diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2023-10-30 17:56:53 -1000 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2023-10-30 17:56:53 -1000 |
| commit | 9a0f53e0cfc2ef262c05b8e4ab89e7f2accaf96c (patch) | |
| tree | d5d05ad14bb222c7d20f96e5738eb8ff95a797a3 /Documentation/admin-guide | |
| parent | 6750f0de53b7d64a4deffa62944ea431a153ec48 (diff) | |
| parent | 94b3f0b5af2c7af69e3d6e0cdd9b0ea535f22186 (diff) | |
| download | linux-9a0f53e0cfc2ef262c05b8e4ab89e7f2accaf96c.tar.gz | |
Merge tag 'csd-lock.2023.10.23a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu
Pull CSD lock update from Paul McKenney:
"This adds a kernel boot parameter that causes the kernel to panic if
one of the call_smp_function() APIs is stalled for more than the
specified duration.
This is useful in deployments in which a clean panic is preferable to
an indefinite stall"
* tag 'csd-lock.2023.10.23a' of git://git.kernel.org/pub/scm/linux/kernel/git/paulmck/linux-rcu:
smp,csd: Throw an error if a CSD lock is stuck for too long
Diffstat (limited to 'Documentation/admin-guide')
| -rw-r--r-- | Documentation/admin-guide/kernel-parameters.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt index 45e34be4ed56a..582f7a3951538 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -5864,6 +5864,13 @@ This feature may be more efficiently disabled using the csdlock_debug- kernel parameter. + smp.panic_on_ipistall= [KNL] + If a csd_lock_timeout extends for more than + the specified number of milliseconds, panic the + system. By default, let CSD-lock acquisition + take as long as they take. Specifying 300,000 + for this value provides a 5-minute timeout. + smsc-ircc2.nopnp [HW] Don't use PNP to discover SMC devices smsc-ircc2.ircc_cfg= [HW] Device configuration I/O port smsc-ircc2.ircc_sir= [HW] SIR base I/O port |