diff mbox series

[J] UBUNTU: [Config] realtime: tweak config for realtime tasks

Message ID 20220222081659.15019-1-krzysztof.kozlowski@canonical.com
State New
Headers show
Series [J] UBUNTU: [Config] realtime: tweak config for realtime tasks | expand

Commit Message

Krzysztof Kozlowski Feb. 22, 2022, 8:16 a.m. UTC 
BugLink: https://bugs.launchpad.net/bugs/1961588

Change kernel config to fit Realtime use cases:

1. CONFIG_WQ_POWER_EFFICIENT_DEFAULT disable: energy saving is not that
   important for Realtime workload but locality of any workqueues (thus
   waking up only local CPU).

2. CONFIG_TIMERLAT_TRACER and CONFIG_OSNOISE_TRACER enable: for
   debugging latency issues.

3. CONFIG_BLK_CGROUP_IOLATENCY enable: for users wanting to have
   guarantees on IO latencies.

4. CONFIG_IRQ_TIME_ACCOUNTING enable: for fine granularity task IRQ
   accounting.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
---
 debian.realtime/config/config.common.ubuntu | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

Comments

Krzysztof Kozlowski Feb. 22, 2022, 8:18 a.m. UTC | #1 
On 22/02/2022 09:16, Krzysztof Kozlowski wrote:
> BugLink: https://bugs.launchpad.net/bugs/1961588
> 
> Change kernel config to fit Realtime use cases:

This should be [J/realtime].

I will send a v2.


Best regards,
Krzysztof
diff mbox series

Patch

diff --git a/debian.realtime/config/config.common.ubuntu b/debian.realtime/config/config.common.ubuntu
index 9d325d4ab744..9cb2a8111c51 100644
--- a/debian.realtime/config/config.common.ubuntu
+++ b/debian.realtime/config/config.common.ubuntu
@@ -983,7 +983,7 @@  CONFIG_BITREVERSE=y
 CONFIG_BLK_CGROUP=y
 CONFIG_BLK_CGROUP_FC_APPID=y
 CONFIG_BLK_CGROUP_IOCOST=y
-# CONFIG_BLK_CGROUP_IOLATENCY is not set
+CONFIG_BLK_CGROUP_IOLATENCY=y
 CONFIG_BLK_CGROUP_IOPRIO=y
 CONFIG_BLK_CGROUP_RWSTAT=y
 CONFIG_BLK_DEBUG_FS=y
@@ -3848,6 +3848,7 @@  CONFIG_HAVE_PREEMPT_LAZY=y
 CONFIG_HAVE_REGS_AND_STACK_ACCESS_API=y
 CONFIG_HAVE_RELIABLE_STACKTRACE=y
 CONFIG_HAVE_RSEQ=y
+CONFIG_HAVE_SCHED_AVG_IRQ=y
 CONFIG_HAVE_SETUP_PER_CPU_AREA=y
 CONFIG_HAVE_SOFTIRQ_ON_OWN_STACK=y
 CONFIG_HAVE_STACKPROTECTOR=y
@@ -4894,7 +4895,7 @@  CONFIG_IRQ_FORCED_THREADING=y
 CONFIG_IRQ_MSI_IOMMU=y
 CONFIG_IRQ_POLL=y
 CONFIG_IRQ_REMAP=y
-# CONFIG_IRQ_TIME_ACCOUNTING is not set
+CONFIG_IRQ_TIME_ACCOUNTING=y
 CONFIG_IRQ_WORK=y
 CONFIG_IR_ENE=m
 CONFIG_IR_FINTEK=m
@@ -7012,7 +7013,7 @@  CONFIG_OPTPROBES=y
 CONFIG_ORANGEFS_FS=m
 CONFIG_ORINOCO_USB=m
 CONFIG_OSF_PARTITION=y
-# CONFIG_OSNOISE_TRACER is not set
+CONFIG_OSNOISE_TRACER=y
 CONFIG_OUTPUT_FORMAT="elf64-x86-64"
 CONFIG_OVERLAY_FS=m
 # CONFIG_OVERLAY_FS_INDEX is not set
@@ -10468,7 +10469,7 @@  CONFIG_TIFM_CORE=m
 CONFIG_TIGON3=m
 CONFIG_TIGON3_HWMON=y
 CONFIG_TIMERFD=y
-# CONFIG_TIMERLAT_TRACER is not set
+CONFIG_TIMERLAT_TRACER=y
 CONFIG_TIMER_ACPI=y
 CONFIG_TIMER_IMX_SYS_CTR=y
 CONFIG_TIMER_OF=y
@@ -11806,7 +11807,7 @@  CONFIG_WM831X_WATCHDOG=m
 CONFIG_WM8350_POWER=m
 CONFIG_WM8350_WATCHDOG=m
 CONFIG_WMI_BMOF=m
-CONFIG_WQ_POWER_EFFICIENT_DEFAULT=y
+# CONFIG_WQ_POWER_EFFICIENT_DEFAULT is not set
 # CONFIG_WQ_WATCHDOG is not set
 CONFIG_WWAN=y
 CONFIG_WWAN_HWSIM=m