5 files changed, 37 insertions, 20 deletions

diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt
index 976b00c6cdb1..64ed79c43639 100644
--- a/tools/perf/Documentation/perf-top.txt
+++ b/tools/perf/Documentation/perf-top.txt
@@ -123,13 +123,16 @@ Default is to monitor all CPUS.
         Show a column with the sum of periods.
 
 --dsos::
-        Only consider symbols in these dsos.
+        Only consider symbols in these dsos.  This option will affect the
+        percentage of the overhead column.  See --percentage for more info.
 
 --comms::
-        Only consider symbols in these comms.
+        Only consider symbols in these comms.  This option will affect the
+        percentage of the overhead column.  See --percentage for more info.
 
 --symbols::
-        Only consider these symbols.
+        Only consider these symbols.  This option will affect the
+        percentage of the overhead column.  See --percentage for more info.
 
 -M::
 --disassembler-style=:: Set disassembler style for objdump.
@@ -165,6 +168,15 @@ Default is to monitor all CPUS.
         Do not show entries which have an overhead under that percent.
         (Default: 0).
 
+--percentage::
+        Determine how to display the overhead percentage of filtered entries.
+        Filters can be applied by --comms, --dsos and/or --symbols options and
+        Zoom operations on the TUI (thread, dso, etc).
+
+        "relative" means it's relative to filtered entries only so that the
+        sum of shown entries will be always 100%. "absolute" means it retains
+        the original value before and after the filter is applied.
+
 INTERACTIVE PROMPTING KEYS
 --------------------------
 
diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 7ec351bda833..af8cb7a2c9b6 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -717,20 +717,6 @@ parse_percent_limit(const struct option *opt, const char *str,
         return 0;
 }
 
-static int
-parse_percentage(const struct option *opt __maybe_unused, const char *str,
-                 int unset __maybe_unused)
-{
-        if (!strcmp(str, "relative"))
-                symbol_conf.filter_relative = true;
-        else if (!strcmp(str, "absolute"))
-                symbol_conf.filter_relative = false;
-        else
-                return -1;
-
-        return 0;
-}
-
 int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
 {
         struct perf_session *session;
@@ -854,7 +840,7 @@ int cmd_report(int argc, const char **argv, const char *prefix __maybe_unused)
         OPT_CALLBACK(0, "percent-limit", &report, "percent",
                      "Don't show entries under that percent", parse_percent_limit),
         OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
-                     "how to display percentage of filtered entries", parse_percentage),
+                     "how to display percentage of filtered entries", parse_filter_percentage),
         OPT_END()
         };
         struct perf_data_file file = {
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 25269014164a..37d30460bada 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -697,8 +697,7 @@ static void perf_event__process_sample(struct perf_tool *tool,
         if (event->header.misc & PERF_RECORD_MISC_EXACT_IP)
                 top->exact_samples++;
 
-        if (perf_event__preprocess_sample(event, machine, &al, sample) < 0 ||
-            al.filtered)
+        if (perf_event__preprocess_sample(event, machine, &al, sample) < 0)
                 return;
 
         if (!top->kptr_restrict_warned &&
@@ -1119,6 +1118,8 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
         OPT_STRING('u', "uid", &target->uid_str, "user", "user to profile"),
         OPT_CALLBACK(0, "percent-limit", &top, "percent",
                      "Don't show entries under that percent", parse_percent_limit),
+        OPT_CALLBACK(0, "percentage", NULL, "relative|absolute",
+                     "How to display percentage of filtered entries", parse_filter_percentage),
         OPT_END()
         };
         const char * const top_usage[] = {
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 3ebd89a28257..3c2dd233b98e 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -943,3 +943,16 @@ u64 hists__total_period(struct hists *hists)
         return symbol_conf.filter_relative ? hists->stats.total_non_filtered_period :
                 hists->stats.total_period;
 }
+
+int parse_filter_percentage(const struct option *opt __maybe_unused,
+                            const char *arg, int unset __maybe_unused)
+{
+        if (!strcmp(arg, "relative"))
+                symbol_conf.filter_relative = true;
+        else if (!strcmp(arg, "absolute"))
+                symbol_conf.filter_relative = false;
+        else
+                return -1;
+
+        return 0;
+}
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index 3191496bd3b7..a4ec336ae3fe 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -254,4 +254,9 @@ static inline int script_browse(const char *script_opt __maybe_unused)
 #endif
 
 unsigned int hists__sort_list_width(struct hists *hists);
+
+struct option;
+int parse_filter_percentage(const struct option *opt __maybe_unused,
+                            const char *arg, int unset __maybe_unused);
+
 #endif  /* __PERF_HIST_H */