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From: akpm@linux-foundation.org
To: dima@arista.com, gxt@pku.edu.cn, mm-commits@vger.kernel.org
Subject: [merged] unicore32-remove-unused-pmode-argument-in-c_backtrace.patch removed from -mm tree
Date: Tue, 09 Jun 2020 17:38:10 -0700	[thread overview]
Message-ID: <20200610003810.SPB66VSFE%akpm@linux-foundation.org> (raw)


The patch titled
     Subject: unicore32: remove unused pmode argument in c_backtrace()
has been removed from the -mm tree.  Its filename was
     unicore32-remove-unused-pmode-argument-in-c_backtrace.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
From: Dmitry Safonov <dima@arista.com>
Subject: unicore32: remove unused pmode argument in c_backtrace()

The pmode parameter isn't used in assembly - remove it.  Second argument
will be reused for printk() log level.

Link: http://lkml.kernel.org/r/20200418201944.482088-38-dima@arista.com
Signed-off-by: Dmitry Safonov <dima@arista.com>
Cc: Guan Xuetao <gxt@pku.edu.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/unicore32/kernel/setup.h |    2 +-
 arch/unicore32/kernel/traps.c |   14 +++++---------
 2 files changed, 6 insertions(+), 10 deletions(-)

--- a/arch/unicore32/kernel/setup.h~unicore32-remove-unused-pmode-argument-in-c_backtrace
+++ a/arch/unicore32/kernel/setup.h
@@ -29,7 +29,7 @@ extern void kernel_thread_helper(void);
 extern void __init early_signal_init(void);
 
 extern asmlinkage void __backtrace(void);
-extern asmlinkage void c_backtrace(unsigned long fp, int pmode);
+extern asmlinkage void c_backtrace(unsigned long fp);
 
 extern void __show_regs(struct pt_regs *);
 
--- a/arch/unicore32/kernel/traps.c~unicore32-remove-unused-pmode-argument-in-c_backtrace
+++ a/arch/unicore32/kernel/traps.c
@@ -137,7 +137,7 @@ static void dump_instr(const char *lvl,
 
 static void dump_backtrace(struct pt_regs *regs, struct task_struct *tsk)
 {
-	unsigned int fp, mode;
+	unsigned int fp;
 	int ok = 1;
 
 	printk(KERN_DEFAULT "Backtrace: ");
@@ -145,16 +145,12 @@ static void dump_backtrace(struct pt_reg
 	if (!tsk)
 		tsk = current;
 
-	if (regs) {
+	if (regs)
 		fp = regs->UCreg_fp;
-		mode = processor_mode(regs);
-	} else if (tsk != current) {
+	else if (tsk != current)
 		fp = thread_saved_fp(tsk);
-		mode = 0x10;
-	} else {
+	else
 		asm("mov %0, fp" : "=r" (fp) : : "cc");
-		mode = 0x10;
-	}
 
 	if (!fp) {
 		printk("no frame pointer");
@@ -167,7 +163,7 @@ static void dump_backtrace(struct pt_reg
 	printk("\n");
 
 	if (ok)
-		c_backtrace(fp, mode);
+		c_backtrace(fp);
 }
 
 void show_stack(struct task_struct *tsk, unsigned long *sp)
_

Patches currently in -mm which might be from dima@arista.com are

                 reply	other threads:[~2020-06-10  0:38 UTC|newest]

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