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| author | Steven Rostedt <rostedt@goodmis.org> | 2008-05-12 21:20:55 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2008-05-23 21:14:11 +0200 |
| commit | 92205c2343527a863d660360599a4bf8cede77b0 (patch) | |
| tree | c85cf8495cd2eb52a99062e3505cd81851cd3444 /kernel/user_namespace.c | |
| parent | ftrace: irqsoff use raw_smp_processor_id (diff) | |
| download | linux-92205c2343527a863d660360599a4bf8cede77b0.tar.xz linux-92205c2343527a863d660360599a4bf8cede77b0.zip | |
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>
Diffstat (limited to 'kernel/user_namespace.c')
0 files changed, 0 insertions, 0 deletions