linux-kernel - [PATCH v10 19/21] mm: Add vmalloc_huge

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Message-ID: <20250312151634.2183278-20-bigeasy@linutronix.de>
Date: Wed, 12 Mar 2025 16:16:32 +0100
From: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To: linux-kernel@...r.kernel.org
Cc: André Almeida <andrealmeid@...lia.com>,
	Darren Hart <dvhart@...radead.org>,
	Davidlohr Bueso <dave@...olabs.net>,
	Ingo Molnar <mingo@...hat.com>,
	Juri Lelli <juri.lelli@...hat.com>,
	Peter Zijlstra <peterz@...radead.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Valentin Schneider <vschneid@...hat.com>,
	Waiman Long <longman@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Uladzislau Rezki <urezki@...il.com>,
	Christoph Hellwig <hch@...radead.org>,
	linux-mm@...ck.org,
	Christoph Hellwig <hch@....de>,
	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Subject: [PATCH v10 19/21] mm: Add vmalloc_huge_node()

From: Peter Zijlstra <peterz@...radead.org>

To enable node specific hash-tables.

[bigeasy: use __vmalloc_node_range_noprof(), add nommu bits]

Cc: Andrew Morton <akpm@...ux-foundation.org>
Cc: Uladzislau Rezki <urezki@...il.com>
Cc: Christoph Hellwig <hch@...radead.org>
Cc: linux-mm@...ck.org
Signed-off-by: Peter Zijlstra (Intel) <peterz@...radead.org>
Reviewed-by: Christoph Hellwig <hch@....de>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
---
 include/linux/vmalloc.h | 3 +++
 mm/nommu.c              | 5 +++++
 mm/vmalloc.c            | 7 +++++++
 3 files changed, 15 insertions(+)

diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h
index 31e9ffd936e39..09c3e3e33f1f8 100644
--- a/include/linux/vmalloc.h
+++ b/include/linux/vmalloc.h
@@ -171,6 +171,9 @@ void *__vmalloc_node_noprof(unsigned long size, unsigned long align, gfp_t gfp_m
 void *vmalloc_huge_noprof(unsigned long size, gfp_t gfp_mask) __alloc_size(1);
 #define vmalloc_huge(...)	alloc_hooks(vmalloc_huge_noprof(__VA_ARGS__))
 
+void *vmalloc_huge_node_noprof(unsigned long size, gfp_t gfp_mask, int node) __alloc_size(1);
+#define vmalloc_huge_node(...)	alloc_hooks(vmalloc_huge_node_noprof(__VA_ARGS__))
+
 extern void *__vmalloc_array_noprof(size_t n, size_t size, gfp_t flags) __alloc_size(1, 2);
 #define __vmalloc_array(...)	alloc_hooks(__vmalloc_array_noprof(__VA_ARGS__))
 
diff --git a/mm/nommu.c b/mm/nommu.c
index baa79abdaf037..d04e601a8f4d7 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -209,6 +209,11 @@ EXPORT_SYMBOL(vmalloc_noprof);
 
 void *vmalloc_huge_noprof(unsigned long size, gfp_t gfp_mask) __weak __alias(__vmalloc_noprof);
 
+void *vmalloc_huge_node_noprof(unsigned long size, gfp_t gfp_mask, int node)
+{
+	return vmalloc_huge_noprof(size, gfp_mask);
+}
+
 /*
  *	vzalloc - allocate virtually contiguous memory with zero fill
  *
diff --git a/mm/vmalloc.c b/mm/vmalloc.c
index a6e7acebe9adf..69247b46413ca 100644
--- a/mm/vmalloc.c
+++ b/mm/vmalloc.c
@@ -3966,6 +3966,13 @@ void *vmalloc_huge_noprof(unsigned long size, gfp_t gfp_mask)
 }
 EXPORT_SYMBOL_GPL(vmalloc_huge_noprof);
 
+void *vmalloc_huge_node_noprof(unsigned long size, gfp_t gfp_mask, int node)
+{
+	return __vmalloc_node_range_noprof(size, 1, VMALLOC_START, VMALLOC_END,
+					   gfp_mask, PAGE_KERNEL, VM_ALLOW_HUGE_VMAP,
+					   node, __builtin_return_address(0));
+}
+
 /**
  * vzalloc - allocate virtually contiguous memory with zero fill
  * @size:    allocation size
-- 
2.47.2