The patch titled
Subject: rust: add a rust helper for krealloc()
has been added to the -mm mm-unstable branch. Its filename is
rust-add-a-rust-helper-for-krealloc.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/rust-add-a-rust-helper-for-krealloc.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days
------------------------------------------------------
From: Kent Overstreet <kent.overstreet@xxxxxxxxx>
Subject: rust: add a rust helper for krealloc()
Date: Thu, 21 Mar 2024 09:36:46 -0700
Memory allocation profiling is turning krealloc() into a nontrivial macro
- so for now, we need a helper for it.
Until we have proper support on the rust side for memory allocation
profiling this does mean that all Rust allocations will be accounted to
the helper.
Link: https://lkml.kernel.org/r/20240321163705.3067592-25-surenb@xxxxxxxxxx
Signed-off-by: Kent Overstreet <kent.overstreet@xxxxxxxxx>
Signed-off-by: Suren Baghdasaryan <surenb@xxxxxxxxxx>
Reviewed-by: Alice Ryhl <aliceryhl@xxxxxxxxxx>
Acked-by: Miguel Ojeda <ojeda@xxxxxxxxxx>
Cc: Alex Gaynor <alex.gaynor@xxxxxxxxx>
Cc: Wedson Almeida Filho <wedsonaf@xxxxxxxxx>
Cc: Boqun Feng <boqun.feng@xxxxxxxxx>
Cc: Gary Guo <gary@xxxxxxxxxxx>
Cc: "Björn Roy Baron" <bjorn3_gh@xxxxxxxxxxxxxx>
Cc: Benno Lossin <benno.lossin@xxxxxxxxx>
Cc: Andreas Hindborg <a.hindborg@xxxxxxxxxxx>
Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>
Cc: Christoph Lameter <cl@xxxxxxxxx>
Cc: Dennis Zhou <dennis@xxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Cc: Pasha Tatashin <pasha.tatashin@xxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Tejun Heo <tj@xxxxxxxxxx>
Cc: Vlastimil Babka <vbabka@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
rust/helpers.c | 8 ++++++++
1 file changed, 8 insertions(+)
--- a/rust/helpers.c~rust-add-a-rust-helper-for-krealloc
+++ a/rust/helpers.c
@@ -28,6 +28,7 @@
#include <linux/mutex.h>
#include <linux/refcount.h>
#include <linux/sched/signal.h>
+#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/wait.h>
#include <linux/workqueue.h>
@@ -157,6 +158,13 @@ void rust_helper_init_work_with_key(stru
}
EXPORT_SYMBOL_GPL(rust_helper_init_work_with_key);
+void * __must_check __realloc_size(2)
+rust_helper_krealloc(const void *objp, size_t new_size, gfp_t flags)
+{
+ return krealloc(objp, new_size, flags);
+}
+EXPORT_SYMBOL_GPL(rust_helper_krealloc);
+
/*
* `bindgen` binds the C `size_t` type as the Rust `usize` type, so we can
* use it in contexts where Rust expects a `usize` like slice (array) indices.
_
Patches currently in -mm which might be from kent.overstreet@xxxxxxxxx are
fix-missing-vmalloch-includes.patch
asm-generic-ioh-kill-vmalloch-dependency.patch
mm-slub-mark-slab_free_freelist_hook-__always_inline.patch
scripts-kallysms-always-include-__start-and-__stop-symbols.patch
fs-convert-alloc_inode_sb-to-a-macro.patch
rust-add-a-rust-helper-for-krealloc.patch
mempool-hook-up-to-memory-allocation-profiling.patch
mm-percpu-introduce-pcpuobj_ext.patch
mm-percpu-add-codetag-reference-into-pcpuobj_ext.patch
mm-vmalloc-enable-memory-allocation-profiling.patch
rhashtable-plumb-through-alloc-tag.patch
maintainers-add-entries-for-code-tagging-and-memory-allocation-profiling.patch
memprofiling-documentation.patch
