[PATCH v2 27/39] xfs: Memory allocation profiling fixups

Suren Baghdasaryan
2023-10-24T13:48:11Z

From: Kent Overstreet <kent.overstreet@linux.dev>

This adds an alloc_hooks() wrapper around kmem_alloc(), so that we can
have allocations accounted to the proper callsite.

Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
---
fs/xfs/kmem.c | 4 ++--
fs/xfs/kmem.h | 10 ++++------
2 files changed, 6 insertions(+), 8 deletions(-)

diff --git a/fs/xfs/kmem.c b/fs/xfs/kmem.c
index c557a030acfe..9aa57a4e2478 100644
--- a/fs/xfs/kmem.c
+++ b/fs/xfs/kmem.c
@@ -8,7 +8,7 @@
#include "xfs_trace.h"

void *
-kmem_alloc(size_t size, xfs_km_flags_t flags)
+kmem_alloc_noprof(size_t size, xfs_km_flags_t flags)
{
int retries = 0;
gfp_t lflags = kmem_flags_convert(flags);
@@ -17,7 +17,7 @@ kmem_alloc(size_t size, xfs_km_flags_t flags)
trace_kmem_alloc(size, flags, _RET_IP_);

do {
- ptr = kmalloc(size, lflags);
+ ptr = kmalloc_noprof(size, lflags);
if (ptr || (flags & KM_MAYFAIL))
return ptr;
if (!(++retries % 100))
diff --git a/fs/xfs/kmem.h b/fs/xfs/kmem.h
index b987dc2c6851..c4cf1dc2a7af 100644
--- a/fs/xfs/kmem.h
+++ b/fs/xfs/kmem.h
@@ -6,6 +6,7 @@
#ifndef __XFS_SUPPORT_KMEM_H__
#define __XFS_SUPPORT_KMEM_H__

+#include <linux/alloc_tag.h>
#include <linux/slab.h>
#include <linux/sched.h>
#include <linux/mm.h>
@@ -56,18 +57,15 @@ kmem_flags_convert(xfs_km_flags_t flags)
return lflags;
}

-extern void *kmem_alloc(size_t, xfs_km_flags_t);
static inline void kmem_free(const void *ptr)
{
kvfree(ptr);
}

+extern void *kmem_alloc_noprof(size_t, xfs_km_flags_t);
+#define kmem_alloc(...) alloc_hooks(kmem_alloc_noprof(__VA_ARGS__))

-static inline void *
-kmem_zalloc(size_t size, xfs_km_flags_t flags)
-{
- return kmem_alloc(size, flags | KM_ZERO);
-}
+#define kmem_zalloc(_size, _flags) kmem_alloc((_size), (_flags) | KM_ZERO)

/*
* Zone interfaces
--
2.42.0.758.gaed0368e0e-goog