Merge tag 'mm-nonmm-stable-2023-04-27-16-01' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-MM updates from Andrew Morton:
 "Mainly singleton patches all over the place.

  Series of note are:

   - updates to scripts/gdb from Glenn Washburn

   - kexec cleanups from Bjorn Helgaas"

* tag 'mm-nonmm-stable-2023-04-27-16-01' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (50 commits)
  mailmap: add entries for Paul Mackerras
  libgcc: add forward declarations for generic library routines
  mailmap: add entry for Oleksandr
  ocfs2: reduce ioctl stack usage
  fs/proc: add Kthread flag to /proc/$pid/status
  ia64: fix an addr to taddr in huge_pte_offset()
  checkpatch: introduce proper bindings license check
  epoll: rename global epmutex
  scripts/gdb: add GDB convenience functions $lx_dentry_name() and $lx_i_dentry()
  scripts/gdb: create linux/vfs.py for VFS related GDB helpers
  uapi/linux/const.h: prefer ISO-friendly __typeof__
  delayacct: track delays from IRQ/SOFTIRQ
  scripts/gdb: timerlist: convert int chunks to str
  scripts/gdb: print interrupts
  scripts/gdb: raise error with reduced debugging information
  scripts/gdb: add a Radix Tree Parser
  lib/rbtree: use '+' instead of '|' for setting color.
  proc/stat: remove arch_idle_time()
  checkpatch: check for misuse of the link tags
  checkpatch: allow Closes tags with links
  ...

6 files changed, 13 insertions, 40 deletions

diff --git a/fs/proc/array.c b/fs/proc/array.c
index 9b0315d34c58..425824ad85e1 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -219,6 +219,8 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
 		seq_put_decimal_ull(m, "\t", task_session_nr_ns(p, pid->numbers[g].ns));
 #endif
 	seq_putc(m, '\n');
+
+	seq_printf(m, "Kthread:\t%c\n", p->flags & PF_KTHREAD ? '1' : '0');
 }
 
 void render_sigset_t(struct seq_file *m, const char *header,
diff --git a/fs/proc/base.c b/fs/proc/base.c
index 96a6a08c8235..05452c3b9872 100644
--- a/fs/proc/base.c
+++ b/fs/proc/base.c
@@ -700,7 +700,6 @@ int proc_setattr(struct mnt_idmap *idmap, struct dentry *dentry,
 		return error;
 
 	setattr_copy(&nop_mnt_idmap, inode, attr);
-	mark_inode_dirty(inode);
 	return 0;
 }
 
diff --git a/fs/proc/generic.c b/fs/proc/generic.c
index 8379593fa4bb..42ae38ff6e7e 100644
--- a/fs/proc/generic.c
+++ b/fs/proc/generic.c
@@ -127,7 +127,6 @@ static int proc_notify_change(struct mnt_idmap *idmap,
 		return error;
 
 	setattr_copy(&nop_mnt_idmap, inode, iattr);
-	mark_inode_dirty(inode);
 
 	proc_set_user(de, inode->i_uid, inode->i_gid);
 	de->mode = inode->i_mode;
diff --git a/fs/proc/proc_sysctl.c b/fs/proc/proc_sysctl.c
index 7ad07435828f..81dbb175017e 100644
--- a/fs/proc/proc_sysctl.c
+++ b/fs/proc/proc_sysctl.c
@@ -841,7 +841,6 @@ static int proc_sys_setattr(struct mnt_idmap *idmap,
 		return error;
 
 	setattr_copy(&nop_mnt_idmap, inode, attr);
-	mark_inode_dirty(inode);
 	return 0;
 }
 
diff --git a/fs/proc/stat.c b/fs/proc/stat.c
index 4fb8729a68d4..da60956b2915 100644
--- a/fs/proc/stat.c
+++ b/fs/proc/stat.c
@@ -22,30 +22,6 @@
 #define arch_irq_stat() 0
 #endif
 
-#ifdef arch_idle_time
-
-u64 get_idle_time(struct kernel_cpustat *kcs, int cpu)
-{
-	u64 idle;
-
-	idle = kcs->cpustat[CPUTIME_IDLE];
-	if (cpu_online(cpu) && !nr_iowait_cpu(cpu))
-		idle += arch_idle_time(cpu);
-	return idle;
-}
-
-static u64 get_iowait_time(struct kernel_cpustat *kcs, int cpu)
-{
-	u64 iowait;
-
-	iowait = kcs->cpustat[CPUTIME_IOWAIT];
-	if (cpu_online(cpu) && nr_iowait_cpu(cpu))
-		iowait += arch_idle_time(cpu);
-	return iowait;
-}
-
-#else
-
 u64 get_idle_time(struct kernel_cpustat *kcs, int cpu)
 {
 	u64 idle, idle_usecs = -1ULL;
@@ -78,8 +54,6 @@ static u64 get_iowait_time(struct kernel_cpustat *kcs, int cpu)
 	return iowait;
 }
 
-#endif
-
 static void show_irq_gap(struct seq_file *p, unsigned int gap)
 {
 	static const char zeros[] = " 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0";
diff --git a/fs/proc/vmcore.c b/fs/proc/vmcore.c
index 12af614f33ce..03f5963914a1 100644
--- a/fs/proc/vmcore.c
+++ b/fs/proc/vmcore.c
@@ -339,7 +339,7 @@ static ssize_t __read_vmcore(struct iov_iter *iter, loff_t *fpos)
 			return acc;
 	}
 
-	/* Read Elf note segment */
+	/* Read ELF note segment */
 	if (*fpos < elfcorebuf_sz + elfnotes_sz) {
 		void *kaddr;
 
@@ -1109,7 +1109,7 @@ static int __init process_ptload_program_headers_elf64(char *elfptr,
 	ehdr_ptr = (Elf64_Ehdr *)elfptr;
 	phdr_ptr = (Elf64_Phdr*)(elfptr + sizeof(Elf64_Ehdr)); /* PT_NOTE hdr */
 
-	/* Skip Elf header, program headers and Elf note segment. */
+	/* Skip ELF header, program headers and ELF note segment. */
 	vmcore_off = elfsz + elfnotes_sz;
 
 	for (i = 0; i < ehdr_ptr->e_phnum; i++, phdr_ptr++) {
@@ -1152,7 +1152,7 @@ static int __init process_ptload_program_headers_elf32(char *elfptr,
 	ehdr_ptr = (Elf32_Ehdr *)elfptr;
 	phdr_ptr = (Elf32_Phdr*)(elfptr + sizeof(Elf32_Ehdr)); /* PT_NOTE hdr */
 
-	/* Skip Elf header, program headers and Elf note segment. */
+	/* Skip ELF header, program headers and ELF note segment. */
 	vmcore_off = elfsz + elfnotes_sz;
 
 	for (i = 0; i < ehdr_ptr->e_phnum; i++, phdr_ptr++) {
@@ -1188,7 +1188,7 @@ static void set_vmcore_list_offsets(size_t elfsz, size_t elfnotes_sz,
 	loff_t vmcore_off;
 	struct vmcore *m;
 
-	/* Skip Elf header, program headers and Elf note segment. */
+	/* Skip ELF header, program headers and ELF note segment. */
 	vmcore_off = elfsz + elfnotes_sz;
 
 	list_for_each_entry(m, vc_list, list) {
@@ -1213,7 +1213,7 @@ static int __init parse_crash_elf64_headers(void)
 
 	addr = elfcorehdr_addr;
 
-	/* Read Elf header */
+	/* Read ELF header */
 	rc = elfcorehdr_read((char *)&ehdr, sizeof(Elf64_Ehdr), &addr);
 	if (rc < 0)
 		return rc;
@@ -1269,7 +1269,7 @@ static int __init parse_crash_elf32_headers(void)
 
 	addr = elfcorehdr_addr;
 
-	/* Read Elf header */
+	/* Read ELF header */
 	rc = elfcorehdr_read((char *)&ehdr, sizeof(Elf32_Ehdr), &addr);
 	if (rc < 0)
 		return rc;
@@ -1376,12 +1376,12 @@ static void vmcoredd_write_header(void *buf, struct vmcoredd_data *data,
 }
 
 /**
- * vmcoredd_update_program_headers - Update all Elf program headers
+ * vmcoredd_update_program_headers - Update all ELF program headers
  * @elfptr: Pointer to elf header
  * @elfnotesz: Size of elf notes aligned to page size
  * @vmcoreddsz: Size of device dumps to be added to elf note header
  *
- * Determine type of Elf header (Elf64 or Elf32) and update the elf note size.
+ * Determine type of ELF header (Elf64 or Elf32) and update the elf note size.
  * Also update the offsets of all the program headers after the elf note header.
  */
 static void vmcoredd_update_program_headers(char *elfptr, size_t elfnotesz,
@@ -1439,10 +1439,10 @@ static void vmcoredd_update_program_headers(char *elfptr, size_t elfnotesz,
 
 /**
  * vmcoredd_update_size - Update the total size of the device dumps and update
- * Elf header
+ * ELF header
  * @dump_size: Size of the current device dump to be added to total size
  *
- * Update the total size of all the device dumps and update the Elf program
+ * Update the total size of all the device dumps and update the ELF program
  * headers. Calculate the new offsets for the vmcore list and update the
  * total vmcore size.
  */
@@ -1466,7 +1466,7 @@ static void vmcoredd_update_size(size_t dump_size)
  * @data: dump info.
  *
  * Allocate a buffer and invoke the calling driver's dump collect routine.
- * Write Elf note at the beginning of the buffer to indicate vmcore device
+ * Write ELF note at the beginning of the buffer to indicate vmcore device
  * dump and add the dump to global list.
  */
 int vmcore_add_device_dump(struct vmcoredd_data *data)