xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

torture: Dump ftrace at shutdown only if requested

Browse Source 
If there is a large number of torture tests running concurrently,
all of which are dumping large ftrace buffers at shutdown time, the
resulting dumping can take a very long time, particularly on systems
with rotating-rust storage.  This commit therefore adds a default-off
torture.ftrace_dump_at_shutdown module parameter that enables
shutdown-time ftrace-buffer dumping.

Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Paul E. McKenney
2020-06-16 15:38:24 -07:00
parent 06efa9b4b2
commit 2102ad290a
2 changed files with 12 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
Documentation/admin-guide/kernel-parameters.txt
View File

@@ -5096,6 +5096,13 @@
Prevent the CPU-hotplug component of torturing
until after init has spawned.
torture.ftrace_dump_at_shutdown= [KNL]
Dump the ftrace buffer at torture-test shutdown,
even if there were no errors. This can be a
very costly operation when many torture tests
are running concurrently, especially on systems
with rotating-rust storage.
tp720= [HW,PS2]
tpm_suspend_pcr=[HW,TPM]