diff mbox series

kernel: Disable preemption debugging

Message ID 20250925175633.1148312-1-michael.tremer@ipfire.org
State Staged
Commit 2a3c757c1a4cfb94f460e9fc49ef9a5ce2d37a64
Headers
Series kernel: Disable preemption debugging |

Commit Message

Michael Tremer 25 Sep 2025, 5:56 p.m. UTC 
From the kernel configuration:

  If you say Y here then the kernel will use a debug variant of the
  commonly used smp_processor_id() function and will print warnings
  if kernel code uses it in a preemption-unsafe way. Also, the kernel
  will detect preemption count underflows.

  This option has potential to introduce high runtime overhead,
  depending on workload as it triggers debugging routines for each
  this_cpu operation. It should only be used for debugging purposes.

Signed-off-by: Michael Tremer <michael.tremer@ipfire.org>
---
 config/kernel/kernel.config.aarch64-ipfire | 2 +-
 config/kernel/kernel.config.x86_64-ipfire  | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/config/kernel/kernel.config.aarch64-ipfire b/config/kernel/kernel.config.aarch64-ipfire
index 775b23d8e..820647d5f 100644
--- a/config/kernel/kernel.config.aarch64-ipfire
+++ b/config/kernel/kernel.config.aarch64-ipfire
@@ -9096,7 +9096,7 @@  CONFIG_SCHED_INFO=y
 CONFIG_SCHEDSTATS=y
 # end of Scheduler Debugging
 
-CONFIG_DEBUG_PREEMPT=y
+# CONFIG_DEBUG_PREEMPT is not set
 
 #
 # Lock Debugging (spinlocks, mutexes, etc...)
diff --git a/config/kernel/kernel.config.x86_64-ipfire b/config/kernel/kernel.config.x86_64-ipfire
index 2ffc8bba1..31cc169a7 100644
--- a/config/kernel/kernel.config.x86_64-ipfire
+++ b/config/kernel/kernel.config.x86_64-ipfire
@@ -8173,7 +8173,7 @@  CONFIG_SCHED_INFO=y
 CONFIG_SCHEDSTATS=y
 # end of Scheduler Debugging
 
-CONFIG_DEBUG_PREEMPT=y
+# CONFIG_DEBUG_PREEMPT is not set
 
 #
 # Lock Debugging (spinlocks, mutexes, etc...)