init android origin source code

1 files changed, 1062 insertions, 0 deletions

diff --git a/ANDROID_3.4.5/tools/perf/util/parse-events.c b/ANDROID_3.4.5/tools/perf/util/parse-events.c
new file mode 100644
index 00000000..5b3a0ef4
--- /dev/null
+++ b/ANDROID_3.4.5/tools/perf/util/parse-events.c
@@ -0,0 +1,1062 @@
+#include "../../../include/linux/hw_breakpoint.h"
+#include "util.h"
+#include "../perf.h"
+#include "evlist.h"
+#include "evsel.h"
+#include "parse-options.h"
+#include "parse-events.h"
+#include "exec_cmd.h"
+#include "string.h"
+#include "symbol.h"
+#include "cache.h"
+#include "header.h"
+#include "debugfs.h"
+#include "parse-events-flex.h"
+#include "pmu.h"
+
+#define MAX_NAME_LEN 100
+
+struct event_symbol {
+	u8		type;
+	u64		config;
+	const char	*symbol;
+	const char	*alias;
+};
+
+int parse_events_parse(struct list_head *list, struct list_head *list_tmp,
+		       int *idx);
+
+#define CHW(x) .type = PERF_TYPE_HARDWARE, .config = PERF_COUNT_HW_##x
+#define CSW(x) .type = PERF_TYPE_SOFTWARE, .config = PERF_COUNT_SW_##x
+
+static struct event_symbol event_symbols[] = {
+  { CHW(CPU_CYCLES),			"cpu-cycles",			"cycles"		},
+  { CHW(STALLED_CYCLES_FRONTEND),	"stalled-cycles-frontend",	"idle-cycles-frontend"	},
+  { CHW(STALLED_CYCLES_BACKEND),	"stalled-cycles-backend",	"idle-cycles-backend"	},
+  { CHW(INSTRUCTIONS),			"instructions",			""			},
+  { CHW(CACHE_REFERENCES),		"cache-references",		""			},
+  { CHW(CACHE_MISSES),			"cache-misses",			""			},
+  { CHW(BRANCH_INSTRUCTIONS),		"branch-instructions",		"branches"		},
+  { CHW(BRANCH_MISSES),			"branch-misses",		""			},
+  { CHW(BUS_CYCLES),			"bus-cycles",			""			},
+  { CHW(REF_CPU_CYCLES),		"ref-cycles",			""			},
+
+  { CSW(CPU_CLOCK),			"cpu-clock",			""			},
+  { CSW(TASK_CLOCK),			"task-clock",			""			},
+  { CSW(PAGE_FAULTS),			"page-faults",			"faults"		},
+  { CSW(PAGE_FAULTS_MIN),		"minor-faults",			""			},
+  { CSW(PAGE_FAULTS_MAJ),		"major-faults",			""			},
+  { CSW(CONTEXT_SWITCHES),		"context-switches",		"cs"			},
+  { CSW(CPU_MIGRATIONS),		"cpu-migrations",		"migrations"		},
+  { CSW(ALIGNMENT_FAULTS),		"alignment-faults",		""			},
+  { CSW(EMULATION_FAULTS),		"emulation-faults",		""			},
+};
+
+#define __PERF_EVENT_FIELD(config, name) \
+	((config & PERF_EVENT_##name##_MASK) >> PERF_EVENT_##name##_SHIFT)
+
+#define PERF_EVENT_RAW(config)		__PERF_EVENT_FIELD(config, RAW)
+#define PERF_EVENT_CONFIG(config)	__PERF_EVENT_FIELD(config, CONFIG)
+#define PERF_EVENT_TYPE(config)		__PERF_EVENT_FIELD(config, TYPE)
+#define PERF_EVENT_ID(config)		__PERF_EVENT_FIELD(config, EVENT)
+
+static const char *hw_event_names[PERF_COUNT_HW_MAX] = {
+	"cycles",
+	"instructions",
+	"cache-references",
+	"cache-misses",
+	"branches",
+	"branch-misses",
+	"bus-cycles",
+	"stalled-cycles-frontend",
+	"stalled-cycles-backend",
+	"ref-cycles",
+};
+
+static const char *sw_event_names[PERF_COUNT_SW_MAX] = {
+	"cpu-clock",
+	"task-clock",
+	"page-faults",
+	"context-switches",
+	"CPU-migrations",
+	"minor-faults",
+	"major-faults",
+	"alignment-faults",
+	"emulation-faults",
+};
+
+#define MAX_ALIASES 8
+
+static const char *hw_cache[PERF_COUNT_HW_CACHE_MAX][MAX_ALIASES] = {
+ { "L1-dcache",	"l1-d",		"l1d",		"L1-data",		},
+ { "L1-icache",	"l1-i",		"l1i",		"L1-instruction",	},
+ { "LLC",	"L2",							},
+ { "dTLB",	"d-tlb",	"Data-TLB",				},
+ { "iTLB",	"i-tlb",	"Instruction-TLB",			},
+ { "branch",	"branches",	"bpu",		"btb",		"bpc",	},
+ { "node",								},
+};
+
+static const char *hw_cache_op[PERF_COUNT_HW_CACHE_OP_MAX][MAX_ALIASES] = {
+ { "load",	"loads",	"read",					},
+ { "store",	"stores",	"write",				},
+ { "prefetch",	"prefetches",	"speculative-read", "speculative-load",	},
+};
+
+static const char *hw_cache_result[PERF_COUNT_HW_CACHE_RESULT_MAX]
+				  [MAX_ALIASES] = {
+ { "refs",	"Reference",	"ops",		"access",		},
+ { "misses",	"miss",							},
+};
+
+#define C(x)		PERF_COUNT_HW_CACHE_##x
+#define CACHE_READ	(1 << C(OP_READ))
+#define CACHE_WRITE	(1 << C(OP_WRITE))
+#define CACHE_PREFETCH	(1 << C(OP_PREFETCH))
+#define COP(x)		(1 << x)
+
+/*
+ * cache operartion stat
+ * L1I : Read and prefetch only
+ * ITLB and BPU : Read-only
+ */
+static unsigned long hw_cache_stat[C(MAX)] = {
+ [C(L1D)]	= (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
+ [C(L1I)]	= (CACHE_READ | CACHE_PREFETCH),
+ [C(LL)]	= (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
+ [C(DTLB)]	= (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
+ [C(ITLB)]	= (CACHE_READ),
+ [C(BPU)]	= (CACHE_READ),
+ [C(NODE)]	= (CACHE_READ | CACHE_WRITE | CACHE_PREFETCH),
+};
+
+#define for_each_subsystem(sys_dir, sys_dirent, sys_next)	       \
+	while (!readdir_r(sys_dir, &sys_dirent, &sys_next) && sys_next)	       \
+	if (sys_dirent.d_type == DT_DIR &&				       \
+	   (strcmp(sys_dirent.d_name, ".")) &&				       \
+	   (strcmp(sys_dirent.d_name, "..")))
+
+static int tp_event_has_id(struct dirent *sys_dir, struct dirent *evt_dir)
+{
+	char evt_path[MAXPATHLEN];
+	int fd;
+
+	snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
+			sys_dir->d_name, evt_dir->d_name);
+	fd = open(evt_path, O_RDONLY);
+	if (fd < 0)
+		return -EINVAL;
+	close(fd);
+
+	return 0;
+}
+
+#define for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next)	       \
+	while (!readdir_r(evt_dir, &evt_dirent, &evt_next) && evt_next)        \
+	if (evt_dirent.d_type == DT_DIR &&				       \
+	   (strcmp(evt_dirent.d_name, ".")) &&				       \
+	   (strcmp(evt_dirent.d_name, "..")) &&				       \
+	   (!tp_event_has_id(&sys_dirent, &evt_dirent)))
+
+#define MAX_EVENT_LENGTH 512
+
+
+struct tracepoint_path *tracepoint_id_to_path(u64 config)
+{
+	struct tracepoint_path *path = NULL;
+	DIR *sys_dir, *evt_dir;
+	struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
+	char id_buf[24];
+	int fd;
+	u64 id;
+	char evt_path[MAXPATHLEN];
+	char dir_path[MAXPATHLEN];
+
+	if (debugfs_valid_mountpoint(tracing_events_path))
+		return NULL;
+
+	sys_dir = opendir(tracing_events_path);
+	if (!sys_dir)
+		return NULL;
+
+	for_each_subsystem(sys_dir, sys_dirent, sys_next) {
+
+		snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
+			 sys_dirent.d_name);
+		evt_dir = opendir(dir_path);
+		if (!evt_dir)
+			continue;
+
+		for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
+
+			snprintf(evt_path, MAXPATHLEN, "%s/%s/id", dir_path,
+				 evt_dirent.d_name);
+			fd = open(evt_path, O_RDONLY);
+			if (fd < 0)
+				continue;
+			if (read(fd, id_buf, sizeof(id_buf)) < 0) {
+				close(fd);
+				continue;
+			}
+			close(fd);
+			id = atoll(id_buf);
+			if (id == config) {
+				closedir(evt_dir);
+				closedir(sys_dir);
+				path = zalloc(sizeof(*path));
+				path->system = malloc(MAX_EVENT_LENGTH);
+				if (!path->system) {
+					free(path);
+					return NULL;
+				}
+				path->name = malloc(MAX_EVENT_LENGTH);
+				if (!path->name) {
+					free(path->system);
+					free(path);
+					return NULL;
+				}
+				strncpy(path->system, sys_dirent.d_name,
+					MAX_EVENT_LENGTH);
+				strncpy(path->name, evt_dirent.d_name,
+					MAX_EVENT_LENGTH);
+				return path;
+			}
+		}
+		closedir(evt_dir);
+	}
+
+	closedir(sys_dir);
+	return NULL;
+}
+
+#define TP_PATH_LEN (MAX_EVENT_LENGTH * 2 + 1)
+static const char *tracepoint_id_to_name(u64 config)
+{
+	static char buf[TP_PATH_LEN];
+	struct tracepoint_path *path;
+
+	path = tracepoint_id_to_path(config);
+	if (path) {
+		snprintf(buf, TP_PATH_LEN, "%s:%s", path->system, path->name);
+		free(path->name);
+		free(path->system);
+		free(path);
+	} else
+		snprintf(buf, TP_PATH_LEN, "%s:%s", "unknown", "unknown");
+
+	return buf;
+}
+
+static int is_cache_op_valid(u8 cache_type, u8 cache_op)
+{
+	if (hw_cache_stat[cache_type] & COP(cache_op))
+		return 1;	/* valid */
+	else
+		return 0;	/* invalid */
+}
+
+static char *event_cache_name(u8 cache_type, u8 cache_op, u8 cache_result)
+{
+	static char name[50];
+
+	if (cache_result) {
+		sprintf(name, "%s-%s-%s", hw_cache[cache_type][0],
+			hw_cache_op[cache_op][0],
+			hw_cache_result[cache_result][0]);
+	} else {
+		sprintf(name, "%s-%s", hw_cache[cache_type][0],
+			hw_cache_op[cache_op][1]);
+	}
+
+	return name;
+}
+
+const char *event_type(int type)
+{
+	switch (type) {
+	case PERF_TYPE_HARDWARE:
+		return "hardware";
+
+	case PERF_TYPE_SOFTWARE:
+		return "software";
+
+	case PERF_TYPE_TRACEPOINT:
+		return "tracepoint";
+
+	case PERF_TYPE_HW_CACHE:
+		return "hardware-cache";
+
+	default:
+		break;
+	}
+
+	return "unknown";
+}
+
+const char *event_name(struct perf_evsel *evsel)
+{
+	u64 config = evsel->attr.config;
+	int type = evsel->attr.type;
+
+	if (evsel->name)
+		return evsel->name;
+
+	return __event_name(type, config);
+}
+
+const char *__event_name(int type, u64 config)
+{
+	static char buf[32];
+
+	if (type == PERF_TYPE_RAW) {
+		sprintf(buf, "raw 0x%" PRIx64, config);
+		return buf;
+	}
+
+	switch (type) {
+	case PERF_TYPE_HARDWARE:
+		if (config < PERF_COUNT_HW_MAX && hw_event_names[config])
+			return hw_event_names[config];
+		return "unknown-hardware";
+
+	case PERF_TYPE_HW_CACHE: {
+		u8 cache_type, cache_op, cache_result;
+
+		cache_type   = (config >>  0) & 0xff;
+		if (cache_type > PERF_COUNT_HW_CACHE_MAX)
+			return "unknown-ext-hardware-cache-type";
+
+		cache_op     = (config >>  8) & 0xff;
+		if (cache_op > PERF_COUNT_HW_CACHE_OP_MAX)
+			return "unknown-ext-hardware-cache-op";
+
+		cache_result = (config >> 16) & 0xff;
+		if (cache_result > PERF_COUNT_HW_CACHE_RESULT_MAX)
+			return "unknown-ext-hardware-cache-result";
+
+		if (!is_cache_op_valid(cache_type, cache_op))
+			return "invalid-cache";
+
+		return event_cache_name(cache_type, cache_op, cache_result);
+	}
+
+	case PERF_TYPE_SOFTWARE:
+		if (config < PERF_COUNT_SW_MAX && sw_event_names[config])
+			return sw_event_names[config];
+		return "unknown-software";
+
+	case PERF_TYPE_TRACEPOINT:
+		return tracepoint_id_to_name(config);
+
+	default:
+		break;
+	}
+
+	return "unknown";
+}
+
+static int add_event(struct list_head *list, int *idx,
+		     struct perf_event_attr *attr, char *name)
+{
+	struct perf_evsel *evsel;
+
+	event_attr_init(attr);
+
+	evsel = perf_evsel__new(attr, (*idx)++);
+	if (!evsel)
+		return -ENOMEM;
+
+	list_add_tail(&evsel->node, list);
+
+	evsel->name = strdup(name);
+	return 0;
+}
+
+static int parse_aliases(char *str, const char *names[][MAX_ALIASES], int size)
+{
+	int i, j;
+	int n, longest = -1;
+
+	for (i = 0; i < size; i++) {
+		for (j = 0; j < MAX_ALIASES && names[i][j]; j++) {
+			n = strlen(names[i][j]);
+			if (n > longest && !strncasecmp(str, names[i][j], n))
+				longest = n;
+		}
+		if (longest > 0)
+			return i;
+	}
+
+	return -1;
+}
+
+int parse_events_add_cache(struct list_head *list, int *idx,
+			   char *type, char *op_result1, char *op_result2)
+{
+	struct perf_event_attr attr;
+	char name[MAX_NAME_LEN];
+	int cache_type = -1, cache_op = -1, cache_result = -1;
+	char *op_result[2] = { op_result1, op_result2 };
+	int i, n;
+
+	/*
+	 * No fallback - if we cannot get a clear cache type
+	 * then bail out:
+	 */
+	cache_type = parse_aliases(type, hw_cache,
+				   PERF_COUNT_HW_CACHE_MAX);
+	if (cache_type == -1)
+		return -EINVAL;
+
+	n = snprintf(name, MAX_NAME_LEN, "%s", type);
+
+	for (i = 0; (i < 2) && (op_result[i]); i++) {
+		char *str = op_result[i];
+
+		snprintf(name + n, MAX_NAME_LEN - n, "-%s\n", str);
+
+		if (cache_op == -1) {
+			cache_op = parse_aliases(str, hw_cache_op,
+						 PERF_COUNT_HW_CACHE_OP_MAX);
+			if (cache_op >= 0) {
+				if (!is_cache_op_valid(cache_type, cache_op))
+					return -EINVAL;
+				continue;
+			}
+		}
+
+		if (cache_result == -1) {
+			cache_result = parse_aliases(str, hw_cache_result,
+						PERF_COUNT_HW_CACHE_RESULT_MAX);
+			if (cache_result >= 0)
+				continue;
+		}
+	}
+
+	/*
+	 * Fall back to reads:
+	 */
+	if (cache_op == -1)
+		cache_op = PERF_COUNT_HW_CACHE_OP_READ;
+
+	/*
+	 * Fall back to accesses:
+	 */
+	if (cache_result == -1)
+		cache_result = PERF_COUNT_HW_CACHE_RESULT_ACCESS;
+
+	memset(&attr, 0, sizeof(attr));
+	attr.config = cache_type | (cache_op << 8) | (cache_result << 16);
+	attr.type = PERF_TYPE_HW_CACHE;
+	return add_event(list, idx, &attr, name);
+}
+
+static int add_tracepoint(struct list_head *list, int *idx,
+			  char *sys_name, char *evt_name)
+{
+	struct perf_event_attr attr;
+	char name[MAX_NAME_LEN];
+	char evt_path[MAXPATHLEN];
+	char id_buf[4];
+	u64 id;
+	int fd;
+
+	snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
+		 sys_name, evt_name);
+
+	fd = open(evt_path, O_RDONLY);
+	if (fd < 0)
+		return -1;
+
+	if (read(fd, id_buf, sizeof(id_buf)) < 0) {
+		close(fd);
+		return -1;
+	}
+
+	close(fd);
+	id = atoll(id_buf);
+
+	memset(&attr, 0, sizeof(attr));
+	attr.config = id;
+	attr.type = PERF_TYPE_TRACEPOINT;
+	attr.sample_type |= PERF_SAMPLE_RAW;
+	attr.sample_type |= PERF_SAMPLE_TIME;
+	attr.sample_type |= PERF_SAMPLE_CPU;
+	attr.sample_period = 1;
+
+	snprintf(name, MAX_NAME_LEN, "%s:%s", sys_name, evt_name);
+	return add_event(list, idx, &attr, name);
+}
+
+static int add_tracepoint_multi(struct list_head *list, int *idx,
+				char *sys_name, char *evt_name)
+{
+	char evt_path[MAXPATHLEN];
+	struct dirent *evt_ent;
+	DIR *evt_dir;
+	int ret = 0;
+
+	snprintf(evt_path, MAXPATHLEN, "%s/%s", tracing_events_path, sys_name);
+	evt_dir = opendir(evt_path);
+	if (!evt_dir) {
+		perror("Can't open event dir");
+		return -1;
+	}
+
+	while (!ret && (evt_ent = readdir(evt_dir))) {
+		if (!strcmp(evt_ent->d_name, ".")
+		    || !strcmp(evt_ent->d_name, "..")
+		    || !strcmp(evt_ent->d_name, "enable")
+		    || !strcmp(evt_ent->d_name, "filter"))
+			continue;
+
+		if (!strglobmatch(evt_ent->d_name, evt_name))
+			continue;
+
+		ret = add_tracepoint(list, idx, sys_name, evt_ent->d_name);
+	}
+
+	return ret;
+}
+
+int parse_events_add_tracepoint(struct list_head *list, int *idx,
+				char *sys, char *event)
+{
+	int ret;
+
+	ret = debugfs_valid_mountpoint(tracing_events_path);
+	if (ret)
+		return ret;
+
+	return strpbrk(event, "*?") ?
+	       add_tracepoint_multi(list, idx, sys, event) :
+	       add_tracepoint(list, idx, sys, event);
+}
+
+static int
+parse_breakpoint_type(const char *type, struct perf_event_attr *attr)
+{
+	int i;
+
+	for (i = 0; i < 3; i++) {
+		if (!type || !type[i])
+			break;
+
+		switch (type[i]) {
+		case 'r':
+			attr->bp_type |= HW_BREAKPOINT_R;
+			break;
+		case 'w':
+			attr->bp_type |= HW_BREAKPOINT_W;
+			break;
+		case 'x':
+			attr->bp_type |= HW_BREAKPOINT_X;
+			break;
+		default:
+			return -EINVAL;
+		}
+	}
+
+	if (!attr->bp_type) /* Default */
+		attr->bp_type = HW_BREAKPOINT_R | HW_BREAKPOINT_W;
+
+	return 0;
+}
+
+int parse_events_add_breakpoint(struct list_head *list, int *idx,
+				void *ptr, char *type)
+{
+	struct perf_event_attr attr;
+	char name[MAX_NAME_LEN];
+
+	memset(&attr, 0, sizeof(attr));
+	attr.bp_addr = (unsigned long) ptr;
+
+	if (parse_breakpoint_type(type, &attr))
+		return -EINVAL;
+
+	/*
+	 * We should find a nice way to override the access length
+	 * Provide some defaults for now
+	 */
+	if (attr.bp_type == HW_BREAKPOINT_X)
+		attr.bp_len = sizeof(long);
+	else
+		attr.bp_len = HW_BREAKPOINT_LEN_4;
+
+	attr.type = PERF_TYPE_BREAKPOINT;
+
+	snprintf(name, MAX_NAME_LEN, "mem:%p:%s", ptr, type ? type : "rw");
+	return add_event(list, idx, &attr, name);
+}
+
+static int config_term(struct perf_event_attr *attr,
+		       struct parse_events__term *term)
+{
+	switch (term->type) {
+	case PARSE_EVENTS__TERM_TYPE_CONFIG:
+		attr->config = term->val.num;
+		break;
+	case PARSE_EVENTS__TERM_TYPE_CONFIG1:
+		attr->config1 = term->val.num;
+		break;
+	case PARSE_EVENTS__TERM_TYPE_CONFIG2:
+		attr->config2 = term->val.num;
+		break;
+	case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
+		attr->sample_period = term->val.num;
+		break;
+	case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
+		/*
+		 * TODO uncomment when the field is available
+		 * attr->branch_sample_type = term->val.num;
+		 */
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
+static int config_attr(struct perf_event_attr *attr,
+		       struct list_head *head, int fail)
+{
+	struct parse_events__term *term;
+
+	list_for_each_entry(term, head, list)
+		if (config_term(attr, term) && fail)
+			return -EINVAL;
+
+	return 0;
+}
+
+int parse_events_add_numeric(struct list_head *list, int *idx,
+			     unsigned long type, unsigned long config,
+			     struct list_head *head_config)
+{
+	struct perf_event_attr attr;
+
+	memset(&attr, 0, sizeof(attr));
+	attr.type = type;
+	attr.config = config;
+
+	if (head_config &&
+	    config_attr(&attr, head_config, 1))
+		return -EINVAL;
+
+	return add_event(list, idx, &attr,
+			 (char *) __event_name(type, config));
+}
+
+int parse_events_add_pmu(struct list_head *list, int *idx,
+			 char *name, struct list_head *head_config)
+{
+	struct perf_event_attr attr;
+	struct perf_pmu *pmu;
+
+	pmu = perf_pmu__find(name);
+	if (!pmu)
+		return -EINVAL;
+
+	memset(&attr, 0, sizeof(attr));
+
+	/*
+	 * Configure hardcoded terms first, no need to check
+	 * return value when called with fail == 0 ;)
+	 */
+	config_attr(&attr, head_config, 0);
+
+	if (perf_pmu__config(pmu, &attr, head_config))
+		return -EINVAL;
+
+	return add_event(list, idx, &attr, (char *) "pmu");
+}
+
+void parse_events_update_lists(struct list_head *list_event,
+			       struct list_head *list_all)
+{
+	/*
+	 * Called for single event definition. Update the
+	 * 'all event' list, and reinit the 'signle event'
+	 * list, for next event definition.
+	 */
+	list_splice_tail(list_event, list_all);
+	INIT_LIST_HEAD(list_event);
+}
+
+int parse_events_modifier(struct list_head *list, char *str)
+{
+	struct perf_evsel *evsel;
+	int exclude = 0, exclude_GH = 0;
+	int eu = 0, ek = 0, eh = 0, eH = 0, eG = 0, precise = 0;
+
+	if (str == NULL)
+		return 0;
+
+	while (*str) {
+		if (*str == 'u') {
+			if (!exclude)
+				exclude = eu = ek = eh = 1;
+			eu = 0;
+		} else if (*str == 'k') {
+			if (!exclude)
+				exclude = eu = ek = eh = 1;
+			ek = 0;
+		} else if (*str == 'h') {
+			if (!exclude)
+				exclude = eu = ek = eh = 1;
+			eh = 0;
+		} else if (*str == 'G') {
+			if (!exclude_GH)
+				exclude_GH = eG = eH = 1;
+			eG = 0;
+		} else if (*str == 'H') {
+			if (!exclude_GH)
+				exclude_GH = eG = eH = 1;
+			eH = 0;
+		} else if (*str == 'p') {
+			precise++;
+		} else
+			break;
+
+		++str;
+	}
+
+	/*
+	 * precise ip:
+	 *
+	 *  0 - SAMPLE_IP can have arbitrary skid
+	 *  1 - SAMPLE_IP must have constant skid
+	 *  2 - SAMPLE_IP requested to have 0 skid
+	 *  3 - SAMPLE_IP must have 0 skid
+	 *
+	 *  See also PERF_RECORD_MISC_EXACT_IP
+	 */
+	if (precise > 3)
+		return -EINVAL;
+
+	list_for_each_entry(evsel, list, node) {
+		evsel->attr.exclude_user   = eu;
+		evsel->attr.exclude_kernel = ek;
+		evsel->attr.exclude_hv     = eh;
+		evsel->attr.precise_ip     = precise;
+		evsel->attr.exclude_host   = eH;
+		evsel->attr.exclude_guest  = eG;
+	}
+
+	return 0;
+}
+
+int parse_events(struct perf_evlist *evlist, const char *str, int unset __used)
+{
+	LIST_HEAD(list);
+	LIST_HEAD(list_tmp);
+	YY_BUFFER_STATE buffer;
+	int ret, idx = evlist->nr_entries;
+
+	buffer = parse_events__scan_string(str);
+
+	ret = parse_events_parse(&list, &list_tmp, &idx);
+
+	parse_events__flush_buffer(buffer);
+	parse_events__delete_buffer(buffer);
+
+	if (!ret) {
+		int entries = idx - evlist->nr_entries;
+		perf_evlist__splice_list_tail(evlist, &list, entries);
+		return 0;
+	}
+
+	/*
+	 * There are 2 users - builtin-record and builtin-test objects.
+	 * 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;
+}
+
+int parse_events_option(const struct option *opt, const char *str,
+			int unset __used)
+{
+	struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
+	return parse_events(evlist, str, unset);
+}
+
+int parse_filter(const struct option *opt, const char *str,
+		 int unset __used)
+{
+	struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
+	struct perf_evsel *last = NULL;
+
+	if (evlist->nr_entries > 0)
+		last = list_entry(evlist->entries.prev, struct perf_evsel, node);
+
+	if (last == NULL || last->attr.type != PERF_TYPE_TRACEPOINT) {
+		fprintf(stderr,
+			"-F option should follow a -e tracepoint option\n");
+		return -1;
+	}
+
+	last->filter = strdup(str);
+	if (last->filter == NULL) {
+		fprintf(stderr, "not enough memory to hold filter string\n");
+		return -1;
+	}
+
+	return 0;
+}
+
+static const char * const event_type_descriptors[] = {
+	"Hardware event",
+	"Software event",
+	"Tracepoint event",
+	"Hardware cache event",
+	"Raw hardware event descriptor",
+	"Hardware breakpoint",
+};
+
+/*
+ * Print the events from <debugfs_mount_point>/tracing/events
+ */
+
+void print_tracepoint_events(const char *subsys_glob, const char *event_glob)
+{
+	DIR *sys_dir, *evt_dir;
+	struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
+	char evt_path[MAXPATHLEN];
+	char dir_path[MAXPATHLEN];
+
+	if (debugfs_valid_mountpoint(tracing_events_path))
+		return;
+
+	sys_dir = opendir(tracing_events_path);
+	if (!sys_dir)
+		return;
+
+	for_each_subsystem(sys_dir, sys_dirent, sys_next) {
+		if (subsys_glob != NULL && 
+		    !strglobmatch(sys_dirent.d_name, subsys_glob))
+			continue;
+
+		snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
+			 sys_dirent.d_name);
+		evt_dir = opendir(dir_path);
+		if (!evt_dir)
+			continue;
+
+		for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
+			if (event_glob != NULL && 
+			    !strglobmatch(evt_dirent.d_name, event_glob))
+				continue;
+
+			snprintf(evt_path, MAXPATHLEN, "%s:%s",
+				 sys_dirent.d_name, evt_dirent.d_name);
+			printf("  %-50s [%s]\n", evt_path,
+				event_type_descriptors[PERF_TYPE_TRACEPOINT]);
+		}
+		closedir(evt_dir);
+	}
+	closedir(sys_dir);
+}
+
+/*
+ * Check whether event is in <debugfs_mount_point>/tracing/events
+ */
+
+int is_valid_tracepoint(const char *event_string)
+{
+	DIR *sys_dir, *evt_dir;
+	struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
+	char evt_path[MAXPATHLEN];
+	char dir_path[MAXPATHLEN];
+
+	if (debugfs_valid_mountpoint(tracing_events_path))
+		return 0;
+
+	sys_dir = opendir(tracing_events_path);
+	if (!sys_dir)
+		return 0;
+
+	for_each_subsystem(sys_dir, sys_dirent, sys_next) {
+
+		snprintf(dir_path, MAXPATHLEN, "%s/%s", tracing_events_path,
+			 sys_dirent.d_name);
+		evt_dir = opendir(dir_path);
+		if (!evt_dir)
+			continue;
+
+		for_each_event(sys_dirent, evt_dir, evt_dirent, evt_next) {
+			snprintf(evt_path, MAXPATHLEN, "%s:%s",
+				 sys_dirent.d_name, evt_dirent.d_name);
+			if (!strcmp(evt_path, event_string)) {
+				closedir(evt_dir);
+				closedir(sys_dir);
+				return 1;
+			}
+		}
+		closedir(evt_dir);
+	}
+	closedir(sys_dir);
+	return 0;
+}
+
+void print_events_type(u8 type)
+{
+	struct event_symbol *syms = event_symbols;
+	unsigned int i;
+	char name[64];
+
+	for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) {
+		if (type != syms->type)
+			continue;
+
+		if (strlen(syms->alias))
+			snprintf(name, sizeof(name),  "%s OR %s",
+				 syms->symbol, syms->alias);
+		else
+			snprintf(name, sizeof(name), "%s", syms->symbol);
+
+		printf("  %-50s [%s]\n", name,
+			event_type_descriptors[type]);
+	}
+}
+
+int print_hwcache_events(const char *event_glob)
+{
+	unsigned int type, op, i, printed = 0;
+
+	for (type = 0; type < PERF_COUNT_HW_CACHE_MAX; type++) {
+		for (op = 0; op < PERF_COUNT_HW_CACHE_OP_MAX; op++) {
+			/* skip invalid cache type */
+			if (!is_cache_op_valid(type, op))
+				continue;
+
+			for (i = 0; i < PERF_COUNT_HW_CACHE_RESULT_MAX; i++) {
+				char *name = event_cache_name(type, op, i);
+
+				if (event_glob != NULL && !strglobmatch(name, event_glob))
+					continue;
+
+				printf("  %-50s [%s]\n", name,
+					event_type_descriptors[PERF_TYPE_HW_CACHE]);
+				++printed;
+			}
+		}
+	}
+
+	return printed;
+}
+
+/*
+ * Print the help text for the event symbols:
+ */
+void print_events(const char *event_glob)
+{
+	unsigned int i, type, prev_type = -1, printed = 0, ntypes_printed = 0;
+	struct event_symbol *syms = event_symbols;
+	char name[MAX_NAME_LEN];
+
+	printf("\n");
+	printf("List of pre-defined events (to be used in -e):\n");
+
+	for (i = 0; i < ARRAY_SIZE(event_symbols); i++, syms++) {
+		type = syms->type;
+
+		if (type != prev_type && printed) {
+			printf("\n");
+			printed = 0;
+			ntypes_printed++;
+		}
+
+		if (event_glob != NULL && 
+		    !(strglobmatch(syms->symbol, event_glob) ||
+		      (syms->alias && strglobmatch(syms->alias, event_glob))))
+			continue;
+
+		if (strlen(syms->alias))
+			snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
+		else
+			strncpy(name, syms->symbol, MAX_NAME_LEN);
+		printf("  %-50s [%s]\n", name,
+			event_type_descriptors[type]);
+
+		prev_type = type;
+		++printed;
+	}
+
+	if (ntypes_printed) {
+		printed = 0;
+		printf("\n");
+	}
+	print_hwcache_events(event_glob);
+
+	if (event_glob != NULL)
+		return;
+
+	printf("\n");
+	printf("  %-50s [%s]\n",
+	       "rNNN",
+	       event_type_descriptors[PERF_TYPE_RAW]);
+	printf("  %-50s [%s]\n",
+	       "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
+	       event_type_descriptors[PERF_TYPE_RAW]);
+	printf("   (see 'perf list --help' on how to encode it)\n");
+	printf("\n");
+
+	printf("  %-50s [%s]\n",
+			"mem:<addr>[:access]",
+			event_type_descriptors[PERF_TYPE_BREAKPOINT]);
+	printf("\n");
+
+	print_tracepoint_events(NULL, NULL);
+}
+
+int parse_events__is_hardcoded_term(struct parse_events__term *term)
+{
+	return term->type <= PARSE_EVENTS__TERM_TYPE_HARDCODED_MAX;
+}
+
+int parse_events__new_term(struct parse_events__term **_term, int type,
+			   char *config, char *str, long num)
+{
+	struct parse_events__term *term;
+
+	term = zalloc(sizeof(*term));
+	if (!term)
+		return -ENOMEM;
+
+	INIT_LIST_HEAD(&term->list);
+	term->type = type;
+	term->config = config;
+
+	switch (type) {
+	case PARSE_EVENTS__TERM_TYPE_CONFIG:
+	case PARSE_EVENTS__TERM_TYPE_CONFIG1:
+	case PARSE_EVENTS__TERM_TYPE_CONFIG2:
+	case PARSE_EVENTS__TERM_TYPE_SAMPLE_PERIOD:
+	case PARSE_EVENTS__TERM_TYPE_BRANCH_SAMPLE_TYPE:
+	case PARSE_EVENTS__TERM_TYPE_NUM:
+		term->val.num = num;
+		break;
+	case PARSE_EVENTS__TERM_TYPE_STR:
+		term->val.str = str;
+		break;
+	default:
+		return -EINVAL;
+	}
+
+	*_term = term;
+	return 0;
+}
+
+void parse_events__free_terms(struct list_head *terms)
+{
+	struct parse_events__term *term, *h;
+
+	list_for_each_entry_safe(term, h, terms, list)
+		free(term);
+
+	free(terms);
+}