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| author | John Hubbard <jhubbard@nvidia.com> | 2020-12-14 19:05:17 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-15 12:13:38 -0800 |
| commit | a9bed1e1c2a9bb36cdd29af0ef48044d1b9e8c2a (patch) | |
| tree | 8bba8252582ca66cb681e83fc7ae786983cac024 /Documentation/core-api | |
| parent | f545605cc08e1f1820b4c8748689e7c6d4365d99 (diff) | |
| download | linux-a9bed1e1c2a9bb36cdd29af0ef48044d1b9e8c2a.tar.gz | |
selftests/vm: only some gup_test items are really benchmarks
Therefore, some minor cleanup and improvements are in order:
1. Rename the other items appropriately.
2. Stop reporting timing information on the non-benchmark items. It's
still being recorded and is available, but there's no point in
cluttering up the report with data that no one reasonably needs to
check.
3. Don't do iterations, for non-benchmark items.
4. Print out a shorter, more appropriate report for the non-benchmark
tests.
5. Add the command that was run, to the report. This really helps, as
there are quite a lot of options now.
6. Use a larger integer type for cmd, now that it's being compared
Otherwise it doesn't work, because in this case cmd is about 3 billion,
which is the perfect size for problems with signed vs unsigned int.
Link: https://lkml.kernel.org/r/20201026064021.3545418-6-jhubbard@nvidia.com
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
Cc: Jérôme Glisse <jglisse@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Ralph Campbell <rcampbell@nvidia.com>
Cc: Shuah Khan <shuah@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'Documentation/core-api')
| -rw-r--r-- | Documentation/core-api/pin_user_pages.rst | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/Documentation/core-api/pin_user_pages.rst b/Documentation/core-api/pin_user_pages.rst index eae972b232243a..fcf605be43d0c0 100644 --- a/Documentation/core-api/pin_user_pages.rst +++ b/Documentation/core-api/pin_user_pages.rst @@ -226,7 +226,7 @@ This file:: has the following new calls to exercise the new pin*() wrapper functions: * PIN_FAST_BENCHMARK (./gup_test -a) -* PIN_BENCHMARK (./gup_test -b) +* PIN_BASIC_TEST (./gup_test -b) You can monitor how many total dma-pinned pages have been acquired and released since the system was booted, via two new /proc/vmstat entries: :: |