Merge tag 'perf-tools-for-v5.14-2021-07-01' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux

Pull perf tool updates from Arnaldo Carvalho de Melo:
 "Tools:

   - Add cgroup support for 'perf top' (-G).

   - Add support for KVM MSRs in 'perf kvm stat'

   - Support probes on init functions in 'perf probe', to support the
     bootconfig format.

   - Improve error reporting in 'perf probe'.

   - No need to synthesize BUILD_ID records in 'perf inject' if the
     MMAP2 records have build ids already.

   - Allow toggling source code ('s' hotkey) in 'perf annotate' in all
     lines.

   - Add itrace options support to 'perf annotate'.

   - Support to custom DSO filters for 'perf script'.

  Hardware enablement:

   - Support the HYBRID_TOPOLOGY and HYBRID_CPU_PMU_CAPS features in the
     perf.data file header.

   - Support PMU prefix for mem-load and mem-store events, to support
     hybrid (BIG little) CPUs such as Intel's Alderlake.

   - Support hybrid CPUs in 'perf mem' and 'perf c2c'.

  Hardware tracing:

   - Intel PT now supports tracing KVM guests.

   - Timestamp improvements for ARM's Coresight.

  Build:

   - Add 'make -C tools/perf build-test' entries for
     libopencsd/CORESIGHT=1 and libbpf/LIBBPF_DYNAMIC=1.

   - Use bison's --file-prefix-map option to avoid storing full paths
     when using O= in the perf build.

  Tests:

   - Improve the 'perf test' entries for libpfm4 and BPF counters.

  Misc:

   - Sync msr-index.h, mount.h, kvm headers with the kernel originals.

   - Add vendor events and metrics for Intel's Icelake Server & Client"

* tag 'perf-tools-for-v5.14-2021-07-01' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: (123 commits)
  perf session: Add missing evlist__delete when deleting a session
  perf annotate: Allow 's' on source code lines
  perf dlfilter: Add object_code() to perf_dlfilter_fns
  perf dlfilter: Add attr() to perf_dlfilter_fns
  perf dlfilter: Add srcline() to perf_dlfilter_fns
  perf dlfilter: Add insn() to perf_dlfilter_fns
  perf dlfilter: Add resolve_address() to perf_dlfilter_fns
  perf build: Install perf_dlfilter.h
  perf script: Add option to pass arguments to dlfilters
  perf script: Add option to list dlfilters
  perf script: Add dlfilter__filter_event_early()
  perf script: Add API for filtering via dynamically loaded shared object
  perf llvm: Return -ENOMEM when asprintf() fails
  perf cs-etm: Delay decode of non-timeless data until cs_etm__flush_events()
  tools headers UAPI: Synch KVM's svm.h header with the kernel
  tools kvm headers arm64: Update KVM headers from the kernel sources
  tools headers UAPI: Sync linux/kvm.h with the kernel sources
  tools headers cpufeatures: Sync with the kernel sources
  tools include UAPI: Update linux/mount.h copy
  tools arch x86: Sync the msr-index.h copy with the kernel sources
  ...

1 files changed, 25 insertions, 18 deletions

diff --git a/tools/perf/tests/builtin-test.c b/tools/perf/tests/builtin-test.c
index c4b888f18e9c..41e3cf6bb66c 100644
--- a/tools/perf/tests/builtin-test.c
+++ b/tools/perf/tests/builtin-test.c
@@ -510,8 +510,8 @@ static const char *shell_test__description(char *description, size_t size,
 	return description ? strim(description + 1) : NULL;
 }
 
-#define for_each_shell_test(dir, base, ent)	\
-	while ((ent = readdir(dir)) != NULL)	\
+#define for_each_shell_test(entlist, nr, base, ent)	                \
+	for (int __i = 0; __i < nr && (ent = entlist[__i]); __i++)	\
 		if (!is_directory(base, ent) && ent->d_name[0] != '.')
 
 static const char *shell_tests__dir(char *path, size_t size)
@@ -538,8 +538,9 @@ static const char *shell_tests__dir(char *path, size_t size)
 
 static int shell_tests__max_desc_width(void)
 {
-	DIR *dir;
+	struct dirent **entlist;
 	struct dirent *ent;
+	int n_dirs;
 	char path_dir[PATH_MAX];
 	const char *path = shell_tests__dir(path_dir, sizeof(path_dir));
 	int width = 0;
@@ -547,11 +548,11 @@ static int shell_tests__max_desc_width(void)
 	if (path == NULL)
 		return -1;
 
-	dir = opendir(path);
-	if (!dir)
+	n_dirs = scandir(path, &entlist, NULL, alphasort);
+	if (n_dirs == -1)
 		return -1;
 
-	for_each_shell_test(dir, path, ent) {
+	for_each_shell_test(entlist, n_dirs, path, ent) {
 		char bf[256];
 		const char *desc = shell_test__description(bf, sizeof(bf), path, ent->d_name);
 
@@ -563,7 +564,8 @@ static int shell_tests__max_desc_width(void)
 		}
 	}
 
-	closedir(dir);
+	free(entlist);
+
 	return width;
 }
 
@@ -578,7 +580,10 @@ static int shell_test__run(struct test *test, int subdir __maybe_unused)
 	char script[PATH_MAX];
 	struct shell_test *st = test->priv;
 
-	path__join(script, sizeof(script), st->dir, st->file);
+	path__join(script, sizeof(script) - 3, st->dir, st->file);
+
+	if (verbose)
+		strncat(script, " -v", sizeof(script) - strlen(script) - 1);
 
 	err = system(script);
 	if (!err)
@@ -589,8 +594,9 @@ static int shell_test__run(struct test *test, int subdir __maybe_unused)
 
 static int run_shell_tests(int argc, const char *argv[], int i, int width)
 {
-	DIR *dir;
+	struct dirent **entlist;
 	struct dirent *ent;
+	int n_dirs;
 	char path_dir[PATH_MAX];
 	struct shell_test st = {
 		.dir = shell_tests__dir(path_dir, sizeof(path_dir)),
@@ -599,14 +605,14 @@ static int run_shell_tests(int argc, const char *argv[], int i, int width)
 	if (st.dir == NULL)
 		return -1;
 
-	dir = opendir(st.dir);
-	if (!dir) {
+	n_dirs = scandir(st.dir, &entlist, NULL, alphasort);
+	if (n_dirs == -1) {
 		pr_err("failed to open shell test directory: %s\n",
 			st.dir);
 		return -1;
 	}
 
-	for_each_shell_test(dir, st.dir, ent) {
+	for_each_shell_test(entlist, n_dirs, st.dir, ent) {
 		int curr = i++;
 		char desc[256];
 		struct test test = {
@@ -623,7 +629,7 @@ static int run_shell_tests(int argc, const char *argv[], int i, int width)
 		test_and_print(&test, false, -1);
 	}
 
-	closedir(dir);
+	free(entlist);
 	return 0;
 }
 
@@ -722,19 +728,20 @@ static int __cmd_test(int argc, const char *argv[], struct intlist *skiplist)
 
 static int perf_test__list_shell(int argc, const char **argv, int i)
 {
-	DIR *dir;
+	struct dirent **entlist;
 	struct dirent *ent;
+	int n_dirs;
 	char path_dir[PATH_MAX];
 	const char *path = shell_tests__dir(path_dir, sizeof(path_dir));
 
 	if (path == NULL)
 		return -1;
 
-	dir = opendir(path);
-	if (!dir)
+	n_dirs = scandir(path, &entlist, NULL, alphasort);
+	if (n_dirs == -1)
 		return -1;
 
-	for_each_shell_test(dir, path, ent) {
+	for_each_shell_test(entlist, n_dirs, path, ent) {
 		int curr = i++;
 		char bf[256];
 		struct test t = {
@@ -747,7 +754,7 @@ static int perf_test__list_shell(int argc, const char **argv, int i)
 		pr_info("%2d: %s\n", i, t.desc);
 	}
 
-	closedir(dir);
+	free(entlist);
 	return 0;
 }