diff options
Diffstat (limited to 'Documentation/kernel-parameters.txt')
| -rw-r--r-- | Documentation/kernel-parameters.txt | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index d7e736c53e51..4eb5fff022b4 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -774,6 +774,15 @@ bytes respectively. Such letter suffixes can also be entirely omitted. disable= [IPV6] See Documentation/networking/ipv6.txt. + disable_cpu_apicid= [X86,APIC,SMP] + Format: <int> + The number of initial APIC ID for the + corresponding CPU to be disabled at boot, + mostly used for the kdump 2nd kernel to + disable BSP to wake up multiple CPUs without + causing system reset or hang due to sending + INIT from AP to BSP. + disable_ddw [PPC/PSERIES] Disable Dynamic DMA Window support. Use this if to workaround buggy firmware. @@ -2633,7 +2642,6 @@ bytes respectively. Such letter suffixes can also be entirely omitted. for RCU-preempt, and "s" for RCU-sched, and "N" is the CPU number. This reduces OS jitter on the offloaded CPUs, which can be useful for HPC and - real-time workloads. It can also improve energy efficiency for asymmetric multiprocessors. @@ -2649,8 +2657,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted. periodically wake up to do the polling. rcutree.blimit= [KNL] - Set maximum number of finished RCU callbacks to process - in one batch. + Set maximum number of finished RCU callbacks to + process in one batch. rcutree.rcu_fanout_leaf= [KNL] Increase the number of CPUs assigned to each @@ -2669,8 +2677,8 @@ bytes respectively. Such letter suffixes can also be entirely omitted. value is one, and maximum value is HZ. rcutree.qhimark= [KNL] - Set threshold of queued - RCU callbacks over which batch limiting is disabled. + Set threshold of queued RCU callbacks beyond which + batch limiting is disabled. rcutree.qlowmark= [KNL] Set threshold of queued RCU callbacks below which |