| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Date: Wed, 5 Dec 2018 17:05:06 +0100
From: Jiri Olsa <jolsa@...nel.org>
To: Arnaldo Carvalho de Melo <acme@...nel.org>,
Steven Rostedt <rostedt@...dmis.org>,
Peter Zijlstra <a.p.zijlstra@...llo.nl>
Cc: lkml <linux-kernel@...r.kernel.org>,
Ingo Molnar <mingo@...nel.org>,
Namhyung Kim <namhyung@...nel.org>,
Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
Thomas Gleixner <tglx@...utronix.de>,
"Luis Claudio R. Goncalves" <lclaudio@...g.org>, ldv@...linux.org,
esyr@...hat.com, Frederic Weisbecker <fweisbec@...il.com>
Subject: [PATCH 5/8] perf tools: Add block term support for tracepoints
Allow to specify 'block' term for tracepoint in the -e command
line option, like:
# perf record -e raw_syscalls:sys_enter/block/ -p ...
# perf trace -e raw_syscalls:sys_enter/block/ -p ...
to set this tracepoint as blocking (sets struct perf_event_attr::block)
It's allowed only for syscall tracepoint events
attached to process.
Link: http://lkml.kernel.org/n/tip-jj5uwlt3izp1gpk8jcspulze@git.kernel.org
Signed-off-by: Jiri Olsa <jolsa@...nel.org>
---
tools/perf/util/evsel.c | 4 ++++
tools/perf/util/evsel.h | 2 ++
tools/perf/util/parse-events.c | 8 ++++++++
tools/perf/util/parse-events.h | 1 +
tools/perf/util/parse-events.l | 1 +
5 files changed, 16 insertions(+)
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index e4943e8f811b..886b0dbec534 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -811,6 +811,9 @@ static void apply_config_terms(struct perf_evsel *evsel,
break;
case PERF_EVSEL__CONFIG_TERM_DRV_CFG:
break;
+ case PERF_EVSEL__CONFIG_TERM_BLOCK:
+ attr->block = term->val.block ? 1 : 0;
+ break;
default:
break;
}
@@ -1655,6 +1658,7 @@ int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr,
PRINT_ATTRf(context_switch, p_unsigned);
PRINT_ATTRf(write_backward, p_unsigned);
PRINT_ATTRf(namespaces, p_unsigned);
+ PRINT_ATTRf(block, p_unsigned);
PRINT_ATTRn("{ wakeup_events, wakeup_watermark }", wakeup_events, p_unsigned);
PRINT_ATTRf(bp_type, p_unsigned);
diff --git a/tools/perf/util/evsel.h b/tools/perf/util/evsel.h
index 82a289ce8b0c..c5d11035a21b 100644
--- a/tools/perf/util/evsel.h
+++ b/tools/perf/util/evsel.h
@@ -50,6 +50,7 @@ enum term_type {
PERF_EVSEL__CONFIG_TERM_OVERWRITE,
PERF_EVSEL__CONFIG_TERM_DRV_CFG,
PERF_EVSEL__CONFIG_TERM_BRANCH,
+ PERF_EVSEL__CONFIG_TERM_BLOCK,
};
struct perf_evsel_config_term {
@@ -67,6 +68,7 @@ struct perf_evsel_config_term {
bool overwrite;
char *branch;
unsigned long max_events;
+ bool block;
} val;
bool weak;
};
diff --git a/tools/perf/util/parse-events.c b/tools/perf/util/parse-events.c
index caecd2d9494a..6b6e70f1ae1f 100644
--- a/tools/perf/util/parse-events.c
+++ b/tools/perf/util/parse-events.c
@@ -930,6 +930,7 @@ static const char *config_term_names[__PARSE_EVENTS__TERM_TYPE_NR] = {
[PARSE_EVENTS__TERM_TYPE_OVERWRITE] = "overwrite",
[PARSE_EVENTS__TERM_TYPE_NOOVERWRITE] = "no-overwrite",
[PARSE_EVENTS__TERM_TYPE_DRV_CFG] = "driver-config",
+ [PARSE_EVENTS__TERM_TYPE_BLOCK] = "block",
};
static bool config_term_shrinked;
@@ -1041,6 +1042,9 @@ do { \
case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
CHECK_TYPE_VAL(NUM);
break;
+ case PARSE_EVENTS__TERM_TYPE_BLOCK:
+ CHECK_TYPE_VAL(NUM);
+ break;
default:
err->str = strdup("unknown term");
err->idx = term->err_term;
@@ -1091,6 +1095,7 @@ static int config_term_tracepoint(struct perf_event_attr *attr,
case PARSE_EVENTS__TERM_TYPE_MAX_EVENTS:
case PARSE_EVENTS__TERM_TYPE_OVERWRITE:
case PARSE_EVENTS__TERM_TYPE_NOOVERWRITE:
+ case PARSE_EVENTS__TERM_TYPE_BLOCK:
return config_term_common(attr, term, err);
default:
if (err) {
@@ -1179,6 +1184,9 @@ do { \
case PARSE_EVENTS__TERM_TYPE_DRV_CFG:
ADD_CONFIG_TERM(DRV_CFG, drv_cfg, term->val.str);
break;
+ case PARSE_EVENTS__TERM_TYPE_BLOCK:
+ ADD_CONFIG_TERM(BLOCK, block, term->val.num ? 1 : 0);
+ break;
default:
break;
}
diff --git a/tools/perf/util/parse-events.h b/tools/perf/util/parse-events.h
index 5ed035cbcbb7..204f4bf1c62a 100644
--- a/tools/perf/util/parse-events.h
+++ b/tools/perf/util/parse-events.h
@@ -75,6 +75,7 @@ enum {
PARSE_EVENTS__TERM_TYPE_NOOVERWRITE,
PARSE_EVENTS__TERM_TYPE_OVERWRITE,
PARSE_EVENTS__TERM_TYPE_DRV_CFG,
+ PARSE_EVENTS__TERM_TYPE_BLOCK,
__PARSE_EVENTS__TERM_TYPE_NR,
};
diff --git a/tools/perf/util/parse-events.l b/tools/perf/util/parse-events.l
index 7805c71aaae2..69141fb38347 100644
--- a/tools/perf/util/parse-events.l
+++ b/tools/perf/util/parse-events.l
@@ -274,6 +274,7 @@ inherit { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_INHERIT); }
no-inherit { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NOINHERIT); }
overwrite { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_OVERWRITE); }
no-overwrite { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_NOOVERWRITE); }
+block { return term(yyscanner, PARSE_EVENTS__TERM_TYPE_BLOCK); }
, { return ','; }
"/" { BEGIN(INITIAL); return '/'; }
{name_minus} { return str(yyscanner, PE_NAME); }
--
2.17.2
Powered by blists - more mailing lists