85 lines
2.7 KiB
Diff
85 lines
2.7 KiB
Diff
|
From 8b42012dc4aa0008ad10cf7575f684ebc3a587cf Mon Sep 17 00:00:00 2001
|
||
|
|
From: Alexandre Frade <kernel@xanmod.org>
|
||
|
|
Date: Wed, 15 Jun 2022 17:07:29 +0000
|
||
|
|
Subject: [PATCH 15/19] XANMOD: sched/autogroup: Add kernel parameter and
|
||
|
|
config option to enable/disable autogroup feature by default
|
||
|
|
|
||
|
|
Signed-off-by: Alexandre Frade <kernel@xanmod.org>
|
||
|
|
---
|
||
|
|
Documentation/admin-guide/kernel-parameters.txt | 6 ++++--
|
||
|
|
init/Kconfig | 12 ++++++++++++
|
||
|
|
kernel/sched/autogroup.c | 9 ++++++---
|
||
|
|
3 files changed, 22 insertions(+), 5 deletions(-)
|
||
|
|
|
||
|
|
--- a/Documentation/admin-guide/kernel-parameters.txt
|
||
|
|
+++ b/Documentation/admin-guide/kernel-parameters.txt
|
||
|
|
@@ -493,6 +493,10 @@
|
||
|
|
Format: <int> (must be >=0)
|
||
|
|
Default: 64
|
||
|
|
|
||
|
|
+ autogroup= [KNL] Enable or disable scheduler automatic task group
|
||
|
|
+ creation.
|
||
|
|
+ Format: <bool>
|
||
|
|
+
|
||
|
|
bau= [X86_UV] Enable the BAU on SGI UV. The default
|
||
|
|
behavior is to disable the BAU (i.e. bau=0).
|
||
|
|
Format: { "0" | "1" }
|
||
|
|
@@ -3835,8 +3839,6 @@
|
||
|
|
noapic [SMP,APIC,EARLY] Tells the kernel to not make use of any
|
||
|
|
IOAPICs that may be present in the system.
|
||
|
|
|
||
|
|
- noautogroup Disable scheduler automatic task group creation.
|
||
|
|
-
|
||
|
|
nocache [ARM,EARLY]
|
||
|
|
|
||
|
|
no_console_suspend
|
||
|
|
--- a/init/Kconfig
|
||
|
|
+++ b/init/Kconfig
|
||
|
|
@@ -1309,6 +1309,18 @@ config SCHED_AUTOGROUP
|
||
|
|
desktop applications. Task group autogeneration is currently based
|
||
|
|
upon task session.
|
||
|
|
|
||
|
|
+config SCHED_AUTOGROUP_DEFAULT_ENABLED
|
||
|
|
+ bool "Enable automatic process group scheduling feature"
|
||
|
|
+ default y
|
||
|
|
+ depends on SCHED_AUTOGROUP
|
||
|
|
+ help
|
||
|
|
+ If set, automatic process group scheduling will be enabled per
|
||
|
|
+ default but can be disabled through passing autogroup=0 on the
|
||
|
|
+ kernel commandline during boot or a value of 0 via the file
|
||
|
|
+ proc/sys/kernel/sched_autogroup_enabled.
|
||
|
|
+
|
||
|
|
+ If unsure say Y.
|
||
|
|
+
|
||
|
|
config RELAY
|
||
|
|
bool "Kernel->user space relay support (formerly relayfs)"
|
||
|
|
select IRQ_WORK
|
||
|
|
--- a/kernel/sched/autogroup.c
|
||
|
|
+++ b/kernel/sched/autogroup.c
|
||
|
|
@@ -4,7 +4,8 @@
|
||
|
|
* Auto-group scheduling implementation:
|
||
|
|
*/
|
||
|
|
|
||
|
|
-unsigned int __read_mostly sysctl_sched_autogroup_enabled = 1;
|
||
|
|
+unsigned int __read_mostly sysctl_sched_autogroup_enabled =
|
||
|
|
+ IS_ENABLED(CONFIG_SCHED_AUTOGROUP_DEFAULT_ENABLED) ? 1 : 0;
|
||
|
|
static struct autogroup autogroup_default;
|
||
|
|
static atomic_t autogroup_seq_nr;
|
||
|
|
|
||
|
|
@@ -219,11 +220,13 @@ void sched_autogroup_exit(struct signal_
|
||
|
|
|
||
|
|
static int __init setup_autogroup(char *str)
|
||
|
|
{
|
||
|
|
- sysctl_sched_autogroup_enabled = 0;
|
||
|
|
+ unsigned long enabled;
|
||
|
|
+ if (!kstrtoul(str, 0, &enabled))
|
||
|
|
+ sysctl_sched_autogroup_enabled = enabled ? 1 : 0;
|
||
|
|
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
-__setup("noautogroup", setup_autogroup);
|
||
|
|
+__setup("autogroup=", setup_autogroup);
|
||
|
|
|
||
|
|
#ifdef CONFIG_PROC_FS
|
||
|
|
|