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From: Michael Jeanson <mjeanson@efficios.com>
To: lttng-dev@lists.lttng.org
Subject: [PATCH lttng-ust 1/2] Fix: reset cached vpid context on fork
Date: Fri,  2 Mar 2018 17:36:25 -0500	[thread overview]
Message-ID: <1520030186-5612-1-git-send-email-mjeanson__19218.2248262272$1520030090$gmane$org@efficios.com> (raw)

We currently reset the cached vtid on fork but not the vpid. This is not
a problem on Linux because we don't cache the vpid internally but call
getpid() directly and rely on the glibc pid cache.

Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
---
 liblttng-ust/lttng-ust-comm.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/liblttng-ust/lttng-ust-comm.c b/liblttng-ust/lttng-ust-comm.c
index 4391446..d4add1c 100644
--- a/liblttng-ust/lttng-ust-comm.c
+++ b/liblttng-ust/lttng-ust-comm.c
@@ -2011,6 +2011,7 @@ void ust_after_fork_child(sigset_t *restore_sigset)
 {
 	if (URCU_TLS(lttng_ust_nest_count))
 		return;
+	lttng_context_vpid_reset();
 	lttng_context_vtid_reset();
 	DBG("process %d", getpid());
 	/* Release urcu mutexes */
-- 
2.7.4

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             reply	other threads:[~2018-03-02 22:36 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-02 22:36 Michael Jeanson [this message]
     [not found] <1520030186-5612-1-git-send-email-mjeanson@efficios.com>
2018-03-05 15:43 ` [PATCH lttng-ust 1/2] Fix: reset cached vpid context on fork Mathieu Desnoyers

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