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Peter Ujfalusi fd17d1abce dmaengine: dmatest: stop completed threads when running without set channel 
The completed threads were not cleared and consequent run would result
threads accumulating:

echo 800000 > /sys/module/dmatest/parameters/test_buf_size
echo 2000 > /sys/module/dmatest/parameters/timeout
echo 50 > /sys/module/dmatest/parameters/iterations
echo 1 > /sys/module/dmatest/parameters/max_channels
echo "" > /sys/module/dmatest/parameters/channel
[  237.507265] dmatest: Added 1 threads using dma1chan2
echo 1 > /sys/module/dmatest/parameters/run
[  244.713360] dmatest: Started 1 threads using dma1chan2
[  246.117680] dmatest: dma1chan2-copy0: summary 50 tests, 0 failures 2437.47 iops 977623 KB/s (0)

echo 1 > /sys/module/dmatest/parameters/run
[  292.381471] dmatest: No channels configured, continue with any
[  292.389307] dmatest: Added 1 threads using dma1chan3
[  292.394302] dmatest: Started 1 threads using dma1chan2
[  292.399454] dmatest: Started 1 threads using dma1chan3
[  293.800835] dmatest: dma1chan3-copy0: summary 50 tests, 0 failures 2624.53 iops 975014 KB/s (0)

echo 1 > /sys/module/dmatest/parameters/run
[  307.301429] dmatest: No channels configured, continue with any
[  307.309212] dmatest: Added 1 threads using dma1chan4
[  307.314197] dmatest: Started 1 threads using dma1chan2
[  307.319343] dmatest: Started 1 threads using dma1chan3
[  307.324492] dmatest: Started 1 threads using dma1chan4
[  308.730773] dmatest: dma1chan4-copy0: summary 50 tests, 0 failures 2390.28 iops 965436 KB/s (0)

Fixes: 6b41030fdc ("dmaengine: dmatest: Restore default for channel")
Reported-by: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Link: https://lore.kernel.org/r/20200701101225.8607-1-peter.ujfalusi@ti.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-07-06 10:42:17 +05:30
arch Kbuild updates for v5.8 (2nd) 2020-06-13 13:29:16 -07:00
block Kbuild updates for v5.8 (2nd) 2020-06-13 13:29:16 -07:00
certs .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
crypto Merge branch 'rwonce/rework' of git://git.kernel.org/pub/scm/linux/kernel/git/will/linux 2020-06-10 14:46:54 -07:00
Documentation Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-06-13 16:27:13 -07:00
drivers dmaengine: dmatest: stop completed threads when running without set channel 2020-07-06 10:42:17 +05:30
fs for-5.8-part2-tag 2020-06-14 09:47:25 -07:00
include dmaengine: idxd: fix hw descriptor fields for delta record 2020-06-24 11:53:34 +05:30
init Kbuild updates for v5.8 (2nd) 2020-06-13 13:29:16 -07:00
ipc mmap locking API: use coccinelle to convert mmap_sem rwsem call sites 2020-06-09 09:39:14 -07:00
kernel Add additional LSM hooks for SafeSetID 2020-06-14 11:39:31 -07:00
lib Kbuild updates for v5.8 (2nd) 2020-06-13 13:29:16 -07:00
LICENSES LICENSES: Rename other to deprecated 2019-05-03 06:34:32 -06:00
mm Kbuild updates for v5.8 (2nd) 2020-06-13 13:29:16 -07:00
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-06-13 16:27:13 -07:00
samples binderfs: add gitignore for generated sample program 2020-06-13 13:41:24 -07:00
scripts Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-06-13 16:27:13 -07:00
security Add additional LSM hooks for SafeSetID 2020-06-14 11:39:31 -07:00
sound Kbuild updates for v5.8 (2nd) 2020-06-13 13:29:16 -07:00
tools Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-06-13 16:27:13 -07:00
usr bpfilter: match bit size of bpfilter_umh to that of the kernel 2020-05-17 18:52:01 +09:00
virt MIPS: 2020-06-12 11:05:52 -07:00
.clang-format block: add bio_for_each_bvec_all() 2020-05-25 11:25:24 +02:00
.cocciconfig
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore modpost: generate vmlinux.symvers and reuse it for the second modpost 2020-06-06 23:38:12 +09:00
.mailmap A fair amount of stuff this time around, dominated by yet another massive 2020-06-01 15:45:27 -07:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS mailmap: change email for Ricardo Ribalda 2020-05-25 18:59:59 -06:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS MAINTAINERS: switch dmaengine tree to kernel.org 2020-06-24 11:11:39 +05:30
Makefile Linux 5.8-rc1 2020-06-14 12:45:04 -07:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.