+ lib-test_vmallocc-allow-built-in-execution.patch added to mm-new branch

+ lib-test_vmallocc-allow-built-in-execution.patch added to mm-new branch

[Andrew Morton]

The patch titled
     Subject: lib/test_vmalloc.c: allow built-in execution
has been added to the -mm mm-new branch.  Its filename is
     lib-test_vmallocc-allow-built-in-execution.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/lib-test_vmallocc-allow-built-in-execution.patch

This patch will later appear in the mm-new branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: "Uladzislau Rezki (Sony)" <urezki@gmail.com>
Subject: lib/test_vmalloc.c: allow built-in execution
Date: Thu, 17 Apr 2025 18:12:14 +0200

Remove the dependency on module loading ("m") for the vmalloc test suite,
enabling it to be built directly into the kernel, so both ("=m") and
("=y") are supported.

Motivation:
- Faster debugging/testing of vmalloc code;
- It allows to configure the test via kernel-boot parameters.

Configuration example:
  test_vmalloc.nr_threads=64
  test_vmalloc.run_test_mask=7
  test_vmalloc.sequential_test_order=1

Link: https://lkml.kernel.org/r/20250417161216.88318-2-urezki@gmail.com
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Cc: Baoquan He <bhe@redhat.com>
Cc: Christop Hellwig <hch@infradead.org>
Cc: Mateusz Guzik <mjguzik@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 lib/Kconfig.debug  |    3 +--
 lib/test_vmalloc.c |    5 +++--
 2 files changed, 4 insertions(+), 4 deletions(-)

--- a/lib/Kconfig.debug~lib-test_vmallocc-allow-built-in-execution
+++ a/lib/Kconfig.debug
@@ -2574,8 +2574,7 @@ config TEST_BITOPS
 config TEST_VMALLOC
 	tristate "Test module for stress/performance analysis of vmalloc allocator"
 	default n
-       depends on MMU
-	depends on m
+	depends on MMU
 	help
 	  This builds the "test_vmalloc" module that should be used for
 	  stress and performance analysis. So, any new change for vmalloc
--- a/lib/test_vmalloc.c~lib-test_vmallocc-allow-built-in-execution
+++ a/lib/test_vmalloc.c
@@ -591,10 +591,11 @@ static void do_concurrent_test(void)
 	kvfree(tdriver);
 }
 
-static int vmalloc_test_init(void)
+static int __init vmalloc_test_init(void)
 {
 	do_concurrent_test();
-	return -EAGAIN; /* Fail will directly unload the module */
+	/* Fail will directly unload the module */
+	return IS_BUILTIN(CONFIG_TEST_VMALLOC) ? 0:-EAGAIN;
 }
 
 module_init(vmalloc_test_init)
_

Patches currently in -mm which might be from urezki@gmail.com are

vmalloc-add-for_each_vmap_node-helper.patch
vmalloc-switch-to-for_each_vmap_node-helper.patch
vmalloc-use-for_each_vmap_node-in-purge-vmap-area.patch
vmalloc-use-atomic_long_add_return_relaxed.patch
lib-test_vmallocc-replace-rwsem-to-srcu-for-setup.patch
lib-test_vmallocc-allow-built-in-execution.patch
maintainers-add-test_vmallocc-to-vmalloc-section.patch
vmalloc-align-nr_vmalloc_pages-and-vmap_lazy_nr.patch