From: Suren Baghdasaryan <surenb@google.com>
To: akpm@linux-foundation.org
Cc: kent.overstreet@linux.dev, mhocko@suse.com, vbabka@suse.cz,
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"Miguel Ojeda" <ojeda@kernel.org>,
"Alex Gaynor" <alex.gaynor@gmail.com>,
"Wedson Almeida Filho" <wedsonaf@gmail.com>,
"Boqun Feng" <boqun.feng@gmail.com>,
"Gary Guo" <gary@garyguo.net>,
"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
"Benno Lossin" <benno.lossin@proton.me>,
"Andreas Hindborg" <a.hindborg@samsung.com>,
"Alice Ryhl" <aliceryhl@google.com>,
rust-for-linux@vger.kernel.org
Subject: [PATCH v4 24/36] rust: Add a rust helper for krealloc()
Date: Wed, 21 Feb 2024 11:40:37 -0800 [thread overview]
Message-ID: <20240221194052.927623-25-surenb@google.com> (raw)
In-Reply-To: <20240221194052.927623-1-surenb@google.com>
From: Kent Overstreet <kent.overstreet@linux.dev>
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.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Cc: Miguel Ojeda <ojeda@kernel.org>
Cc: Alex Gaynor <alex.gaynor@gmail.com>
Cc: Wedson Almeida Filho <wedsonaf@gmail.com>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Gary Guo <gary@garyguo.net>
Cc: "Björn Roy Baron" <bjorn3_gh@protonmail.com>
Cc: Benno Lossin <benno.lossin@proton.me>
Cc: Andreas Hindborg <a.hindborg@samsung.com>
Cc: Alice Ryhl <aliceryhl@google.com>
Cc: rust-for-linux@vger.kernel.org
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
---
rust/helpers.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/rust/helpers.c b/rust/helpers.c
index 70e59efd92bc..ad62eaf604b3 100644
--- a/rust/helpers.c
+++ b/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(struct work_struct *work, work_func_t func,
}
EXPORT_SYMBOL_GPL(rust_helper_init_work_with_key);
+void * __must_check rust_helper_krealloc(const void *objp, size_t new_size,
+ gfp_t flags) __realloc_size(2)
+{
+ 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.
--
2.44.0.rc0.258.g7320e95886-goog
next parent reply other threads:[~2024-02-21 19:41 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20240221194052.927623-1-surenb@google.com>
2024-02-21 19:40 ` Suren Baghdasaryan [this message]
2024-02-22 9:59 ` [PATCH v4 24/36] rust: Add a rust helper for krealloc() Alice Ryhl
2024-02-23 22:17 ` Suren Baghdasaryan
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