lib.softirq.core Module Reference

Data Structures
struct	lib::softirq_entry
	One entry in the global softirq vector table. More...
struct	lib::softirq_state
	Per-CPU softirq execution state. More...

Enumerations
enum class	softirq_vec : u8 {   hi = 0 , timer = 1 , net_tx = 2 , net_rx = 3 ,   block = 4 , irq_poll = 5 , tasklet = 6 , sched = 7 ,   hrtimer = 8 , rcu = 9 , mutex_release = 10 , nohz_idle = 11 ,   numa = 12 , _count }
	Softirq vector identifier.

Typedefs
using	lib::softirq_fn = auto (*)(void* data) noexcept -> void
	Function pointer type invoked by the softirq dispatcher.

Functions
auto	lib::do_softirq () noexcept -> void
	Drain all pending softirq vectors on the current CPU.
auto	lib::open_softirq (softirq_vec v, softirq_fn action, void *data) noexcept -> std::expected< void, lib::kernel_error >
	Register a handler for a softirq vector.
auto	lib::raise_softirq (softirq_vec v) noexcept -> void
	Mark a softirq vector as pending on the current CPU.
auto	lib::raise_softirq_on (u16 cpu, softirq_vec v) noexcept -> void
	Mark a softirq vector as pending on a remote CPU.
constexpr auto	lib::softirq_bit (softirq_vec v) noexcept -> u32
	Convert a softirq vector to its bit position in the pending bitmap.
auto	lib::softirq_clear (softirq_vec v) noexcept -> bool
	Clear a pending softirq vector without dispatching it.
auto	lib::softirq_entry_for (softirq_vec v) noexcept -> const softirq_entry &
	Return the global vector-table entry for a softirq vector.
constexpr auto	lib::softirq_index (softirq_vec v) noexcept -> u32
	Convert a softirq vector to its dense index in the vector table.
auto	lib::softirq_pending () noexcept -> bool
	Test whether any softirq is pending on the current CPU.
auto	lib::softirq_stats () noexcept -> std::pair< u64, u64 >
	Read this CPU's softirq dispatch statistics (for diagnostics).
auto	lib::softirq_test (softirq_vec v) noexcept -> bool
	Test whether a particular softirq vector is pending on this CPU.

Variables
softirq_fn	action {nullptr}
void *	data {nullptr}
u64	dispatch_count {0U}
	Monotonic counter bumped every time do_softirq is entered.
std::atomic< u32 >	generation {0U}
	Generation counter bumped on open_softirq, allowing callers to detect re-registration of a vector slot (e.g. for diagnostics).
u32	nest {0U}
	Recursive re-entry guard (a softirq may raise another softirq).
constexpr u32	lib::NR_SOFTIRQS = static_cast<u32>(softirq_vec::_count)
	Maximum number of softirq vectors supported by the framework.
std::atomic< u32 >	pending {0U}
	Bitmap of pending softirq vectors (one bit per softirq_vec).
u32	processing {0U}
	Snapshot of pending bits being processed right now in do_softirq.
u64	raise_count {0U}
	Monotonic counter bumped every time raise_softirq actually sets a bit.
constexpr softirq_vec	lib::SOFTIRQ_VEC_NONE = static_cast<softirq_vec>(0xFFU)
	Reserved value for "no softirq vector" returns.

Files
file	lib/softirq.zcomponent/core.cxxm
file	lib/softirq.zcomponent/core.cxx