perf trace: Support 'strace' syscall event groups

I.e.:

  $ cat ~/share/perf-core/strace/groups/file
  access
  chmod
  creat
  execve
  faccessat
  getcwd
  lstat
  mkdir
  open
  openat
  quotactl
  readlink
  rename
  rmdir
  stat
  statfs
  symlink
  unlink
  $

Then, on a quiet desktop, try running this and then moving your mouse to
see the deluge of mouse related activity:

  # perf probe 'vfs_getname=getname_flags:72 pathname=filename:string'
  Added new event:
    probe:vfs_getname    (on getname_flags:72 with pathname=filename:string)

  You can now use it in all perf tools, such as:

	perf record -e probe:vfs_getname -aR sleep 1
  #
  # trace --ev probe:vfs_getname --filter-pids 2232 -e file
   0.042 (0.042 ms): mousetweaks/2235 open(filename: 0x14e3910, mode: 438                                   ) ...
   0.042 (        ): probe:vfs_getname:(ffffffff812230bc) pathname="/home/acme/.icons/Adwaita/cursors/xterm")
   0.100 (0.100 ms): mousetweaks/2235  ... [continued]: open()) = -1 ENOENT No such file or directory
   0.142 (0.018 ms): mousetweaks/2235 open(filename: 0x14c3c10, mode: 438                                   ) ...
   0.142 (        ): probe:vfs_getname:(ffffffff812230bc) pathname="/home/acme/.icons/Adwaita/index.theme")
   0.192 (0.069 ms): mousetweaks/2235  ... [continued]: open()) = -1 ENOENT No such file or directory
   0.230 (0.017 ms): mousetweaks/2235 open(filename: 0x14c3c10, mode: 438                                   ) ...
   0.230 (        ): probe:vfs_getname:(ffffffff812230bc) pathname="/usr/share/icons/Adwaita/cursors/xterm")
   0.253 (0.041 ms): mousetweaks/2235  ... [continued]: open()) = 14
   0.459 (0.008 ms): mousetweaks/2235 open(filename: 0x14e3910, mode: 438                                   ) ...
   0.459 (        ): probe:vfs_getname:(ffffffff812230bc) pathname="/home/acme/.icons/Adwaita/cursors/left_side")
   0.468 (0.017 ms): mousetweaks/2235  ... [continued]: open()) = -1 ENOENT No such file or directory

Need to combine that raw_syscalls:sys_enter(open) + probe:vfs_getname +
raw_syscalls:sys_exit(open) sequence...

Now, if you're bored, please write some more syscall groups, like the ones
in 'strace' and send it our way :-)

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: David Ahern <dsahern@gmail.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Milian Wolff <mail@milianw.de>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Stephane Eranian <eranian@google.com>
Link: http://lkml.kernel.org/n/tip-a42xklu59lcbxp7bbnic74a8@git.kernel.orgSigned-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

tools/perf/Build

@@ -35,6 +35,7 @@ paths += -DPERF_MAN_PATH="BUILD_STR($(mandir_SQ))"
 CFLAGS_builtin-help.o      += $(paths)
 CFLAGS_builtin-timechart.o += $(paths)
 CFLAGS_perf.o              += -DPERF_HTML_PATH="BUILD_STR($(htmldir_SQ))" -include $(OUTPUT)PERF-VERSION-FILE
+CFLAGS_builtin-trace.o	   += -DSTRACE_GROUPS_DIR="BUILD_STR($(STRACE_GROUPS_DIR_SQ))"
 
 libperf-y += util/
 libperf-y += arch/

tools/perf/Makefile.perf

@@ -494,6 +494,11 @@ endif
 		$(INSTALL) $(OUTPUT)perf-archive -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)'
 	$(call QUIET_INSTALL, perf-with-kcore) \
 		$(INSTALL) $(OUTPUT)perf-with-kcore -t '$(DESTDIR_SQ)$(perfexec_instdir_SQ)'
+ifndef NO_LIBAUDIT
+	$(call QUIET_INSTALL, strace/groups) \
+		$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(STRACE_GROUPS_INSTDIR_SQ)'; \
+		$(INSTALL) trace/strace/groups/* -t '$(DESTDIR_SQ)$(STRACE_GROUPS_INSTDIR_SQ)'
+endif
 ifndef NO_LIBPERL
 	$(call QUIET_INSTALL, perl-scripts) \
 		$(INSTALL) -d -m 755 '$(DESTDIR_SQ)$(perfexec_instdir_SQ)/scripts/perl/Perf-Trace-Util/lib/Perf/Trace'; \

tools/perf/builtin-trace.c

@@ -3,6 +3,7 @@
 #include "util/color.h"
 #include "util/debug.h"
 #include "util/evlist.h"
+#include "util/exec_cmd.h"
 #include "util/machine.h"
 #include "util/session.h"
 #include "util/thread.h"
@@ -2927,11 +2928,14 @@ int cmd_trace(int argc, const char **argv, const char *prefix __maybe_unused)
 
 	if (ev_qualifier_str != NULL) {
 		const char *s = ev_qualifier_str;
+		struct strlist_config slist_config = {
+			.dirname = system_path(STRACE_GROUPS_DIR),
+		};
 
 		trace.not_ev_qualifier = *s == '!';
 		if (trace.not_ev_qualifier)
 			++s;
-		trace.ev_qualifier = strlist__new(s, NULL);
+		trace.ev_qualifier = strlist__new(s, &slist_config);
 		if (trace.ev_qualifier == NULL) {
 			fputs("Not enough memory to parse event qualifier",
 			      trace.output);

tools/perf/config/Makefile

@@ -644,6 +644,7 @@ infodir = share/info
 perfexecdir = libexec/perf-core
 sharedir = $(prefix)/share
 template_dir = share/perf-core/templates
+STRACE_GROUPS_DIR = share/perf-core/strace/groups
 htmldir = share/doc/perf-doc
 ifeq ($(prefix),/usr)
 sysconfdir = /etc
@@ -663,6 +664,7 @@ libdir = $(prefix)/$(lib)
 
 # Shell quote (do not use $(call) to accommodate ancient setups);
 ETC_PERFCONFIG_SQ = $(subst ','\'',$(ETC_PERFCONFIG))
+STRACE_GROUPS_DIR_SQ = $(subst ','\'',$(STRACE_GROUPS_DIR))
 DESTDIR_SQ = $(subst ','\'',$(DESTDIR))
 bindir_SQ = $(subst ','\'',$(bindir))
 mandir_SQ = $(subst ','\'',$(mandir))
@@ -676,10 +678,13 @@ libdir_SQ = $(subst ','\'',$(libdir))
 
 ifneq ($(filter /%,$(firstword $(perfexecdir))),)
 perfexec_instdir = $(perfexecdir)
+STRACE_GROUPS_INSTDIR = $(STRACE_GROUPS_DIR)
 else
 perfexec_instdir = $(prefix)/$(perfexecdir)
+STRACE_GROUPS_INSTDIR = $(prefix)/$(STRACE_GROUPS_DIR)
 endif
 perfexec_instdir_SQ = $(subst ','\'',$(perfexec_instdir))
+STRACE_GROUPS_INSTDIR_SQ = $(subst ','\'',$(STRACE_GROUPS_INSTDIR))
 
 # If we install to $(HOME) we keep the traceevent default:
 # $(HOME)/.traceevent/plugins
@@ -713,6 +718,7 @@ $(call detected_var,htmldir_SQ)
 $(call detected_var,infodir_SQ)
 $(call detected_var,mandir_SQ)
 $(call detected_var,ETC_PERFCONFIG_SQ)
+$(call detected_var,STRACE_GROUPS_DIR_SQ)
 $(call detected_var,prefix_SQ)
 $(call detected_var,perfexecdir_SQ)
 $(call detected_var,LIBDIR)

tools/perf/trace/strace/groups/file

+access
+chmod
+creat
+execve
+faccessat
+getcwd
+lstat
+mkdir
+open
+openat
+quotactl
+readlink
+rename
+rmdir
+stat
+statfs
+symlink
+unlink