tree c85cf8495cd2eb52a99062e3505cd81851cd3444
parent c5f888cae49dfe3e86d9d1e0dab2b63ceb057be3
author Steven Rostedt <rostedt@goodmis.org> 1210620055 +0200
committer Thomas Gleixner <tglx@linutronix.de> 1211570051 +0200

ftrace: user raw_spin_lock in tracing

Lock debugging enabled cause huge performance problems for tracing. Having
the lock verification happening for every function that is called
because mcount calls spin_lock can cripple the system.

This patch converts the spin_locks used by ftrace into raw_spin_locks.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>