diff mbox series

[v2] eal: fix epoll fd list rebuild

Message ID 1592575168-16881-1-git-send-email-hkalra@marvell.com (mailing list archive)
State Accepted, archived
Delegated to: Thomas Monjalon
Headers show
Series [v2] eal: fix epoll fd list rebuild | expand

Checks

Context Check Description
ci/iol-testing success Testing PASS
ci/travis-robot success Travis build: passed
ci/Intel-compilation success Compilation OK
ci/iol-mellanox-Performance success Performance Testing PASS
ci/iol-nxp-Performance success Performance Testing PASS
ci/iol-intel-Performance success Performance Testing PASS
ci/iol-broadcom-Performance success Performance Testing PASS
ci/checkpatch success coding style OK

Commit Message

Harman Kalra June 19, 2020, 1:59 p.m. UTC
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>
---
*V2: missing closing bracket in Fixes tag in V1

 lib/librte_eal/linux/eal_interrupts.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

Comments

Thomas Monjalon June 24, 2020, 8:01 a.m. UTC | #1
19/06/2020 15:59, Harman Kalra:
> 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>

Applied, thanks
diff mbox series

Patch

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;
 		}