The quilt patch titled
Subject: mm: vmalloc: add alloc_vmap_area trace event
has been removed from the -mm tree. Its filename was
mm-vmalloc-add-alloc_vmap_area-trace-event.patch
This patch was dropped because it was merged into the mm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
------------------------------------------------------
From: "Uladzislau Rezki (Sony)" <urezki@xxxxxxxxx>
Subject: mm: vmalloc: add alloc_vmap_area trace event
Date: Tue, 18 Oct 2022 20:10:47 +0200
Patch series "Add basic trace events for vmap/vmalloc (v2)", v2.
This small series add some basic trace events for the vmap/vmalloc code.
Since currently we lack any, sometimes it is hard to start debuging vmap
code if an issue is reported or occured.
For example https://lore.kernel.org/linux-mm/Y0p8BZIiDXLQbde%2F@pc636/T/
The final patch adds two reviewers for vmalloc code.
This patch (of 7):
It is for debug purposes and for validation of passed parameters.
Link: https://lkml.kernel.org/r/20221018181053.434508-1-urezki@xxxxxxxxx
Link: https://lkml.kernel.org/r/20221018181053.434508-2-urezki@xxxxxxxxx
Signed-off-by: Uladzislau Rezki (Sony) <urezki@xxxxxxxxx>
Reviewed-by: Steven Rostedt (Google) <rostedt@xxxxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Cc: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Nicholas Piggin <npiggin@xxxxxxxxx>
Cc: Oleksiy Avramchenko <oleksiy.avramchenko@xxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
include/trace/events/vmalloc.h | 56 +++++++++++++++++++++++++++++++
1 file changed, 56 insertions(+)
--- /dev/null
+++ a/include/trace/events/vmalloc.h
@@ -0,0 +1,56 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#undef TRACE_SYSTEM
+#define TRACE_SYSTEM vmalloc
+
+#if !defined(_TRACE_VMALLOC_H) || defined(TRACE_HEADER_MULTI_READ)
+#define _TRACE_VMALLOC_H
+
+#include <linux/tracepoint.h>
+
+/**
+ * alloc_vmap_area - called when a new vmap allocation occurs
+ * @addr: an allocated address
+ * @size: a requested size
+ * @align: a requested alignment
+ * @vstart: a requested start range
+ * @vend: a requested end range
+ * @failed: an allocation failed or not
+ *
+ * This event is used for a debug purpose, it can give an extra
+ * information for a developer about how often it occurs and which
+ * parameters are passed for further validation.
+ */
+TRACE_EVENT(alloc_vmap_area,
+
+ TP_PROTO(unsigned long addr, unsigned long size, unsigned long align,
+ unsigned long vstart, unsigned long vend, int failed),
+
+ TP_ARGS(addr, size, align, vstart, vend, failed),
+
+ TP_STRUCT__entry(
+ __field(unsigned long, addr)
+ __field(unsigned long, size)
+ __field(unsigned long, align)
+ __field(unsigned long, vstart)
+ __field(unsigned long, vend)
+ __field(int, failed)
+ ),
+
+ TP_fast_assign(
+ __entry->addr = addr;
+ __entry->size = size;
+ __entry->align = align;
+ __entry->vstart = vstart;
+ __entry->vend = vend;
+ __entry->failed = failed;
+ ),
+
+ TP_printk("va_start: %lu size=%lu align=%lu vstart=0x%lx vend=0x%lx failed=%d",
+ __entry->addr, __entry->size, __entry->align,
+ __entry->vstart, __entry->vend, __entry->failed)
+);
+
+#endif /* _TRACE_VMALLOC_H */
+
+/* This part must be outside protection */
+#include <trace/define_trace.h>
_
Patches currently in -mm which might be from urezki@xxxxxxxxx are
