0, "asm-raw", &symbol_conf.annotate_asm_raw,
+		    "Display raw encoding of assembly instructions (default)"),
 	OPT_STRING('M', "disassembler-style", &disassembler_style, "disassembler style",
 		   "Specify disassembler style (e.g. -M intel for intel syntax)"),
+	OPT_BOOLEAN(0, "show-total-period", &symbol_conf.show_total_period,
+		    "Show a column with the sum of periods"),
 	OPT_END()
 };
 

tools/perf/builtin-script.c

@@ -22,6 +22,7 @@ static u64			last_timestamp;
 static u64			nr_unordered;
 extern const struct option	record_options[];
 static bool			no_callchain;
+static bool			show_full_info;
 static const char		*cpu_list;
 static DECLARE_BITMAP(cpu_bitmap, MAX_NR_CPUS);
 
@@ -1083,7 +1084,8 @@ static const struct option options[] = {
 		     "comma separated output fields prepend with 'type:'. Valid types: hw,sw,trace,raw. Fields: comm,tid,pid,time,cpu,event,trace,ip,sym,dso,addr",
 		     parse_output_fields),
 	OPT_STRING('c', "cpu", &cpu_list, "cpu", "list of cpus to profile"),
-
+	OPT_BOOLEAN('I', "show-info", &show_full_info,
+		    "display extended information from perf.data file"),
 	OPT_END()
 };
 
@@ -1268,6 +1270,8 @@ int cmd_script(int argc, const char **argv, const char *prefix __used)
 			return -1;
 	}
 
+	perf_session__fprintf_info(session, stdout, show_full_info);
+
 	if (!no_callchain)
 		symbol_conf.use_callchain = true;
 	else

tools/perf/builtin.h

@@ -4,7 +4,6 @@
 #include "util/util.h"
 #include "util/strbuf.h"
 
-extern const char perf_version_string[];
 extern const char perf_usage_string[];
 extern const char perf_more_info_string[];
 

tools/perf/perf.h

@@ -9,18 +9,21 @@ void get_term_dimensions(struct winsize *ws);
 #include "../../arch/x86/include/asm/unistd.h"
 #define rmb()		asm volatile("lock; addl $0,0(%%esp)" ::: "memory")
 #define cpu_relax()	asm volatile("rep; nop" ::: "memory");
+#define CPUINFO_PROC	"model name"
 #endif
 
 #if defined(__x86_64__)
 #include "../../arch/x86/include/asm/unistd.h"
 #define rmb()		asm volatile("lfence" ::: "memory")
 #define cpu_relax()	asm volatile("rep; nop" ::: "memory");
+#define CPUINFO_PROC	"model name"
 #endif
 
 #ifdef __powerpc__
 #include "../../arch/powerpc/include/asm/unistd.h"
 #define rmb()		asm volatile ("sync" ::: "memory")
 #define cpu_relax()	asm volatile ("" ::: "memory");
+#define CPUINFO_PROC	"cpu"
 #endif
 
 #ifdef __s390__
@@ -37,30 +40,35 @@ void get_term_dimensions(struct winsize *ws);
 # define rmb()		asm volatile("" ::: "memory")
 #endif
 #define cpu_relax()	asm volatile("" ::: "memory")
+#define CPUINFO_PROC	"cpu type"
 #endif
 
 #ifdef __hppa__
 #include "../../arch/parisc/include/asm/unistd.h"
 #define rmb()		asm volatile("" ::: "memory")
 #define cpu_relax()	asm volatile("" ::: "memory");
+#define CPUINFO_PROC	"cpu"
 #endif
 
 #ifdef __sparc__
 #include "../../arch/sparc/include/asm/unistd.h"
 #define rmb()		asm volatile("":::"memory")
 #define cpu_relax()	asm volatile("":::"memory")
+#define CPUINFO_PROC	"cpu"
 #endif
 
 #ifdef __alpha__
 #include "../../arch/alpha/include/asm/unistd.h"
 #define rmb()		asm volatile("mb" ::: "memory")
 #define cpu_relax()	asm volatile("" ::: "memory")
+#define CPUINFO_PROC	"cpu model"
 #endif
 
 #ifdef __ia64__
 #include "../../arch/ia64/include/asm/unistd.h"
 #define rmb()		asm volatile ("mf" ::: "memory")
 #define cpu_relax()	asm volatile ("hint @pause" ::: "memory")
+#define CPUINFO_PROC	"model name"
 #endif
 
 #ifdef __arm__
@@ -71,6 +79,7 @@ void get_term_dimensions(struct winsize *ws);
  */
 #define rmb()		((void(*)(void))0xffff0fa0)()
 #define cpu_relax()	asm volatile("":::"memory")
+#define CPUINFO_PROC	"Processor"
 #endif
 
 #ifdef __mips__
@@ -83,6 +92,7 @@ void get_term_dimensions(struct winsize *ws);
 				: /* no input */			\
 				: "memory")
 #define cpu_relax()	asm volatile("" ::: "memory")
+#define CPUINFO_PROC	"cpu model"
 #endif
 
 #include <time.h>
@@ -171,5 +181,6 @@ struct ip_callchain {
 };
 
 extern bool perf_host, perf_guest;
+extern const char perf_version_string[];
 
 #endif

tools/perf/util/annotate.h

@@ -91,13 +91,16 @@ int symbol__tty_annotate(struct symbol *sym, struct map *map, int evidx,
 #ifdef NO_NEWT_SUPPORT
 static inline int symbol__tui_annotate(struct symbol *sym __used,
 				       struct map *map __used,
-				       int evidx __used, int refresh __used)
+				       int evidx __used,
+				       void(*timer)(void *arg) __used,
+				       void *arg __used, int delay_secs __used)
 {
 	return 0;
 }
 #else
 int symbol__tui_annotate(struct symbol *sym, struct map *map, int evidx,
-			 int refresh);
+			 int nr_events, void(*timer)(void *arg), void *arg,
+			 int delay_secs);
 #endif
 
 extern const char	*disassembler_style;

tools/perf/util/evlist.c

@@ -533,3 +533,9 @@ bool perf_evlist__sample_id_all(const struct perf_evlist *evlist)
 	first = list_entry(evlist->entries.next, struct perf_evsel, node);
 	return first->attr.sample_id_all;
 }
+
+void perf_evlist__set_selected(struct perf_evlist *evlist,
+			       struct perf_evsel *evsel)
+{
+	evlist->selected = evsel;
+}

tools/perf/util/evlist.h

@@ -25,6 +25,7 @@ struct perf_evlist {
 	struct pollfd	 *pollfd;
 	struct thread_map *threads;
 	struct cpu_map	  *cpus;
+	struct perf_evsel *selected;
 };
 
 struct perf_evsel;
@@ -56,6 +57,9 @@ void perf_evlist__munmap(struct perf_evlist *evlist);
 void perf_evlist__disable(struct perf_evlist *evlist);
 void perf_evlist__enable(struct perf_evlist *evlist);
 
+void perf_evlist__set_selected(struct perf_evlist *evlist,
+			       struct perf_evsel *evsel);
+
 static inline void perf_evlist__set_maps(struct perf_evlist *evlist,
 					 struct cpu_map *cpus,
 					 struct thread_map *threads)

tools/perf/util/evsel.c

@@ -39,6 +39,7 @@ void perf_evsel__init(struct perf_evsel *evsel,
 	evsel->idx	   = idx;
 	evsel->attr	   = *attr;
 	INIT_LIST_HEAD(&evsel->node);
+	hists__init(&evsel->hists);
 }
 
 struct perf_evsel *perf_evsel__new(struct perf_event_attr *attr, int idx)

tools/perf/util/header.h

@@ -12,6 +12,20 @@
 enum {
 	HEADER_TRACE_INFO = 1,
 	HEADER_BUILD_ID,
+
+	HEADER_HOSTNAME,
+	HEADER_OSRELEASE,
+	HEADER_VERSION,
+	HEADER_ARCH,
+	HEADER_NRCPUS,
+	HEADER_CPUDESC,
+	HEADER_CPUID,
+	HEADER_TOTAL_MEM,
+	HEADER_CMDLINE,
+	HEADER_EVENT_DESC,
+	HEADER_CPU_TOPOLOGY,
+	HEADER_NUMA_TOPOLOGY,
+
 	HEADER_LAST_FEATURE,
 };
 
@@ -68,10 +82,15 @@ void perf_header__set_feat(struct perf_header *header, int feat);
 void perf_header__clear_feat(struct perf_header *header, int feat);
 bool perf_header__has_feat(const struct perf_header *header, int feat);
 
+int perf_header__set_cmdline(int argc, const char **argv);
+
 int perf_header__process_sections(struct perf_header *header, int fd,
+				  void *data,
 				  int (*process)(struct perf_file_section *section,
-						 struct perf_header *ph,
-						 int feat, int fd));
+				  struct perf_header *ph,
+				  int feat, int fd, void *data));
+
+int perf_header__fprintf_info(struct perf_session *s, FILE *fp, bool full);
 
 int build_id_cache__add_s(const char *sbuild_id, const char *debugdir,
 			  const char *name, bool is_kallsyms);
@@ -104,4 +123,10 @@ int perf_event__synthesize_build_id(struct dso *pos, u16 misc,
 				    struct perf_session *session);
 int perf_event__process_build_id(union perf_event *event,
 				 struct perf_session *session);
+
+/*
+ * arch specific callback
+ */
+int get_cpuid(char *buffer, size_t sz);
+
 #endif /* __PERF_HEADER_H */

tools/perf/util/hist.c

@@ -18,56 +18,56 @@ struct callchain_param	callchain_param = {
 	.order  = ORDER_CALLEE
 };
 
-u16 hists__col_len(struct hists *self, enum hist_column col)
+u16 hists__col_len(struct hists *hists, enum hist_column col)
 {
-	return self->col_len[col];
+	return hists->col_len[col];
 }
 
-void hists__set_col_len(struct hists *self, enum hist_column col, u16 len)
+void hists__set_col_len(struct hists *hists, enum hist_column col, u16 len)
 {
-	self->col_len[col] = len;
+	hists->col_len[col] = len;
 }
 
-bool hists__new_col_len(struct hists *self, enum hist_column col, u16 len)
+bool hists__new_col_len(struct hists *hists, enum hist_column col, u16 len)
 {
-	if (len > hists__col_len(self, col)) {
-		hists__set_col_len(self, col, len);
+	if (len > hists__col_len(hists, col)) {
+		hists__set_col_len(hists, col, len);
 		return true;
 	}
 	return false;
 }
 
-static void hists__reset_col_len(struct hists *self)
+static void hists__reset_col_len(struct hists *hists)
 {
 	enum hist_column col;
 
 	for (col = 0; col < HISTC_NR_COLS; ++col)
-		hists__set_col_len(self, col, 0);
+		hists__set_col_len(hists, col, 0);
 }
 
-static void hists__calc_col_len(struct hists *self, struct hist_entry *h)
+static void hists__calc_col_len(struct hists *hists, struct hist_entry *h)
 {
 	u16 len;
 
 	if (h->ms.sym)
-		hists__new_col_len(self, HISTC_SYMBOL, h->ms.sym->namelen);
+		hists__new_col_len(hists, HISTC_SYMBOL, h->ms.sym->namelen);
 	else {
 		const unsigned int unresolved_col_width = BITS_PER_LONG / 4;
 
-		if (hists__col_len(self, HISTC_DSO) < unresolved_col_width &&
+		if (hists__col_len(hists, HISTC_DSO) < unresolved_col_width &&
 		    !symbol_conf.col_width_list_str && !symbol_conf.field_sep &&
 		    !symbol_conf.dso_list)
-			hists__set_col_len(self, HISTC_DSO,
+			hists__set_col_len(hists, HISTC_DSO,
 					   unresolved_col_width);
 	}
 
 	len = thread__comm_len(h->thread);
-	if (hists__new_col_len(self, HISTC_COMM, len))
-		hists__set_col_len(self, HISTC_THREAD, len + 6);
+	if (hists__new_col_len(hists, HISTC_COMM, len))
+		hists__set_col_len(hists, HISTC_THREAD, len + 6);
 
 	if (h->ms.map) {
 		len = dso__name_len(h->ms.map->dso);
-		hists__new_col_len(self, HISTC_DSO, len);
+		hists__new_col_len(hists, HISTC_DSO, len);
 	}
 }
 
@@ -92,6 +92,41 @@ static void hist_entry__add_cpumode_period(struct hist_entry *self,
 	}
 }
 
+static void hist_entry__decay(struct hist_entry *he)
+{
+	he->period = (he->period * 7) / 8;
+	he->nr_events = (he->nr_events * 7) / 8;
+}
+
+static bool hists__decay_entry(struct hists *hists, struct hist_entry *he)
+{
+	hists->stats.total_period -= he->period;
+	hist_entry__decay(he);
+	hists->stats.total_period += he->period;
+	return he->period == 0;
+}
+
+void hists__decay_entries(struct hists *hists)
+{
+	struct rb_node *next = rb_first(&hists->entries);
+	struct hist_entry *n;
+
+	while (next) {
+		n = rb_entry(next, struct hist_entry, rb_node);
+		next = rb_next(&n->rb_node);
+
+		if (hists__decay_entry(hists, n)) {
+			rb_erase(&n->rb_node, &hists->entries);
+
+			if (sort__need_collapse)
+				rb_erase(&n->rb_node_in, &hists->entries_collapsed);
+
+			hist_entry__free(n);
+			--hists->nr_entries;
+		}
+	}
+}
+
 /*
  * histogram, sorted on item, collects periods
  */
@@ -113,11 +148,12 @@ static struct hist_entry *hist_entry__new(struct hist_entry *template)
 	return self;
 }
 
-static void hists__inc_nr_entries(struct hists *self, struct hist_entry *h)
+static void hists__inc_nr_entries(struct hists *hists, struct hist_entry *h)
 {
 	if (!h->filtered) {
-		hists__calc_col_len(self, h);
-		++self->nr_entries;
+		hists__calc_col_len(hists, h);
+		++hists->nr_entries;
+		hists->stats.total_period += h->period;
 	}
 }
 
@@ -128,11 +164,11 @@ static u8 symbol__parent_filter(const struct symbol *parent)
 	return 0;
 }
 
-struct hist_entry *__hists__add_entry(struct hists *self,
+struct hist_entry *__hists__add_entry(struct hists *hists,
 				      struct addr_location *al,
 				      struct symbol *sym_parent, u64 period)
 {
-	struct rb_node **p = &self->entries.rb_node;
+	struct rb_node **p;
 	struct rb_node *parent = NULL;
 	struct hist_entry *he;
 	struct hist_entry entry = {
@@ -150,9 +186,13 @@ struct hist_entry *__hists__add_entry(struct hists *self,
 	};
 	int cmp;
 
+	pthread_mutex_lock(&hists->lock);
+
+	p = &hists->entries_in->rb_node;
+
 	while (*p != NULL) {
 		parent = *p;
-		he = rb_entry(parent, struct hist_entry, rb_node);
+		he = rb_entry(parent, struct hist_entry, rb_node_in);
 
 		cmp = hist_entry__cmp(&entry, he);
 
@@ -170,12 +210,14 @@ struct hist_entry *__hists__add_entry(struct hists *self,
 
 	he = hist_entry__new(&entry);
 	if (!he)
-		return NULL;
-	rb_link_node(&he->rb_node, parent, p);
-	rb_insert_color(&he->rb_node, &self->entries);
-	hists__inc_nr_entries(self, he);
+		goto out_unlock;
+
+	rb_link_node(&he->rb_node_in, parent, p);
+	rb_insert_color(&he->rb_node_in, hists->entries_in);
 out:
 	hist_entry__add_cpumode_period(he, al->cpumode, period);
+out_unlock:
+	pthread_mutex_unlock(&hists->lock);
 	return he;
 }
 
@@ -222,7 +264,7 @@ void hist_entry__free(struct hist_entry *he)
  * collapse the histogram
  */
 
-static bool hists__collapse_insert_entry(struct hists *self,
+static bool hists__collapse_insert_entry(struct hists *hists,
 					 struct rb_root *root,
 					 struct hist_entry *he)
 {
@@ -233,15 +275,16 @@ static bool hists__collapse_insert_entry(struct hists *self,
 
 	while (*p != NULL) {
 		parent = *p;
-		iter = rb_entry(parent, struct hist_entry, rb_node);
+		iter = rb_entry(parent, struct hist_entry, rb_node_in);
 
 		cmp = hist_entry__collapse(iter, he);
 
 		if (!cmp) {
 			iter->period += he->period;
+			iter->nr_events += he->nr_events;
 			if (symbol_conf.use_callchain) {
-				callchain_cursor_reset(&self->callchain_cursor);
-				callchain_merge(&self->callchain_cursor, iter->callchain,
+				callchain_cursor_reset(&hists->callchain_cursor);
+				callchain_merge(&hists->callchain_cursor, iter->callchain,
 						he->callchain);
 			}
 			hist_entry__free(he);
@@ -254,35 +297,57 @@ static bool hists__collapse_insert_entry(struct hists *self,
 			p = &(*p)->rb_right;
 	}
 
-	rb_link_node(&he->rb_node, parent, p);
-	rb_insert_color(&he->rb_node, root);
+	rb_link_node(&he->rb_node_in, parent, p);
+	rb_insert_color(&he->rb_node_in, root);
 	return true;
 }
 
-void hists__collapse_resort(struct hists *self)
+static struct rb_root *hists__get_rotate_entries_in(struct hists *hists)
+{
+	struct rb_root *root;
+
+	pthread_mutex_lock(&hists->lock);
+
+	root = hists->entries_in;
+	if (++hists->entries_in > &hists->entries_in_array[1])
+		hists->entries_in = &hists->entries_in_array[0];
+
+	pthread_mutex_unlock(&hists->lock);
+
+	return root;
+}
+
+static void __hists__collapse_resort(struct hists *hists, bool threaded)
 {
-	struct rb_root tmp;
+	struct rb_root *root;
 	struct rb_node *next;
 	struct hist_entry *n;
 
-	if (!sort__need_collapse)
+	if (!sort__need_collapse && !threaded)
 		return;
 
-	tmp = RB_ROOT;
-	next = rb_first(&self->entries);
-	self->nr_entries = 0;
-	hists__reset_col_len(self);
+	root = hists__get_rotate_entries_in(hists);
+	next = rb_first(root);
+	hists->stats.total_period = 0;
 
 	while (next) {
-		n = rb_entry(next, struct hist_entry, rb_node);
-		next = rb_next(&n->rb_node);
+		n = rb_entry(next, struct hist_entry, rb_node_in);
+		next = rb_next(&n->rb_node_in);
 
-		rb_erase(&n->rb_node, &self->entries);
-		if (hists__collapse_insert_entry(self, &tmp, n))
-			hists__inc_nr_entries(self, n);
+		rb_erase(&n->rb_node_in, root);
+		if (hists__collapse_insert_entry(hists, &hists->entries_collapsed, n))
+			hists__inc_nr_entries(hists, n);
 	}
+}
 
-	self->entries = tmp;
+void hists__collapse_resort(struct hists *hists)
+{
+	return __hists__collapse_resort(hists, false);
+}
+
+void hists__collapse_resort_threaded(struct hists *hists)
+{
+	return __hists__collapse_resort(hists, true);
 }
 
 /*
@@ -315,31 +380,43 @@ static void __hists__insert_output_entry(struct rb_root *entries,
 	rb_insert_color(&he->rb_node, entries);
 }
 
-void hists__output_resort(struct hists *self)
+static void __hists__output_resort(struct hists *hists, bool threaded)
 {
-	struct rb_root tmp;
+	struct rb_root *root;
 	struct rb_node *next;
 	struct hist_entry *n;
 	u64 min_callchain_hits;
 
-	min_callchain_hits = self->stats.total_period * (callchain_param.min_percent / 100);
+	min_callchain_hits = hists->stats.total_period * (callchain_param.min_percent / 100);
+
+	if (sort__need_collapse || threaded)
+		root = &hists->entries_collapsed;
+	else
+		root = hists->entries_in;
 
-	tmp = RB_ROOT;
-	next = rb_first(&self->entries);
+	next = rb_first(root);
+	hists->entries = RB_ROOT;
 
-	self->nr_entries = 0;
-	hists__reset_col_len(self);
+	hists->nr_entries = 0;
+	hists__reset_col_len(hists);
 
 	while (next) {
-		n = rb_entry(next, struct hist_entry, rb_node);
-		next = rb_next(&n->rb_node);
+		n = rb_entry(next, struct hist_entry, rb_node_in);
+		next = rb_next(&n->rb_node_in);
 
-		rb_erase(&n->rb_node, &self->entries);
-		__hists__insert_output_entry(&tmp, n, min_callchain_hits);
-		hists__inc_nr_entries(self, n);
+		__hists__insert_output_entry(&hists->entries, n, min_callchain_hits);
+		hists__inc_nr_entries(hists, n);
 	}
+}
+
+void hists__output_resort(struct hists *hists)
+{
+	return __hists__output_resort(hists, false);
+}
 
-	self->entries = tmp;
+void hists__output_resort_threaded(struct hists *hists)
+{
+	return __hists__output_resort(hists, true);
 }
 
 static size_t callchain__fprintf_left_margin(FILE *fp, int left_margin)
@@ -594,6 +671,21 @@ static size_t hist_entry_callchain__fprintf(FILE *fp, struct hist_entry *self,
 	return ret;
 }
 
+void hists__output_recalc_col_len(struct hists *hists, int max_rows)
+{
+	struct rb_node *next = rb_first(&hists->entries);
+	struct hist_entry *n;
+	int row = 0;
+
+	hists__reset_col_len(hists);
+
+	while (next && row++ < max_rows) {
+		n = rb_entry(next, struct hist_entry, rb_node);
+		hists__calc_col_len(hists, n);
+		next = rb_next(&n->rb_node);
+	}
+}
+
 int hist_entry__snprintf(struct hist_entry *self, char *s, size_t size,
 			 struct hists *hists, struct hists *pair_hists,
 			 bool show_displacement, long displacement,
@@ -664,6 +756,13 @@ int hist_entry__snprintf(struct hist_entry *self, char *s, size_t size,
 			ret += snprintf(s + ret, size - ret, "%11" PRIu64, nr_events);
 	}
 
+	if (symbol_conf.show_total_period) {
+		if (sep)
+			ret += snprintf(s + ret, size - ret, "%c%" PRIu64, *sep, period);
+		else
+			ret += snprintf(s + ret, size - ret, " %12" PRIu64, period);
+	}
+
 	if (pair_hists) {
 		char bf[32];
 		double old_percent = 0, new_percent = 0, diff;
@@ -710,12 +809,16 @@ int hist_entry__snprintf(struct hist_entry *self, char *s, size_t size,
 	return ret;
 }
 
-int hist_entry__fprintf(struct hist_entry *self, struct hists *hists,
+int hist_entry__fprintf(struct hist_entry *he, size_t size, struct hists *hists,
 			struct hists *pair_hists, bool show_displacement,
 			long displacement, FILE *fp, u64 session_total)
 {
 	char bf[512];
-	hist_entry__snprintf(self, bf, sizeof(bf), hists, pair_hists,
+
+	if (size == 0 || size > sizeof(bf))
+		size = sizeof(bf);
+
+	hist_entry__snprintf(he, bf, size, hists, pair_hists,
 			     show_displacement, displacement,
 			     true, session_total);
 	return fprintf(fp, "%s\n", bf);
@@ -738,8 +841,9 @@ static size_t hist_entry__fprintf_callchain(struct hist_entry *self,
 					     left_margin);
 }
 
-size_t hists__fprintf(struct hists *self, struct hists *pair,
-		      bool show_displacement, FILE *fp)
+size_t hists__fprintf(struct hists *hists, struct hists *pair,
+		      bool show_displacement, bool show_header, int max_rows,
+		      int max_cols, FILE *fp)
 {
 	struct sort_entry *se;
 	struct rb_node *nd;
@@ -749,9 +853,13 @@ size_t hists__fprintf(struct hists *self, struct hists *pair,
 	unsigned int width;
 	const char *sep = symbol_conf.field_sep;
 	const char *col_width = symbol_conf.col_width_list_str;
+	int nr_rows = 0;
 
 	init_rem_hits();
 
+	if (!show_header)
+		goto print_entries;
+
 	fprintf(fp, "# %s", pair ? "Baseline" : "Overhead");
 
 	if (symbol_conf.show_nr_samples) {
@@ -761,6 +869,13 @@ size_t hists__fprintf(struct hists *self, struct hists *pair,
 			fputs("  Samples  ", fp);
 	}
 
+	if (symbol_conf.show_total_period) {
+		if (sep)
+			ret += fprintf(fp, "%cPeriod", *sep);
+		else
+			ret += fprintf(fp, "   Period    ");
+	}
+
 	if (symbol_conf.show_cpu_utilization) {
 		if (sep) {
 			ret += fprintf(fp, "%csys", *sep);
@@ -803,18 +918,21 @@ size_t hists__fprintf(struct hists *self, struct hists *pair,
 		width = strlen(se->se_header);
 		if (symbol_conf.col_width_list_str) {
 			if (col_width) {
-				hists__set_col_len(self, se->se_width_idx,
+				hists__set_col_len(hists, se->se_width_idx,
 						   atoi(col_width));
 				col_width = strchr(col_width, ',');
 				if (col_width)
 					++col_width;
 			}
 		}
-		if (!hists__new_col_len(self, se->se_width_idx, width))
-			width = hists__col_len(self, se->se_width_idx);
+		if (!hists__new_col_len(hists, se->se_width_idx, width))
+			width = hists__col_len(hists, se->se_width_idx);
 		fprintf(fp, "  %*s", width, se->se_header);
 	}
+
 	fprintf(fp, "\n");
+	if (max_rows && ++nr_rows >= max_rows)
+		goto out;
 
 	if (sep)
 		goto print_entries;
@@ -822,6 +940,8 @@ size_t hists__fprintf(struct hists *self, struct hists *pair,
 	fprintf(fp, "# ........");
 	if (symbol_conf.show_nr_samples)
 		fprintf(fp, " ..........");
+	if (symbol_conf.show_total_period)
+		fprintf(fp, " ............");
 	if (pair) {
 		fprintf(fp, " ..........");
 		if (show_displacement)
@@ -834,17 +954,23 @@ size_t hists__fprintf(struct hists *self, struct hists *pair,
 			continue;
 
 		fprintf(fp, "  ");
-		width = hists__col_len(self, se->se_width_idx);
+		width = hists__col_len(hists, se->se_width_idx);
 		if (width == 0)
 			width = strlen(se->se_header);
 		for (i = 0; i < width; i++)
 			fprintf(fp, ".");
 	}
 
-	fprintf(fp, "\n#\n");
+	fprintf(fp, "\n");
+	if (max_rows && ++nr_rows >= max_rows)
+		goto out;
+
+	fprintf(fp, "#\n");
+	if (max_rows && ++nr_rows >= max_rows)
+		goto out;
 
 print_entries:
-	for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) {
+	for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) {
 		struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
 
 		if (h->filtered)
@@ -858,19 +984,22 @@ size_t hists__fprintf(struct hists *self, struct hists *pair,
 				displacement = 0;
 			++position;
 		}
-		ret += hist_entry__fprintf(h, self, pair, show_displacement,
-					   displacement, fp, self->stats.total_period);
+		ret += hist_entry__fprintf(h, max_cols, hists, pair, show_displacement,
+					   displacement, fp, hists->stats.total_period);
 
 		if (symbol_conf.use_callchain)
-			ret += hist_entry__fprintf_callchain(h, self, fp,
-							     self->stats.total_period);
+			ret += hist_entry__fprintf_callchain(h, hists, fp,
+							     hists->stats.total_period);
+		if (max_rows && ++nr_rows >= max_rows)
+			goto out;
+
 		if (h->ms.map == NULL && verbose > 1) {
 			__map_groups__fprintf_maps(&h->thread->mg,
 						   MAP__FUNCTION, verbose, fp);
 			fprintf(fp, "%.10s end\n", graph_dotted_line);
 		}
 	}
-
+out:
 	free(rem_sq_bracket);
 
 	return ret;
@@ -879,7 +1008,7 @@ size_t hists__fprintf(struct hists *self, struct hists *pair,
 /*
  * See hists__fprintf to match the column widths
  */
-unsigned int hists__sort_list_width(struct hists *self)
+unsigned int hists__sort_list_width(struct hists *hists)
 {
 	struct sort_entry *se;
 	int ret = 9; /* total % */
@@ -896,9 +1025,12 @@ unsigned int hists__sort_list_width(struct hists *self)
 	if (symbol_conf.show_nr_samples)
 		ret += 11;
 
+	if (symbol_conf.show_total_period)
+		ret += 13;
+
 	list_for_each_entry(se, &hist_entry__sort_list, list)
 		if (!se->elide)
-			ret += 2 + hists__col_len(self, se->se_width_idx);
+			ret += 2 + hists__col_len(hists, se->se_width_idx);
 
 	if (verbose) /* Addr + origin */
 		ret += 3 + BITS_PER_LONG / 4;
@@ -906,32 +1038,32 @@ unsigned int hists__sort_list_width(struct hists *self)
 	return ret;
 }
 
-static void hists__remove_entry_filter(struct hists *self, struct hist_entry *h,
+static void hists__remove_entry_filter(struct hists *hists, struct hist_entry *h,
 				       enum hist_filter filter)
 {
 	h->filtered &= ~(1 << filter);
 	if (h->filtered)
 		return;
 
-	++self->nr_entries;
+	++hists->nr_entries;
 	if (h->ms.unfolded)
-		self->nr_entries += h->nr_rows;
+		hists->nr_entries += h->nr_rows;
 	h->row_offset = 0;
-	self->stats.total_period += h->period;
-	self->stats.nr_events[PERF_RECORD_SAMPLE] += h->nr_events;
+	hists->stats.total_period += h->period;
+	hists->stats.nr_events[PERF_RECORD_SAMPLE] += h->nr_events;
 
-	hists__calc_col_len(self, h);
+	hists__calc_col_len(hists, h);
 }
 
-void hists__filter_by_dso(struct hists *self, const struct dso *dso)
+void hists__filter_by_dso(struct hists *hists, const struct dso *dso)
 {
 	struct rb_node *nd;
 
-	self->nr_entries = self->stats.total_period = 0;
-	self->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
-	hists__reset_col_len(self);
+	hists->nr_entries = hists->stats.total_period = 0;
+	hists->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
+	hists__reset_col_len(hists);
 
-	for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) {
+	for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) {
 		struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
 
 		if (symbol_conf.exclude_other && !h->parent)
@@ -942,19 +1074,19 @@ void hists__filter_by_dso(struct hists *self, const struct dso *dso)
 			continue;
 		}
 
-		hists__remove_entry_filter(self, h, HIST_FILTER__DSO);
+		hists__remove_entry_filter(hists, h, HIST_FILTER__DSO);
 	}
 }
 
-void hists__filter_by_thread(struct hists *self, const struct thread *thread)
+void hists__filter_by_thread(struct hists *hists, const struct thread *thread)
 {
 	struct rb_node *nd;
 
-	self->nr_entries = self->stats.total_period = 0;
-	self->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
-	hists__reset_col_len(self);
+	hists->nr_entries = hists->stats.total_period = 0;
+	hists->stats.nr_events[PERF_RECORD_SAMPLE] = 0;
+	hists__reset_col_len(hists);
 
-	for (nd = rb_first(&self->entries); nd; nd = rb_next(nd)) {
+	for (nd = rb_first(&hists->entries); nd; nd = rb_next(nd)) {
 		struct hist_entry *h = rb_entry(nd, struct hist_entry, rb_node);
 
 		if (thread != NULL && h->thread != thread) {
@@ -962,7 +1094,7 @@ void hists__filter_by_thread(struct hists *self, const struct thread *thread)
 			continue;
 		}
 
-		hists__remove_entry_filter(self, h, HIST_FILTER__THREAD);
+		hists__remove_entry_filter(hists, h, HIST_FILTER__THREAD);
 	}
 }
 
@@ -976,13 +1108,13 @@ int hist_entry__annotate(struct hist_entry *he, size_t privsize)
 	return symbol__annotate(he->ms.sym, he->ms.map, privsize);
 }
 
-void hists__inc_nr_events(struct hists *self, u32 type)
+void hists__inc_nr_events(struct hists *hists, u32 type)
 {
-	++self->stats.nr_events[0];
-	++self->stats.nr_events[type];
+	++hists->stats.nr_events[0];
+	++hists->stats.nr_events[type];
 }
 
-size_t hists__fprintf_nr_events(struct hists *self, FILE *fp)
+size_t hists__fprintf_nr_events(struct hists *hists, FILE *fp)
 {
 	int i;
 	size_t ret = 0;
@@ -990,7 +1122,7 @@ size_t hists__fprintf_nr_events(struct hists *self, FILE *fp)
 	for (i = 0; i < PERF_RECORD_HEADER_MAX; ++i) {
 		const char *name;
 
-		if (self->stats.nr_events[i] == 0)
+		if (hists->stats.nr_events[i] == 0)
 			continue;
 
 		name = perf_event__name(i);
@@ -998,8 +1130,18 @@ size_t hists__fprintf_nr_events(struct hists *self, FILE *fp)
 			continue;
 
 		ret += fprintf(fp, "%16s events: %10d\n", name,
-			       self->stats.nr_events[i]);
+			       hists->stats.nr_events[i]);
 	}
 
 	return ret;
 }
+
+void hists__init(struct hists *hists)
+{
+	memset(hists, 0, sizeof(*hists));
+	hists->entries_in_array[0] = hists->entries_in_array[1] = RB_ROOT;
+	hists->entries_in = &hists->entries_in_array[0];
+	hists->entries_collapsed = RB_ROOT;
+	hists->entries = RB_ROOT;
+	pthread_mutex_init(&hists->lock, NULL);
+}

tools/perf/util/hist.h

@@ -2,6 +2,7 @@
 #define __PERF_HIST_H
 
 #include <linux/types.h>
+#include <pthread.h>
 #include "callchain.h"
 
 extern struct callchain_param callchain_param;
@@ -43,8 +44,12 @@ enum hist_column {
 };
 
 struct hists {
+	struct rb_root		entries_in_array[2];
+	struct rb_root		*entries_in;
 	struct rb_root		entries;
+	struct rb_root		entries_collapsed;
 	u64			nr_entries;
+	pthread_mutex_t		lock;
 	struct events_stats	stats;
 	u64			event_stream;
 	u16			col_len[HISTC_NR_COLS];
@@ -52,14 +57,16 @@ struct hists {
 	struct callchain_cursor	callchain_cursor;
 };
 
+void hists__init(struct hists *hists);
+
 struct hist_entry *__hists__add_entry(struct hists *self,
 				      struct addr_location *al,
 				      struct symbol *parent, u64 period);
 extern int64_t hist_entry__cmp(struct hist_entry *, struct hist_entry *);
 extern int64_t hist_entry__collapse(struct hist_entry *, struct hist_entry *);
-int hist_entry__fprintf(struct hist_entry *self, struct hists *hists,
+int hist_entry__fprintf(struct hist_entry *he, size_t size, struct hists *hists,
 			struct hists *pair_hists, bool show_displacement,
-			long displacement, FILE *fp, u64 total);
+			long displacement, FILE *fp, u64 session_total);
 int hist_entry__snprintf(struct hist_entry *self, char *bf, size_t size,
 			 struct hists *hists, struct hists *pair_hists,
 			 bool show_displacement, long displacement,
@@ -67,13 +74,19 @@ int hist_entry__snprintf(struct hist_entry *self, char *bf, size_t size,
 void hist_entry__free(struct hist_entry *);
 
 void hists__output_resort(struct hists *self);
+void hists__output_resort_threaded(struct hists *hists);
 void hists__collapse_resort(struct hists *self);
+void hists__collapse_resort_threaded(struct hists *hists);
+
+void hists__decay_entries(struct hists *hists);
+void hists__output_recalc_col_len(struct hists *hists, int max_rows);
 
 void hists__inc_nr_events(struct hists *self, u32 type);
 size_t hists__fprintf_nr_events(struct hists *self, FILE *fp);
 
 size_t hists__fprintf(struct hists *self, struct hists *pair,
-		      bool show_displacement, FILE *fp);
+		      bool show_displacement, bool show_header,
+		      int max_rows, int max_cols, FILE *fp);
 
 int hist_entry__inc_addr_samples(struct hist_entry *self, int evidx, u64 addr);
 int hist_entry__annotate(struct hist_entry *self, size_t privsize);
@@ -90,13 +103,16 @@ struct perf_evlist;
 #ifdef NO_NEWT_SUPPORT
 static inline
 int perf_evlist__tui_browse_hists(struct perf_evlist *evlist __used,
-				  const char *help __used)
+				  const char *help __used, void(*timer)(void *arg) __used, void *arg,
+				  int refresh __used)
 {
 	return 0;
 }
 
 static inline int hist_entry__tui_annotate(struct hist_entry *self __used,
-					   int evidx __used)
+					   int evidx __used, int nr_events __used,
+					   void(*timer)(void *arg) __used,
+					   void *arg __used, int delay_secs __used);
 {
 	return 0;
 }
@@ -104,12 +120,15 @@ static inline int hist_entry__tui_annotate(struct hist_entry *self __used,
 #define KEY_RIGHT -2
 #else
 #include <newt.h>
-int hist_entry__tui_annotate(struct hist_entry *self, int evidx);
+int hist_entry__tui_annotate(struct hist_entry *he, int evidx, int nr_events,
+			     void(*timer)(void *arg), void *arg, int delay_secs);
 
 #define KEY_LEFT NEWT_KEY_LEFT
 #define KEY_RIGHT NEWT_KEY_RIGHT
 
-int perf_evlist__tui_browse_hists(struct perf_evlist *evlist, const char *help);
+int perf_evlist__tui_browse_hists(struct perf_evlist *evlist, const char *help,
+				  void(*timer)(void *arg), void *arg,
+				  int refresh);
 #endif
 
 unsigned int hists__sort_list_width(struct hists *self);

tools/perf/util/session.c

@@ -1326,3 +1326,22 @@ int perf_session__cpu_bitmap(struct perf_session *session,
 
 	return 0;
 }
+
+void perf_session__fprintf_info(struct perf_session *session, FILE *fp,
+				bool full)
+{
+	struct stat st;
+	int ret;
+
+	if (session == NULL || fp == NULL)
+		return;
+
+	ret = fstat(session->fd, &st);
+	if (ret == -1)
+		return;
+
+	fprintf(fp, "# ========\n");
+	fprintf(fp, "# captured on: %s", ctime(&st.st_ctime));
+	perf_header__fprintf_info(session, fp, full);
+	fprintf(fp, "# ========\n#\n");
+}

tools/perf/util/session.h

@@ -177,4 +177,5 @@ void perf_session__print_ip(union perf_event *event,
 int perf_session__cpu_bitmap(struct perf_session *session,
 			     const char *cpu_list, unsigned long *cpu_bitmap);
 
+void perf_session__fprintf_info(struct perf_session *s, FILE *fp, bool full);
 #endif /* __PERF_SESSION_H */

tools/perf/util/sort.h

@@ -45,6 +45,7 @@ extern enum sort_type sort__first_dimension;
  * @nr_rows - rows expanded in callchain, recalculated on folding/unfolding
  */
 struct hist_entry {
+	struct rb_node		rb_node_in;
 	struct rb_node		rb_node;
 	u64			period;
 	u64			period_sys;

tools/perf/util/symbol.c

@@ -46,7 +46,6 @@ struct symbol_conf symbol_conf = {
 	.exclude_other	  = true,
 	.use_modules	  = true,
 	.try_vmlinux_path = true,
-	.annotate_asm_raw = true,
 	.annotate_src	  = true,
 	.symfs            = "",
 };

tools/perf/util/symbol.h

@@ -72,6 +72,7 @@ struct symbol_conf {
 			use_modules,
 			sort_by_name,
 			show_nr_samples,
+			show_total_period,
 			use_callchain,
 			exclude_other,
 			show_cpu_utilization,

tools/perf/util/top.c

@@ -15,52 +15,6 @@
 #include "top.h"
 #include <inttypes.h>
 
-/*
- * Ordering weight: count-1 * count-2 * ... / count-n
- */
-static double sym_weight(const struct sym_entry *sym, struct perf_top *top)
-{
-	double weight = sym->snap_count;
-	int counter;
-
-	if (!top->display_weighted)
-		return weight;
-
-	for (counter = 1; counter < top->evlist->nr_entries - 1; counter++)
-		weight *= sym->count[counter];
-
-	weight /= (sym->count[counter] + 1);
-
-	return weight;
-}
-
-static void perf_top__remove_active_sym(struct perf_top *top, struct sym_entry *syme)
-{
-	pthread_mutex_lock(&top->active_symbols_lock);
-	list_del_init(&syme->node);
-	pthread_mutex_unlock(&top->active_symbols_lock);
-}
-
-static void rb_insert_active_sym(struct rb_root *tree, struct sym_entry *se)
-{
-	struct rb_node **p = &tree->rb_node;
-	struct rb_node *parent = NULL;
-	struct sym_entry *iter;
-
-	while (*p != NULL) {
-		parent = *p;
-		iter = rb_entry(parent, struct sym_entry, rb_node);
-
-		if (se->weight > iter->weight)
-			p = &(*p)->rb_left;
-		else
-			p = &(*p)->rb_right;
-	}
-
-	rb_link_node(&se->rb_node, parent, p);
-	rb_insert_color(&se->rb_node, tree);
-}
-
 #define SNPRINTF(buf, size, fmt, args...) \
 ({ \
 	size_t r = snprintf(buf, size, fmt, ## args); \
@@ -69,7 +23,6 @@ static void rb_insert_active_sym(struct rb_root *tree, struct sym_entry *se)
 
 size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size)
 {
-	struct perf_evsel *counter;
 	float samples_per_sec = top->samples / top->delay_secs;
 	float ksamples_per_sec = top->kernel_samples / top->delay_secs;
 	float esamples_percent = (100.0 * top->exact_samples) / top->samples;
@@ -104,7 +57,7 @@ size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size)
 			       esamples_percent);
 	}
 
-	if (top->evlist->nr_entries == 1 || !top->display_weighted) {
+	if (top->evlist->nr_entries == 1) {
 		struct perf_evsel *first;
 		first = list_entry(top->evlist->entries.next, struct perf_evsel, node);
 		ret += SNPRINTF(bf + ret, size - ret, "%" PRIu64 "%s ",
@@ -112,27 +65,7 @@ size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size)
 				top->freq ? "Hz" : "");
 	}
 
-	if (!top->display_weighted) {
-		ret += SNPRINTF(bf + ret, size - ret, "%s",
-				event_name(top->sym_evsel));
-	} else {
-		/*
-		 * Don't let events eat all the space. Leaving 30 bytes
-		 * for the rest should be enough.
-		 */
-		size_t last_pos = size - 30;
-
-		list_for_each_entry(counter, &top->evlist->entries, node) {
-			ret += SNPRINTF(bf + ret, size - ret, "%s%s",
-					counter->idx ? "/" : "",
-					event_name(counter));
-			if (ret > last_pos) {
-				sprintf(bf + last_pos - 3, "..");
-				ret = last_pos - 1;
-				break;
-			}
-		}
-	}
+	ret += SNPRINTF(bf + ret, size - ret, "%s", event_name(top->sym_evsel));
 
 	ret += SNPRINTF(bf + ret, size - ret, "], ");
 
@@ -166,73 +99,3 @@ void perf_top__reset_sample_counters(struct perf_top *top)
 	top->exact_samples = top->guest_kernel_samples =
 	top->guest_us_samples = 0;
 }
-
-float perf_top__decay_samples(struct perf_top *top, struct rb_root *root)
-{
-	struct sym_entry *syme, *n;
-	float sum_ksamples = 0.0;
-	int snap = !top->display_weighted ? top->sym_evsel->idx : 0, j;
-
-	/* Sort the active symbols */
-	pthread_mutex_lock(&top->active_symbols_lock);
-	syme = list_entry(top->active_symbols.next, struct sym_entry, node);
-	pthread_mutex_unlock(&top->active_symbols_lock);
-
-	top->rb_entries = 0;
-	list_for_each_entry_safe_from(syme, n, &top->active_symbols, node) {
-		syme->snap_count = syme->count[snap];
-		if (syme->snap_count != 0) {
-
-			if ((top->hide_user_symbols &&
-			     syme->map->dso->kernel == DSO_TYPE_USER) ||
-			    (top->hide_kernel_symbols &&
-			     syme->map->dso->kernel == DSO_TYPE_KERNEL)) {
-				perf_top__remove_active_sym(top, syme);
-				continue;
-			}
-			syme->weight = sym_weight(syme, top);
-
-			if ((int)syme->snap_count >= top->count_filter) {
-				rb_insert_active_sym(root, syme);
-				++top->rb_entries;
-			}
-			sum_ksamples += syme->snap_count;
-
-			for (j = 0; j < top->evlist->nr_entries; j++)
-				syme->count[j] = top->zero ? 0 : syme->count[j] * 7 / 8;
-		} else
-			perf_top__remove_active_sym(top, syme);
-	}
-
-	return sum_ksamples;
-}
-
-/*
- * Find the longest symbol name that will be displayed
- */
-void perf_top__find_widths(struct perf_top *top, struct rb_root *root,
-			   int *dso_width, int *dso_short_width, int *sym_width)
-{
-	struct rb_node *nd;
-	int printed = 0;
-
-	*sym_width = *dso_width = *dso_short_width = 0;
-
-	for (nd = rb_first(root); nd; nd = rb_next(nd)) {
-		struct sym_entry *syme = rb_entry(nd, struct sym_entry, rb_node);
-		struct symbol *sym = sym_entry__symbol(syme);
-
-		if (++printed > top->print_entries ||
-		    (int)syme->snap_count < top->count_filter)
-			continue;
-
-		if (syme->map->dso->long_name_len > *dso_width)
-			*dso_width = syme->map->dso->long_name_len;
-
-		if (syme->map->dso->short_name_len > *dso_short_width)
-			*dso_short_width = syme->map->dso->short_name_len;
-
-		if (sym->namelen > *sym_width)
-			*sym_width = sym->namelen;
-	}
-}

tools/perf/util/top.h

@@ -4,64 +4,32 @@
 #include "types.h"
 #include "../perf.h"
 #include <stddef.h>
-#include <pthread.h>
-#include <linux/list.h>
-#include <linux/rbtree.h>
 
 struct perf_evlist;
 struct perf_evsel;
 struct perf_session;
 
-struct sym_entry {
-	struct rb_node		rb_node;
-	struct list_head	node;
-	unsigned long		snap_count;
-	double			weight;
-	struct map		*map;
-	unsigned long		count[0];
-};
-
-static inline struct symbol *sym_entry__symbol(struct sym_entry *self)
-{
-       return ((void *)self) + symbol_conf.priv_size;
-}
-
 struct perf_top {
 	struct perf_evlist *evlist;
 	/*
 	 * Symbols will be added here in perf_event__process_sample and will
 	 * get out after decayed.
 	 */
-	struct list_head   active_symbols;
-	pthread_mutex_t	   active_symbols_lock;
-	pthread_cond_t	   active_symbols_cond;
 	u64		   samples;
 	u64		   kernel_samples, us_samples;
 	u64		   exact_samples;
 	u64		   guest_us_samples, guest_kernel_samples;
 	u64		   total_lost_warned;
 	int		   print_entries, count_filter, delay_secs;
-	int		   display_weighted, freq, rb_entries;
+	int		   freq;
 	pid_t		   target_pid, target_tid;
 	bool		   hide_kernel_symbols, hide_user_symbols, zero;
 	const char	   *cpu_list;
-	struct sym_entry   *sym_filter_entry;
+	struct hist_entry  *sym_filter_entry;
 	struct perf_evsel  *sym_evsel;
 	struct perf_session *session;
 };
 
 size_t perf_top__header_snprintf(struct perf_top *top, char *bf, size_t size);
 void perf_top__reset_sample_counters(struct perf_top *top);
-float perf_top__decay_samples(struct perf_top *top, struct rb_root *root);
-void perf_top__find_widths(struct perf_top *top, struct rb_root *root,
-			   int *dso_width, int *dso_short_width, int *sym_width);
-
-#ifdef NO_NEWT_SUPPORT
-static inline int perf_top__tui_browser(struct perf_top *top __used)
-{
-	return 0;
-}
-#else
-int perf_top__tui_browser(struct perf_top *top);
-#endif
 #endif /* __PERF_TOP_H */

tools/perf/util/ui/browsers/annotate.c

@@ -20,6 +20,7 @@ struct annotate_browser {
 	struct ui_browser b;
 	struct rb_root	  entries;
 	struct rb_node	  *curr_hot;
+	struct objdump_line *selection;
 };
 
 struct objdump_line_rb_node {
@@ -36,6 +37,7 @@ struct objdump_line_rb_node *objdump_line__rb(struct objdump_line *self)
 
 static void annotate_browser__write(struct ui_browser *self, void *entry, int row)
 {
+	struct annotate_browser *ab = container_of(self, struct annotate_browser, b);
 	struct objdump_line *ol = rb_entry(entry, struct objdump_line, node);
 	bool current_entry = ui_browser__is_current_entry(self, row);
 	int width = self->width;
@@ -58,6 +60,8 @@ static void annotate_browser__write(struct ui_browser *self, void *entry, int ro
 
 	if (!current_entry)
 		ui_browser__set_color(self, HE_COLORSET_CODE);
+	else
+		ab->selection = ol;
 }
 
 static double objdump_line__calc_percent(struct objdump_line *self,
@@ -141,7 +145,8 @@ static void annotate_browser__set_top(struct annotate_browser *self,
 static void annotate_browser__calc_percent(struct annotate_browser *browser,
 					   int evidx)
 {
-	struct symbol *sym = browser->b.priv;
+	struct map_symbol *ms = browser->b.priv;
+	struct symbol *sym = ms->sym;
 	struct annotation *notes = symbol__annotation(sym);
 	struct objdump_line *pos;
 
@@ -164,21 +169,23 @@ static void annotate_browser__calc_percent(struct annotate_browser *browser,
 }
 
 static int annotate_browser__run(struct annotate_browser *self, int evidx,
-				 int refresh)
+				 int nr_events, void(*timer)(void *arg),
+				 void *arg, int delay_secs)
 {
 	struct rb_node *nd = NULL;
-	struct symbol *sym = self->b.priv;
+	struct map_symbol *ms = self->b.priv;
+	struct symbol *sym = ms->sym;
 	/*
 	 * RIGHT To allow builtin-annotate to cycle thru multiple symbols by
 	 * examining the exit key for this function.
 	 */
 	int exit_keys[] = { 'H', NEWT_KEY_TAB, NEWT_KEY_UNTAB,
-			    NEWT_KEY_RIGHT, 0 };
+			    NEWT_KEY_RIGHT, NEWT_KEY_ENTER, 0 };
 	int key;
 
 	if (ui_browser__show(&self->b, sym->name,
-			     "<-, -> or ESC: exit, TAB/shift+TAB: "
-			     "cycle hottest lines, H: Hottest") < 0)
+			     "<- or ESC: exit, TAB/shift+TAB: "
+			     "cycle hottest lines, H: Hottest, -> Line action") < 0)
 		return -1;
 
 	ui_browser__add_exit_keys(&self->b, exit_keys);
@@ -189,13 +196,13 @@ static int annotate_browser__run(struct annotate_browser *self, int evidx,
 
 	nd = self->curr_hot;
 
-	if (refresh != 0)
-		newtFormSetTimer(self->b.form, refresh);
+	if (delay_secs != 0)
+		newtFormSetTimer(self->b.form, delay_secs * 1000);
 
 	while (1) {
 		key = ui_browser__run(&self->b);
 
-		if (refresh != 0) {
+		if (delay_secs != 0) {
 			annotate_browser__calc_percent(self, evidx);
 			/*
 			 * Current line focus got out of the list of most active
@@ -212,7 +219,10 @@ static int annotate_browser__run(struct annotate_browser *self, int evidx,
  			 * FIXME we need to check if it was
  			 * es.reason == NEWT_EXIT_TIMER
  			 */
-			if (refresh != 0)
+			if (timer != NULL)
+				timer(arg);
+
+			if (delay_secs != 0)
 				symbol__annotate_decay_histogram(sym, evidx);
 			continue;
 		case NEWT_KEY_TAB:
@@ -234,6 +244,57 @@ static int annotate_browser__run(struct annotate_browser *self, int evidx,
 		case 'H':
 			nd = self->curr_hot;
 			break;
+		case NEWT_KEY_ENTER:
+		case NEWT_KEY_RIGHT:
+			if (self->selection == NULL) {
+				ui_helpline__puts("Huh? No selection. Report to linux-kernel@vger.kernel.org");
+				continue;
+			}
+
+			if (self->selection->offset == -1) {
+				ui_helpline__puts("Actions are only available for assembly lines.");
+				continue;
+			} else {
+				char *s = strstr(self->selection->line, "callq ");
+				struct annotation *notes;
+				struct symbol *target;
+				u64 ip;
+
+				if (s == NULL) {
+					ui_helpline__puts("Actions are only available for the 'callq' instruction.");
+					continue;
+				}
+
+				s = strchr(s, ' ');
+				if (s++ == NULL) {
+					ui_helpline__puts("Invallid callq instruction.");
+					continue;
+				}
+
+				ip = strtoull(s, NULL, 16);
+				ip = ms->map->map_ip(ms->map, ip);
+				target = map__find_symbol(ms->map, ip, NULL);
+				if (target == NULL) {
+					ui_helpline__puts("The called function was not found.");
+					continue;
+				}
+
+				notes = symbol__annotation(target);
+				pthread_mutex_lock(&notes->lock);
+
+				if (notes->src == NULL &&
+				    symbol__alloc_hist(target, nr_events) < 0) {
+					pthread_mutex_unlock(&notes->lock);
+					ui__warning("Not enough memory for annotating '%s' symbol!\n",
+						    target->name);
+					continue;
+				}
+
+				pthread_mutex_unlock(&notes->lock);
+				symbol__tui_annotate(target, ms->map, evidx, nr_events,
+						     timer, arg, delay_secs);
+			}
+			break;
 		default:
 			goto out;
 		}
@@ -246,22 +307,29 @@ static int annotate_browser__run(struct annotate_browser *self, int evidx,
 	return key;
 }
 
-int hist_entry__tui_annotate(struct hist_entry *he, int evidx)
+int hist_entry__tui_annotate(struct hist_entry *he, int evidx, int nr_events,
+			     void(*timer)(void *arg), void *arg, int delay_secs)
 {
-	return symbol__tui_annotate(he->ms.sym, he->ms.map, evidx, 0);
+	return symbol__tui_annotate(he->ms.sym, he->ms.map, evidx, nr_events,
+				    timer, arg, delay_secs);
 }
 
 int symbol__tui_annotate(struct symbol *sym, struct map *map, int evidx,
-			 int refresh)
+			 int nr_events, void(*timer)(void *arg), void *arg,
+			 int delay_secs)
 {
 	struct objdump_line *pos, *n;
 	struct annotation *notes;
+	struct map_symbol ms = {
+		.map = map,
+		.sym = sym,
+	};
 	struct annotate_browser browser = {
 		.b = {
 			.refresh = ui_browser__list_head_refresh,
 			.seek	 = ui_browser__list_head_seek,
 			.write	 = annotate_browser__write,
-			.priv	 = sym,
+			.priv	 = &ms,
 		},
 	};
 	int ret;
@@ -293,7 +361,8 @@ int symbol__tui_annotate(struct symbol *sym, struct map *map, int evidx,
 
 	browser.b.entries = &notes->src->source,
 	browser.b.width += 18; /* Percentage */
-	ret = annotate_browser__run(&browser, evidx, refresh);
+	ret = annotate_browser__run(&browser, evidx, nr_events,
+				    timer, arg, delay_secs);
 	list_for_each_entry_safe(pos, n, &notes->src->source, node) {
 		list_del(&pos->node);
 		objdump_line__free(pos);

tools/perf/util/ui/browsers/hists.c

@@ -24,8 +24,15 @@ struct hist_browser {
 	struct hists	    *hists;
 	struct hist_entry   *he_selection;
 	struct map_symbol   *selection;
+	const struct thread *thread_filter;
+	const struct dso    *dso_filter;
+	bool		     has_symbols;
 };
 
+static int hists__browser_title(struct hists *self, char *bf, size_t size,
+				const char *ev_name, const struct dso *dso,
+				const struct thread *thread);
+
 static void hist_browser__refresh_dimensions(struct hist_browser *self)
 {
 	/* 3 == +/- toggle symbol before actual hist_entry rendering */
@@ -290,28 +297,53 @@ static void hist_browser__set_folding(struct hist_browser *self, bool unfold)
 	ui_browser__reset_index(&self->b);
 }
 
-static int hist_browser__run(struct hist_browser *self, const char *title)
+static int hist_browser__run(struct hist_browser *self, const char *ev_name,
+			     void(*timer)(void *arg), void *arg, int delay_secs)
 {
 	int key;
-	int exit_keys[] = { 'a', '?', 'h', 'C', 'd', 'D', 'E', 't',
-			    NEWT_KEY_ENTER, NEWT_KEY_RIGHT, NEWT_KEY_LEFT,
-			    NEWT_KEY_TAB, NEWT_KEY_UNTAB, 0, };
+	int delay_msecs = delay_secs * 1000;
+	char title[160];
+	int sym_exit_keys[] = { 'a', 'h', 'C', 'd', 'E', 't', 0, };
+	int exit_keys[] = { '?', 'h', 'D', NEWT_KEY_LEFT, NEWT_KEY_RIGHT,
+			    NEWT_KEY_TAB, NEWT_KEY_UNTAB, NEWT_KEY_ENTER, 0, };
 
 	self->b.entries = &self->hists->entries;
 	self->b.nr_entries = self->hists->nr_entries;
 
 	hist_browser__refresh_dimensions(self);
+	hists__browser_title(self->hists, title, sizeof(title), ev_name,
+			     self->dso_filter, self->thread_filter);
 
 	if (ui_browser__show(&self->b, title,
 			     "Press '?' for help on key bindings") < 0)
 		return -1;
 
+	if (timer != NULL)
+		newtFormSetTimer(self->b.form, delay_msecs);
+
 	ui_browser__add_exit_keys(&self->b, exit_keys);
+	if (self->has_symbols)
+		ui_browser__add_exit_keys(&self->b, sym_exit_keys);
 
 	while (1) {
 		key = ui_browser__run(&self->b);
 
 		switch (key) {
+		case -1:
+			/* FIXME we need to check if it was es.reason == NEWT_EXIT_TIMER */
+			timer(arg);
+			/*
+			 * The timer may have changed the number of entries.
+			 * XXX: Find better way to keep this in synch, probably
+			 * removing this timer function altogether and just sync
+			 * using the hists->lock...
+			 */
+			self->b.nr_entries = self->hists->nr_entries;
+			hists__browser_title(self->hists, title, sizeof(title),
+					     ev_name, self->dso_filter,
+					     self->thread_filter);
+			ui_browser__show_title(&self->b, title);
+			continue;
 		case 'D': { /* Debug */
 			static int seq;
 			struct hist_entry *h = rb_entry(self->b.top,
@@ -761,6 +793,7 @@ static struct hist_browser *hist_browser__new(struct hists *hists)
 		self->hists = hists;
 		self->b.refresh = hist_browser__refresh;
 		self->b.seek = ui_browser__hists_seek;
+		self->has_symbols = sort_sym.list.next != NULL;
 	}
 
 	return self;
@@ -803,16 +836,15 @@ static int hists__browser_title(struct hists *self, char *bf, size_t size,
 	return printed;
 }
 
-static int perf_evsel__hists_browse(struct perf_evsel *evsel,
+static int perf_evsel__hists_browse(struct perf_evsel *evsel, int nr_events,
 				    const char *helpline, const char *ev_name,
-				    bool left_exits)
+				    bool left_exits,
+				    void(*timer)(void *arg), void *arg,
+				    int delay_secs)
 {
 	struct hists *self = &evsel->hists;
 	struct hist_browser *browser = hist_browser__new(self);
 	struct pstack *fstack;
-	const struct thread *thread_filter = NULL;
-	const struct dso *dso_filter = NULL;
-	char msg[160];
 	int key = -1;
 
 	if (browser == NULL)
@@ -824,8 +856,6 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel,
 
 	ui_helpline__push(helpline);
 
-	hists__browser_title(self, msg, sizeof(msg), ev_name,
-			     dso_filter, thread_filter);
 	while (1) {
 		const struct thread *thread = NULL;
 		const struct dso *dso = NULL;
@@ -834,7 +864,7 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel,
 		    annotate = -2, zoom_dso = -2, zoom_thread = -2,
 		    browse_map = -2;
 
-		key = hist_browser__run(browser, msg);
+		key = hist_browser__run(browser, ev_name, timer, arg, delay_secs);
 
 		if (browser->he_selection != NULL) {
 			thread = hist_browser__selected_thread(browser);
@@ -862,16 +892,17 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel,
 		case NEWT_KEY_F1:
 		case 'h':
 		case '?':
-			ui__help_window("->        Zoom into DSO/Threads & Annotate current symbol\n"
+			ui__help_window("h/?/F1    Show this window\n"
+					"TAB/UNTAB Switch events\n"
+					"q/CTRL+C  Exit browser\n\n"
+					"For symbolic views (--sort has sym):\n\n"
+					"->        Zoom into DSO/Threads & Annotate current symbol\n"
 					"<-        Zoom out\n"
 					"a         Annotate current symbol\n"
-					"h/?/F1    Show this window\n"
 					"C         Collapse all callchains\n"
 					"E         Expand all callchains\n"
 					"d         Zoom into current DSO\n"
-					"t         Zoom into current Thread\n"
-					"TAB/UNTAB Switch events\n"
-					"q/CTRL+C  Exit browser");
+					"t         Zoom into current Thread\n");
 			continue;
 		case NEWT_KEY_ENTER:
 		case NEWT_KEY_RIGHT:
@@ -889,9 +920,9 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel,
 				continue;
 			}
 			top = pstack__pop(fstack);
-			if (top == &dso_filter)
+			if (top == &browser->dso_filter)
 				goto zoom_out_dso;
-			if (top == &thread_filter)
+			if (top == &browser->thread_filter)
 				goto zoom_out_thread;
 			continue;
 		}
@@ -904,6 +935,9 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel,
 			goto out_free_stack;
 		}
 
+		if (!browser->has_symbols)
+			goto add_exit_option;
+
 		if (browser->selection != NULL &&
 		    browser->selection->sym != NULL &&
 		    !browser->selection->map->dso->annotate_warned &&
@@ -913,14 +947,14 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel,
 
 		if (thread != NULL &&
 		    asprintf(&options[nr_options], "Zoom %s %s(%d) thread",
-			     (thread_filter ? "out of" : "into"),
+			     (browser->thread_filter ? "out of" : "into"),
 			     (thread->comm_set ? thread->comm : ""),
 			     thread->pid) > 0)
 			zoom_thread = nr_options++;
 
 		if (dso != NULL &&
 		    asprintf(&options[nr_options], "Zoom %s %s DSO",
-			     (dso_filter ? "out of" : "into"),
+			     (browser->dso_filter ? "out of" : "into"),
 			     (dso->kernel ? "the Kernel" : dso->short_name)) > 0)
 			zoom_dso = nr_options++;
 
@@ -928,7 +962,7 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel,
 		    browser->selection->map != NULL &&
 		    asprintf(&options[nr_options], "Browse map details") > 0)
 			browse_map = nr_options++;
-
+add_exit_option:
 		options[nr_options++] = (char *)"Exit";
 
 		choice = ui__popup_menu(nr_options, options);
@@ -949,45 +983,42 @@ static int perf_evsel__hists_browse(struct perf_evsel *evsel,
 			if (he == NULL)
 				continue;
 
-			hist_entry__tui_annotate(he, evsel->idx);
+			hist_entry__tui_annotate(he, evsel->idx, nr_events,
+						 timer, arg, delay_secs);
 		} else if (choice == browse_map)
 			map__browse(browser->selection->map);
 		else if (choice == zoom_dso) {
 zoom_dso:
-			if (dso_filter) {
-				pstack__remove(fstack, &dso_filter);
+			if (browser->dso_filter) {
+				pstack__remove(fstack, &browser->dso_filter);
 zoom_out_dso:
 				ui_helpline__pop();
-				dso_filter = NULL;
+				browser->dso_filter = NULL;
 			} else {
 				if (dso == NULL)
 					continue;
 				ui_helpline__fpush("To zoom out press <- or -> + \"Zoom out of %s DSO\"",
 						   dso->kernel ? "the Kernel" : dso->short_name);
-				dso_filter = dso;
-				pstack__push(fstack, &dso_filter);
+				browser->dso_filter = dso;
+				pstack__push(fstack, &browser->dso_filter);
 			}
-			hists__filter_by_dso(self, dso_filter);
-			hists__browser_title(self, msg, sizeof(msg), ev_name,
-					     dso_filter, thread_filter);
+			hists__filter_by_dso(self, browser->dso_filter);
 			hist_browser__reset(browser);
 		} else if (choice == zoom_thread) {
 zoom_thread:
-			if (thread_filter) {
-				pstack__remove(fstack, &thread_filter);
+			if (browser->thread_filter) {
+				pstack__remove(fstack, &browser->thread_filter);
 zoom_out_thread:
 				ui_helpline__pop();
-				thread_filter = NULL;
+				browser->thread_filter = NULL;
 			} else {
 				ui_helpline__fpush("To zoom out press <- or -> + \"Zoom out of %s(%d) thread\"",
 						   thread->comm_set ? thread->comm : "",
 						   thread->pid);
-				thread_filter = thread;
-				pstack__push(fstack, &thread_filter);
+				browser->thread_filter = thread;
+				pstack__push(fstack, &browser->thread_filter);
 			}
-			hists__filter_by_thread(self, thread_filter);
-			hists__browser_title(self, msg, sizeof(msg), ev_name,
-					     dso_filter, thread_filter);
+			hists__filter_by_thread(self, browser->thread_filter);
 			hist_browser__reset(browser);
 		}
 	}
@@ -1026,9 +1057,12 @@ static void perf_evsel_menu__write(struct ui_browser *browser,
 		menu->selection = evsel;
 }
 
-static int perf_evsel_menu__run(struct perf_evsel_menu *menu, const char *help)
+static int perf_evsel_menu__run(struct perf_evsel_menu *menu,
+				int nr_events, const char *help,
+				void(*timer)(void *arg), void *arg, int delay_secs)
 {
 	int exit_keys[] = { NEWT_KEY_ENTER, NEWT_KEY_RIGHT, 0, };
+	int delay_msecs = delay_secs * 1000;
 	struct perf_evlist *evlist = menu->b.priv;
 	struct perf_evsel *pos;
 	const char *ev_name, *title = "Available samples";
@@ -1038,20 +1072,30 @@ static int perf_evsel_menu__run(struct perf_evsel_menu *menu, const char *help)
 			     "ESC: exit, ENTER|->: Browse histograms") < 0)
 		return -1;
 
+	if (timer != NULL)
+		newtFormSetTimer(menu->b.form, delay_msecs);
+
 	ui_browser__add_exit_keys(&menu->b, exit_keys);
 
 	while (1) {
 		key = ui_browser__run(&menu->b);
 
 		switch (key) {
+		case -1:
+			/* FIXME we need to check if it was es.reason == NEWT_EXIT_TIMER */
+			timer(arg);
+			continue;
 		case NEWT_KEY_RIGHT:
 		case NEWT_KEY_ENTER:
 			if (!menu->selection)
 				continue;
 			pos = menu->selection;
+			perf_evlist__set_selected(evlist, pos);
 browse_hists:
 			ev_name = event_name(pos);
-			key = perf_evsel__hists_browse(pos, help, ev_name, true);
+			key = perf_evsel__hists_browse(pos, nr_events, help,
+						       ev_name, true, timer,
+						       arg, delay_secs);
 			ui_browser__show_title(&menu->b, title);
 			break;
 		case NEWT_KEY_LEFT:
@@ -1070,12 +1114,14 @@ static int perf_evsel_menu__run(struct perf_evsel_menu *menu, const char *help)
 				pos = list_entry(evlist->entries.next, struct perf_evsel, node);
 			else
 				pos = list_entry(pos->node.next, struct perf_evsel, node);
+			perf_evlist__set_selected(evlist, pos);
 			goto browse_hists;
 		case NEWT_KEY_UNTAB:
 			if (pos->node.prev == &evlist->entries)
 				pos = list_entry(evlist->entries.prev, struct perf_evsel, node);
 			else
 				pos = list_entry(pos->node.prev, struct perf_evsel, node);
+			perf_evlist__set_selected(evlist, pos);
 			goto browse_hists;
 		case 'q':
 		case CTRL('c'):
@@ -1091,7 +1137,9 @@ static int perf_evsel_menu__run(struct perf_evsel_menu *menu, const char *help)
 }
 
 static int __perf_evlist__tui_browse_hists(struct perf_evlist *evlist,
-					   const char *help)
+					   const char *help,
+					   void(*timer)(void *arg), void *arg,
+					   int delay_secs)
 {
 	struct perf_evsel *pos;
 	struct perf_evsel_menu menu = {
@@ -1121,18 +1169,24 @@ static int __perf_evlist__tui_browse_hists(struct perf_evlist *evlist,
 			pos->name = strdup(ev_name);
 	}
 
-	return perf_evsel_menu__run(&menu, help);
+	return perf_evsel_menu__run(&menu, evlist->nr_entries, help, timer,
+				    arg, delay_secs);
 }
 
-int perf_evlist__tui_browse_hists(struct perf_evlist *evlist, const char *help)
+int perf_evlist__tui_browse_hists(struct perf_evlist *evlist, const char *help,
+				  void(*timer)(void *arg), void *arg,
+				  int delay_secs)
 {
 
 	if (evlist->nr_entries == 1) {
 		struct perf_evsel *first = list_entry(evlist->entries.next,
 						      struct perf_evsel, node);
 		const char *ev_name = event_name(first);
-		return perf_evsel__hists_browse(first, help, ev_name, false);
+		return perf_evsel__hists_browse(first, evlist->nr_entries, help,
+						ev_name, false, timer, arg,
+						delay_secs);
 	}
 
-	return __perf_evlist__tui_browse_hists(evlist, help);
+	return __perf_evlist__tui_browse_hists(evlist, help,
+					       timer, arg, delay_secs);
 }

tools/perf/util/ui/browsers/top.c

-/*
- * Copyright (C) 2011, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
- *
- * Parts came from builtin-{top,stat,record}.c, see those files for further
- * copyright notes.
- *
- * Released under the GPL v2. (and only v2, not any later version)
- */
-#include "../browser.h"
-#include "../../annotate.h"
-#include "../helpline.h"
-#include "../libslang.h"
-#include "../util.h"
-#include "../ui.h"
-#include "../../evlist.h"
-#include "../../hist.h"
-#include "../../sort.h"
-#include "../../symbol.h"
-#include "../../session.h"
-#include "../../top.h"
-
-struct perf_top_browser {
-	struct ui_browser b;
-	struct rb_root	  root;
-	struct sym_entry  *selection;
-	float		  sum_ksamples;
-	int		  dso_width;
-	int		  dso_short_width;
-	int		  sym_width;
-};
-
-static void perf_top_browser__write(struct ui_browser *browser, void *entry, int row)
-{
-	struct perf_top_browser *top_browser = container_of(browser, struct perf_top_browser, b);
-	struct sym_entry *syme = rb_entry(entry, struct sym_entry, rb_node);
-	bool current_entry = ui_browser__is_current_entry(browser, row);
-	struct symbol *symbol = sym_entry__symbol(syme);
-	struct perf_top *top = browser->priv;
-	int width = browser->width;
-	double pcnt;
-
-	pcnt = 100.0 - (100.0 * ((top_browser->sum_ksamples - syme->snap_count) /
-				 top_browser->sum_ksamples));
-	ui_browser__set_percent_color(browser, pcnt, current_entry);
-
-	if (top->evlist->nr_entries == 1 || !top->display_weighted) {
-		slsmg_printf("%20.2f ", syme->weight);
-		width -= 21;
-	} else {
-		slsmg_printf("%9.1f %10ld ", syme->weight, syme->snap_count);
-		width -= 20;
-	}
-
-	slsmg_printf("%4.1f%%", pcnt);
-	width -= 7;
-
-	if (verbose) {
-		slsmg_printf(" %016" PRIx64, symbol->start);
-		width -= 17;
-	}
-
-	slsmg_printf(" %-*.*s ", top_browser->sym_width, top_browser->sym_width,
-		     symbol->name);
-	width -= top_browser->sym_width;
-	slsmg_write_nstring(width >= syme->map->dso->long_name_len ?
-				syme->map->dso->long_name :
-				syme->map->dso->short_name, width);
-
-	if (current_entry)
-		top_browser->selection = syme;
-}
-
-static void perf_top_browser__update_rb_tree(struct perf_top_browser *browser)
-{
-	struct perf_top *top = browser->b.priv;
-	u64 top_idx = browser->b.top_idx;
-
-	browser->root = RB_ROOT;
-	browser->b.top = NULL;
-	browser->sum_ksamples = perf_top__decay_samples(top, &browser->root);
-	/*
- 	 * No active symbols
- 	 */
-	if (top->rb_entries == 0)
-		return;
-
-	perf_top__find_widths(top, &browser->root, &browser->dso_width,
-			      &browser->dso_short_width,
-                              &browser->sym_width);
-	if (browser->sym_width + browser->dso_width > browser->b.width - 29) {
-		browser->dso_width = browser->dso_short_width;
-		if (browser->sym_width + browser->dso_width > browser->b.width - 29)
-			browser->sym_width = browser->b.width - browser->dso_width - 29;
-	}
-
-	/*
-	 * Adjust the ui_browser indexes since the entries in the browser->root
-	 * rb_tree may have changed, then seek it from start, so that we get a
-	 * possible new top of the screen.
- 	 */
-	browser->b.nr_entries = top->rb_entries;
-
-	if (top_idx >= browser->b.nr_entries) {
-		if (browser->b.height >= browser->b.nr_entries)
-			top_idx = browser->b.nr_entries - browser->b.height;
-		else
-			top_idx = 0;
-	}
-
-	if (browser->b.index >= top_idx + browser->b.height)
-		browser->b.index = top_idx + browser->b.index - browser->b.top_idx;
-
-	if (browser->b.index >= browser->b.nr_entries)
-		browser->b.index = browser->b.nr_entries - 1;
-
-	browser->b.top_idx = top_idx;
-	browser->b.seek(&browser->b, top_idx, SEEK_SET);
-}
-
-static void perf_top_browser__annotate(struct perf_top_browser *browser)
-{
-	struct sym_entry *syme = browser->selection;
-	struct symbol *sym = sym_entry__symbol(syme);
-	struct annotation *notes = symbol__annotation(sym);
-	struct perf_top *top = browser->b.priv;
-
-	if (notes->src != NULL)
-		goto do_annotation;
-
-	pthread_mutex_lock(&notes->lock);
-
-	top->sym_filter_entry = NULL;
-
-	if (symbol__alloc_hist(sym, top->evlist->nr_entries) < 0) {
-		pr_err("Not enough memory for annotating '%s' symbol!\n",
-		       sym->name);
-		pthread_mutex_unlock(&notes->lock);
-		return;
-	}
-
-	top->sym_filter_entry = syme;
-
-	pthread_mutex_unlock(&notes->lock);
-do_annotation:
-	symbol__tui_annotate(sym, syme->map, 0, top->delay_secs * 1000);
-}
-
-static void perf_top_browser__warn_lost(struct perf_top_browser *browser)
-{
-	struct perf_top *top = browser->b.priv;
-	char msg[128];
-	int len;
-
-	top->total_lost_warned = top->session->hists.stats.total_lost;
-	pthread_mutex_lock(&ui__lock);
-	ui_browser__set_color(&browser->b, HE_COLORSET_TOP);
-	len = snprintf(msg, sizeof(msg),
-		      " WARNING: LOST %" PRIu64 " events, Check IO/CPU overload",
-		      top->total_lost_warned);
-	if (len > browser->b.width)
-		len = browser->b.width;
-	SLsmg_gotorc(0, browser->b.width - len);
-	slsmg_write_nstring(msg, len);
-	pthread_mutex_unlock(&ui__lock);
-}
-
-static int perf_top_browser__run(struct perf_top_browser *browser)
-{
-	int key;
-	char title[160];
-	struct perf_top *top = browser->b.priv;
-	int delay_msecs = top->delay_secs * 1000;
-	int exit_keys[] = { 'a', NEWT_KEY_ENTER, NEWT_KEY_RIGHT, 0, };
-
-	perf_top_browser__update_rb_tree(browser);
-        perf_top__header_snprintf(top, title, sizeof(title));
-        perf_top__reset_sample_counters(top);
-
-	if (ui_browser__show(&browser->b, title,
-			     "ESC: exit, ENTER|->|a: Live Annotate") < 0)
-		return -1;
-
-	newtFormSetTimer(browser->b.form, delay_msecs);
-	ui_browser__add_exit_keys(&browser->b, exit_keys);
-
-	while (1) {
-		key = ui_browser__run(&browser->b);
-
-		switch (key) {
-		case -1:
-			/* FIXME we need to check if it was es.reason == NEWT_EXIT_TIMER */
-			perf_top_browser__update_rb_tree(browser);
-			perf_top__header_snprintf(top, title, sizeof(title));
-			perf_top__reset_sample_counters(top);
-			ui_browser__set_color(&browser->b, NEWT_COLORSET_ROOT);
-			SLsmg_gotorc(0, 0);
-			slsmg_write_nstring(title, browser->b.width);
-
-			if (top->total_lost_warned != top->session->hists.stats.total_lost)
-				perf_top_browser__warn_lost(browser);
-			break;
-		case 'a':
-		case NEWT_KEY_RIGHT:
-		case NEWT_KEY_ENTER:
-			if (browser->selection)
-				perf_top_browser__annotate(browser);
-			break;
-		case NEWT_KEY_LEFT:
-			continue;
-		case NEWT_KEY_ESCAPE:
-			if (!ui__dialog_yesno("Do you really want to exit?"))
-				continue;
-			/* Fall thru */
-		default:
-			goto out;
-		}
-	}
-out:
-	ui_browser__hide(&browser->b);
-	return key;
-}
-
-int perf_top__tui_browser(struct perf_top *top)
-{
-	struct perf_top_browser browser = {
-		.b = {
-			.entries = &browser.root,
-			.refresh = ui_browser__rb_tree_refresh,
-			.seek	 = ui_browser__rb_tree_seek,
-			.write	 = perf_top_browser__write,
-			.priv	 = top,
-		},
-	};
-
-	return perf_top_browser__run(&browser);
-}