lttng-tools: sessiond: disable: match app event by name

Get upstream patch from lttng-tools github:
<https://github.com/lttng/lttng-tools>
<commit:700c5a9d4dc7b552926b8ddcbba91cc13312aba0>,
for solving the filtered tracepoint disabling error.

The use of a simple lookup and match on event name is insufficient
to identify the corresponding ust app event.

(From OE-Core rev: 60f8c0e679f70f4477472d7895fddff12530a929)

Signed-off-by: Li Zhou <li.zhou@windriver.com>
Signed-off-by: Ross Burton <ross.burton@intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 59 insertions, 0 deletions

diff --git a/meta/recipes-kernel/lttng/lttng-tools/0001-Fix-sessiond-disable-match-app-event-by-name.patch b/meta/recipes-kernel/lttng/lttng-tools/0001-Fix-sessiond-disable-match-app-event-by-name.patch
new file mode 100644
index 0000000000..ac1f34bfaa
--- /dev/null
+++ b/meta/recipes-kernel/lttng/lttng-tools/0001-Fix-sessiond-disable-match-app-event-by-name.patch
@@ -0,0 +1,58 @@
+From 700c5a9d4dc7b552926b8ddcbba91cc13312aba0 Mon Sep 17 00:00:00 2001
+From: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
+Date: Wed, 9 Sep 2015 17:08:20 -0400
+Subject: [PATCH] Fix: sessiond: disable: match app event by name
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+The use of a simple lookup and match on event name is insufficient
+to identify the corresponding ust app event.
+
+Fixes #914
+
+Signed-off-by: Jonathan Rajotte <jonathan.rajotte-julien@efficios.com>
+Signed-off-by: Jérémie Galarneau <jeremie.galarneau@efficios.com>
+
+Upstream-Status: Backport
+
+Signed-off-by: Li Zhou <li.zhou@windriver.com>
+---
+ src/bin/lttng-sessiond/ust-app.c |   10 +++++-----
+ 1 file changed, 5 insertions(+), 5 deletions(-)
+
+diff --git a/src/bin/lttng-sessiond/ust-app.c b/src/bin/lttng-sessiond/ust-app.c
+index 4066b06..53a6f93 100644
+--- a/src/bin/lttng-sessiond/ust-app.c
++++ b/src/bin/lttng-sessiond/ust-app.c
+@@ -3873,7 +3873,7 @@ int ust_app_disable_event_glb(struct ltt_ust_session *usess,
+ {
+        int ret = 0;
+        struct lttng_ht_iter iter, uiter;
+-       struct lttng_ht_node_str *ua_chan_node, *ua_event_node;
++       struct lttng_ht_node_str *ua_chan_node;
+        struct ust_app *app;
+        struct ust_app_session *ua_sess;
+        struct ust_app_channel *ua_chan;
+@@ -3910,14 +3910,14 @@ int ust_app_disable_event_glb(struct ltt_ust_session *usess,
+                }
+                ua_chan = caa_container_of(ua_chan_node, struct ust_app_channel, node);
+ 
+-               lttng_ht_lookup(ua_chan->events, (void *)uevent->attr.name, &uiter);
+-               ua_event_node = lttng_ht_iter_get_node_str(&uiter);
+-               if (ua_event_node == NULL) {
++               ua_event = find_ust_app_event(ua_chan->events, uevent->attr.name,
++                               uevent->filter, uevent->attr.loglevel,
++                               uevent->exclusion);
++               if (ua_event == NULL) {
+                        DBG2("Event %s not found in channel %s for app pid %d."
+                                        "Skipping", uevent->attr.name, uchan->name, app->pid);
+                        continue;
+                }
+-               ua_event = caa_container_of(ua_event_node, struct ust_app_event, node);
+ 
+                ret = disable_ust_app_event(ua_sess, ua_event, app);
+                if (ret < 0) {
+-- 
+1.7.9.5
+
diff --git a/meta/recipes-kernel/lttng/lttng-tools_2.6.0.bb b/meta/recipes-kernel/lttng/lttng-tools_2.6.0.bb
index 6397a987a6..9ecc2ab8ae 100644
--- a/meta/recipes-kernel/lttng/lttng-tools_2.6.0.bb
+++ b/meta/recipes-kernel/lttng/lttng-tools_2.6.0.bb
@@ -28,6 +28,7 @@ SRC_URI = "git://git.lttng.org/lttng-tools.git;branch=stable-2.6 \
            file://extern-decls.patch \
            file://run-ptest \
            file://lttng-tools-Fix-live-timer-calculation-error.patch \
+           file://0001-Fix-sessiond-disable-match-app-event-by-name.patch \
           "
 
 S = "${WORKDIR}/git"