1 files changed, 58 insertions, 244 deletions

diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 6715b1938725..3cf2c3e0605f 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -1,6 +1,7 @@
 #include <linux/types.h>
 #include "event.h"
 #include "debug.h"
+#include "machine.h"
 #include "sort.h"
 #include "string.h"
 #include "strlist.h"
@@ -192,55 +193,43 @@ static int perf_event__synthesize_mmap_events(struct perf_tool *tool,
 	event->header.misc = PERF_RECORD_MISC_USER;
 
 	while (1) {
-		char bf[BUFSIZ], *pbf = bf;
-		int n;
+		char bf[BUFSIZ];
+		char prot[5];
+		char execname[PATH_MAX];
+		char anonstr[] = "//anon";
 		size_t size;
+
 		if (fgets(bf, sizeof(bf), fp) == NULL)
 			break;
 
+		/* ensure null termination since stack will be reused. */
+		strcpy(execname, "");
+
 		/* 00400000-0040c000 r-xp 00000000 fd:01 41038  /bin/cat */
-		n = hex2u64(pbf, &event->mmap.start);
-		if (n < 0)
-			continue;
-		pbf += n + 1;
-		n = hex2u64(pbf, &event->mmap.len);
-		if (n < 0)
+		sscanf(bf, "%"PRIx64"-%"PRIx64" %s %"PRIx64" %*x:%*x %*u %s\n",
+		       &event->mmap.start, &event->mmap.len, prot,
+		       &event->mmap.pgoff, execname);
+
+		if (prot[2] != 'x')
 			continue;
-		pbf += n + 3;
-		if (*pbf == 'x') { /* vm_exec */
-			char anonstr[] = "//anon\n";
-			char *execname = strchr(bf, '/');
-
-			/* Catch VDSO */
-			if (execname == NULL)
-				execname = strstr(bf, "[vdso]");
-
-			/* Catch anonymous mmaps */
-			if ((execname == NULL) && !strstr(bf, "["))
-				execname = anonstr;
-
-			if (execname == NULL)
-				continue;
-
-			pbf += 3;
-			n = hex2u64(pbf, &event->mmap.pgoff);
-
-			size = strlen(execname);
-			execname[size - 1] = '\0'; /* Remove \n */
-			memcpy(event->mmap.filename, execname, size);
-			size = PERF_ALIGN(size, sizeof(u64));
-			event->mmap.len -= event->mmap.start;
-			event->mmap.header.size = (sizeof(event->mmap) -
-					        (sizeof(event->mmap.filename) - size));
-			memset(event->mmap.filename + size, 0, machine->id_hdr_size);
-			event->mmap.header.size += machine->id_hdr_size;
-			event->mmap.pid = tgid;
-			event->mmap.tid = pid;
-
-			if (process(tool, event, &synth_sample, machine) != 0) {
-				rc = -1;
-				break;
-			}
+
+		if (!strcmp(execname, ""))
+			strcpy(execname, anonstr);
+
+		size = strlen(execname) + 1;
+		memcpy(event->mmap.filename, execname, size);
+		size = PERF_ALIGN(size, sizeof(u64));
+		event->mmap.len -= event->mmap.start;
+		event->mmap.header.size = (sizeof(event->mmap) -
+					   (sizeof(event->mmap.filename) - size));
+		memset(event->mmap.filename + size, 0, machine->id_hdr_size);
+		event->mmap.header.size += machine->id_hdr_size;
+		event->mmap.pid = tgid;
+		event->mmap.tid = pid;
+
+		if (process(tool, event, &synth_sample, machine) != 0) {
+			rc = -1;
+			break;
 		}
 	}
 
@@ -404,16 +393,15 @@ int perf_event__synthesize_threads(struct perf_tool *tool,
 
 		if (*end) /* only interested in proper numerical dirents */
 			continue;
-
-		if (__event__synthesize_thread(comm_event, mmap_event, pid, 1,
-					   process, tool, machine) != 0) {
-			err = -1;
-			goto out_closedir;
-		}
+		/*
+ 		 * We may race with exiting thread, so don't stop just because
+ 		 * one thread couldn't be synthesized.
+ 		 */
+		__event__synthesize_thread(comm_event, mmap_event, pid, 1,
+					   process, tool, machine);
 	}
 
 	err = 0;
-out_closedir:
 	closedir(proc);
 out_free_mmap:
 	free(mmap_event);
@@ -519,134 +507,15 @@ int perf_event__process_comm(struct perf_tool *tool __maybe_unused,
 			     struct perf_sample *sample __maybe_unused,
 			     struct machine *machine)
 {
-	struct thread *thread = machine__findnew_thread(machine, event->comm.tid);
-
-	if (dump_trace)
-		perf_event__fprintf_comm(event, stdout);
-
-	if (thread == NULL || thread__set_comm(thread, event->comm.comm)) {
-		dump_printf("problem processing PERF_RECORD_COMM, skipping event.\n");
-		return -1;
-	}
-
-	return 0;
+	return machine__process_comm_event(machine, event);
 }
 
 int perf_event__process_lost(struct perf_tool *tool __maybe_unused,
 			     union perf_event *event,
 			     struct perf_sample *sample __maybe_unused,
-			     struct machine *machine __maybe_unused)
-{
-	dump_printf(": id:%" PRIu64 ": lost:%" PRIu64 "\n",
-		    event->lost.id, event->lost.lost);
-	return 0;
-}
-
-static void perf_event__set_kernel_mmap_len(union perf_event *event,
-					    struct map **maps)
-{
-	maps[MAP__FUNCTION]->start = event->mmap.start;
-	maps[MAP__FUNCTION]->end   = event->mmap.start + event->mmap.len;
-	/*
-	 * Be a bit paranoid here, some perf.data file came with
-	 * a zero sized synthesized MMAP event for the kernel.
-	 */
-	if (maps[MAP__FUNCTION]->end == 0)
-		maps[MAP__FUNCTION]->end = ~0ULL;
-}
-
-static int perf_event__process_kernel_mmap(struct perf_tool *tool
-					   __maybe_unused,
-					   union perf_event *event,
-					   struct machine *machine)
+			     struct machine *machine)
 {
-	struct map *map;
-	char kmmap_prefix[PATH_MAX];
-	enum dso_kernel_type kernel_type;
-	bool is_kernel_mmap;
-
-	machine__mmap_name(machine, kmmap_prefix, sizeof(kmmap_prefix));
-	if (machine__is_host(machine))
-		kernel_type = DSO_TYPE_KERNEL;
-	else
-		kernel_type = DSO_TYPE_GUEST_KERNEL;
-
-	is_kernel_mmap = memcmp(event->mmap.filename,
-				kmmap_prefix,
-				strlen(kmmap_prefix) - 1) == 0;
-	if (event->mmap.filename[0] == '/' ||
-	    (!is_kernel_mmap && event->mmap.filename[0] == '[')) {
-
-		char short_module_name[1024];
-		char *name, *dot;
-
-		if (event->mmap.filename[0] == '/') {
-			name = strrchr(event->mmap.filename, '/');
-			if (name == NULL)
-				goto out_problem;
-
-			++name; /* skip / */
-			dot = strrchr(name, '.');
-			if (dot == NULL)
-				goto out_problem;
-			snprintf(short_module_name, sizeof(short_module_name),
-					"[%.*s]", (int)(dot - name), name);
-			strxfrchar(short_module_name, '-', '_');
-		} else
-			strcpy(short_module_name, event->mmap.filename);
-
-		map = machine__new_module(machine, event->mmap.start,
-					  event->mmap.filename);
-		if (map == NULL)
-			goto out_problem;
-
-		name = strdup(short_module_name);
-		if (name == NULL)
-			goto out_problem;
-
-		map->dso->short_name = name;
-		map->dso->sname_alloc = 1;
-		map->end = map->start + event->mmap.len;
-	} else if (is_kernel_mmap) {
-		const char *symbol_name = (event->mmap.filename +
-				strlen(kmmap_prefix));
-		/*
-		 * Should be there already, from the build-id table in
-		 * the header.
-		 */
-		struct dso *kernel = __dsos__findnew(&machine->kernel_dsos,
-						     kmmap_prefix);
-		if (kernel == NULL)
-			goto out_problem;
-
-		kernel->kernel = kernel_type;
-		if (__machine__create_kernel_maps(machine, kernel) < 0)
-			goto out_problem;
-
-		perf_event__set_kernel_mmap_len(event, machine->vmlinux_maps);
-
-		/*
-		 * Avoid using a zero address (kptr_restrict) for the ref reloc
-		 * symbol. Effectively having zero here means that at record
-		 * time /proc/sys/kernel/kptr_restrict was non zero.
-		 */
-		if (event->mmap.pgoff != 0) {
-			maps__set_kallsyms_ref_reloc_sym(machine->vmlinux_maps,
-							 symbol_name,
-							 event->mmap.pgoff);
-		}
-
-		if (machine__is_default_guest(machine)) {
-			/*
-			 * preload dso of guest kernel and modules
-			 */
-			dso__load(kernel, machine->vmlinux_maps[MAP__FUNCTION],
-				  NULL);
-		}
-	}
-	return 0;
-out_problem:
-	return -1;
+	return machine__process_lost_event(machine, event);
 }
 
 size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp)
@@ -656,43 +525,12 @@ size_t perf_event__fprintf_mmap(union perf_event *event, FILE *fp)
 		       event->mmap.len, event->mmap.pgoff, event->mmap.filename);
 }
 
-int perf_event__process_mmap(struct perf_tool *tool,
+int perf_event__process_mmap(struct perf_tool *tool __maybe_unused,
 			     union perf_event *event,
 			     struct perf_sample *sample __maybe_unused,
 			     struct machine *machine)
 {
-	struct thread *thread;
-	struct map *map;
-	u8 cpumode = event->header.misc & PERF_RECORD_MISC_CPUMODE_MASK;
-	int ret = 0;
-
-	if (dump_trace)
-		perf_event__fprintf_mmap(event, stdout);
-
-	if (cpumode == PERF_RECORD_MISC_GUEST_KERNEL ||
-	    cpumode == PERF_RECORD_MISC_KERNEL) {
-		ret = perf_event__process_kernel_mmap(tool, event, machine);
-		if (ret < 0)
-			goto out_problem;
-		return 0;
-	}
-
-	thread = machine__findnew_thread(machine, event->mmap.pid);
-	if (thread == NULL)
-		goto out_problem;
-	map = map__new(&machine->user_dsos, event->mmap.start,
-			event->mmap.len, event->mmap.pgoff,
-			event->mmap.pid, event->mmap.filename,
-			MAP__FUNCTION);
-	if (map == NULL)
-		goto out_problem;
-
-	thread__insert_map(thread, map);
-	return 0;
-
-out_problem:
-	dump_printf("problem processing PERF_RECORD_MMAP, skipping event.\n");
-	return 0;
+	return machine__process_mmap_event(machine, event);
 }
 
 size_t perf_event__fprintf_task(union perf_event *event, FILE *fp)
@@ -702,29 +540,20 @@ size_t perf_event__fprintf_task(union perf_event *event, FILE *fp)
 		       event->fork.ppid, event->fork.ptid);
 }
 
-int perf_event__process_task(struct perf_tool *tool __maybe_unused,
+int perf_event__process_fork(struct perf_tool *tool __maybe_unused,
 			     union perf_event *event,
 			     struct perf_sample *sample __maybe_unused,
-			      struct machine *machine)
+			     struct machine *machine)
 {
-	struct thread *thread = machine__findnew_thread(machine, event->fork.tid);
-	struct thread *parent = machine__findnew_thread(machine, event->fork.ptid);
-
-	if (dump_trace)
-		perf_event__fprintf_task(event, stdout);
-
-	if (event->header.type == PERF_RECORD_EXIT) {
-		machine__remove_thread(machine, thread);
-		return 0;
-	}
-
-	if (thread == NULL || parent == NULL ||
-	    thread__fork(thread, parent) < 0) {
-		dump_printf("problem processing PERF_RECORD_FORK, skipping event.\n");
-		return -1;
-	}
+	return machine__process_fork_event(machine, event);
+}
 
-	return 0;
+int perf_event__process_exit(struct perf_tool *tool __maybe_unused,
+			     union perf_event *event,
+			     struct perf_sample *sample __maybe_unused,
+			     struct machine *machine)
+{
+	return machine__process_exit_event(machine, event);
 }
 
 size_t perf_event__fprintf(union perf_event *event, FILE *fp)
@@ -750,27 +579,12 @@ size_t perf_event__fprintf(union perf_event *event, FILE *fp)
 	return ret;
 }
 
-int perf_event__process(struct perf_tool *tool, union perf_event *event,
-			struct perf_sample *sample, struct machine *machine)
+int perf_event__process(struct perf_tool *tool __maybe_unused,
+			union perf_event *event,
+			struct perf_sample *sample __maybe_unused,
+			struct machine *machine)
 {
-	switch (event->header.type) {
-	case PERF_RECORD_COMM:
-		perf_event__process_comm(tool, event, sample, machine);
-		break;
-	case PERF_RECORD_MMAP:
-		perf_event__process_mmap(tool, event, sample, machine);
-		break;
-	case PERF_RECORD_FORK:
-	case PERF_RECORD_EXIT:
-		perf_event__process_task(tool, event, sample, machine);
-		break;
-	case PERF_RECORD_LOST:
-		perf_event__process_lost(tool, event, sample, machine);
-	default:
-		break;
-	}
-
-	return 0;
+	return machine__process_event(machine, event);
 }
 
 void thread__find_addr_map(struct thread *self,