ftrace: user raw_spin_lock in tracing

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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>

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Steven Rostedt 2008-05-12 21:20:55 +02:00 • committed by Thomas Gleixner

parent c5f888cae4

commit 92205c2343

2 changed files with 31 additions and 22 deletions

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51

kernel/trace/trace.c

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2

kernel/trace/trace.h

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