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mm/memblock: remove empty dummy entry

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The dummy entry is introduced in the initial implementation of lmb in
commit 7c8c6b9776 ("powerpc: Merge lmb.c and make MM initialization
use it.").

As the comment says the empty dummy entry is to simplify the code.

	/* Create a dummy zero size LMB which will get coalesced away later.
         * This simplifies the lmb_add() code below...
         */

While current code is reimplemented by Tejun in commit 784656f9c6
("memblock: Reimplement memblock_add_region()"). This empty dummy entry
seems not benefit the code any more.

Let's remove it.

Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
CC: Paul Mackerras <paulus@ozlabs.org>
CC: Tejun Heo <tj@kernel.org>
CC: Mike Rapoport <rppt@kernel.org>
Link: https://lore.kernel.org/r/20240405015821.13411-1-richard.weiyang@gmail.com
Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
This commit is contained in:
Wei Yang
2024-04-05 01:58:21 +00:00
committed by Mike Rapoport (IBM)
parent c3f38fa61a
commit 721f4a6526
3 changed files with 8 additions and 11 deletions
Download Patch File Download Diff File Expand all files Collapse all files

8
tools/testing/memblock/tests/basic_api.c
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@@ -15,12 +15,12 @@ static int memblock_initialization_check(void)
PREFIX_PUSH();
ASSERT_NE(memblock.memory.regions, NULL);
ASSERT_EQ(memblock.memory.cnt, 1);
ASSERT_EQ(memblock.memory.cnt, 0);
ASSERT_EQ(memblock.memory.max, EXPECTED_MEMBLOCK_REGIONS);
ASSERT_EQ(strcmp(memblock.memory.name, "memory"), 0);
ASSERT_NE(memblock.reserved.regions, NULL);
ASSERT_EQ(memblock.reserved.cnt, 1);
ASSERT_EQ(memblock.reserved.cnt, 0);
ASSERT_EQ(memblock.memory.max, EXPECTED_MEMBLOCK_REGIONS);
ASSERT_EQ(strcmp(memblock.reserved.name, "reserved"), 0);
@@ -1295,7 +1295,7 @@ static int memblock_remove_only_region_check(void)
ASSERT_EQ(rgn->base, 0);
ASSERT_EQ(rgn->size, 0);
ASSERT_EQ(memblock.memory.cnt, 1);
ASSERT_EQ(memblock.memory.cnt, 0);
ASSERT_EQ(memblock.memory.total_size, 0);
test_pass_pop();
@@ -1723,7 +1723,7 @@ static int memblock_free_only_region_check(void)
ASSERT_EQ(rgn->base, 0);
ASSERT_EQ(rgn->size, 0);
ASSERT_EQ(memblock.reserved.cnt, 1);
ASSERT_EQ(memblock.reserved.cnt, 0);
ASSERT_EQ(memblock.reserved.total_size, 0);
test_pass_pop();