Steven Rostedt 73c5162aa3 tracing: keep ring buffer to minimum size till used ... Impact: less memory impact on systems not using tracer When the kernel boots up that has tracing configured, it allocates the default size of the ring buffer. This currently happens to be 1.4Megs per possible CPU. This is quite a bit of wasted memory if the system is never using the tracer. The current solution is to keep the ring buffers to a minimum size until the user uses them. Once a tracer is piped into the current_tracer the ring buffer will be expanded to the default size. If the user changes the size of the ring buffer, it will take the size given by the user immediately. If the user adds a "ftrace=" to the kernel command line, then the ring buffers will be set to the default size on initialization. Signed-off-by: Steven Rostedt <srostedt@redhat.com>		2009-03-11 22:15:22 -04:00
..
blktrace.c	tracing: remove funky whitespace in the trace code	2009-03-10 14:13:14 -04:00
events.c	tracing: use generic __stringify	2009-03-10 00:35:05 -04:00
ftrace.c	tracing: fix deadlock when setting set_ftrace_pid	2009-03-06 12:07:38 +01:00
Kconfig	tracing/core: drop the old trace_printk() implementation in favour of trace_bprintk()	2009-03-06 17:59:12 +01:00
kmemtrace.c	tracing: Introduce trace_buffer_{lock_reserve,unlock_commit}	2009-02-06 01:01:41 +01:00
Makefile	tracing/core: drop the old trace_printk() implementation in favour of trace_bprintk()	2009-03-06 17:59:12 +01:00
ring_buffer.c	tracing: make all file_operations const	2009-03-05 21:46:40 -05:00
trace_boot.c	tracing: Introduce trace_buffer_{lock_reserve,unlock_commit}	2009-02-06 01:01:41 +01:00
trace_branch.c	tracing: remove funky whitespace in the trace code	2009-03-10 14:13:14 -04:00
trace_clock.c	tracing: implement trace_clock_*() APIs	2009-02-26 18:44:06 +01:00
trace_event_types.h	tracing: new format for specialized trace points	2009-03-10 00:35:07 -04:00
trace_events_stage_1.h	tracing: update comments to match event code macros	2009-03-10 13:12:58 -04:00
trace_events_stage_2.h	tracing: update comments to match event code macros	2009-03-10 13:12:58 -04:00
trace_events_stage_3.h	tracing: remove funky whitespace in the trace code	2009-03-10 14:13:14 -04:00
trace_events.c	tracing: add back the available_events file	2009-03-10 12:04:02 -04:00
trace_export.c	tracing: remove funky whitespace in the trace code	2009-03-10 14:13:14 -04:00
trace_functions_graph.c	tracing: remove funky whitespace in the trace code	2009-03-10 14:13:14 -04:00
trace_functions.c	tracing/core: use appropriate waiting on trace_pipe	2009-02-18 01:40:20 +01:00
trace_hw_branches.c	tracing/hw-branch-tracing: convert bts-tracer mutex to a spinlock	2009-02-25 09:16:01 +01:00
trace_irqsoff.c	tracing: have latency tracers set the latency format	2009-03-04 22:15:30 -05:00
trace_mmiotrace.c	tracing/core: drop the old trace_printk() implementation in favour of trace_bprintk()	2009-03-06 17:59:12 +01:00
trace_nop.c	trace: Call tracing_reset_online_cpus before tracer->init()	2009-02-06 01:01:41 +01:00
trace_output.c	tracing: remove funky whitespace in the trace code	2009-03-10 14:13:14 -04:00
trace_output.h	tracing/core: drop the old trace_printk() implementation in favour of trace_bprintk()	2009-03-06 17:59:12 +01:00
trace_power.c	tracing: convert c/p state power tracer to use tracepoints	2009-02-13 09:06:18 -05:00
trace_printk.c	tracing/core: drop the old trace_printk() implementation in favour of trace_bprintk()	2009-03-06 17:59:12 +01:00
trace_sched_switch.c	tracing/core: use appropriate waiting on trace_pipe	2009-02-18 01:40:20 +01:00
trace_sched_wakeup.c	tracing: have latency tracers set the latency format	2009-03-04 22:15:30 -05:00
trace_selftest_dynamic.c	ftrace: fix dynamic ftrace selftest	2008-05-23 21:13:23 +02:00
trace_selftest.c	tracing: use generic __stringify	2009-03-10 00:35:05 -04:00
trace_stack.c	trace: better use of stack_trace_enabled for boot up code	2008-12-18 12:56:56 +01:00
trace_stat.c	tracing: fix typing mistake in hint message and comments	2009-02-17 12:38:24 -05:00
trace_stat.h	tracing/ftrace: separate events tracing and stats tracing engine	2009-01-14 12:11:37 +01:00
trace_sysprof.c	tracing: make all file_operations const	2009-03-05 21:46:40 -05:00
trace_workqueue.c	tracing: remove funky whitespace in the trace code	2009-03-10 14:13:14 -04:00
trace.c	tracing: keep ring buffer to minimum size till used	2009-03-11 22:15:22 -04:00
trace.h	tracing: new format for specialized trace points	2009-03-10 00:35:07 -04:00