linux-stable.git/lib/test_rhashtable.c, branch v4.2.6

rhashtable-test: Fix 64bit division

2015-05-05T23:30:47+00:00

A 64bit division went in unnoticed. Use do_div() to accomodate
non 64bit architectures.

Reported-by: kbuild test robot
Fixes: 1aa661f5c3df ("rhashtable-test: Measure time to insert, remove & traverse entries")
Signed-off-by: Thomas Graf 
Signed-off-by: David S. Miller

rhashtable-test: Detect insertion failures

2015-05-04T03:08:54+00:00

Account for failed inserts due to memory pressure or EBUSY and
ignore failed entries during the consistency check.

Signed-off-by: Thomas Graf 
Signed-off-by: David S. Miller

rhashtable-test: Use walker to test bucket statistics

2015-05-04T03:08:54+00:00

As resizes may continue to run in the background, use walker to
ensure we see all entries. Also print the encountered number
of rehashes queued up while traversing.

This may lead to warnings due to entries being seen multiple
times. We consider them non-fatal.

Signed-off-by: Thomas Graf 
Signed-off-by: David S. Miller

rhashtable-test: Do not allocate individual test objects

2015-05-04T03:08:54+00:00

By far the most expensive part of the selftest was the allocation
of entries. Using a static array allows to measure the rhashtable
operations.

Signed-off-by: Thomas Graf 
Signed-off-by: David S. Miller

rhashtable-test: Get rid of ptr in test_obj structure

2015-05-04T03:08:54+00:00

This only blows up the size of the test structure for no gain
in test coverage. Reduces size of test_obj from 24 to 16 bytes.

Signed-off-by: Thomas Graf 
Signed-off-by: David S. Miller

rhashtable-test: Measure time to insert, remove & traverse entries

2015-05-04T03:08:53+00:00

Make test configurable by allowing to specify all relevant knobs
through module parameters.

Do several test runs and measure the average time it takes to
insert & remove all entries. Note, a deferred resize might still
continue to run in the background.

Signed-off-by: Thomas Graf 
Signed-off-by: David S. Miller

rhashtable-test: Remove unused TEST_NEXPANDS

2015-05-04T03:08:53+00:00

Signed-off-by: Thomas Graf 
Signed-off-by: David S. Miller

test_rhashtable: Remove bogus max_size setting

2015-04-03T19:09:36+00:00

Now that resizing is completely automatic, we need to remove
the max_size setting or the test will fail.

Reported-by: Fengguang Wu 
Signed-off-by: Herbert Xu 
Acked-by: Thomas Graf 
Signed-off-by: David S. Miller

rhashtable: Add multiple rehash support

2015-03-24T02:07:52+00:00

This patch adds the missing bits to allow multiple rehashes.  The
read-side as well as remove already handle this correctly.  So it's
only the rehasher and insertion that need modification to handle
this.

Note that this patch doesn't actually enable it so for now rehashing
is still only performed by the worker thread.

This patch also disables the explicit expand/shrink interface because
the table is meant to expand and shrink automatically, and continuing
to export these interfaces unnecessarily complicates the life of the
rehasher since the rehash process is now composed of two parts.

Signed-off-by: Herbert Xu 
Acked-by: Thomas Graf 
Signed-off-by: David S. Miller

test_rhashtable: Use inlined rhashtable interface

2015-03-20T20:16:24+00:00

This patch converts test_rhashtable to the inlined rhashtable
interface.

Signed-off-by: Herbert Xu 
Signed-off-by: David S. Miller