Revert "Remove trace_buf_size and trace_event from the kernel bootparameters of the kdump kernel"
upstream: fedora
conflict: none
resolves: bz2042726
commit 99de77bba7ff7668edab3da723aad7c1c8395b5f
Author: Tao Liu <ltao@redhat.com>
Date: Fri Jan 21 16:08:47 2022 +0800
Revert "Remove trace_buf_size and trace_event from the kernel bootparameters of the kdump kernel"
There is a mechanism to keep memory consumption minimum, i.e. equal
to trace_buf_size=1, until tracing by ftrace is actually started:
tracing: keep ring buffer to minimum size till used
https://github.com/torvalds/linux/commit/73c5162aa362a543793f4a957c6c536dcbaa89ce
Since ftrace is usually never used in the kdump 2nd kernel, the kdump
2nd kernel behaves in the same way with or without trace_buf_size=1.
So the issue which the patch want to solve never exists. Let's revert
the patch for better maintainance and avoid confusion.
ref link: https://bugzilla.redhat.com/show_bug.cgi?id=2034501#c20
This reverts commit f39000f.
Signed-off-by: Tao Liu <ltao@redhat.com>
Acked-by: Coiby Xu <coxu@redhat.com>
Signed-off-by: Tao Liu <ltao@redhat.com>