Merge branch 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf update from Ingo Molnar:
 "Lots of changes in this cycle as well, with hundreds of commits from
  over 30 contributors.  Most of the activity was on the tooling side.

  Higher level changes:

   - New 'perf kvm' analysis tool, from Xiao Guangrong.

   - New 'perf trace' system-wide tracing tool

   - uprobes fixes + cleanups from Oleg Nesterov.

   - Lots of patches to make perf build on Android out of box, from
     Irina Tirdea

   - Extend ftrace function tracing utility to be more dynamic for its
     users.  It allows for data passing to the callback functions, as
     well as reading regs as if a breakpoint were to trigger at function
     entry.

     The main goal of this patch series was to allow kprobes to use
     ftrace as an optimized probe point when a probe is placed on an
     ftrace nop.  With lots of help from Masami Hiramatsu, and going
     through lots of iterations, we finally came up with a good
     solution.

   - Add cpumask for uncore pmu, use it in 'stat', from Yan, Zheng.

   - Various tracing updates from Steve Rostedt

   - Clean up and improve 'perf sched' performance by elliminating lots
     of needless calls to libtraceevent.

   - Event group parsing support, from Jiri Olsa

   - UI/gtk refactorings and improvements from Namhyung Kim

   - Add support for non-tracepoint events in perf script python, from
     Feng Tang

   - Add --symbols to 'script', similar to the one in 'report', from
     Feng Tang.

  Infrastructure enhancements and fixes:

   - Convert the trace builtins to use the growing evsel/evlist
     tracepoint infrastructure, removing several open coded constructs
     like switch like series of strcmp to dispatch events, etc.
     Basically what had already been showcased in 'perf sched'.

   - Add evsel constructor for tracepoints, that uses libtraceevent just
     to parse the /format events file, use it in a new 'perf test' to
     make sure the libtraceevent format parsing regressions can be more
     readily caught.

   - Some strange errors were happening in some builds, but not on the
     next, reported by several people, problem was some parser related
     files, generated during the build, didn't had proper make deps, fix
     from Eric Sandeen.

   - Introduce struct and cache information about the environment where
     a perf.data file was captured, from Namhyung Kim.

   - Fix handling of unresolved samples when --symbols is used in
     'report', from Feng Tang.

   - Add union member access support to 'probe', from Hyeoncheol Lee.

   - Fixups to die() removal, from Namhyung Kim.

   - Render fixes for the TUI, from Namhyung Kim.

   - Don't enable annotation in non symbolic view, from Namhyung Kim.

   - Fix pipe mode in 'report', from Namhyung Kim.

   - Move related stats code from stat to util/, will be used by the
     'stat' kvm tool, from Xiao Guangrong.

   - Remove die()/exit() calls from several tools.

   - Resolve vdso callchains, from Jiri Olsa

   - Don't pass const char pointers to basename, so that we can
     unconditionally use libgen.h and thus avoid ifdef BIONIC lines,
     from David Ahern

   - Refactor hist formatting so that it can be reused with the GTK
     browser, From Namhyung Kim

   - Fix build for another rbtree.c change, from Adrian Hunter.

   - Make 'perf diff' command work with evsel hists, from Jiri Olsa.

   - Use the only field_sep var that is set up: symbol_conf.field_sep,
     fix from Jiri Olsa.

   - .gitignore compiled python binaries, from Namhyung Kim.

   - Get rid of die() in more libtraceevent places, from Namhyung Kim.

   - Rename libtraceevent 'private' struct member to 'priv' so that it
     works in C++, from Steven Rostedt

   - Remove lots of exit()/die() calls from tools so that the main perf
     exit routine can take place, from David Ahern

   - Fix x86 build on x86-64, from David Ahern.

   - {int,str,rb}list fixes from Suzuki K Poulose

   - perf.data header fixes from Namhyung Kim

   - Allow user to indicate objdump path, needed in cross environments,
     from Maciek Borzecki

   - Fix hardware cache event name generation, fix from Jiri Olsa

   - Add round trip test for sw, hw and cache event names, catching the
     problem Jiri fixed, after Jiri's patch, the test passes
     successfully.

   - Clean target should do clean for lib/traceevent too, fix from David
     Ahern

   - Check the right variable for allocation failure, fix from Namhyung
     Kim

   - Set up evsel->tp_format regardless of evsel->name being set
     already, fix from Namhyung Kim

   - Oprofile fixes from Robert Richter.

   - Remove perf_event_attr needless version inflation, from Jiri Olsa

   - Introduce libtraceevent strerror like error reporting facility,
     from Namhyung Kim

   - Add pmu mappings to perf.data header and use event names from cmd
     line, from Robert Richter

   - Fix include order for bison/flex-generated C files, from Ben
     Hutchings

   - Build fixes and documentation corrections from David Ahern

   - Assorted cleanups from Robert Richter

   - Let O= makes handle relative paths, from Steven Rostedt

   - perf script python fixes, from Feng Tang.

   - Initial bash completion support, from Frederic Weisbecker

   - Allow building without libelf, from Namhyung Kim.

   - Support DWARF CFI based unwind to have callchains when %bp based
     unwinding is not possible, from Jiri Olsa.

   - Symbol resolution fixes, while fixing support PPC64 files with an
     .opt ELF section was the end goal, several fixes for code that
     handles all architectures and cleanups are included, from Cody
     Schafer.

   - Assorted fixes for Documentation and build in 32 bit, from Robert
     Richter

   - Cache the libtraceevent event_format associated to each evsel
     early, so that we avoid relookups, i.e.  calling pevent_find_event
     repeatedly when processing tracepoint events.

     [ This is to reduce the surface contact with libtraceevents and
        make clear what is that the perf tools needs from that lib: so
        far parsing the common and per event fields.  ]

   - Don't stop the build if the audit libraries are not installed, fix
     from Namhyung Kim.

   - Fix bfd.h/libbfd detection with recent binutils, from Markus
     Trippelsdorf.

   - Improve warning message when libunwind devel packages not present,
     from Jiri Olsa"

* 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (282 commits)
  perf trace: Add aliases for some syscalls
  perf probe: Print an enum type variable in "enum variable-name" format when showing accessible variables
  perf tools: Check libaudit availability for perf-trace builtin
  perf hists: Add missing period_* fields when collapsing a hist entry
  perf trace: New tool
  perf evsel: Export the event_format constructor
  perf evsel: Introduce rawptr() method
  perf tools: Use perf_evsel__newtp in the event parser
  perf evsel: The tracepoint constructor should store sys:name
  perf evlist: Introduce set_filter() method
  perf evlist: Renane set_filters method to apply_filters
  perf test: Add test to check we correctly parse and match syscall open parms
  perf evsel: Handle endianity in intval method
  perf evsel: Know if byte swap is needed
  perf tools: Allow handling a NULL cpu_map as meaning "all cpus"
  perf evsel: Improve tracepoint constructor setup
  tools lib traceevent: Fix error path on pevent_parse_event
  perf test: Fix build failure
  trace: Move trace event enable from fs_initcall to core_initcall
  tracing: Add an option for disabling markers
  ...

1 files changed, 173 insertions, 81 deletions

diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index 74a5af4d33ec..aed38e4b9dfa 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -239,8 +239,11 @@ const char *event_type(int type)
         return "unknown";
 }
 
-static int add_event(struct list_head **_list, int *idx,
-                     struct perf_event_attr *attr, char *name)
+
+
+static int __add_event(struct list_head **_list, int *idx,
+                       struct perf_event_attr *attr,
+                       char *name, struct cpu_map *cpus)
 {
         struct perf_evsel *evsel;
         struct list_head *list = *_list;
@@ -260,6 +263,7 @@ static int add_event(struct list_head **_list, int *idx,
                 return -ENOMEM;
         }
 
+        evsel->cpus = cpus;
         if (name)
                 evsel->name = strdup(name);
         list_add_tail(&evsel->node, list);
@@ -267,6 +271,12 @@ static int add_event(struct list_head **_list, int *idx,
         return 0;
 }
 
+static int add_event(struct list_head **_list, int *idx,
+                     struct perf_event_attr *attr, char *name)
+{
+        return __add_event(_list, idx, attr, name, NULL);
+}
+
 static int parse_aliases(char *str, const char *names[][PERF_EVSEL__MAX_ALIASES], int size)
 {
         int i, j;
@@ -308,7 +318,7 @@ int parse_events_add_cache(struct list_head **list, int *idx,
         for (i = 0; (i < 2) && (op_result[i]); i++) {
                 char *str = op_result[i];
 
-                snprintf(name + n, MAX_NAME_LEN - n, "-%s\n", str);
+                n += snprintf(name + n, MAX_NAME_LEN - n, "-%s", str);
 
                 if (cache_op == -1) {
                         cache_op = parse_aliases(str, perf_evsel__hw_cache_op,
@@ -346,42 +356,28 @@ int parse_events_add_cache(struct list_head **list, int *idx,
         return add_event(list, idx, &attr, name);
 }
 
-static int add_tracepoint(struct list_head **list, int *idx,
+static int add_tracepoint(struct list_head **listp, int *idx,
                           char *sys_name, char *evt_name)
 {
-        struct perf_event_attr attr;
-        char name[MAX_NAME_LEN];
-        char evt_path[MAXPATHLEN];
-        char id_buf[4];
-        u64 id;
-        int fd;
-
-        snprintf(evt_path, MAXPATHLEN, "%s/%s/%s/id", tracing_events_path,
-                 sys_name, evt_name);
-
-        fd = open(evt_path, O_RDONLY);
-        if (fd < 0)
-                return -1;
+        struct perf_evsel *evsel;
+        struct list_head *list = *listp;
 
-        if (read(fd, id_buf, sizeof(id_buf)) < 0) {
-                close(fd);
-                return -1;
+        if (!list) {
+                list = malloc(sizeof(*list));
+                if (!list)
+                        return -ENOMEM;
+                INIT_LIST_HEAD(list);
         }
 
-        close(fd);
-        id = atoll(id_buf);
-
-        memset(&attr, 0, sizeof(attr));
-        attr.config = id;
-        attr.type = PERF_TYPE_TRACEPOINT;
-        attr.sample_type |= PERF_SAMPLE_RAW;
-        attr.sample_type |= PERF_SAMPLE_TIME;
-        attr.sample_type |= PERF_SAMPLE_CPU;
-        attr.sample_type |= PERF_SAMPLE_PERIOD;
-        attr.sample_period = 1;
+        evsel = perf_evsel__newtp(sys_name, evt_name, (*idx)++);
+        if (!evsel) {
+                free(list);
+                return -ENOMEM;
+        }
 
-        snprintf(name, MAX_NAME_LEN, "%s:%s", sys_name, evt_name);
-        return add_event(list, idx, &attr, name);
+        list_add_tail(&evsel->node, list);
+        *listp = list;
+        return 0;
 }
 
 static int add_tracepoint_multi(struct list_head **list, int *idx,
@@ -551,7 +547,7 @@ static int config_attr(struct perf_event_attr *attr,
 }
 
 int parse_events_add_numeric(struct list_head **list, int *idx,
-                             unsigned long type, unsigned long config,
+                             u32 type, u64 config,
                              struct list_head *head_config)
 {
         struct perf_event_attr attr;
@@ -607,8 +603,23 @@ int parse_events_add_pmu(struct list_head **list, int *idx,
         if (perf_pmu__config(pmu, &attr, head_config))
                 return -EINVAL;
 
-        return add_event(list, idx, &attr,
-                         pmu_event_name(head_config));
+        return __add_event(list, idx, &attr, pmu_event_name(head_config),
+                           pmu->cpus);
+}
+
+int parse_events__modifier_group(struct list_head *list,
+                                 char *event_mod)
+{
+        return parse_events__modifier_event(list, event_mod, true);
+}
+
+void parse_events__set_leader(char *name, struct list_head *list)
+{
+        struct perf_evsel *leader;
+
+        __perf_evlist__set_leader(list);
+        leader = list_entry(list->next, struct perf_evsel, node);
+        leader->group_name = name ? strdup(name) : NULL;
 }
 
 void parse_events_update_lists(struct list_head *list_event,
@@ -616,21 +627,45 @@ void parse_events_update_lists(struct list_head *list_event,
 {
         /*
          * Called for single event definition. Update the
-         * 'all event' list, and reinit the 'signle event'
+         * 'all event' list, and reinit the 'single event'
          * list, for next event definition.
          */
         list_splice_tail(list_event, list_all);
         free(list_event);
 }
 
-int parse_events_modifier(struct list_head *list, char *str)
+struct event_modifier {
+        int eu;
+        int ek;
+        int eh;
+        int eH;
+        int eG;
+        int precise;
+        int exclude_GH;
+};
+
+static int get_event_modifier(struct event_modifier *mod, char *str,
+                               struct perf_evsel *evsel)
 {
-        struct perf_evsel *evsel;
-        int exclude = 0, exclude_GH = 0;
-        int eu = 0, ek = 0, eh = 0, eH = 0, eG = 0, precise = 0;
+        int eu = evsel ? evsel->attr.exclude_user : 0;
+        int ek = evsel ? evsel->attr.exclude_kernel : 0;
+        int eh = evsel ? evsel->attr.exclude_hv : 0;
+        int eH = evsel ? evsel->attr.exclude_host : 0;
+        int eG = evsel ? evsel->attr.exclude_guest : 0;
+        int precise = evsel ? evsel->attr.precise_ip : 0;
 
-        if (str == NULL)
-                return 0;
+        int exclude = eu | ek | eh;
+        int exclude_GH = evsel ? evsel->exclude_GH : 0;
+
+        /*
+         * We are here for group and 'GH' was not set as event
+         * modifier and whatever event/group modifier override
+         * default 'GH' setup.
+         */
+        if (evsel && !exclude_GH)
+                eH = eG = 0;
+
+        memset(mod, 0, sizeof(*mod));
 
         while (*str) {
                 if (*str == 'u') {
@@ -674,13 +709,51 @@ int parse_events_modifier(struct list_head *list, char *str)
         if (precise > 3)
                 return -EINVAL;
 
+        mod->eu = eu;
+        mod->ek = ek;
+        mod->eh = eh;
+        mod->eH = eH;
+        mod->eG = eG;
+        mod->precise = precise;
+        mod->exclude_GH = exclude_GH;
+        return 0;
+}
+
+int parse_events__modifier_event(struct list_head *list, char *str, bool add)
+{
+        struct perf_evsel *evsel;
+        struct event_modifier mod;
+
+        if (str == NULL)
+                return 0;
+
+        if (!add && get_event_modifier(&mod, str, NULL))
+                return -EINVAL;
+
         list_for_each_entry(evsel, list, node) {
-                evsel->attr.exclude_user   = eu;
-                evsel->attr.exclude_kernel = ek;
-                evsel->attr.exclude_hv     = eh;
-                evsel->attr.precise_ip     = precise;
-                evsel->attr.exclude_host   = eH;
-                evsel->attr.exclude_guest  = eG;
+
+                if (add && get_event_modifier(&mod, str, evsel))
+                        return -EINVAL;
+
+                evsel->attr.exclude_user   = mod.eu;
+                evsel->attr.exclude_kernel = mod.ek;
+                evsel->attr.exclude_hv     = mod.eh;
+                evsel->attr.precise_ip     = mod.precise;
+                evsel->attr.exclude_host   = mod.eH;
+                evsel->attr.exclude_guest  = mod.eG;
+                evsel->exclude_GH          = mod.exclude_GH;
+        }
+
+        return 0;
+}
+
+int parse_events_name(struct list_head *list, char *name)
+{
+        struct perf_evsel *evsel;
+
+        list_for_each_entry(evsel, list, node) {
+                if (!evsel->name)
+                        evsel->name = strdup(name);
         }
 
         return 0;
@@ -730,7 +803,8 @@ int parse_events_terms(struct list_head *terms, const char *str)
         return ret;
 }
 
-int parse_events(struct perf_evlist *evlist, const char *str, int unset __used)
+int parse_events(struct perf_evlist *evlist, const char *str,
+                 int unset __maybe_unused)
 {
         struct parse_events_data__events data = {
                 .list = LIST_HEAD_INIT(data.list),
@@ -756,20 +830,20 @@ int parse_events(struct perf_evlist *evlist, const char *str, int unset __used)
 }
 
 int parse_events_option(const struct option *opt, const char *str,
-                        int unset __used)
+                        int unset __maybe_unused)
 {
         struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
         return parse_events(evlist, str, unset);
 }
 
 int parse_filter(const struct option *opt, const char *str,
-                 int unset __used)
+                 int unset __maybe_unused)
 {
         struct perf_evlist *evlist = *(struct perf_evlist **)opt->value;
         struct perf_evsel *last = NULL;
 
         if (evlist->nr_entries > 0)
-                last = list_entry(evlist->entries.prev, struct perf_evsel, node);
+                last = perf_evlist__last(evlist);
 
         if (last == NULL || last->attr.type != PERF_TYPE_TRACEPOINT) {
                 fprintf(stderr,
@@ -799,7 +873,8 @@ static const char * const event_type_descriptors[] = {
  * Print the events from <debugfs_mount_point>/tracing/events
  */
 
-void print_tracepoint_events(const char *subsys_glob, const char *event_glob)
+void print_tracepoint_events(const char *subsys_glob, const char *event_glob,
+                             bool name_only)
 {
         DIR *sys_dir, *evt_dir;
         struct dirent *sys_next, *evt_next, sys_dirent, evt_dirent;
@@ -829,6 +904,11 @@ void print_tracepoint_events(const char *subsys_glob, const char *event_glob)
                             !strglobmatch(evt_dirent.d_name, event_glob))
                                 continue;
 
+                        if (name_only) {
+                                printf("%s:%s ", sys_dirent.d_name, evt_dirent.d_name);
+                                continue;
+                        }
+
                         snprintf(evt_path, MAXPATHLEN, "%s:%s",
                                  sys_dirent.d_name, evt_dirent.d_name);
                         printf("  %-50s [%s]\n", evt_path,
@@ -906,7 +986,7 @@ void print_events_type(u8 type)
                 __print_events_type(type, event_symbols_hw, PERF_COUNT_HW_MAX);
 }
 
-int print_hwcache_events(const char *event_glob)
+int print_hwcache_events(const char *event_glob, bool name_only)
 {
         unsigned int type, op, i, printed = 0;
         char name[64];
@@ -923,8 +1003,11 @@ int print_hwcache_events(const char *event_glob)
                                 if (event_glob != NULL && !strglobmatch(name, event_glob))
                                         continue;
 
-                                printf("  %-50s [%s]\n", name,
-                                        event_type_descriptors[PERF_TYPE_HW_CACHE]);
+                                if (name_only)
+                                        printf("%s ", name);
+                                else
+                                        printf("  %-50s [%s]\n", name,
+                                               event_type_descriptors[PERF_TYPE_HW_CACHE]);
                                 ++printed;
                         }
                 }
@@ -934,7 +1017,8 @@ int print_hwcache_events(const char *event_glob)
 }
 
 static void print_symbol_events(const char *event_glob, unsigned type,
-                                struct event_symbol *syms, unsigned max)
+                                struct event_symbol *syms, unsigned max,
+                                bool name_only)
 {
         unsigned i, printed = 0;
         char name[MAX_NAME_LEN];
@@ -946,6 +1030,11 @@ static void print_symbol_events(const char *event_glob, unsigned type,
                       (syms->alias && strglobmatch(syms->alias, event_glob))))
                         continue;
 
+                if (name_only) {
+                        printf("%s ", syms->symbol);
+                        continue;
+                }
+
                 if (strlen(syms->alias))
                         snprintf(name, MAX_NAME_LEN, "%s OR %s", syms->symbol, syms->alias);
                 else
@@ -963,39 +1052,42 @@ static void print_symbol_events(const char *event_glob, unsigned type,
 /*
  * Print the help text for the event symbols:
  */
-void print_events(const char *event_glob)
+void print_events(const char *event_glob, bool name_only)
 {
-
-        printf("\n");
-        printf("List of pre-defined events (to be used in -e):\n");
+        if (!name_only) {
+                printf("\n");
+                printf("List of pre-defined events (to be used in -e):\n");
+        }
 
         print_symbol_events(event_glob, PERF_TYPE_HARDWARE,
-                            event_symbols_hw, PERF_COUNT_HW_MAX);
+                            event_symbols_hw, PERF_COUNT_HW_MAX, name_only);
 
         print_symbol_events(event_glob, PERF_TYPE_SOFTWARE,
-                            event_symbols_sw, PERF_COUNT_SW_MAX);
+                            event_symbols_sw, PERF_COUNT_SW_MAX, name_only);
 
-        print_hwcache_events(event_glob);
+        print_hwcache_events(event_glob, name_only);
 
         if (event_glob != NULL)
                 return;
 
-        printf("\n");
-        printf("  %-50s [%s]\n",
-               "rNNN",
-               event_type_descriptors[PERF_TYPE_RAW]);
-        printf("  %-50s [%s]\n",
-               "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
-               event_type_descriptors[PERF_TYPE_RAW]);
-        printf("   (see 'perf list --help' on how to encode it)\n");
-        printf("\n");
-
-        printf("  %-50s [%s]\n",
-                        "mem:<addr>[:access]",
+        if (!name_only) {
+                printf("\n");
+                printf("  %-50s [%s]\n",
+                       "rNNN",
+                       event_type_descriptors[PERF_TYPE_RAW]);
+                printf("  %-50s [%s]\n",
+                       "cpu/t1=v1[,t2=v2,t3 ...]/modifier",
+                       event_type_descriptors[PERF_TYPE_RAW]);
+                printf("   (see 'perf list --help' on how to encode it)\n");
+                printf("\n");
+
+                printf("  %-50s [%s]\n",
+                       "mem:<addr>[:access]",
                         event_type_descriptors[PERF_TYPE_BREAKPOINT]);
-        printf("\n");
+                printf("\n");
+        }
 
-        print_tracepoint_events(NULL, NULL);
+        print_tracepoint_events(NULL, NULL, name_only);
 }
 
 int parse_events__is_hardcoded_term(struct parse_events__term *term)
@@ -1005,7 +1097,7 @@ int parse_events__is_hardcoded_term(struct parse_events__term *term)
 
 static int new_term(struct parse_events__term **_term, int type_val,
                     int type_term, char *config,
-                    char *str, long num)
+                    char *str, u64 num)
 {
         struct parse_events__term *term;
 
@@ -1034,7 +1126,7 @@ static int new_term(struct parse_events__term **_term, int type_val,
 }
 
 int parse_events__term_num(struct parse_events__term **term,
-                           int type_term, char *config, long num)
+                           int type_term, char *config, u64 num)
 {
         return new_term(term, PARSE_EVENTS__TERM_TYPE_NUM, type_term,
                         config, NULL, num);