+ mm-khugepaged-refactor-mm_khugepaged_scan_file-tracepoint-to-remove-filename-from-function-call.patch added to mm-unstable branch

+ mm-khugepaged-refactor-mm_khugepaged_scan_file-tracepoint-to-remove-filename-from-function-call.patch added to mm-unstable branch

[Andrew Morton]

The patch titled
     Subject: mm/khugepaged: refactor mm_khugepaged_scan_file tracepoint to remove filename from function call
has been added to the -mm mm-unstable branch.  Its filename is
     mm-khugepaged-refactor-mm_khugepaged_scan_file-tracepoint-to-remove-filename-from-function-call.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/mm-khugepaged-refactor-mm_khugepaged_scan_file-tracepoint-to-remove-filename-from-function-call.patch

This patch will later appear in the mm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

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------------------------------------------------------
From: Gautam Menghani <gautammenghani201@gmail.com>
Subject: mm/khugepaged: refactor mm_khugepaged_scan_file tracepoint to remove filename from function call
Date: Wed, 26 Oct 2022 10:15:24 +0530

Refactor the mm_khugepaged_scan_file tracepoint to move filename
dereference to the tracepoint definition, for maintaing consistency with
other tracepoints[1].

[1]:lore.kernel.org/lkml/20221024111621.3ba17e2c@gandalf.local.home/

Link: https://lkml.kernel.org/r/20221026044524.54793-1-gautammenghani201@gmail.com
Signed-off-by: Gautam Menghani <gautammenghani201@gmail.com>
Reviewed-by: Yang Shi <shy828301@gmail.com>
Reviewed-by: Zach O'Keefe <zokeefe@google.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---


--- a/include/trace/events/huge_memory.h~mm-khugepaged-refactor-mm_khugepaged_scan_file-tracepoint-to-remove-filename-from-function-call
+++ a/include/trace/events/huge_memory.h
@@ -171,15 +171,15 @@ TRACE_EVENT(mm_collapse_huge_page_swapin
 
 TRACE_EVENT(mm_khugepaged_scan_file,
 
-	TP_PROTO(struct mm_struct *mm, struct page *page, const char *filename,
+	TP_PROTO(struct mm_struct *mm, struct page *page, struct file *file,
 		 int present, int swap, int result),
 
-	TP_ARGS(mm, page, filename, present, swap, result),
+	TP_ARGS(mm, page, file, present, swap, result),
 
 	TP_STRUCT__entry(
 		__field(struct mm_struct *, mm)
 		__field(unsigned long, pfn)
-		__string(filename, filename)
+		__string(filename, file->f_path.dentry->d_iname)
 		__field(int, present)
 		__field(int, swap)
 		__field(int, result)
@@ -188,7 +188,7 @@ TRACE_EVENT(mm_khugepaged_scan_file,
 	TP_fast_assign(
 		__entry->mm = mm;
 		__entry->pfn = page ? page_to_pfn(page) : -1;
-		__assign_str(filename, filename);
+		__assign_str(filename, file->f_path.dentry->d_iname);
 		__entry->present = present;
 		__entry->swap = swap;
 		__entry->result = result;
--- a/mm/khugepaged.c~mm-khugepaged-refactor-mm_khugepaged_scan_file-tracepoint-to-remove-filename-from-function-call
+++ a/mm/khugepaged.c
@@ -2158,8 +2158,7 @@ static int hpage_collapse_scan_file(stru
 		}
 	}
 
-	trace_mm_khugepaged_scan_file(mm, page, file->f_path.dentry->d_iname,
-				      present, swap, result);
+	trace_mm_khugepaged_scan_file(mm, page, file, present, swap, result);
 	return result;
 }
 #else
_

Patches currently in -mm which might be from gautammenghani201@gmail.com are

mm-khugepaged-add-tracepoint-to-collapse_file.patch
mm-khugepaged-refactor-mm_khugepaged_scan_file-tracepoint-to-remove-filename-from-function-call.patch