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linux_kselftest-next-7.2-rc1-second

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Fixes ftrace test and kselftest document
 
 -- docs: remove obsolete wiki link from kselftest.rst
 -- ftrace: drop invalid top-level local in test_ownership
 -- ftrace: Fix trace_marker_raw test on 64K page kernels
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Merge tag 'linux_kselftest-next-7.2-rc1-second' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest

Pull more kselftest updates from Shuah Khan:
 "Docs:
    -remove obsolete wiki link from kselftest.rst

  ftrace:
    - drop invalid top-level local in test_ownership
    - Fix trace_marker_raw test on 64K page kernels"

* tag 'linux_kselftest-next-7.2-rc1-second' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  docs: kselftest: remove link to obsolete wiki
  selftests/ftrace: Fix trace_marker_raw test on 64K page kernels
  selftests/ftrace: Drop invalid top-level local in test_ownership
This commit is contained in:
Linus Torvalds 2026-06-23 07:35:37 -07:00
commit 3eb20a97b3
3 changed files with 12 additions and 9 deletions
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5
Documentation/dev-tools/kselftest.rst
View File

@ -15,11 +15,6 @@ able to run that test on an older kernel. Hence, it is important to keep
code that can still test an older kernel and make sure it skips the test
gracefully on newer releases.
You can find additional information on Kselftest framework, how to
write new tests using the framework on Kselftest wiki:
https://kselftest.wiki.kernel.org/
On some systems, hot-plug tests could hang forever waiting for cpu and
memory to be ready to be offlined. A special hot-plug target is created
to run the full range of hot-plug tests. In default mode, hot-plug tests run

2
tools/testing/selftests/ftrace/test.d/00basic/test_ownership.tc
View File

@ -6,7 +6,7 @@
original_group=`stat -c "%g" .`
original_owner=`stat -c "%u" .`
local mount_point=$(get_mount_point)
mount_point=$(get_mount_point)
mount_options=$(get_mnt_options "$mount_point")

14
tools/testing/selftests/ftrace/test.d/00basic/trace_marker_raw.tc
View File

@ -36,15 +36,23 @@ make_str() {
data=`printf -- 'X%.0s' $(seq $cnt)`
printf "${val}${data}"
# Return escape-sequence text (e.g. "\003\000..."); the caller
# converts to binary. Shell command substitution strips NUL bytes,
# so the binary form cannot survive being captured into a variable.
printf '%s' "${val}${data}"
}
write_buffer() {
id=$1
size=$2
# write the string into the raw marker
make_str $id $size > trace_marker_raw
str=`make_str $id $size`
len=`printf "$str" | wc -c`
# Pipe through dd to ensure a single atomic write() syscall
# on architectures with 64K pages, where shell's printf builtin
# uses stdio buffering which may split the output into multiple
# writes.
printf "$str" | dd of=trace_marker_raw bs=$len iflag=fullblock
}