diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-08-06 09:19:42 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-08-06 09:19:42 -0700 |
| commit | 033a94412b6065a21c2ede2f37867e747a84563f (patch) | |
| tree | d0784257fc8c80db8b5be7b800816d8cfb30599c /lib | |
| parent | a9cf69d0e7f2051cca1c08ed9b34fe79da951ee9 (diff) | |
| parent | 55eb9a6c8bf3e2099863118ef53e02d9f44f85a8 (diff) | |
| download | lwn-033a94412b6065a21c2ede2f37867e747a84563f.tar.gz lwn-033a94412b6065a21c2ede2f37867e747a84563f.zip | |
Merge tag 'livepatching-for-5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching
Pull livepatching update from Petr Mladek:
- Make a selftest more reliable
* tag 'livepatching-for-5.20' of git://git.kernel.org/pub/scm/linux/kernel/git/livepatching/livepatching:
selftests/livepatch: better synchronize test_klp_callbacks_busy
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/livepatch/test_klp_callbacks_busy.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/lib/livepatch/test_klp_callbacks_busy.c b/lib/livepatch/test_klp_callbacks_busy.c index 7ac845f65be5..133929e0ce8f 100644 --- a/lib/livepatch/test_klp_callbacks_busy.c +++ b/lib/livepatch/test_klp_callbacks_busy.c @@ -16,10 +16,12 @@ MODULE_PARM_DESC(block_transition, "block_transition (default=false)"); static void busymod_work_func(struct work_struct *work); static DECLARE_WORK(work, busymod_work_func); +static DECLARE_COMPLETION(busymod_work_started); static void busymod_work_func(struct work_struct *work) { pr_info("%s enter\n", __func__); + complete(&busymod_work_started); while (READ_ONCE(block_transition)) { /* @@ -37,6 +39,12 @@ static int test_klp_callbacks_busy_init(void) pr_info("%s\n", __func__); schedule_work(&work); + /* + * To synchronize kernel messages, hold the init function from + * exiting until the work function's entry message has printed. + */ + wait_for_completion(&busymod_work_started); + if (!block_transition) { /* * Serialize output: print all messages from the work |