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From d16dc6fff0260ec26002046fae4aeb546d6b9a0e Mon Sep 17 00:00:00 2001
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From: Lianbo Jiang <lijiang@redhat.com>
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Date: Mon, 17 Jan 2022 15:14:00 +0800
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Subject: [PATCH 05/10] Move the initialization of "boot_date" to task_init()
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The "boot_date" is initialized conditionally in the cmd_log(), which may
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display incorrect "boot_date" value with the following command before
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running the "log -T" command:
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crash> help -k | grep date
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date: Wed Dec 22 13:39:29 IST 2021
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boot_date: Thu Jan 1 05:30:00 IST 1970
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^^^^^^^^^^^^^^^^^^^^^^^^^^^^
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The calculation of "boot_date" depends on the HZ value, and the HZ will
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be calculated in task_init() at the latest, so let's move it here.
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Signed-off-by: Lianbo Jiang <lijiang@redhat.com>
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---
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kernel.c | 18 +++---------------
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task.c | 10 ++++++++++
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2 files changed, 13 insertions(+), 15 deletions(-)
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diff --git a/kernel.c b/kernel.c
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index 36c57ed501ad..094fe9b2efad 100644
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--- a/kernel.c
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+++ b/kernel.c
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@@ -5025,21 +5025,9 @@ cmd_log(void)
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if (argerrs)
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cmd_usage(pc->curcmd, SYNOPSIS);
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- if (msg_flags & SHOW_LOG_CTIME) {
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- if (pc->flags & MINIMAL_MODE) {
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- error(WARNING, "the option '-T' is not available in minimal mode\n");
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- return;
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- }
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-
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- if (kt->boot_date.tv_sec == 0) {
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- ulonglong uptime_jiffies;
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- ulong uptime_sec;
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-
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- get_uptime(NULL, &uptime_jiffies);
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- uptime_sec = (uptime_jiffies)/(ulonglong)machdep->hz;
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- kt->boot_date.tv_sec = kt->date.tv_sec - uptime_sec;
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- kt->boot_date.tv_nsec = 0;
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- }
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+ if (msg_flags & SHOW_LOG_CTIME && pc->flags & MINIMAL_MODE) {
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+ error(WARNING, "the option '-T' is not available in minimal mode\n");
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+ return;
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}
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if (msg_flags & SHOW_LOG_AUDIT) {
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diff --git a/task.c b/task.c
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index 76e184ae70b1..263a8344dd94 100644
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--- a/task.c
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+++ b/task.c
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@@ -692,6 +692,16 @@ task_init(void)
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stack_overflow_check_init();
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+ if (machdep->hz) {
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+ ulonglong uptime_jiffies;
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+ ulong uptime_sec;
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+
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+ get_uptime(NULL, &uptime_jiffies);
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+ uptime_sec = (uptime_jiffies)/(ulonglong)machdep->hz;
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+ kt->boot_date.tv_sec = kt->date.tv_sec - uptime_sec;
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+ kt->boot_date.tv_nsec = 0;
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+ }
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+
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tt->flags |= TASK_INIT_DONE;
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}
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--
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2.20.1
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