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From f5ce5e24f9cf18a37ef6aedb149891d07767b045 Mon Sep 17 00:00:00 2001
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From: Hannes Reinecke <hare@suse.de>
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Date: Wed, 4 Mar 2015 16:32:16 +0100
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Subject: [PATCH] Remove the cap on epoll events
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Currently the code will silently blank out events if there are more
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then 512 epoll events, causing them never to be handled at all. This
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patch removes the cap on the number of events for epoll_wait, thereby
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avoiding this issue.
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(cherry picked from commit 1c724e9e0ec5bc4bf791a3d7b1cf5b955cdb98b2)
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---
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src/libsystemd/sd-event/sd-event.c | 3 +--
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1 file changed, 1 insertion(+), 2 deletions(-)
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diff --git a/src/libsystemd/sd-event/sd-event.c b/src/libsystemd/sd-event/sd-event.c
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index 25089a033..c6350be9f 100644
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--- a/src/libsystemd/sd-event/sd-event.c
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+++ b/src/libsystemd/sd-event/sd-event.c
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@@ -37,7 +37,6 @@
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#include "sd-event.h"
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-#define EPOLL_QUEUE_MAX 512U
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#define DEFAULT_ACCURACY_USEC (250 * USEC_PER_MSEC)
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typedef enum EventSourceType {
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@@ -2367,7 +2366,7 @@ _public_ int sd_event_wait(sd_event *e, uint64_t timeout) {
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return 1;
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}
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- ev_queue_max = CLAMP(e->n_sources, 1U, EPOLL_QUEUE_MAX);
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+ ev_queue_max = MAX(e->n_sources, 1u);
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ev_queue = newa(struct epoll_event, ev_queue_max);
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m = epoll_wait(e->epoll_fd, ev_queue, ev_queue_max,
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