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authorJohn Hubbard <jhubbard@nvidia.com>2020-12-15 06:05:17 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-12-15 23:13:38 +0300
commita9bed1e1c2a9bb36cdd29af0ef48044d1b9e8c2a (patch)
tree8bba8252582ca66cb681e83fc7ae786983cac024 /Documentation/core-api
parentf545605cc08e1f1820b4c8748689e7c6d4365d99 (diff)
downloadlinux-a9bed1e1c2a9bb36cdd29af0ef48044d1b9e8c2a.tar.xz
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.rst2
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 eae972b23224..fcf605be43d0 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: ::