patches for DPDK stable branches
 help / color / Atom feed
* [dpdk-stable] [PATCH] eal: fix epoll fd list rebuild
@ 2020-05-11 13:43 Harman Kalra
  2020-05-24 15:30 ` [dpdk-stable] [dpdk-dev] " Thomas Monjalon
  0 siblings, 1 reply; 9+ messages in thread
From: Harman Kalra @ 2020-05-11 13:43 UTC (permalink / raw)
  To: stephen, jgrajcia, david.marchand; +Cc: dev, Harman Kalra, stable

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


^ permalink raw reply	[flat|nested] 9+ messages in thread

end of thread, back to index

Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2020-05-11 13:43 [dpdk-stable] [PATCH] eal: fix epoll fd list rebuild Harman Kalra
2020-05-24 15:30 ` [dpdk-stable] [dpdk-dev] " Thomas Monjalon
2020-05-25  9:49   ` [dpdk-stable] [EXT] " Harman Kalra
2020-05-27 12:32     ` [dpdk-stable] [dpdk-dev] [EXT] " Harman Kalra
2020-05-27 12:44       ` Harman Kalra
2020-05-27 13:04         ` Thomas Monjalon
2020-05-27 17:19           ` Harman Kalra
2020-06-19 13:59   ` [dpdk-stable] [PATCH v2] " Harman Kalra
2020-06-24  8:01     ` [dpdk-stable] [dpdk-dev] " Thomas Monjalon

patches for DPDK stable branches

Archives are clonable:
	git clone --mirror http://inbox.dpdk.org/stable/0 stable/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 stable stable/ http://inbox.dpdk.org/stable \
		stable@dpdk.org
	public-inbox-index stable


Newsgroup available over NNTP:
	nntp://inbox.dpdk.org/inbox.dpdk.stable


AGPL code for this site: git clone https://public-inbox.org/ public-inbox