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| author | Matthew Wilcox <willy@infradead.org> | 2016-12-14 15:08:02 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2016-12-14 16:04:09 -0800 |
| commit | 847d357635ce4c63b8901ab81333586a0f115fa5 (patch) | |
| tree | 512d5cb1f6aa8f44a07dbfe8e501297e5b8aebb7 /tools/testing/radix-tree/main.c | |
| parent | 31023cd66468359790beb046b6808fe0444672a2 (diff) | |
| download | linux-847d357635ce4c63b8901ab81333586a0f115fa5.tar.gz linux-847d357635ce4c63b8901ab81333586a0f115fa5.tar.bz2 linux-847d357635ce4c63b8901ab81333586a0f115fa5.zip | |
radix tree test suite: track preempt_count
Rather than simply NOP out preempt_enable() and preempt_disable(), keep
track of preempt_count and display it regularly in case either the test
suite or the code under test is forgetting to balance the enables &
disables. Only found a test-case that was forgetting to re-enable
preemption, but it's a possibility worth checking.
Link: http://lkml.kernel.org/r/1480369871-5271-39-git-send-email-mawilcox@linuxonhyperv.com
Signed-off-by: Matthew Wilcox <willy@infradead.org>
Tested-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Konstantin Khlebnikov <koct9i@gmail.com>
Cc: Ross Zwisler <ross.zwisler@linux.intel.com>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'tools/testing/radix-tree/main.c')
| -rw-r--r-- | tools/testing/radix-tree/main.c | 30 |
1 files changed, 20 insertions, 10 deletions
diff --git a/tools/testing/radix-tree/main.c b/tools/testing/radix-tree/main.c index daa9010693e8..64ffe67605d4 100644 --- a/tools/testing/radix-tree/main.c +++ b/tools/testing/radix-tree/main.c @@ -293,27 +293,36 @@ static void single_thread_tests(bool long_run) { int i; - printf("starting single_thread_tests: %d allocated\n", nr_allocated); + printf("starting single_thread_tests: %d allocated, preempt %d\n", + nr_allocated, preempt_count); multiorder_checks(); - printf("after multiorder_check: %d allocated\n", nr_allocated); + printf("after multiorder_check: %d allocated, preempt %d\n", + nr_allocated, preempt_count); locate_check(); - printf("after locate_check: %d allocated\n", nr_allocated); + printf("after locate_check: %d allocated, preempt %d\n", + nr_allocated, preempt_count); tag_check(); - printf("after tag_check: %d allocated\n", nr_allocated); + printf("after tag_check: %d allocated, preempt %d\n", + nr_allocated, preempt_count); gang_check(); - printf("after gang_check: %d allocated\n", nr_allocated); + printf("after gang_check: %d allocated, preempt %d\n", + nr_allocated, preempt_count); add_and_check(); - printf("after add_and_check: %d allocated\n", nr_allocated); + printf("after add_and_check: %d allocated, preempt %d\n", + nr_allocated, preempt_count); dynamic_height_check(); - printf("after dynamic_height_check: %d allocated\n", nr_allocated); + printf("after dynamic_height_check: %d allocated, preempt %d\n", + nr_allocated, preempt_count); big_gang_check(long_run); - printf("after big_gang_check: %d allocated\n", nr_allocated); + printf("after big_gang_check: %d allocated, preempt %d\n", + nr_allocated, preempt_count); for (i = 0; i < (long_run ? 2000 : 3); i++) { copy_tag_check(); printf("%d ", i); fflush(stdout); } - printf("after copy_tag_check: %d allocated\n", nr_allocated); + printf("after copy_tag_check: %d allocated, preempt %d\n", + nr_allocated, preempt_count); } int main(int argc, char **argv) @@ -336,7 +345,8 @@ int main(int argc, char **argv) single_thread_tests(long_run); sleep(1); - printf("after sleep(1): %d allocated\n", nr_allocated); + printf("after sleep(1): %d allocated, preempt %d\n", + nr_allocated, preempt_count); rcu_unregister_thread(); exit(0); |