linux-kernel - [tip:perf/urgent] perf session: Add missing swap ops for namespace events

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Date:   Tue, 28 May 2019 14:28:19 -0700
From:   tip-bot for Namhyung Kim <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     jolsa@...hat.com, tglx@...utronix.de, acme@...hat.com,
        linux-kernel@...r.kernel.org, hpa@...or.com,
        hbathini@...ux.vnet.ibm.com, kjlx@...pleofstupid.com,
        mingo@...nel.org, namhyung@...nel.org
Subject: [tip:perf/urgent] perf session: Add missing swap ops for namespace
 events

Commit-ID:  acd244b84b80d53fa2cee98659b55d3f09b4f5a7
Gitweb:     https://git.kernel.org/tip/acd244b84b80d53fa2cee98659b55d3f09b4f5a7
Author:     Namhyung Kim <namhyung@...nel.org>
AuthorDate: Wed, 22 May 2019 14:32:49 +0900
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Tue, 28 May 2019 09:52:23 -0300

perf session: Add missing swap ops for namespace events

In case it's recorded in a different arch.

Signed-off-by: Namhyung Kim <namhyung@...nel.org>
Cc: Hari Bathini <hbathini@...ux.vnet.ibm.com> <hbathini@...ux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Krister Johansen <kjlx@...pleofstupid.com>
Fixes: f3b3614a284d ("perf tools: Add PERF_RECORD_NAMESPACES to include namespaces related info")
Link: http://lkml.kernel.org/r/20190522053250.207156-3-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/util/session.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
index 2310a1752983..54cf163347f7 100644
--- a/tools/perf/util/session.c
+++ b/tools/perf/util/session.c
@@ -647,6 +647,26 @@ static void perf_event__throttle_swap(union perf_event *event,
 		swap_sample_id_all(event, &event->throttle + 1);
 }
 
+static void perf_event__namespaces_swap(union perf_event *event,
+					bool sample_id_all)
+{
+	u64 i;
+
+	event->namespaces.pid		= bswap_32(event->namespaces.pid);
+	event->namespaces.tid		= bswap_32(event->namespaces.tid);
+	event->namespaces.nr_namespaces	= bswap_64(event->namespaces.nr_namespaces);
+
+	for (i = 0; i < event->namespaces.nr_namespaces; i++) {
+		struct perf_ns_link_info *ns = &event->namespaces.link_info[i];
+
+		ns->dev = bswap_64(ns->dev);
+		ns->ino = bswap_64(ns->ino);
+	}
+
+	if (sample_id_all)
+		swap_sample_id_all(event, &event->namespaces.link_info[i]);
+}
+
 static u8 revbyte(u8 b)
 {
 	int rev = (b >> 4) | ((b & 0xf) << 4);
@@ -887,6 +907,7 @@ static perf_event__swap_op perf_event__swap_ops[] = {
 	[PERF_RECORD_LOST_SAMPLES]	  = perf_event__all64_swap,
 	[PERF_RECORD_SWITCH]		  = perf_event__switch_swap,
 	[PERF_RECORD_SWITCH_CPU_WIDE]	  = perf_event__switch_swap,
+	[PERF_RECORD_NAMESPACES]	  = perf_event__namespaces_swap,
 	[PERF_RECORD_HEADER_ATTR]	  = perf_event__hdr_attr_swap,
 	[PERF_RECORD_HEADER_EVENT_TYPE]	  = perf_event__event_type_swap,
 	[PERF_RECORD_HEADER_TRACING_DATA] = perf_event__tracing_data_swap,