5 files changed, 58 insertions, 0 deletions
diff --git a/tools/perf/Makefile.perf b/tools/perf/Makefile.perf
index 22e92a9ee871..326ca5d6a7ef 100644
--- a/tools/perf/Makefile.perf
+++ b/tools/perf/Makefile.perf
@@ -419,6 +419,12 @@ fadvise_advice_tbl := $(srctree)/tools/perf/trace/beauty/fadvise.sh
 $(fadvise_advice_array): $(linux_uapi_dir)/in.h $(fadvise_advice_tbl)
 	$(Q)$(SHELL) '$(fadvise_advice_tbl)' $(linux_uapi_dir) > $@
 
+fsmount_arrays := $(beauty_outdir)/fsmount_arrays.c
+fsmount_tbls := $(srctree)/tools/perf/trace/beauty/fsmount.sh
+
+$(fsmount_arrays): $(linux_uapi_dir)/fs.h $(fsmount_tbls)
+	$(Q)$(SHELL) '$(fsmount_tbls)' $(linux_uapi_dir) > $@
+
 fspick_arrays := $(beauty_outdir)/fspick_arrays.c
 fspick_tbls := $(srctree)/tools/perf/trace/beauty/fspick.sh
 
@@ -647,6 +653,7 @@ build-dir   = $(if $(__build-dir),$(__build-dir),.)
 prepare: $(OUTPUT)PERF-VERSION-FILE $(OUTPUT)common-cmds.h archheaders $(drm_ioctl_array) \
 	$(fadvise_advice_array) \
 	$(fsconfig_arrays) \
+	$(fsmount_arrays) \
 	$(fspick_arrays) \
 	$(pkey_alloc_access_rights_array) \
 	$(sndrv_pcm_ioctl_array) \
@@ -944,6 +951,7 @@ clean:: $(LIBTRACEEVENT)-clean $(LIBAPI)-clean $(LIBBPF)-clean $(LIBSUBCMD)-clea
 		$(OUTPUT)pmu-events/pmu-events.c \
 		$(OUTPUT)$(fadvise_advice_array) \
 		$(OUTPUT)$(fsconfig_arrays) \
+		$(OUTPUT)$(fsmount_arrays) \
 		$(OUTPUT)$(fspick_arrays) \
 		$(OUTPUT)$(madvise_behavior_array) \
 		$(OUTPUT)$(mmap_flags_array) \
diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 16bb8c04c689..3a2ab68a8b85 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -487,6 +487,11 @@ static const char *bpf_cmd[] = {
 };
 static DEFINE_STRARRAY(bpf_cmd, "BPF_");
 
+static const char *fsmount_flags[] = {
+	[1] = "CLOEXEC",
+};
+static DEFINE_STRARRAY(fsmount_flags, "FSMOUNT_");
+
 #include "trace/beauty/generated/fsconfig_arrays.c"
 
 static DEFINE_STRARRAY(fsconfig_cmds, "FSCONFIG_");
@@ -651,6 +656,10 @@ static size_t syscall_arg__scnprintf_getrandom_flags(char *bf, size_t size,
 	  { .scnprintf	= SCA_STRARRAY, \
 	    .parm	= &strarray__##array, }
 
+#define STRARRAY_FLAGS(name, array) \
+	  { .scnprintf	= SCA_STRARRAY_FLAGS, \
+	    .parm	= &strarray__##array, }
+
 #include "trace/beauty/arch_errno_names.c"
 #include "trace/beauty/eventfd.c"
 #include "trace/beauty/futex_op.c"
@@ -724,6 +733,9 @@ static struct syscall_fmt {
 	  .arg = { [1] = { .scnprintf = SCA_FLOCK, /* cmd */ }, }, },
 	{ .name     = "fsconfig",
 	  .arg = { [1] = STRARRAY(cmd, fsconfig_cmds), }, },
+	{ .name     = "fsmount",
+	  .arg = { [1] = STRARRAY_FLAGS(flags, fsmount_flags),
+		   [2] = { .scnprintf = SCA_FSMOUNT_ATTR_FLAGS, /* attr_flags */ }, }, },
 	{ .name     = "fspick",
 	  .arg = { [0] = { .scnprintf = SCA_FDAT,	  /* dfd */ },
 		   [1] = { .scnprintf = SCA_FILENAME,	  /* path */ },
diff --git a/tools/perf/trace/beauty/Build b/tools/perf/trace/beauty/Build
index c2d38b2b606b..338c61b8ed22 100644
--- a/tools/perf/trace/beauty/Build
+++ b/tools/perf/trace/beauty/Build
@@ -1,6 +1,7 @@
 perf-y += clone.o
 perf-y += fcntl.o
 perf-y += flock.o
+perf-y += fsmount.o
 perf-y += fspick.o
 ifeq ($(SRCARCH),$(filter $(SRCARCH),x86))
 perf-y += ioctl.o
diff --git a/tools/perf/trace/beauty/beauty.h b/tools/perf/trace/beauty/beauty.h
index ad874e0beba5..9385d1cb121a 100644
--- a/tools/perf/trace/beauty/beauty.h
+++ b/tools/perf/trace/beauty/beauty.h
@@ -144,6 +144,9 @@ size_t syscall_arg__scnprintf_fcntl_arg(char *bf, size_t size, struct syscall_ar
 size_t syscall_arg__scnprintf_flock(char *bf, size_t size, struct syscall_arg *arg);
 #define SCA_FLOCK syscall_arg__scnprintf_flock
 
+size_t syscall_arg__scnprintf_fsmount_attr_flags(char *bf, size_t size, struct syscall_arg *arg);
+#define SCA_FSMOUNT_ATTR_FLAGS syscall_arg__scnprintf_fsmount_attr_flags
+
 size_t syscall_arg__scnprintf_fspick_flags(char *bf, size_t size, struct syscall_arg *arg);
 #define SCA_FSPICK_FLAGS syscall_arg__scnprintf_fspick_flags
 
diff --git a/tools/perf/trace/beauty/fsmount.c b/tools/perf/trace/beauty/fsmount.c
new file mode 100644
index 000000000000..30c8c082a3c3
--- /dev/null
+++ b/tools/perf/trace/beauty/fsmount.c
@@ -0,0 +1,34 @@
+// SPDX-License-Identifier: LGPL-2.1
+/*
+ * trace/beauty/fsmount.c
+ *
+ *  Copyright (C) 2019, Red Hat Inc, Arnaldo Carvalho de Melo <acme@redhat.com>
+ */
+
+#include "trace/beauty/beauty.h"
+#include <linux/log2.h>
+#include <uapi/linux/mount.h>
+
+static size_t fsmount__scnprintf_attr_flags(unsigned long flags, char *bf, size_t size, bool show_prefix)
+{
+#include "trace/beauty/generated/fsmount_arrays.c"
+       static DEFINE_STRARRAY(fsmount_attr_flags, "MOUNT_ATTR_");
+       size_t printed = 0;
+
+       if ((flags & ~MOUNT_ATTR__ATIME) != 0)
+	       printed += strarray__scnprintf_flags(&strarray__fsmount_attr_flags, bf, size, show_prefix, flags);
+
+       if ((flags & MOUNT_ATTR__ATIME) == MOUNT_ATTR_RELATIME) {
+	       printed += scnprintf(bf + printed, size - printed, "%s%s%s",
+			            printed ? "|" : "", show_prefix ? "MOUNT_ATTR_" : "", "RELATIME");
+       }
+
+       return printed;
+}
+
+size_t syscall_arg__scnprintf_fsmount_attr_flags(char *bf, size_t size, struct syscall_arg *arg)
+{
+	unsigned long flags = arg->val;
+
+	return fsmount__scnprintf_attr_flags(flags, bf, size, arg->show_string_prefix);
+}