perf symbols: Record the reason for filtering an address_location

By turning the addr_location->filtered member from a boolean to a u8
bitmap, reusing (and extending) the hist_filter enum for that.

This patch doesn't change the logic at all, as it keeps the meaning of
al->filtered !0 to mean that the entry _was_ filtered, so no change in
how this value is interpreted needs to be done at this point.

This will be soon used in upcoming patches.

Signed-off-by: Namhyung Kim <namhyung.kim@lge.com>
Acked-by: Jiri Olsa <jolsa@redhat.com>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Namhyung Kim <namhyung.kim@lge.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/n/tip-89hmfgtr9t22sky1lyg7nw7l@git.kernel.org
[ yanked this out of a previous patch ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

6 files changed, 25 insertions, 17 deletions

diff --git a/tools/perf/builtin-timechart.c b/tools/perf/builtin-timechart.c
index d4991a235155..74db2568b867 100644
--- a/tools/perf/builtin-timechart.c
+++ b/tools/perf/builtin-timechart.c
@@ -494,7 +494,7 @@ static const char *cat_backtrace(union perf_event *event,
                         continue;
                 }
 
-                tal.filtered = false;
+                tal.filtered = 0;
                 thread__find_addr_location(al.thread, machine, cpumode,
                                            MAP__FUNCTION, ip, &tal);
 
diff --git a/tools/perf/util/event.c b/tools/perf/util/event.c
index 3e580be0f6fb..0da09db5f9f6 100644
--- a/tools/perf/util/event.c
+++ b/tools/perf/util/event.c
@@ -1,6 +1,7 @@
 #include <linux/types.h>
 #include "event.h"
 #include "debug.h"
+#include "hist.h"
 #include "machine.h"
 #include "sort.h"
 #include "string.h"
@@ -705,7 +706,7 @@ void thread__find_addr_map(struct thread *thread,
         al->thread = thread;
         al->addr = addr;
         al->cpumode = cpumode;
-        al->filtered = false;
+        al->filtered = 0;
 
         if (machine == NULL) {
                 al->map = NULL;
@@ -731,11 +732,11 @@ void thread__find_addr_map(struct thread *thread,
                 if ((cpumode == PERF_RECORD_MISC_GUEST_USER ||
                         cpumode == PERF_RECORD_MISC_GUEST_KERNEL) &&
                         !perf_guest)
-                        al->filtered = true;
+                        al->filtered |= (1 << HIST_FILTER__GUEST);
                 if ((cpumode == PERF_RECORD_MISC_USER ||
                         cpumode == PERF_RECORD_MISC_KERNEL) &&
                         !perf_host)
-                        al->filtered = true;
+                        al->filtered |= (1 << HIST_FILTER__HOST);
 
                 return;
         }
@@ -792,8 +793,10 @@ int perf_event__preprocess_sample(const union perf_event *event,
         if (thread == NULL)
                 return -1;
 
-        if (thread__is_filtered(thread))
+        if (thread__is_filtered(thread)) {
+                al->filtered |= (1 << HIST_FILTER__THREAD);
                 goto out_filtered;
+        }
 
         dump_printf(" ... thread: %s:%d\n", thread__comm_str(thread), thread->tid);
         /*
@@ -823,8 +826,10 @@ int perf_event__preprocess_sample(const union perf_event *event,
                                                   dso->short_name) ||
                                (dso->short_name != dso->long_name &&
                                 strlist__has_entry(symbol_conf.dso_list,
-                                                   dso->long_name)))))
+                                                   dso->long_name))))) {
+                        al->filtered |= (1 << HIST_FILTER__DSO);
                         goto out_filtered;
+                }
 
                 al->sym = map__find_symbol(al->map, al->addr,
                                            machine->symbol_filter);
@@ -832,12 +837,13 @@ int perf_event__preprocess_sample(const union perf_event *event,
 
         if (symbol_conf.sym_list &&
                 (!al->sym || !strlist__has_entry(symbol_conf.sym_list,
-                                                al->sym->name)))
+                                                al->sym->name))) {
+                al->filtered |= (1 << HIST_FILTER__SYMBOL);
                 goto out_filtered;
+        }
 
         return 0;
 
 out_filtered:
-        al->filtered = true;
         return 0;
 }
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 0466efa71140..9507f33b02ff 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -13,13 +13,6 @@ static bool hists__filter_entry_by_thread(struct hists *hists,
 static bool hists__filter_entry_by_symbol(struct hists *hists,
                                           struct hist_entry *he);
 
-enum hist_filter {
-        HIST_FILTER__DSO,
-        HIST_FILTER__THREAD,
-        HIST_FILTER__PARENT,
-        HIST_FILTER__SYMBOL,
-};
-
 struct callchain_param  callchain_param = {
         .mode   = CHAIN_GRAPH_REL,
         .min_percent = 0.5,
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 0c76bf972736..1f1f513dfe7f 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -14,6 +14,15 @@ struct hist_entry;
 struct addr_location;
 struct symbol;
 
+enum hist_filter {
+        HIST_FILTER__DSO,
+        HIST_FILTER__THREAD,
+        HIST_FILTER__PARENT,
+        HIST_FILTER__SYMBOL,
+        HIST_FILTER__GUEST,
+        HIST_FILTER__HOST,
+};
+
 /*
  * The kernel collects the number of events it couldn't send in a stretch and
  * when possible sends this number in a PERF_RECORD_LOST event. The number of
diff --git a/tools/perf/util/machine.c b/tools/perf/util/machine.c
index 5cecd98c1bc0..d280bf210183 100644
--- a/tools/perf/util/machine.c
+++ b/tools/perf/util/machine.c
@@ -1312,7 +1312,7 @@ static int machine__resolve_callchain_sample(struct machine *machine,
                         continue;
                 }
 
-                al.filtered = false;
+                al.filtered = 0;
                 thread__find_addr_location(thread, machine, cpumode,
                                            MAP__FUNCTION, ip, &al);
                 if (al.sym != NULL) {
diff --git a/tools/perf/util/symbol.h b/tools/perf/util/symbol.h
index 2553ae04b788..501e4e722e8e 100644
--- a/tools/perf/util/symbol.h
+++ b/tools/perf/util/symbol.h
@@ -186,7 +186,7 @@ struct addr_location {
         struct symbol *sym;
         u64           addr;
         char          level;
-        bool          filtered;
+        u8            filtered;
         u8            cpumode;
         s32           cpu;
 };