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Date: Sat, 27 Aug 2022 00:42:47 -0500
From: Rebecca Mckeever <remckee0@...il.com>
To: Mike Rapoport <rppt@...nel.org>, linux-mm@...ck.org,
linux-kernel@...r.kernel.org
Cc: David Hildenbrand <david@...hat.com>,
Rebecca Mckeever <remckee0@...il.com>
Subject: [PATCH v3 5/8] memblock tests: update alloc_api to test memblock_alloc_raw
Update memblock_alloc() tests so that they test either memblock_alloc()
or memblock_alloc_raw() depending on the value of alloc_test_flags. Run
through all the existing tests in memblock_alloc_api twice: once for
memblock_alloc() and once for memblock_alloc_raw().
When the tests run memblock_alloc(), they test that the entire memory
region is zero. When the tests run memblock_alloc_raw(), they test that
the entire memory region is nonzero. The content of the memory region is
initialized to nonzero, and we expect it to remain unchanged if running
memblock_alloc_raw().
Signed-off-by: Rebecca Mckeever <remckee0@...il.com>
---
tools/testing/memblock/tests/alloc_api.c | 91 +++++++++++++++---------
tools/testing/memblock/tests/common.h | 27 +++++++
2 files changed, 85 insertions(+), 33 deletions(-)
diff --git a/tools/testing/memblock/tests/alloc_api.c b/tools/testing/memblock/tests/alloc_api.c
index e20e326d636f..36dd7e254cce 100644
--- a/tools/testing/memblock/tests/alloc_api.c
+++ b/tools/testing/memblock/tests/alloc_api.c
@@ -1,6 +1,22 @@
// SPDX-License-Identifier: GPL-2.0-or-later
#include "alloc_api.h"
+static int alloc_test_flags = TEST_F_NONE;
+
+static inline const char * const get_memblock_alloc_name(int flags)
+{
+ if (flags & TEST_F_RAW)
+ return "memblock_alloc_raw";
+ return "memblock_alloc";
+}
+
+static inline void *run_memblock_alloc(phys_addr_t size, phys_addr_t align)
+{
+ if (alloc_test_flags & TEST_F_RAW)
+ return memblock_alloc_raw(size, align);
+ return memblock_alloc(size, align);
+}
+
/*
* A simple test that tries to allocate a small memory region.
* Expect to allocate an aligned region near the end of the available memory.
@@ -19,10 +35,10 @@ static int alloc_top_down_simple_check(void)
expected_start = memblock_end_of_DRAM() - SMP_CACHE_BYTES;
- allocated_ptr = memblock_alloc(size, SMP_CACHE_BYTES);
+ allocated_ptr = run_memblock_alloc(size, SMP_CACHE_BYTES);
ASSERT_NE(allocated_ptr, NULL);
- ASSERT_MEM_EQ(allocated_ptr, 0, size);
+ assert_mem_content(allocated_ptr, size, alloc_test_flags);
ASSERT_EQ(rgn->size, size);
ASSERT_EQ(rgn->base, expected_start);
@@ -79,10 +95,10 @@ static int alloc_top_down_disjoint_check(void)
memblock_reserve(r1.base, r1.size);
- allocated_ptr = memblock_alloc(r2_size, alignment);
+ allocated_ptr = run_memblock_alloc(r2_size, alignment);
ASSERT_NE(allocated_ptr, NULL);
- ASSERT_MEM_EQ(allocated_ptr, 0, r2_size);
+ assert_mem_content(allocated_ptr, r2_size, alloc_test_flags);
ASSERT_EQ(rgn1->size, r1.size);
ASSERT_EQ(rgn1->base, r1.base);
@@ -126,10 +142,10 @@ static int alloc_top_down_before_check(void)
memblock_reserve(memblock_end_of_DRAM() - total_size, r1_size);
- allocated_ptr = memblock_alloc(r2_size, SMP_CACHE_BYTES);
+ allocated_ptr = run_memblock_alloc(r2_size, SMP_CACHE_BYTES);
ASSERT_NE(allocated_ptr, NULL);
- ASSERT_MEM_EQ(allocated_ptr, 0, r2_size);
+ assert_mem_content(allocated_ptr, r2_size, alloc_test_flags);
ASSERT_EQ(rgn->size, total_size);
ASSERT_EQ(rgn->base, memblock_end_of_DRAM() - total_size);
@@ -176,10 +192,10 @@ static int alloc_top_down_after_check(void)
memblock_reserve(r1.base, r1.size);
- allocated_ptr = memblock_alloc(r2_size, SMP_CACHE_BYTES);
+ allocated_ptr = run_memblock_alloc(r2_size, SMP_CACHE_BYTES);
ASSERT_NE(allocated_ptr, NULL);
- ASSERT_MEM_EQ(allocated_ptr, 0, r2_size);
+ assert_mem_content(allocated_ptr, r2_size, alloc_test_flags);
ASSERT_EQ(rgn->size, total_size);
ASSERT_EQ(rgn->base, r1.base - r2_size);
@@ -228,10 +244,10 @@ static int alloc_top_down_second_fit_check(void)
memblock_reserve(r1.base, r1.size);
memblock_reserve(r2.base, r2.size);
- allocated_ptr = memblock_alloc(r3_size, SMP_CACHE_BYTES);
+ allocated_ptr = run_memblock_alloc(r3_size, SMP_CACHE_BYTES);
ASSERT_NE(allocated_ptr, NULL);
- ASSERT_MEM_EQ(allocated_ptr, 0, r3_size);
+ assert_mem_content(allocated_ptr, r3_size, alloc_test_flags);
ASSERT_EQ(rgn->size, r2.size + r3_size);
ASSERT_EQ(rgn->base, r2.base - r3_size);
@@ -284,10 +300,10 @@ static int alloc_in_between_generic_check(void)
memblock_reserve(r1.base, r1.size);
memblock_reserve(r2.base, r2.size);
- allocated_ptr = memblock_alloc(r3_size, SMP_CACHE_BYTES);
+ allocated_ptr = run_memblock_alloc(r3_size, SMP_CACHE_BYTES);
ASSERT_NE(allocated_ptr, NULL);
- ASSERT_MEM_EQ(allocated_ptr, 0, r3_size);
+ assert_mem_content(allocated_ptr, r3_size, alloc_test_flags);
ASSERT_EQ(rgn->size, total_size);
ASSERT_EQ(rgn->base, r1.base - r2.size - r3_size);
@@ -332,7 +348,7 @@ static int alloc_small_gaps_generic_check(void)
region_end += gap_size + region_size;
}
- allocated_ptr = memblock_alloc(region_size, SMP_CACHE_BYTES);
+ allocated_ptr = run_memblock_alloc(region_size, SMP_CACHE_BYTES);
ASSERT_EQ(allocated_ptr, NULL);
@@ -356,7 +372,7 @@ static int alloc_all_reserved_generic_check(void)
/* Simulate full memory */
memblock_reserve(memblock_start_of_DRAM(), MEM_SIZE);
- allocated_ptr = memblock_alloc(SZ_256, SMP_CACHE_BYTES);
+ allocated_ptr = run_memblock_alloc(SZ_256, SMP_CACHE_BYTES);
ASSERT_EQ(allocated_ptr, NULL);
@@ -392,7 +408,7 @@ static int alloc_no_space_generic_check(void)
/* Simulate almost-full memory */
memblock_reserve(memblock_start_of_DRAM(), reserved_size);
- allocated_ptr = memblock_alloc(SZ_1K, SMP_CACHE_BYTES);
+ allocated_ptr = run_memblock_alloc(SZ_1K, SMP_CACHE_BYTES);
ASSERT_EQ(allocated_ptr, NULL);
@@ -427,10 +443,10 @@ static int alloc_limited_space_generic_check(void)
/* Simulate almost-full memory */
memblock_reserve(memblock_start_of_DRAM(), reserved_size);
- allocated_ptr = memblock_alloc(available_size, SMP_CACHE_BYTES);
+ allocated_ptr = run_memblock_alloc(available_size, SMP_CACHE_BYTES);
ASSERT_NE(allocated_ptr, NULL);
- ASSERT_MEM_EQ(allocated_ptr, 0, available_size);
+ assert_mem_content(allocated_ptr, available_size, alloc_test_flags);
ASSERT_EQ(rgn->size, MEM_SIZE);
ASSERT_EQ(rgn->base, memblock_start_of_DRAM());
@@ -457,7 +473,7 @@ static int alloc_no_memory_generic_check(void)
reset_memblock_regions();
- allocated_ptr = memblock_alloc(SZ_1K, SMP_CACHE_BYTES);
+ allocated_ptr = run_memblock_alloc(SZ_1K, SMP_CACHE_BYTES);
ASSERT_EQ(allocated_ptr, NULL);
ASSERT_EQ(rgn->size, 0);
@@ -491,7 +507,7 @@ static int alloc_too_large_generic_check(void)
setup_memblock();
- allocated_ptr = memblock_alloc(MEM_SIZE + SZ_2, SMP_CACHE_BYTES);
+ allocated_ptr = run_memblock_alloc(MEM_SIZE + SZ_2, SMP_CACHE_BYTES);
ASSERT_EQ(allocated_ptr, NULL);
ASSERT_EQ(rgn->size, 0);
@@ -517,10 +533,10 @@ static int alloc_bottom_up_simple_check(void)
setup_memblock();
- allocated_ptr = memblock_alloc(SZ_2, SMP_CACHE_BYTES);
+ allocated_ptr = run_memblock_alloc(SZ_2, SMP_CACHE_BYTES);
ASSERT_NE(allocated_ptr, NULL);
- ASSERT_MEM_EQ(allocated_ptr, 0, SZ_2);
+ assert_mem_content(allocated_ptr, SZ_2, alloc_test_flags);
ASSERT_EQ(rgn->size, SZ_2);
ASSERT_EQ(rgn->base, memblock_start_of_DRAM());
@@ -575,10 +591,10 @@ static int alloc_bottom_up_disjoint_check(void)
memblock_reserve(r1.base, r1.size);
- allocated_ptr = memblock_alloc(r2_size, alignment);
+ allocated_ptr = run_memblock_alloc(r2_size, alignment);
ASSERT_NE(allocated_ptr, NULL);
- ASSERT_MEM_EQ(allocated_ptr, 0, r2_size);
+ assert_mem_content(allocated_ptr, r2_size, alloc_test_flags);
ASSERT_EQ(rgn1->size, r1.size);
ASSERT_EQ(rgn1->base, r1.base);
@@ -619,10 +635,10 @@ static int alloc_bottom_up_before_check(void)
memblock_reserve(memblock_start_of_DRAM() + r1_size, r2_size);
- allocated_ptr = memblock_alloc(r1_size, SMP_CACHE_BYTES);
+ allocated_ptr = run_memblock_alloc(r1_size, SMP_CACHE_BYTES);
ASSERT_NE(allocated_ptr, NULL);
- ASSERT_MEM_EQ(allocated_ptr, 0, r1_size);
+ assert_mem_content(allocated_ptr, r1_size, alloc_test_flags);
ASSERT_EQ(rgn->size, total_size);
ASSERT_EQ(rgn->base, memblock_start_of_DRAM());
@@ -668,10 +684,10 @@ static int alloc_bottom_up_after_check(void)
memblock_reserve(r1.base, r1.size);
- allocated_ptr = memblock_alloc(r2_size, SMP_CACHE_BYTES);
+ allocated_ptr = run_memblock_alloc(r2_size, SMP_CACHE_BYTES);
ASSERT_NE(allocated_ptr, NULL);
- ASSERT_MEM_EQ(allocated_ptr, 0, r2_size);
+ assert_mem_content(allocated_ptr, r2_size, alloc_test_flags);
ASSERT_EQ(rgn->size, total_size);
ASSERT_EQ(rgn->base, r1.base);
@@ -721,10 +737,10 @@ static int alloc_bottom_up_second_fit_check(void)
memblock_reserve(r1.base, r1.size);
memblock_reserve(r2.base, r2.size);
- allocated_ptr = memblock_alloc(r3_size, SMP_CACHE_BYTES);
+ allocated_ptr = run_memblock_alloc(r3_size, SMP_CACHE_BYTES);
ASSERT_NE(allocated_ptr, NULL);
- ASSERT_MEM_EQ(allocated_ptr, 0, r3_size);
+ assert_mem_content(allocated_ptr, r3_size, alloc_test_flags);
ASSERT_EQ(rgn->size, r2.size + r3_size);
ASSERT_EQ(rgn->base, r2.base);
@@ -856,13 +872,14 @@ static int alloc_too_large_check(void)
return 0;
}
-int memblock_alloc_checks(void)
+static int memblock_alloc_checks_internal(int flags)
{
- const char *func_testing = "memblock_alloc";
+ const char *func = get_memblock_alloc_name(flags);
+ alloc_test_flags = flags;
prefix_reset();
- prefix_push(func_testing);
- test_print("Running %s tests...\n", func_testing);
+ prefix_push(func);
+ test_print("Running %s tests...\n", func);
reset_memblock_attributes();
dummy_physical_memory_init();
@@ -886,3 +903,11 @@ int memblock_alloc_checks(void)
return 0;
}
+
+int memblock_alloc_checks(void)
+{
+ memblock_alloc_checks_internal(TEST_F_NONE);
+ memblock_alloc_checks_internal(TEST_F_RAW);
+
+ return 0;
+}
diff --git a/tools/testing/memblock/tests/common.h b/tools/testing/memblock/tests/common.h
index c53f9c365714..78128e109a95 100644
--- a/tools/testing/memblock/tests/common.h
+++ b/tools/testing/memblock/tests/common.h
@@ -12,6 +12,13 @@
#define MEM_SIZE SZ_16K
+enum test_flags {
+ /* No special request. */
+ TEST_F_NONE = 0x0,
+ /* Perform raw allocations (no zeroing of memory). */
+ TEST_F_RAW = 0x1,
+};
+
/**
* ASSERT_EQ():
* Check the condition
@@ -63,6 +70,18 @@
} \
} while (0)
+/**
+ * ASSERT_MEM_NE():
+ * Check that none of the first @_size bytes of @_seen are equal to @_expected.
+ * If false, print failed test message (if running with --verbose) and then
+ * assert.
+ */
+#define ASSERT_MEM_NE(_seen, _expected, _size) do { \
+ for (int _i = 0; _i < (_size); _i++) { \
+ ASSERT_NE(((char *)_seen)[_i], (_expected)); \
+ } \
+} while (0)
+
#define PREFIX_PUSH() prefix_push(__func__)
/*
@@ -116,4 +135,12 @@ static inline void run_bottom_up(int (*func)())
prefix_pop();
}
+static inline void assert_mem_content(void *mem, int size, int flags)
+{
+ if (flags & TEST_F_RAW)
+ ASSERT_MEM_NE(mem, 0, size);
+ else
+ ASSERT_MEM_EQ(mem, 0, size);
+}
+
#endif
--
2.25.1
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