Struct dpdk_unix::android_linux::WarningsToSuppress

pub struct WarningsToSuppress {
    pub suppress_warnings_for_cpu_features: HashSet<String>,
    pub suppress_warnings_for_kernel_features: HashSet<String>,
    pub suppress_warnings_for_miscellany: HashSet<String>,
}

CPU and Kernel missing feature warnings to suppress.

Fields

suppress_warnings_for_cpu_features: HashSet<String>

Missing CPU features whose warnings should be supressed.

Current names (and typical warning messages) are:-

• spectre_v2_google: "Kernel has spectre_v2=retpoline,google; this is probably not the best choice".
• has_rep_movsb_stosb: "Your CPU does not support the REP MOVSB and REP STOSB instructions, which are optimal for some memory moves and copies".
• has_prefetchw: "Your CPU does not support the PRETFCHW instruction, which is optimal for some memory moves and copies".
• has_ss: "Your CPU does not support self-snoop of the cache (which nearly all should), which is important for efficient cache mamangement in this application".
• has_working_xsave: "CPU architecture either lacks XSAVE support or the Linux kernel has disabled XSAVE support".
• has_invpcid: "Your CPU does not support the INVPCID instruction, which is important for efficient mitigation of the Meltdown and Spectre security vulnerabilities".
• has_smap: "Your CPU does not support the Supervisor-Mode Access Prevention (SMAP) instructions CLAC and STAC, which are important for securing modern Linux systems".

suppress_warnings_for_kernel_features: HashSet<String>

Missing Kernel features whose warnings should be supressed.

Current names (and typical warning messages) are:-

• hashdist: Warnings about hashdist=0.
• noaliencache: "Kernel has noaliencache enabled; this is likely to hurt performance".
• numa_zonelist_order: "Kernel has noaliencache enabled; this is likely to hurt performance".
• skew_tick: "Kernel should have skew_tick=1 for maximum performance at the cost of power consumption".
• idle_poll: "Warnings about idle!=poll".
• noxsaveopt: "Kernel has noxsaveopt enabled; this is likely to hurt performance".

suppress_warnings_for_miscellany: HashSet<String>

Miscellaneous warnings which should be supressed.

Current names (and typical warning messages) are:-

• too_many_shared_hyper_threads: "There are more than 2 shared hyper threads".
• too_few_shared_hyper_threads: "There is only 1 shared hyper thread (which will be shared with the master logical core and control threads)".
• overlapping_shared_hyper_threads: "More than one (actually, {}) hyper threads of the group '{:?}' are present in the shared hyper threads".
• too_many_numa_nodes_shared_hyper_threads: "More than one (actually, {:?}) NUMA nodes are present in the shared hyper threads".

Trait Implementations

impl Clone for WarningsToSuppress

fn clone(&self) -> WarningsToSuppress

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Default for WarningsToSuppress

fn default() -> WarningsToSuppress

Returns the "default value" for a type.

impl Debug for WarningsToSuppress

fn fmt(&self, f: &mut Formatter) -> Result

Formats the value using the given formatter.

impl Serialize for WarningsToSuppress

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error> where
    __S: Serializer, 

Serialize this value into the given Serde serializer.

impl<'de> Deserialize<'de> for WarningsToSuppress where
    WarningsToSuppress: Default, 

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error> where
    __D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.