srcu_dereference(9)

🌸 srcu_dereference(9) 🌸

okay bestie, welcome to the Kernel API Manual page for srcu_dereference — the little helper that grabs an SRCU-protected pointer so you can dereference it later. it's giving “fetch now, dereference later” energy, and honestly? iconic. 💅

💖 NAME 💖

srcu_dereference — fetch SRCU-protected pointer for later dereferencing. no cap, that's the whole vibe. 🦋

✨ SYNOPSIS ✨

srcu_dereference (p , ssp );

🎀 ARGUMENTS 🎀

• p — the pointer to fetch and protect for later dereferencing. this is the main-character pointer, fr fr. 🫶
• ssp — pointer to the srcu_struct, which is used to check that we really are in an SRCU read-side critical section. it's the vibe-checker for your read-side critical section. 👑

🔥 DESCRIPTION 🔥

this one makes rcu_dereference_check do the dirty work. lowkey a delegation queen. ✨

⚠️ If PROVE_RCU is enabled, invoking this outside of an RCU read-side critical section will result in an RCU-lockdep splat. so yeah, that's the dramatic part — stay in your critical section, bestie, unless you want the splat. 😭

🌈 SEE ALSO 🌈

Kernel file: ./include/linux/srcu.h — that's the home base. the whole squad is here:

• get_completed_synchronize_srcu(9)
• same_state_synchronize_srcu(9)
• srcu_read_lock_held(9)
• srcu_dereference_check(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_read_lock_nmisafe(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 💋 that's the page, bestie. footer shoutout: ./include/linux, October 2026, and srcu_dereference(9) — periodt. 🫶✨