linux-kernel - [PATCH] profiling: Remove create_prof_cpu

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Message-ID: <88573ed5-5b9b-4488-9b4c-71ca6ad95101@I-love.SAKURA.ne.jp>
Date: Sun, 31 Dec 2023 20:24:34 +0900
From: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
To: Sebastian Ott <sebott@...hat.com>,
        Martin Schwidefsky <schwidefsky@...ibm.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH] profiling: Remove create_prof_cpu_mask().

create_prof_cpu_mask() is no longer used after commit 1f44a225777e ("s390:
convert interrupt handling to use generic hardirq").

Signed-off-by: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>
---
 include/linux/profile.h |  5 -----
 kernel/profile.c        | 43 -----------------------------------------
 2 files changed, 48 deletions(-)

diff --git a/include/linux/profile.h b/include/linux/profile.h
index 11db1ec516e2..04ae5ebcb637 100644
--- a/include/linux/profile.h
+++ b/include/linux/profile.h
@@ -18,13 +18,8 @@ struct proc_dir_entry;
 struct notifier_block;
 
 #if defined(CONFIG_PROFILING) && defined(CONFIG_PROC_FS)
-void create_prof_cpu_mask(void);
 int create_proc_profile(void);
 #else
-static inline void create_prof_cpu_mask(void)
-{
-}
-
 static inline int create_proc_profile(void)
 {
 	return 0;
diff --git a/kernel/profile.c b/kernel/profile.c
index 8a77769bc4b4..2b775cc5c28f 100644
--- a/kernel/profile.c
+++ b/kernel/profile.c
@@ -344,49 +344,6 @@ void profile_tick(int type)
 #include <linux/seq_file.h>
 #include <linux/uaccess.h>
 
-static int prof_cpu_mask_proc_show(struct seq_file *m, void *v)
-{
-	seq_printf(m, "%*pb\n", cpumask_pr_args(prof_cpu_mask));
-	return 0;
-}
-
-static int prof_cpu_mask_proc_open(struct inode *inode, struct file *file)
-{
-	return single_open(file, prof_cpu_mask_proc_show, NULL);
-}
-
-static ssize_t prof_cpu_mask_proc_write(struct file *file,
-	const char __user *buffer, size_t count, loff_t *pos)
-{
-	cpumask_var_t new_value;
-	int err;
-
-	if (!zalloc_cpumask_var(&new_value, GFP_KERNEL))
-		return -ENOMEM;
-
-	err = cpumask_parse_user(buffer, count, new_value);
-	if (!err) {
-		cpumask_copy(prof_cpu_mask, new_value);
-		err = count;
-	}
-	free_cpumask_var(new_value);
-	return err;
-}
-
-static const struct proc_ops prof_cpu_mask_proc_ops = {
-	.proc_open	= prof_cpu_mask_proc_open,
-	.proc_read	= seq_read,
-	.proc_lseek	= seq_lseek,
-	.proc_release	= single_release,
-	.proc_write	= prof_cpu_mask_proc_write,
-};
-
-void create_prof_cpu_mask(void)
-{
-	/* create /proc/irq/prof_cpu_mask */
-	proc_create("irq/prof_cpu_mask", 0600, NULL, &prof_cpu_mask_proc_ops);
-}
-
 /*
  * This function accesses profiling information. The returned data is
  * binary: the sampling step and the actual contents of the profile
-- 
2.18.4