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From: Harman Kalra <hkalra@marvell.com>
To: <stephen@networkplumber.org>, <jgrajcia@cisco.com>,
<david.marchand@redhat.com>
CC: <dev@dpdk.org>, Harman Kalra <hkalra@marvell.com>, <stable@dpdk.org>
Date: Mon, 11 May 2020 19:13:05 +0530
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definitions=2020-05-11_06:2020-05-11,
2020-05-11 signatures=0
Subject: [dpdk-dev] [PATCH] eal: fix epoll fd list rebuild
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An issue has been observed where epoll file descriptor
list rebuilds every time an interrupt/alarm event is
received.
eal_intr_process_interrupts() should notify pipe fd only
if any source is removed from the source list i.e (rv > 0)
Fixes: 0c7ce182a760 ("eal: add pending interrupt callback unregister"
Cc: stable@dpdk.org
Signed-off-by: Harman Kalra <hkalra@marvell.com>
---
lib/librte_eal/linux/eal_interrupts.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/lib/librte_eal/linux/eal_interrupts.c b/lib/librte_eal/linux/eal_interrupts.c
index 16e7a7d51..84eeaa1bc 100644
--- a/lib/librte_eal/linux/eal_interrupts.c
+++ b/lib/librte_eal/linux/eal_interrupts.c
@@ -1010,7 +1010,7 @@ eal_intr_process_interrupts(struct epoll_event *events, int nfds)
}
/* notify the pipe fd waited by epoll_wait to rebuild the wait list */
- if (rv >= 0 && write(intr_pipe.writefd, "1", 1) < 0) {
+ if (rv > 0 && write(intr_pipe.writefd, "1", 1) < 0) {
rte_spinlock_unlock(&intr_lock);
return -EPIPE;
}
--
2.18.0