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Date: Tue, 18 Aug 2015 05:25:40 -0400
From: kan.liang@...el.com
To: acme@...nel.org
Cc: a.p.zijlstra@...llo.nl, mingo@...hat.com, jolsa@...nel.org,
namhyung@...nel.org, ak@...ux.intel.com, eranian@...gle.com,
linux-kernel@...r.kernel.org, Kan Liang <kan.liang@...el.com>
Subject: [PATCH RFC 04/10] perf,tools: Add 'N' event/group modifier
From: Kan Liang <kan.liang@...el.com>
Add a new event/group modifier 'N' to mark the event which will be read
counter statistics during sampling.
Signed-off-by: Kan Liang <kan.liang@...el.com>
---
tools/perf/util/evsel.h | 1 +
tools/perf/util/parse-events.c | 8 +++++++-
tools/perf/util/parse-events.l | 2 +-
3 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 93ac6b1..e5ced73 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -110,6 +110,7 @@ struct perf_evsel {
int exclude_GH;
int nr_members;
int sample_read;
+ int stat_read;
unsigned long *per_pkg_mask;
struct perf_evsel *leader;
char *group_name;
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index d826e6f..a322b60 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -821,6 +821,7 @@ struct event_modifier {
int precise;
int exclude_GH;
int sample_read;
+ int stat_read;
int pinned;
};
@@ -835,6 +836,7 @@ static int get_event_modifier(struct event_modifier *mod, char *str,
int eI = evsel ? evsel->attr.exclude_idle : 0;
int precise = evsel ? evsel->attr.precise_ip : 0;
int sample_read = 0;
+ int stat_read = 0;
int pinned = evsel ? evsel->attr.pinned : 0;
int exclude = eu | ek | eh;
@@ -872,6 +874,8 @@ static int get_event_modifier(struct event_modifier *mod, char *str,
eG = 1;
} else if (*str == 'S') {
sample_read = 1;
+ } else if (*str == 'N') {
+ stat_read = 1;
} else if (*str == 'D') {
pinned = 1;
} else
@@ -902,6 +906,7 @@ static int get_event_modifier(struct event_modifier *mod, char *str,
mod->precise = precise;
mod->exclude_GH = exclude_GH;
mod->sample_read = sample_read;
+ mod->stat_read = stat_read;
mod->pinned = pinned;
return 0;
@@ -916,7 +921,7 @@ static int check_modifier(char *str)
char *p = str;
/* The sizeof includes 0 byte as well. */
- if (strlen(str) > (sizeof("ukhGHpppSDI") - 1))
+ if (strlen(str) > (sizeof("ukhGHpppSNDI") - 1))
return -1;
while (*p) {
@@ -955,6 +960,7 @@ int parse_events__modifier_event(struct list_head *list, char *str, bool add)
evsel->attr.exclude_idle = mod.eI;
evsel->exclude_GH = mod.exclude_GH;
evsel->sample_read = mod.sample_read;
+ evsel->stat_read = mod.stat_read;
if (perf_evsel__is_group_leader(evsel))
evsel->attr.pinned = mod.pinned;
diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l
index 936d566..de2dd4b 100644
--- a/tools/perf/util/parse-events.l
+++ b/tools/perf/util/parse-events.l
@@ -122,7 +122,7 @@ num_raw_hex [a-fA-F0-9]+
name [a-zA-Z_*?][a-zA-Z0-9_*?.]*
name_minus [a-zA-Z_*?][a-zA-Z0-9\-_*?.]*
/* If you add a modifier you need to update check_modifier() */
-modifier_event [ukhpGHSDI]+
+modifier_event [ukhpGHSNDI]+
modifier_bp [rwx]{1,3}
%%
--
1.8.3.1
--
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