Synchronization in Linux Kernel Programming

Synchronization in Linux Kernel Programming
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Author: Kernel
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PROOF COURSE:

What you’ll learn
Synchronization concepts in Linux Kernel
Requirements
Should be able to write/understand Hello World Linux Kernel Module
Should be able to write/understand Linux Kernel Modules for /proc filesystem
Description
Update: Sep 15: Added RCU Section
What you will learn in this course
Various concepts related to concurrency like: preemption, context switch, reentrancy, critical section, race condition
Various Synchronization techniques
Per CPU Variables
Atomic Variables
Spinlocks
Semaphores
Mutexes
Read Write Locks
Sequence Locks
Read Copy Update(RCU)
API’s/Macros/Structures:
spinlock_t, DEFINE_SPINLOCK, spin_lock, spin_unlock, spin_trylock, spin_lock_irqsave, spin_unlock_irqrestore,spin_lock_irq, spin_unlock_irq
atomic_t, atomic64_t, ATOMIC_INIT, atomic_inc, atomic_dec, atomic_set, atomic_read, atomic_add, atomic_sub,
atomic_dec_and_test, atomic_inc_and_test, atomic_sub_and_test, atomic_add_negative,atomic_add_return, atomic_sub_return, atomic_inc_return, atomic_dec_return,atomic_fetch_add, atomic_fetch_sub, atomic_cmpxchg, atomic_xchg,set_bit, clear_bit, change_bit, test_and_set_bit, test_and_clear_bit, test_and_change_bit,
NR_CPUS,num_online_cpus,smp_processor_id,get_cpu,put_cpu,DEFINE_PER_CPU,get_cpu_var, put_cpu_var, per_cpu, for_each_online_cpu, alloc_percpu, free_percpu, per_cpu_ptr
rcu_read_lock, rcu_read_unlock, synchronize_rcu, call_rcu, rcu_assign_pointer, rcu_dereference
seqlock_t, seqcount_t, DEFINE_SEQLOCK, seqlock_init, write_seqlock, write_sequnlock
struct rw_semaphore, DECLARE_RWSEM, init_rwsem, down_read, up_read, down_write, up_write, down_read_trylock, down_write_trylock, downgrade_write
struct rwlock_t, DEFINE_RWLOCK, rwlock_init, read_lock, read_unlock, write_lock, write_unlock
struct mutex, DEFINE_MUTEX, mutex_init, mutex_lock, mutex_unlock, mutex_trylock, mutex_lock_interruptible, mutex_unlock_interruptible, mutex_is_locked
struct semaphore, sema_init, DEFINE_SEMAPHORE, down, up, down_interruptible, down_trylock, down_timeout, down_killable
Commands used in the course
nproc
ps -eaF
ps aux
Who this course is for:
Linux Kernel Developers interested in learning various synchronization techniques

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