+ arc-use-generic-dump_stack_print_cmdline-implementation.patch added to mm-nonmm-unstable branch

+ arc-use-generic-dump_stack_print_cmdline-implementation.patch added to mm-nonmm-unstable branch

[Andrew Morton]

The patch titled
     Subject: arc: use generic dump_stack_print_cmdline() implementation
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     arc-use-generic-dump_stack_print_cmdline-implementation.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/arc-use-generic-dump_stack_print_cmdline-implementation.patch

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

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------------------------------------------------------
From: Helge Deller <deller@gmx.de>
Subject: arc: use generic dump_stack_print_cmdline() implementation
Date: Mon, 8 Aug 2022 15:09:17 +0200

The process program name and command line is now shown in generic code
in dump_stack_print_info(), so drop the arc-specific implementation.

Link: https://lkml.kernel.org/r/20220808130917.30760-5-deller@gmx.de
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Josh Triplett <josh@joshtriplett.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/arc/kernel/troubleshoot.c |   24 ------------------------
 1 file changed, 24 deletions(-)

--- a/arch/arc/kernel/troubleshoot.c~arc-use-generic-dump_stack_print_cmdline-implementation
+++ a/arch/arc/kernel/troubleshoot.c
@@ -51,29 +51,6 @@ static void print_regs_callee(struct cal
 		regs->r24, regs->r25);
 }
 
-static void print_task_path_n_nm(struct task_struct *tsk)
-{
-	char *path_nm = NULL;
-	struct mm_struct *mm;
-	struct file *exe_file;
-	char buf[ARC_PATH_MAX];
-
-	mm = get_task_mm(tsk);
-	if (!mm)
-		goto done;
-
-	exe_file = get_mm_exe_file(mm);
-	mmput(mm);
-
-	if (exe_file) {
-		path_nm = file_path(exe_file, buf, ARC_PATH_MAX-1);
-		fput(exe_file);
-	}
-
-done:
-	pr_info("Path: %s\n", !IS_ERR(path_nm) ? path_nm : "?");
-}
-
 static void show_faulting_vma(unsigned long address)
 {
 	struct vm_area_struct *vma;
@@ -176,7 +153,6 @@ void show_regs(struct pt_regs *regs)
 	 */
 	preempt_enable();
 
-	print_task_path_n_nm(tsk);
 	show_regs_print_info(KERN_INFO);
 
 	show_ecr_verbose(regs);
_

Patches currently in -mm which might be from deller@gmx.de are

proc-add-get_task_cmdline_kernel-function.patch
lib-dump_stack-add-dump_stack_print_cmdline-and-wire-up-in-dump_stack_print_info.patch
x86-fault-dump-command-line-of-faulting-process-to-syslog.patch
arc-use-generic-dump_stack_print_cmdline-implementation.patch