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From a55bdb007ca24900a704f72359305b04125d9e05 Mon Sep 17 00:00:00 2001
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From: Michal Sekletar <msekleta@redhat.com>
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Date: Wed, 20 Apr 2022 10:13:43 +0200
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Subject: [PATCH] logind: remember our idle state and use it to detect idle
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level transitions
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Fixes #16391
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(cherry picked from commit 4e2cfb778b9ed7f22ee98f48f28cf8678d25ad32)
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Resolved: #1866955
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---
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src/login/logind.c | 23 +++++++++++++++++++----
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src/login/logind.h | 1 +
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2 files changed, 20 insertions(+), 4 deletions(-)
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diff --git a/src/login/logind.c b/src/login/logind.c
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index 6b576dad0d..bb1d3f3523 100644
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--- a/src/login/logind.c
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+++ b/src/login/logind.c
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@@ -1027,18 +1027,33 @@ static int manager_dispatch_idle_action(sd_event_source *s, uint64_t t, void *us
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n = now(CLOCK_MONOTONIC);
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r = manager_get_idle_hint(m, &since);
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- if (r <= 0)
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+ if (r <= 0) {
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/* Not idle. Let's check if after a timeout it might be idle then. */
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elapse = n + m->idle_action_usec;
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- else {
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+ m->was_idle = false;
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+ } else {
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+
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/* Idle! Let's see if it's time to do something, or if
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* we shall sleep for longer. */
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if (n >= since.monotonic + m->idle_action_usec &&
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(m->idle_action_not_before_usec <= 0 || n >= m->idle_action_not_before_usec + m->idle_action_usec)) {
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- log_info("System idle. Taking action.");
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+ bool is_edge = false;
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+
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+ /* We weren't idle previously or some activity happened while we were sleeping, and now we are
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+ * idle. Let's remember that for the next time and make this an edge transition. */
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+ if (!m->was_idle || since.monotonic >= m->idle_action_not_before_usec) {
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+ is_edge = true;
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+ m->was_idle = true;
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+ }
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+
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+ if (m->idle_action == HANDLE_LOCK && !is_edge)
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+ /* We are idle and we were before so we are actually not taking any action. */
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+ log_debug("System idle.");
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+ else
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+ log_info("System idle. Doing %s operation.", handle_action_to_string(m->idle_action));
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- manager_handle_action(m, 0, m->idle_action, false, false);
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+ manager_handle_action(m, 0, m->idle_action, false, is_edge);
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m->idle_action_not_before_usec = n;
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}
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diff --git a/src/login/logind.h b/src/login/logind.h
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index 606adf4fe6..b9b4a5113f 100644
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--- a/src/login/logind.h
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+++ b/src/login/logind.h
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@@ -101,6 +101,7 @@ struct Manager {
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usec_t idle_action_usec;
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usec_t idle_action_not_before_usec;
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HandleAction idle_action;
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+ bool was_idle;
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usec_t stop_idle_session_usec;
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