srcu_read_lock_nmisafe(9)

💖 NAME 💖

srcu_read_lock_nmisafe — register a new reader for an SRCU-protected structure. 💅

hey bestie, welcome to the srcu_read_lock_nmisafe(9) page from the Kernel API Manual ✨ this is the one where we slide into an SRCU read-side critical section in an NMI-safe way 🎀

✨ SYNOPSIS ✨

int srcu_read_lock_nmisafe (struct srcu_struct *ssp );

🎀 ARGUMENTS 🎀

• ssp — the srcu_struct in which to register the new reader. that's the lil home for your new reader 🫶

💅 DESCRIPTION 💅

okay so this function enters an SRCU read-side critical section, but in an NMI-safe manner ✨ yes bestie, NMI-safe, we love a specialized entrance 🌸

for the full lore, see srcu_read_lock for more information 💖

real talk though: if srcu_read_lock_nmisafe is ever used on an srcu_struct structure, then none of the other flavors may be used, whether before, during, or after. 💀 no cap, that's the rule — pick your lane and stay in it 🙈

🦋 SEE ALSO 🦋

• Kernel file ./include/linux/srcu.h
• get_completed_synchronize_srcu(9)
• same_state_synchronize_srcu(9)
• srcu_read_lock_held(9)
• srcu_dereference_check(9)
• srcu_dereference(9)
• srcu_dereference_notrace(9)
• srcu_read_lock(9)
• srcu_read_lock_fast(9)
• srcu_read_lock_fast_updown(9)
• srcu_down_read_fast(9)
• srcu_down_read(9)
• srcu_read_unlock(9)
• srcu_read_unlock_fast(9)
• srcu_read_unlock_fast_updown(9)
• srcu_up_read_fast(9)
• srcu_read_unlock_nmisafe(9)
• srcu_up_read(9)
• smp_mb__after_srcu_read_unlock(9)
• smp_mb__after_srcu_read_lock(9)

mwah 💋 this lil page comes from ./include/linux, dated October 2026, and it's all about srcu_read_lock_nmisafe(9) — bye bestie, go slay those SRCU readers! 🫶🔥