linux-kernel - [PATCH 10/52] perf tools: Add dso__data_status

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

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1406035081-14301-11-git-send-email-adrian.hunter@intel.com>
Date:	Tue, 22 Jul 2014 16:17:19 +0300
From:	Adrian Hunter <adrian.hunter@...el.com>
To:	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	Peter Zijlstra <peterz@...radead.org>,
	linux-kernel@...r.kernel.org, David Ahern <dsahern@...il.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	Jiri Olsa <jolsa@...hat.com>,
	Namhyung Kim <namhyung@...il.com>,
	Paul Mackerras <paulus@...ba.org>,
	Stephane Eranian <eranian@...gle.com>
Subject: [PATCH 10/52] perf tools: Add dso__data_status_seen()

Add a function to track whether a caller has seen
the data status of a dso.  This is needed to
enable callers to report the error exactly once
only per dso.

Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>
---
 tools/perf/util/dso.c | 12 ++++++++++++
 tools/perf/util/dso.h |  6 ++++++
 2 files changed, 18 insertions(+)

diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c
index 8827db3..84e4a05 100644
--- a/tools/perf/util/dso.c
+++ b/tools/perf/util/dso.c
@@ -359,6 +359,18 @@ out:
 	return dso->data.fd;
 }
 
+bool dso__data_status_seen(struct dso *dso, enum dso_data_status_seen by)
+{
+	u32 flag = 1 << by;
+
+	if (dso->data.status_seen & flag)
+		return true;
+
+	dso->data.status_seen |= flag;
+
+	return false;
+}
+
 static void
 dso_cache__free(struct rb_root *root)
 {
diff --git a/tools/perf/util/dso.h b/tools/perf/util/dso.h
index aeb7bcb..c805f60 100644
--- a/tools/perf/util/dso.h
+++ b/tools/perf/util/dso.h
@@ -46,6 +46,10 @@ enum dso_data_status {
 	DSO_DATA_STATUS_OK	= 1,
 };
 
+enum dso_data_status_seen {
+	DSO_DATA_STATUS_SEEN_ITRACE,
+};
+
 #define DSO__SWAP(dso, type, val)			\
 ({							\
 	type ____r = val;				\
@@ -111,6 +115,7 @@ struct dso {
 		struct rb_root	 cache;
 		int		 fd;
 		int		 status;
+		u32		 status_seen;
 		size_t		 file_size;
 		struct list_head open_entry;
 	} data;
@@ -203,6 +208,7 @@ ssize_t dso__data_read_offset(struct dso *dso, struct machine *machine,
 ssize_t dso__data_read_addr(struct dso *dso, struct map *map,
 			    struct machine *machine, u64 addr,
 			    u8 *data, ssize_t size);
+bool dso__data_status_seen(struct dso *dso, enum dso_data_status_seen by);
 
 struct map *dso__new_map(const char *name);
 struct dso *dso__kernel_findnew(struct machine *machine, const char *name,
-- 
1.8.3.2

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/