perf tools: Adding xz decompression support

index a5dbba95107f..1c8fbc9588c5 100644
@@ -206,7 +206,6 @@ int thread__fork(struct thread *thread, struct thread *parent, u64 timestamp)
 		err = thread__set_comm(thread, comm, timestamp);
 		if (err)
 			return err;
-		thread->comm_set = true;
 	}
 
 	thread->ppid = parent->tid;

new file mode 100644
index 000000000000..95adc8ced3dd
@@ -0,0 +1,10 @@
+#include <lzma.h>
+
+int main(void)
+{
+	lzma_stream strm = LZMA_STREAM_INIT;
+	int ret;
+
+	ret = lzma_stream_decoder(&strm, UINT64_MAX, LZMA_CONCATENATED);
+	return ret ? -1 : 0;
+}

index 814554d1b857..be368414036c 100644
@@ -148,6 +148,9 @@ static const struct {
 #ifdef HAVE_ZLIB_SUPPORT
 	{ "gz", gzip_decompress_to_file },
 #endif
+#ifdef HAVE_LZMA_SUPPORT
+	{ "xz", lzma_decompress_to_file },
+#endif
 	{ NULL, NULL },
 };
 

95 lines not on this page · raw message

index fbd598afc606..1ff23e04ad27 100644
@@ -329,4 +329,8 @@ bool find_process(const char *name);
 int gzip_decompress_to_file(const char *input, int output_fd);
 #endif
 
+#ifdef HAVE_LZMA_SUPPORT
+int lzma_decompress_to_file(const char *input, int output_fd);
+#endif
+
 #endif /* GIT_COMPAT_UTIL_H */

index 4b7d9ab0f049..31f9959c04c8 100644
@@ -167,6 +167,10 @@ static struct test {
 		.func = test__fdarray__add,
 	},
 	{
+		.desc = "Test kmod_path__parse function",
+		.func = test__kmod_path__parse,
+	},
+	{
 		.func = NULL,
 	},
 };

73 lines not on this page · raw message

index 00e776a87a9c..52758a33f64c 100644
@@ -51,6 +51,7 @@ int test__hists_cumulate(void);
 int test__switch_tracking(void);
 int test__fdarray__filter(void);
 int test__fdarray__add(void);
+int test__kmod_path__parse(void);
 
 #if defined(__x86_64__) || defined(__i386__) || defined(__arm__)
 #ifdef HAVE_DWARF_UNWIND_SUPPORT

69 lines not on this page · raw message

index 1ff23e04ad27..ddca38a901e8 100644
@@ -292,6 +292,20 @@ struct parse_tag {
 
 unsigned long parse_tag_value(const char *str, struct parse_tag *tags);
 
+struct kmod_path {
+	char *name;
+	char *ext;
+	bool  comp;
+	bool  kmod;
+};
+
+int __kmod_path__parse(struct kmod_path *m, const char *path,
+		     bool alloc_name, bool alloc_ext);
+
+#define kmod_path__parse(__m, __p)      __kmod_path__parse(__m, __p, false, false)
+#define kmod_path__parse_name(__m, __p) __kmod_path__parse(__m, __p, true , false)
+#define kmod_path__parse_ext(__m, __p)  __kmod_path__parse(__m, __p, false, true)
+
 #define SRCLINE_UNKNOWN  ((char *) "??:0")
 
 static inline int path__join(char *bf, size_t size,

index be368414036c..fc54cb81c7f8 100644
@@ -1005,21 +1005,24 @@ struct dso *dsos__find(const struct dsos *dsos, const char *name,
 	return dso__find_by_longname(&dsos->root, name);
 }
 
-struct dso *__dsos__findnew(struct dsos *dsos, const char *name)
+struct dso *dsos__new(struct dsos *dsos, const char *name)
 {
-	struct dso *dso = dsos__find(dsos, name, false);
+	struct dso *dso = dso__new(name);
 
-	if (!dso) {
-		dso = dso__new(name);
-		if (dso != NULL) {
-			dsos__add(dsos, dso);
-			dso__set_basename(dso);
-		}
+	if (dso != NULL) {
+		dsos__add(dsos, dso);
+		dso__set_basename(dso);
 	}
-
 	return dso;
 }
 
+struct dso *__dsos__findnew(struct dsos *dsos, const char *name)
+{
+	struct dso *dso = dsos__find(dsos, name, false);
+
+	return dso ? dso : dsos__new(dsos, name);
+}
+
 size_t __dsos__fprintf_buildid(struct list_head *head, FILE *fp,
 			       bool (skip)(struct dso *dso, int parm), int parm)
 {

index ced92841ff97..a712cbcd3a72 100644
@@ -249,6 +249,7 @@ struct dso *dso__kernel_findnew(struct machine *machine, const char *name,
 				const char *short_name, int dso_type);
 
 void dsos__add(struct dsos *dsos, struct dso *dso);
+struct dso *dsos__new(struct dsos *dsos, const char *name);
 struct dso *dsos__find(const struct dsos *dsos, const char *name,
 		       bool cmp_short);
 struct dso *__dsos__findnew(struct dsos *dsos, const char *name);

index 24f8c978cfd4..14f7caf4824a 100644
@@ -460,12 +460,35 @@ int machine__process_lost_event(struct machine *machine __maybe_unused,
 	return 0;
 }
 
+static struct dso *machine__module_dso(struct machine *machine, const char *filename)
+{
+	struct dso *dso;
+	bool compressed;
+
+	dso = dsos__find(&machine->kernel_dsos, filename, false);
+	if (!dso) {
+		dso = dsos__new(&machine->kernel_dsos, filename);
+		if (dso == NULL)
+			return NULL;
+
+		if (machine__is_host(machine))
+			dso->symtab_type = DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE;
+		else
+			dso->symtab_type = DSO_BINARY_TYPE__GUEST_KMODULE;
+
+		/* _KMODULE_COMP should be next to _KMODULE */
+		if (is_kernel_module(filename, &compressed) && compressed)
+			dso->symtab_type++;
+	}
+
+	return dso;
+}
+
 struct map *machine__new_module(struct machine *machine, u64 start,
 				const char *filename)
 {
 	struct map *map;
-	struct dso *dso = __dsos__findnew(&machine->kernel_dsos, filename);
-	bool compressed;
+	struct dso *dso = machine__module_dso(machine, filename);
 
 	if (dso == NULL)
 		return NULL;

@@ -474,15 +497,6 @@ struct map *machine__new_module(struct machine *machine, u64 start,
 	if (map == NULL)
 		return NULL;
 
-	if (machine__is_host(machine))
-		dso->symtab_type = DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE;
-	else
-		dso->symtab_type = DSO_BINARY_TYPE__GUEST_KMODULE;
-
-	/* _KMODULE_COMP should be next to _KMODULE */
-	if (is_kernel_module(filename, &compressed) && compressed)
-		dso->symtab_type++;
-
 	map_groups__insert(&machine->kmaps, map);
 	return map;
 }

index 14f7caf4824a..5a58cdd141ae 100644
@@ -460,14 +460,15 @@ int machine__process_lost_event(struct machine *machine __maybe_unused,
 	return 0;
 }
 
-static struct dso *machine__module_dso(struct machine *machine, const char *filename)
+static struct dso*
+machine__module_dso(struct machine *machine, struct kmod_path *m,
+		    const char *filename)
 {
 	struct dso *dso;
-	bool compressed;
 
-	dso = dsos__find(&machine->kernel_dsos, filename, false);
+	dso = dsos__find(&machine->kernel_dsos, m->name, true);
 	if (!dso) {
-		dso = dsos__new(&machine->kernel_dsos, filename);
+		dso = dsos__new(&machine->kernel_dsos, m->name);
 		if (dso == NULL)
 			return NULL;
 

@@ -477,8 +478,11 @@ static struct dso *machine__module_dso(struct machine *machine, const char *file
 			dso->symtab_type = DSO_BINARY_TYPE__GUEST_KMODULE;
 
 		/* _KMODULE_COMP should be next to _KMODULE */
-		if (is_kernel_module(filename, &compressed) && compressed)
+		if (m->kmod && m->comp)
 			dso->symtab_type++;
+
+		dso__set_short_name(dso, strdup(m->name), true);
+		dso__set_long_name(dso, strdup(filename), true);
 	}
 
 	return dso;

@@ -488,16 +492,24 @@ struct map *machine__new_module(struct machine *machine, u64 start,
 				const char *filename)
 {
 	struct map *map;
-	struct dso *dso = machine__module_dso(machine, filename);
+	struct dso *dso;
+	struct kmod_path m;
 
-	if (dso == NULL)
+	if (kmod_path__parse_name(&m, filename))
 		return NULL;
 
+	dso = machine__module_dso(machine, &m, filename);
+	if (dso == NULL)
+		goto out;
+
 	map = map__new2(start, dso, MAP__FUNCTION);
 	if (map == NULL)
-		return NULL;
+		goto out;
 
 	map_groups__insert(&machine->kmaps, map);
+
+out:
+	free(m.name);
 	return map;
 }
 

@@ -1058,40 +1070,11 @@ static int machine__process_kernel_mmap_event(struct machine *machine,
 				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;
-			/* On some system, modules are compressed like .ko.gz */
-			if (is_supported_compression(dot + 1))
-				dot -= 3;
-			if (!is_kmodule_extension(dot + 1))
-				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;
-
-		dso__set_short_name(map->dso, name, true);
 		map->end = map->start + event->mmap.len;
 	} else if (is_kernel_mmap) {
 		const char *symbol_name = (event->mmap.filename +

index 5a58cdd141ae..0c2d9e68996b 100644
@@ -851,6 +851,28 @@ static char *get_kernel_version(const char *root_dir)
 	return strdup(name);
 }
 
+static int map_groups__set_module_path(struct map_groups *mg, const char *path,
+				       struct kmod_path *m)
+{
+	struct map *map;
+	char *long_name;
+
+	map = map_groups__find_by_name(mg, MAP__FUNCTION, m->name);
+	if (map == NULL)
+		return 0;
+
+	long_name = strdup(path);
+	if (long_name == NULL)
+		return -ENOMEM;
+
+	dso__set_long_name(map->dso, long_name, true);
+	dso__kernel_module_get_build_id(map->dso, "");
+
+	if (m->comp)
+		map->dso->symtab_type++;
+	return 0;
+}
+
 static int map_groups__set_modules_path_dir(struct map_groups *mg,
 				const char *dir_name, int depth)
 {

@@ -889,35 +911,19 @@ static int map_groups__set_modules_path_dir(struct map_groups *mg,
 			if (ret < 0)
 				goto out;
 		} else {
-			char *dot = strrchr(dent->d_name, '.'),
-			     dso_name[PATH_MAX];
-			struct map *map;
-			char *long_name;
-
-			if (dot == NULL)
-				continue;
+			struct kmod_path m;
 
-			/* On some system, modules are compressed like .ko.gz */
-			if (is_supported_compression(dot + 1) &&
-			    is_kmodule_extension(dot - 2))
-				dot -= 3;
+			ret = kmod_path__parse_name(&m, dent->d_name);
+			if (ret)
+				goto out;
 
-			snprintf(dso_name, sizeof(dso_name), "[%.*s]",
-				 (int)(dot - dent->d_name), dent->d_name);
+			if (m.kmod)
+				ret = map_groups__set_module_path(mg, path, &m);
 
-			strxfrchar(dso_name, '-', '_');
-			map = map_groups__find_by_name(mg, MAP__FUNCTION,
-						       dso_name);
-			if (map == NULL)
-				continue;
+			free(m.name);
 
-			long_name = strdup(path);
-			if (long_name == NULL) {
-				ret = -1;
+			if (ret)
 				goto out;
-			}
-			dso__set_long_name(map->dso, long_name, true);
-			dso__kernel_module_get_build_id(map->dso, "");
 		}
 	}
 

index ada16762fac2..8dd530ce20c5 100644
@@ -579,32 +579,41 @@ static int dso__swap_init(struct dso *dso, unsigned char eidata)
 static int decompress_kmodule(struct dso *dso, const char *name,
 			      enum dso_binary_type type)
 {
-	int fd;
-	const char *ext = strrchr(name, '.');
+	int fd = -1, try = 2;
 	char tmpbuf[] = "/tmp/perf-kmod-XXXXXX";
+	struct kmod_path m;
 
 	if (type != DSO_BINARY_TYPE__SYSTEM_PATH_KMODULE_COMP &&
 	    type != DSO_BINARY_TYPE__GUEST_KMODULE_COMP &&
 	    type != DSO_BINARY_TYPE__BUILD_ID_CACHE)
 		return -1;
 
-	if (!ext || !is_supported_compression(ext + 1)) {
-		ext = strrchr(dso->name, '.');
-		if (!ext || !is_supported_compression(ext + 1))
-			return -1;
+again:
+	if (kmod_path__parse_ext(&m, name))
+		return -1;
+
+	if (!m.comp) {
+		if (!--try)
+			goto out;
+
+		free(m.ext);
+		name = dso->name;
+		goto again;
 	}
 
 	fd = mkstemp(tmpbuf);
 	if (fd < 0)
-		return -1;
+		goto out;
 
-	if (!decompress_to_file(ext + 1, name, fd)) {
+	if (!decompress_to_file(m.ext, name, fd)) {
 		close(fd);
 		fd = -1;
 	}
 
 	unlink(tmpbuf);
 
+out:
+	free(m.ext);
 	return fd;
 }
 

index fc54cb81c7f8..a17e5301af29 100644
@@ -178,19 +178,15 @@ bool is_kmodule_extension(const char *ext)
 
 bool is_kernel_module(const char *pathname, bool *compressed)
 {
-	const char *ext = strrchr(pathname, '.');
+	struct kmod_path m;
 
-	if (ext == NULL)
-		return false;
+	if (kmod_path__parse(&m, pathname))
+		return NULL;
 
-	if (is_supported_compression(ext + 1)) {
-		if (compressed)
-			*compressed = true;
-		ext -= 3;
-	} else if (compressed)
-		*compressed = false;
+	if (compressed)
+		*compressed = m.comp;
 
-	return is_kmodule_extension(ext + 1);
+	return m.kmod;
 }
 
 bool decompress_to_file(const char *ext, const char *filename, int output_fd)

index a17e5301af29..e2eeadfad275 100644
@@ -176,16 +176,13 @@ bool is_kmodule_extension(const char *ext)
 	return false;
 }
 
-bool is_kernel_module(const char *pathname, bool *compressed)
+bool is_kernel_module(const char *pathname)
 {
 	struct kmod_path m;
 
 	if (kmod_path__parse(&m, pathname))
 		return NULL;
 
-	if (compressed)
-		*compressed = m.comp;
-
 	return m.kmod;
 }
 

index a712cbcd3a72..357d319a87d1 100644
@@ -190,7 +190,7 @@ int dso__read_binary_type_filename(const struct dso *dso, enum dso_binary_type t
 				   char *root_dir, char *filename, size_t size);
 bool is_supported_compression(const char *ext);
 bool is_kmodule_extension(const char *ext);
-bool is_kernel_module(const char *pathname, bool *compressed);
+bool is_kernel_module(const char *pathname);
 bool decompress_to_file(const char *ext, const char *filename, int output_fd);
 bool dso__needs_decompress(struct dso *dso);
 

index 1f407f7352a7..fb432153e2aa 100644
@@ -1266,7 +1266,7 @@ static int __event_process_build_id(struct build_id_event *bev,
 
 		dso__set_build_id(dso, &bev->build_id);
 
-		if (!is_kernel_module(filename, NULL))
+		if (!is_kernel_module(filename))
 			dso->kernel = dso_type;
 
 		build_id__sprintf(dso->build_id, sizeof(dso->build_id),

index 0c2d9e68996b..03b73261ec3e 100644
@@ -1093,7 +1093,7 @@ static int machine__process_kernel_mmap_event(struct machine *machine,
 		struct dso *dso;
 
 		list_for_each_entry(dso, &machine->kernel_dsos.head, node) {
-			if (is_kernel_module(dso->long_name, NULL))
+			if (is_kernel_module(dso->long_name))
 				continue;
 
 			kernel = dso;

index e2eeadfad275..34b9ad0ff9da 100644
@@ -165,17 +165,6 @@ bool is_supported_compression(const char *ext)
 	return false;
 }
 
-bool is_kmodule_extension(const char *ext)
-{
-	if (strncmp(ext, "ko", 2))
-		return false;
-
-	if (ext[2] == '\0' || (ext[2] == '.' && is_supported_compression(ext+3)))
-		return true;
-
-	return false;
-}
-
 bool is_kernel_module(const char *pathname)
 {
 	struct kmod_path m;

index 357d319a87d1..ec58641ce5dc 100644
@@ -189,7 +189,6 @@ char dso__symtab_origin(const struct dso *dso);
 int dso__read_binary_type_filename(const struct dso *dso, enum dso_binary_type type,
 				   char *root_dir, char *filename, size_t size);
 bool is_supported_compression(const char *ext);
-bool is_kmodule_extension(const char *ext);
 bool is_kernel_module(const char *pathname);
 bool decompress_to_file(const char *ext, const char *filename, int output_fd);
 bool dso__needs_decompress(struct dso *dso);

index 03b73261ec3e..5acfb11fa23f 100644
@@ -498,6 +498,11 @@ struct map *machine__new_module(struct machine *machine, u64 start,
 	if (kmod_path__parse_name(&m, filename))
 		return NULL;
 
+	map = map_groups__find_by_name(&machine->kmaps, MAP__FUNCTION,
+				       m.name);
+	if (map)
+		goto out;
+
 	dso = machine__module_dso(machine, &m, filename);
 	if (dso == NULL)
 		goto out;

index 61bf9128e1f2..b72086eca943 100644
@@ -1008,6 +1008,32 @@ fallback:
 			}
 			filename = symfs_filename;
 		}
+	} else if (dso__needs_decompress(dso)) {
+		char tmp[PATH_MAX];
+		struct kmod_path m;
+		int fd;
+		bool ret;
+
+		if (kmod_path__parse_ext(&m, symfs_filename))
+			goto out_free_filename;
+
+		snprintf(tmp, PATH_MAX, "/tmp/perf-kmod-XXXXXX");
+
+		fd = mkstemp(tmp);
+		if (fd < 0) {
+			free(m.ext);
+			goto out_free_filename;
+		}
+
+		ret = decompress_to_file(m.ext, symfs_filename, fd);
+
+		free(m.ext);
+		close(fd);
+
+		if (!ret)
+			goto out_free_filename;
+
+		strcpy(symfs_filename, tmp);
 	}
 
 	snprintf(command, sizeof(command),

@@ -1027,7 +1053,7 @@ fallback:
 
 	file = popen(command, "r");
 	if (!file)
-		goto out_free_filename;
+		goto out_remove_tmp;
 
 	while (!feof(file))
 		if (symbol__parse_objdump_line(sym, map, file, privsize,

@@ -1042,6 +1068,10 @@ fallback:
 		delete_last_nop(sym);
 
 	pclose(file);
+
+out_remove_tmp:
+	if (dso__needs_decompress(dso))
+		unlink(symfs_filename);
 out_free_filename:
 	if (delete_extract)
 		kcore_extract__delete(&kce);