ASR_BASE
Change-Id: Icf3719cc0afe3eeb3edc7fa80a2eb5199ca9dda1
diff --git a/marvell/linux/tools/perf/util/util.c b/marvell/linux/tools/perf/util/util.c
new file mode 100644
index 0000000..b3c1ae2
--- /dev/null
+++ b/marvell/linux/tools/perf/util/util.c
@@ -0,0 +1,382 @@
+// SPDX-License-Identifier: GPL-2.0
+#include "util.h"
+#include "debug.h"
+#include "event.h"
+#include <api/fs/fs.h>
+#include <sys/stat.h>
+#include <sys/utsname.h>
+#include <dirent.h>
+#include <fcntl.h>
+#include <inttypes.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <errno.h>
+#include <limits.h>
+#include <linux/capability.h>
+#include <linux/kernel.h>
+#include <linux/log2.h>
+#include <linux/time64.h>
+#include <unistd.h>
+#include "cap.h"
+#include "strlist.h"
+#include "string2.h"
+
+/*
+ * XXX We need to find a better place for these things...
+ */
+
+bool perf_singlethreaded = true;
+
+void perf_set_singlethreaded(void)
+{
+ perf_singlethreaded = true;
+}
+
+void perf_set_multithreaded(void)
+{
+ perf_singlethreaded = false;
+}
+
+int sysctl_perf_event_max_stack = PERF_MAX_STACK_DEPTH;
+int sysctl_perf_event_max_contexts_per_stack = PERF_MAX_CONTEXTS_PER_STACK;
+
+int sysctl__max_stack(void)
+{
+ int value;
+
+ if (sysctl__read_int("kernel/perf_event_max_stack", &value) == 0)
+ sysctl_perf_event_max_stack = value;
+
+ if (sysctl__read_int("kernel/perf_event_max_contexts_per_stack", &value) == 0)
+ sysctl_perf_event_max_contexts_per_stack = value;
+
+ return sysctl_perf_event_max_stack;
+}
+
+bool test_attr__enabled;
+
+bool perf_host = true;
+bool perf_guest = false;
+
+void event_attr_init(struct perf_event_attr *attr)
+{
+ if (!perf_host)
+ attr->exclude_host = 1;
+ if (!perf_guest)
+ attr->exclude_guest = 1;
+ /* to capture ABI version */
+ attr->size = sizeof(*attr);
+}
+
+int mkdir_p(char *path, mode_t mode)
+{
+ struct stat st;
+ int err;
+ char *d = path;
+
+ if (*d != '/')
+ return -1;
+
+ if (stat(path, &st) == 0)
+ return 0;
+
+ while (*++d == '/');
+
+ while ((d = strchr(d, '/'))) {
+ *d = '\0';
+ err = stat(path, &st) && mkdir(path, mode);
+ *d++ = '/';
+ if (err)
+ return -1;
+ while (*d == '/')
+ ++d;
+ }
+ return (stat(path, &st) && mkdir(path, mode)) ? -1 : 0;
+}
+
+static bool match_pat(char *file, const char **pat)
+{
+ int i = 0;
+
+ if (!pat)
+ return true;
+
+ while (pat[i]) {
+ if (strglobmatch(file, pat[i]))
+ return true;
+
+ i++;
+ }
+
+ return false;
+}
+
+/*
+ * The depth specify how deep the removal will go.
+ * 0 - will remove only files under the 'path' directory
+ * 1 .. x - will dive in x-level deep under the 'path' directory
+ *
+ * If specified the pat is array of string patterns ended with NULL,
+ * which are checked upon every file/directory found. Only matching
+ * ones are removed.
+ *
+ * The function returns:
+ * 0 on success
+ * -1 on removal failure with errno set
+ * -2 on pattern failure
+ */
+static int rm_rf_depth_pat(const char *path, int depth, const char **pat)
+{
+ DIR *dir;
+ int ret;
+ struct dirent *d;
+ char namebuf[PATH_MAX];
+ struct stat statbuf;
+
+ /* Do not fail if there's no file. */
+ ret = lstat(path, &statbuf);
+ if (ret)
+ return 0;
+
+ /* Try to remove any file we get. */
+ if (!(statbuf.st_mode & S_IFDIR))
+ return unlink(path);
+
+ /* We have directory in path. */
+ dir = opendir(path);
+ if (dir == NULL)
+ return -1;
+
+ while ((d = readdir(dir)) != NULL && !ret) {
+
+ if (!strcmp(d->d_name, ".") || !strcmp(d->d_name, ".."))
+ continue;
+
+ if (!match_pat(d->d_name, pat)) {
+ ret = -2;
+ break;
+ }
+
+ scnprintf(namebuf, sizeof(namebuf), "%s/%s",
+ path, d->d_name);
+
+ /* We have to check symbolic link itself */
+ ret = lstat(namebuf, &statbuf);
+ if (ret < 0) {
+ pr_debug("stat failed: %s\n", namebuf);
+ break;
+ }
+
+ if (S_ISDIR(statbuf.st_mode))
+ ret = depth ? rm_rf_depth_pat(namebuf, depth - 1, pat) : 0;
+ else
+ ret = unlink(namebuf);
+ }
+ closedir(dir);
+
+ if (ret < 0)
+ return ret;
+
+ return rmdir(path);
+}
+
+int rm_rf_perf_data(const char *path)
+{
+ const char *pat[] = {
+ "header",
+ "data.*",
+ NULL,
+ };
+
+ return rm_rf_depth_pat(path, 0, pat);
+}
+
+int rm_rf(const char *path)
+{
+ return rm_rf_depth_pat(path, INT_MAX, NULL);
+}
+
+/* A filter which removes dot files */
+bool lsdir_no_dot_filter(const char *name __maybe_unused, struct dirent *d)
+{
+ return d->d_name[0] != '.';
+}
+
+/* lsdir reads a directory and store it in strlist */
+struct strlist *lsdir(const char *name,
+ bool (*filter)(const char *, struct dirent *))
+{
+ struct strlist *list = NULL;
+ DIR *dir;
+ struct dirent *d;
+
+ dir = opendir(name);
+ if (!dir)
+ return NULL;
+
+ list = strlist__new(NULL, NULL);
+ if (!list) {
+ errno = ENOMEM;
+ goto out;
+ }
+
+ while ((d = readdir(dir)) != NULL) {
+ if (!filter || filter(name, d))
+ strlist__add(list, d->d_name);
+ }
+
+out:
+ closedir(dir);
+ return list;
+}
+
+size_t hex_width(u64 v)
+{
+ size_t n = 1;
+
+ while ((v >>= 4))
+ ++n;
+
+ return n;
+}
+
+int perf_event_paranoid(void)
+{
+ int value;
+
+ if (sysctl__read_int("kernel/perf_event_paranoid", &value))
+ return INT_MAX;
+
+ return value;
+}
+
+bool perf_event_paranoid_check(int max_level)
+{
+ return perf_cap__capable(CAP_SYS_ADMIN) ||
+ perf_event_paranoid() <= max_level;
+}
+
+static int
+fetch_ubuntu_kernel_version(unsigned int *puint)
+{
+ ssize_t len;
+ size_t line_len = 0;
+ char *ptr, *line = NULL;
+ int version, patchlevel, sublevel, err;
+ FILE *vsig;
+
+ if (!puint)
+ return 0;
+
+ vsig = fopen("/proc/version_signature", "r");
+ if (!vsig) {
+ pr_debug("Open /proc/version_signature failed: %s\n",
+ strerror(errno));
+ return -1;
+ }
+
+ len = getline(&line, &line_len, vsig);
+ fclose(vsig);
+ err = -1;
+ if (len <= 0) {
+ pr_debug("Reading from /proc/version_signature failed: %s\n",
+ strerror(errno));
+ goto errout;
+ }
+
+ ptr = strrchr(line, ' ');
+ if (!ptr) {
+ pr_debug("Parsing /proc/version_signature failed: %s\n", line);
+ goto errout;
+ }
+
+ err = sscanf(ptr + 1, "%d.%d.%d",
+ &version, &patchlevel, &sublevel);
+ if (err != 3) {
+ pr_debug("Unable to get kernel version from /proc/version_signature '%s'\n",
+ line);
+ goto errout;
+ }
+
+ *puint = (version << 16) + (patchlevel << 8) + sublevel;
+ err = 0;
+errout:
+ free(line);
+ return err;
+}
+
+int
+fetch_kernel_version(unsigned int *puint, char *str,
+ size_t str_size)
+{
+ struct utsname utsname;
+ int version, patchlevel, sublevel, err;
+ bool int_ver_ready = false;
+
+ if (access("/proc/version_signature", R_OK) == 0)
+ if (!fetch_ubuntu_kernel_version(puint))
+ int_ver_ready = true;
+
+ if (uname(&utsname))
+ return -1;
+
+ if (str && str_size) {
+ strncpy(str, utsname.release, str_size);
+ str[str_size - 1] = '\0';
+ }
+
+ if (!puint || int_ver_ready)
+ return 0;
+
+ err = sscanf(utsname.release, "%d.%d.%d",
+ &version, &patchlevel, &sublevel);
+
+ if (err != 3) {
+ pr_debug("Unable to get kernel version from uname '%s'\n",
+ utsname.release);
+ return -1;
+ }
+
+ *puint = (version << 16) + (patchlevel << 8) + sublevel;
+ return 0;
+}
+
+int perf_tip(char **strp, const char *dirpath)
+{
+ struct strlist *tips;
+ struct str_node *node;
+ struct strlist_config conf = {
+ .dirname = dirpath,
+ .file_only = true,
+ };
+ int ret = 0;
+
+ *strp = NULL;
+ tips = strlist__new("tips.txt", &conf);
+ if (tips == NULL)
+ return -errno;
+
+ if (strlist__nr_entries(tips) == 0)
+ goto out;
+
+ node = strlist__entry(tips, random() % strlist__nr_entries(tips));
+ if (asprintf(strp, "Tip: %s", node->s) < 0)
+ ret = -ENOMEM;
+
+out:
+ strlist__delete(tips);
+
+ return ret;
+}
+
+char *perf_exe(char *buf, int len)
+{
+ int n = readlink("/proc/self/exe", buf, len);
+ if (n > 0) {
+ buf[n] = 0;
+ return buf;
+ }
+ return strcpy(buf, "perf");
+}