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Date:   Thu, 23 Jun 2022 09:40:30 -0500
From:   Mike Rapoport <rppt@kernel.org>
To:     Rebecca Mckeever <remckee0@gmail.com>
Cc:     linux-mm@kvack.org, linux-kernel@vger.kernel.org,
        David Hildenbrand <david@redhat.com>
Subject: Re: [PATCH v3 2/4] memblock tests: add verbose output to memblock
 tests
Message-ID: <YrR7XuV3Yoi4e2mf@kernel.org>
References: <cover.1655889641.git.remckee0@gmail.com>
 <004e021cc3cb7be8749361b3b1cb324459b9cb9f.1655889641.git.remckee0@gmail.com>
 <YrPsUrJ5R5UaIGBS@kernel.org>
 <YrQIkswtqUAz9cUt@bertie>
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On Thu, Jun 23, 2022 at 01:30:42AM -0500, Rebecca Mckeever wrote:
> On Wed, Jun 22, 2022 at 11:30:10PM -0500, Mike Rapoport wrote:
> > On Wed, Jun 22, 2022 at 04:29:07AM -0500, Rebecca Mckeever wrote:
> > > Add and use functions for printing verbose testing output.
> > > 
> > > If the Memblock simulator was compiled with VERBOSE=1:
> > >   prefix_push() appends the given string to a prefix string that will be
> > >     printed in the test functions.
> > >   prefix_pop() removes the last prefix from the prefix string.
> > >   prefix_reset() clears the prefix string.
> > >   test_fail() prints a message after a test fails containing the test
> > >     number of the failing test and the prefix.
> > >   test_pass() prints a message after a test passes containing its test
> > >     number and the prefix.
> > >   test_print() prints the given formatted output string.
> > > 
> > > If the Memblock simulator was not compiled with VERBOSE=1, these
> > > functions do nothing.
> > > 
> > > Add the assert wrapper macros ASSERT_EQ(), ASSERT_NE(), and ASSERT_LT().
> > > If the assert condition fails, these macros call test_fail() before
> > > executing assert().
> > > 
> > > Signed-off-by: Rebecca Mckeever <remckee0@gmail.com>
> > > ---
> > >  tools/testing/memblock/tests/alloc_api.c      | 241 ++++++++----
> > >  .../memblock/tests/alloc_helpers_api.c        | 135 +++++--
> > >  tools/testing/memblock/tests/alloc_nid_api.c  | 371 ++++++++++++------
> > >  tools/testing/memblock/tests/basic_api.c      | 365 ++++++++++++-----
> > >  tools/testing/memblock/tests/common.c         |  58 +++
> > >  tools/testing/memblock/tests/common.h         |  54 +++
> > >  6 files changed, 880 insertions(+), 344 deletions(-)
> > > 
> > > diff --git a/tools/testing/memblock/tests/alloc_api.c b/tools/testing/memblock/tests/alloc_api.c
> > > index d1aa7e15c18d..96df033d4300 100644
> > > --- a/tools/testing/memblock/tests/alloc_api.c
> > > +++ b/tools/testing/memblock/tests/alloc_api.c
> > 
> > ...
> > 
> > > @@ -729,6 +820,12 @@ static int alloc_no_memory_check(void)
> > >  
> > >  int memblock_alloc_checks(void)
> > >  {
> > > +	static const char func_testing[] = "memblock_alloc";
> > > +
> > > +	prefix_reset();
> > > +	prefix_push(func_testing);
> > > +	test_print("Running %s tests...\n", func_testing);
> > 
> > Why not 
> > 
> > 	test_print("Running memblock_alloc tests...\n");
> > 
> > ?
> > 
> > (applies to other cases below)
> 
> Both prefix_push() and test_print() are using that string, and I thought
> it made sense to use a constant instead of hard coding the string in both
> places. Is it better to hard code the string in this case?

Oh, missed that.
I'd drop static, it doesn't really matter here.
 
> > > +
> > >  	reset_memblock_attributes();
> > >  	dummy_physical_memory_init();
> > 
> > ...
> > 
> > > diff --git a/tools/testing/memblock/tests/alloc_helpers_api.c b/tools/testing/memblock/tests/alloc_helpers_api.c
> > > index 963a966db461..f6eaed540427 100644
> > > --- a/tools/testing/memblock/tests/alloc_helpers_api.c
> > > +++ b/tools/testing/memblock/tests/alloc_helpers_api.c
> > 
> > ...
> > 
> > > @@ -378,6 +423,12 @@ static int alloc_from_min_addr_cap_check(void)
> > >  
> > >  int memblock_alloc_helpers_checks(void)
> > >  {
> > > +	static const char func_testing[] = "memblock_alloc_from";
> > > +
> > > +	prefix_reset();
> > > +	prefix_push(func_testing);
> > > +	test_print("Running %s tests...\n", func_testing);
> > > +
> > >  	reset_memblock_attributes();
> > >  	dummy_physical_memory_init();
> > >  
> > > diff --git a/tools/testing/memblock/tests/alloc_nid_api.c b/tools/testing/memblock/tests/alloc_nid_api.c
> > > index 6390206e50e1..601f4a7ee30d 100644
> > > --- a/tools/testing/memblock/tests/alloc_nid_api.c
> > > +++ b/tools/testing/memblock/tests/alloc_nid_api.c
> > 
> > ...
> > 
> > > @@ -1150,6 +1263,12 @@ static int alloc_try_nid_low_max_check(void)
> > >  
> > >  int memblock_alloc_nid_checks(void)
> > >  {
> > > +	static const char func_testing[] = "memblock_alloc_try_nid";
> > > +
> > > +	prefix_reset();
> > > +	prefix_push(func_testing);
> > > +	test_print("Running %s tests...\n", func_testing);
> > > +
> > >  	reset_memblock_attributes();
> > >  	dummy_physical_memory_init();
> > >  
> > > @@ -1170,5 +1289,7 @@ int memblock_alloc_nid_checks(void)
> > >  
> > >  	dummy_physical_memory_cleanup();
> > >  
> > > +	prefix_pop();
> > > +
> > >  	return 0;
> > >  }
> > > diff --git a/tools/testing/memblock/tests/basic_api.c b/tools/testing/memblock/tests/basic_api.c
> > > index a7bc180316d6..f223a9a57be7 100644
> > > --- a/tools/testing/memblock/tests/basic_api.c
> > > +++ b/tools/testing/memblock/tests/basic_api.c
> > > @@ -4,21 +4,30 @@
> > >  #include "basic_api.h"
> > >  
> > >  #define EXPECTED_MEMBLOCK_REGIONS			128
> > > +#define FUNC_ADD					"memblock_add"
> > > +#define FUNC_RESERVE					"memblock_reserve"
> > > +#define FUNC_REMOVE					"memblock_remove"
> > > +#define FUNC_FREE					"memblock_free"
> > >  
> > >  static int memblock_initialization_check(void)
> > >  {
> > > -	assert(memblock.memory.regions);
> > > -	assert(memblock.memory.cnt == 1);
> > > -	assert(memblock.memory.max == EXPECTED_MEMBLOCK_REGIONS);
> > > -	assert(strcmp(memblock.memory.name, "memory") == 0);
> > > +	prefix_push(__func__);
> > >  
> > > -	assert(memblock.reserved.regions);
> > > -	assert(memblock.reserved.cnt == 1);
> > > -	assert(memblock.memory.max == EXPECTED_MEMBLOCK_REGIONS);
> > > -	assert(strcmp(memblock.reserved.name, "reserved") == 0);
> > > +	ASSERT_NE(memblock.memory.regions, NULL);
> > > +	ASSERT_EQ(memblock.memory.cnt, 1);
> > > +	ASSERT_EQ(memblock.memory.max, EXPECTED_MEMBLOCK_REGIONS);
> > > +	ASSERT_EQ(strcmp(memblock.memory.name, "memory"), 0);
> > >  
> > > -	assert(!memblock.bottom_up);
> > > -	assert(memblock.current_limit == MEMBLOCK_ALLOC_ANYWHERE);
> > > +	ASSERT_NE(memblock.reserved.regions, NULL);
> > > +	ASSERT_EQ(memblock.reserved.cnt, 1);
> > > +	ASSERT_EQ(memblock.memory.max, EXPECTED_MEMBLOCK_REGIONS);
> > > +	ASSERT_EQ(strcmp(memblock.reserved.name, "reserved"), 0);
> > > +
> > > +	ASSERT_EQ(memblock.bottom_up, false);
> > > +	ASSERT_EQ(memblock.current_limit, MEMBLOCK_ALLOC_ANYWHERE);
> > > +
> > > +	test_pass();
> > > +	prefix_pop();
> > >  
> > >  	return 0;
> > >  }
> > > @@ -40,14 +49,19 @@ static int memblock_add_simple_check(void)
> > >  		.size = SZ_4M
> > >  	};
> > >  
> > > +	prefix_push(__func__);
> > > +
> > >  	reset_memblock_regions();
> > >  	memblock_add(r.base, r.size);
> > >  
> > > -	assert(rgn->base == r.base);
> > > -	assert(rgn->size == r.size);
> > > +	ASSERT_EQ(rgn->base, r.base);
> > > +	ASSERT_EQ(rgn->size, r.size);
> > > +
> > > +	ASSERT_EQ(memblock.memory.cnt, 1);
> > > +	ASSERT_EQ(memblock.memory.total_size, r.size);
> > >  
> > > -	assert(memblock.memory.cnt == 1);
> > > -	assert(memblock.memory.total_size == r.size);
> > > +	test_pass();
> > > +	prefix_pop();
> > >  
> > >  	return 0;
> > >  }
> > > @@ -69,18 +83,27 @@ static int memblock_add_node_simple_check(void)
> > >  		.size = SZ_16M
> > >  	};
> > >  
> > > +	prefix_pop();
> > > +	prefix_push("memblock_add_node");
> > > +	prefix_push(__func__);
> > 
> > I think there is no need to change the prefix from memblock_add to
> > memblock_add_node here.
> > 
> > ok 3 : memblock_add: memblock_add_node_simple_check: passed
> > 
> > provides enough information.
> >
> 
> Will do.
> 
> > > +
> > >  	reset_memblock_regions();
> > >  	memblock_add_node(r.base, r.size, 1, MEMBLOCK_HOTPLUG);
> > >  
> > > -	assert(rgn->base == r.base);
> > > -	assert(rgn->size == r.size);
> > > +	ASSERT_EQ(rgn->base, r.base);
> > > +	ASSERT_EQ(rgn->size, r.size);
> > >  #ifdef CONFIG_NUMA
> > > -	assert(rgn->nid == 1);
> > > +	ASSERT_EQ(rgn->nid, 1);
> > >  #endif
> > > -	assert(rgn->flags == MEMBLOCK_HOTPLUG);
> > > +	ASSERT_EQ(rgn->flags, MEMBLOCK_HOTPLUG);
> > > +
> > > +	ASSERT_EQ(memblock.memory.cnt, 1);
> > > +	ASSERT_EQ(memblock.memory.total_size, r.size);
> > >  
> > > -	assert(memblock.memory.cnt == 1);
> > > -	assert(memblock.memory.total_size == r.size);
> > > +	test_pass();
> > > +	prefix_pop();
> > > +	prefix_pop();
> > > +	prefix_push(FUNC_ADD);
> > >  
> > >  	return 0;
> > >  }
> > 
> > -- 
> > Sincerely yours,
> > Mike.
> 
> Thanks,
> Rebecca

-- 
Sincerely yours,
Mike.