From 078307f19fe9d5f5966f4e14700864d18895a151 Mon Sep 17 00:00:00 2001
From: Tao Liu <ltao@redhat.com>
Date: Nov 10 2021 02:20:27 +0000
Subject: Remove trace_buf_size and trace_event from the kernel bootparameters of the kdump kernel


upstream: fedora
resolves: bz2003832
conflict: none

commit f39000f5240e577347d2cdae8fd9bcb710fe7325
Author: fj1508ic@fujitsu.com <fj1508ic@fujitsu.com>
Date:   Tue Jan 26 06:37:28 2021 +0000

    Remove trace_buf_size and trace_event from the kernel bootparameters of the kdump kernel

    The kdump kernel uses resources for ftrace because trace_buf_size, which
    specifies the ring buffer size for ftrace, and trace_event, which specifies
    a valid trace event, are not removed, but the kdump kernel does not require
    ftrace.

    trace_buf_size is ignored if the specified size is 0, so specify 1.

    Signed-off-by: Hisashi Nagaoka <fj1508ic@fujitsu.com>
    Acked-by: Kairui Song <kasong@redhat.com>

Signed-off-by: Tao Liu <ltao@redhat.com>

---

diff --git a/kdump-lib.sh b/kdump-lib.sh
index 3c42325..05a047a 100755
--- a/kdump-lib.sh
+++ b/kdump-lib.sh
@@ -757,6 +757,10 @@ prepare_cmdline()
         fi
     done
 
+    # Remove trace_buf_size, trace_event
+    cmdline=$(remove_cmdline_param "$cmdline" trace_buf_size trace_event)
+    cmdline="${cmdline} trace_buf_size=1"
+
     echo ${cmdline}
 }