Merge tag 'sysctl-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux

Pull sysctl updates from Luis Chamberlain:
 "To help make the move of sysctls out of kernel/sysctl.c not incur a
  size penalty sysctl has been changed to allow us to not require the
  sentinel, the final empty element on the sysctl array. Joel Granados
  has been doing all this work. On the v6.6 kernel we got the major
  infrastructure changes required to support this. For v6.7-rc1 we have
  all arch/ and drivers/ modified to remove the sentinel. Both arch and
  driver changes have been on linux-next for a bit less than a month. It
  is worth re-iterating the value:

   - this helps reduce the overall build time size of the kernel and run
     time memory consumed by the kernel by about ~64 bytes per array

   - the extra 64-byte penalty is no longer inncurred now when we move
     sysctls out from kernel/sysctl.c to their own files

  For v6.8-rc1 expect removal of all the sentinels and also then the
  unneeded check for procname == NULL.

  The last two patches are fixes recently merged by Krister Johansen
  which allow us again to use softlockup_panic early on boot. This used
  to work but the alias work broke it. This is useful for folks who want
  to detect softlockups super early rather than wait and spend money on
  cloud solutions with nothing but an eventual hung kernel. Although
  this hadn't gone through linux-next it's also a stable fix, so we
  might as well roll through the fixes now"

* tag 'sysctl-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/mcgrof/linux: (23 commits)
  watchdog: move softlockup_panic back to early_param
  proc: sysctl: prevent aliased sysctls from getting passed to init
  intel drm: Remove now superfluous sentinel element from ctl_table array
  Drivers: hv: Remove now superfluous sentinel element from ctl_table array
  raid: Remove now superfluous sentinel element from ctl_table array
  fw loader: Remove the now superfluous sentinel element from ctl_table array
  sgi-xp: Remove the now superfluous sentinel element from ctl_table array
  vrf: Remove the now superfluous sentinel element from ctl_table array
  char-misc: Remove the now superfluous sentinel element from ctl_table array
  infiniband: Remove the now superfluous sentinel element from ctl_table array
  macintosh: Remove the now superfluous sentinel element from ctl_table array
  parport: Remove the now superfluous sentinel element from ctl_table array
  scsi: Remove now superfluous sentinel element from ctl_table array
  tty: Remove now superfluous sentinel element from ctl_table array
  xen: Remove now superfluous sentinel element from ctl_table array
  hpet: Remove now superfluous sentinel element from ctl_table array
  c-sky: Remove now superfluous sentinel element from ctl_talbe array
  powerpc: Remove now superfluous sentinel element from ctl_table arrays
  riscv: Remove now superfluous sentinel element from ctl_table array
  x86/vdso: Remove now superfluous sentinel element from ctl_table array
  ...

arch/arm/kernel/isa.c

@@ -16,7 +16,7 @@
 
 static unsigned int isa_membase, isa_portbase, isa_portshift;
 
-static struct ctl_table ctl_isa_vars[4] = {
+static struct ctl_table ctl_isa_vars[] = {
 	{
 		.procname	= "membase",
 		.data		= &isa_membase, 
@@ -35,7 +35,7 @@ static struct ctl_table ctl_isa_vars[4] = {
 		.maxlen		= sizeof(isa_portshift),
 		.mode		= 0444,
 		.proc_handler	= proc_dointvec,
-	}, {}
+	},
 };
 
 static struct ctl_table_header *isa_sysctl_header;

arch/arm64/kernel/armv8_deprecated.c

@@ -52,10 +52,8 @@ struct insn_emulation {
 	int min;
 	int max;
 
-	/*
-	 * sysctl for this emulation + a sentinal entry.
-	 */
-	struct ctl_table sysctl[2];
+	/* sysctl for this emulation */
+	struct ctl_table sysctl;
 };
 
 #define ARM_OPCODE_CONDTEST_FAIL   0
@@ -558,7 +556,7 @@ static void __init register_insn_emulation(struct insn_emulation *insn)
 	update_insn_emulation_mode(insn, INSN_UNDEF);
 
 	if (insn->status != INSN_UNAVAILABLE) {
-		sysctl = &insn->sysctl[0];
+		sysctl = &insn->sysctl;
 
 		sysctl->mode = 0644;
 		sysctl->maxlen = sizeof(int);

arch/arm64/kernel/fpsimd.c

@@ -589,7 +589,6 @@ static struct ctl_table sve_default_vl_table[] = {
 		.proc_handler	= vec_proc_do_default_vl,
 		.extra1		= &vl_info[ARM64_VEC_SVE],
 	},
-	{ }
 };
 
 static int __init sve_sysctl_init(void)
@@ -613,7 +612,6 @@ static struct ctl_table sme_default_vl_table[] = {
 		.proc_handler	= vec_proc_do_default_vl,
 		.extra1		= &vl_info[ARM64_VEC_SME],
 	},
-	{ }
 };
 
 static int __init sme_sysctl_init(void)

arch/arm64/kernel/process.c

@@ -724,7 +724,6 @@ static struct ctl_table tagged_addr_sysctl_table[] = {
 		.extra1		= SYSCTL_ZERO,
 		.extra2		= SYSCTL_ONE,
 	},
-	{ }
 };
 
 static int __init tagged_addr_init(void)

arch/csky/abiv1/alignment.c

@@ -329,7 +329,6 @@ static struct ctl_table alignment_tbl[5] = {
 		.mode = 0666,
 		.proc_handler = &proc_dointvec
 	},
-	{}
 };
 
 static int __init csky_alignment_init(void)

arch/powerpc/kernel/idle.c

@@ -105,7 +105,6 @@ static struct ctl_table powersave_nap_ctl_table[] = {
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec,
 	},
-	{}
 };
 
 static int __init

arch/powerpc/platforms/pseries/mobility.c

@@ -61,7 +61,6 @@ static struct ctl_table nmi_wd_lpm_factor_ctl_table[] = {
 		.mode		= 0644,
 		.proc_handler	= proc_douintvec_minmax,
 	},
-	{}
 };
 
 static int __init register_nmi_wd_lpm_factor_sysctl(void)

arch/riscv/kernel/vector.c

@@ -255,7 +255,6 @@ static struct ctl_table riscv_v_default_vstate_table[] = {
 		.mode		= 0644,
 		.proc_handler	= proc_dobool,
 	},
-	{ }
 };
 
 static int __init riscv_v_sysctl_init(void)

arch/s390/appldata/appldata_base.c

@@ -63,7 +63,6 @@ static struct ctl_table appldata_table[] = {
 		.mode		= S_IRUGO | S_IWUSR,
 		.proc_handler	= appldata_interval_handler,
 	},
-	{ },
 };
 
 /*
@@ -351,8 +350,7 @@ int appldata_register_ops(struct appldata_ops *ops)
 	if (ops->size > APPLDATA_MAX_REC_SIZE)
 		return -EINVAL;
 
-	/* The last entry must be an empty one */
-	ops->ctl_table = kcalloc(2, sizeof(struct ctl_table), GFP_KERNEL);
+	ops->ctl_table = kcalloc(1, sizeof(struct ctl_table), GFP_KERNEL);
 	if (!ops->ctl_table)
 		return -ENOMEM;
 

arch/s390/kernel/debug.c

@@ -978,7 +978,6 @@ static struct ctl_table s390dbf_table[] = {
 		.mode		= S_IRUGO | S_IWUSR,
 		.proc_handler	= s390dbf_procactive,
 	},
-	{ }
 };
 
 static struct ctl_table_header *s390dbf_sysctl_header;

arch/s390/kernel/topology.c

@@ -636,7 +636,6 @@ static struct ctl_table topology_ctl_table[] = {
 		.mode		= 0644,
 		.proc_handler	= topology_ctl_handler,
 	},
-	{ },
 };
 
 static int __init topology_init(void)

arch/s390/mm/cmm.c

@@ -332,7 +332,6 @@ static struct ctl_table cmm_table[] = {
 		.mode		= 0644,
 		.proc_handler	= cmm_timeout_handler,
 	},
-	{ }
 };
 
 #ifdef CONFIG_CMM_IUCV

arch/s390/mm/pgalloc.c

@@ -30,7 +30,6 @@ static struct ctl_table page_table_sysctl[] = {
 		.extra1		= SYSCTL_ZERO,
 		.extra2		= SYSCTL_ONE,
 	},
-	{ }
 };
 
 static int __init page_table_register_sysctl(void)

arch/x86/entry/vdso/vdso32-setup.c

@@ -67,7 +67,6 @@ static struct ctl_table abi_table2[] = {
 		.extra1		= SYSCTL_ZERO,
 		.extra2		= SYSCTL_ONE,
 	},
-	{}
 };
 
 static __init int ia32_binfmt_init(void)

arch/x86/kernel/cpu/intel.c

@@ -1003,7 +1003,6 @@ static struct ctl_table sld_sysctls[] = {
 		.extra1         = SYSCTL_ZERO,
 		.extra2         = SYSCTL_ONE,
 	},
-	{}
 };
 
 static int __init sld_mitigate_sysctl_init(void)

arch/x86/kernel/itmt.c

@@ -74,7 +74,6 @@ static struct ctl_table itmt_kern_table[] = {
 		.extra1		= SYSCTL_ZERO,
 		.extra2		= SYSCTL_ONE,
 	},
-	{}
 };
 
 static struct ctl_table_header *itmt_sysctl_header;

drivers/base/firmware_loader/fallback_table.c

@@ -44,7 +44,6 @@ static struct ctl_table firmware_config_table[] = {
 		.extra1		= SYSCTL_ZERO,
 		.extra2		= SYSCTL_ONE,
 	},
-	{ }
 };
 
 static struct ctl_table_header *firmware_config_sysct_table_header;

drivers/char/hpet.c

@@ -709,7 +709,6 @@ static struct ctl_table hpet_table[] = {
 	 .mode = 0644,
 	 .proc_handler = proc_dointvec,
 	 },
-	{}
 };
 
 static struct ctl_table_header *sysctl_header;

drivers/char/ipmi/ipmi_poweroff.c

@@ -656,7 +656,6 @@ static struct ctl_table ipmi_table[] = {
 	  .maxlen	= sizeof(poweroff_powercycle),
 	  .mode		= 0644,
 	  .proc_handler	= proc_dointvec },
-	{ }
 };
 
 static struct ctl_table_header *ipmi_table_header;

drivers/char/random.c

@@ -1683,7 +1683,6 @@ static struct ctl_table random_table[] = {
 		.mode		= 0444,
 		.proc_handler	= proc_do_uuid,
 	},
-	{ }
 };
 
 /*