Steven Rostedt 3554228d42 ring-buffer: only warn on wrap if buffer is bigger than two pages ... On boot up, to save memory, ftrace allocates the minimum buffer which is two pages. Ftrace also goes through a series of tests (when configured) on boot up. These tests can fill up a page within a single interrupt. The ring buffer also has a WARN_ON when it detects that the buffer was completely filled within a single commit (other commits are allowed to be nested). Combine the small buffer on start up, with the tests that can fill more than a single page within an interrupt, this can trigger the WARN_ON. This patch makes the WARN_ON only happen when the ring buffer consists of more than two pages. [ Impact: prevent false WARN_ON in ftrace startup tests ] Reported-by: Ingo Molnar <mingo@elte.hu> LKML-Reference: <20090421094616.GA14561@elte.hu> Signed-off-by: Steven Rostedt <rostedt@goodmis.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>		2009-04-21 16:00:45 +02:00
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blktrace.c	blktrace: fix context-info when mixed-using blk tracer and trace events	2009-04-16 10:11:01 +02:00
ftrace.c	ftrace: use module notifier for function tracer	2009-04-17 16:59:15 +02:00
Kconfig	tracing: rename EVENT_TRACER config to ENABLE_EVENT_TRACING	2009-04-20 17:55:35 +02:00
kmemtrace.c	tracing/filters: use ring_buffer_discard_commit() in filter_check_discard()	2009-04-14 00:00:56 +02:00
Makefile	tracing/events: move the ftrace event tracing code to core	2009-04-14 12:57:59 -04:00
ring_buffer.c	ring-buffer: only warn on wrap if buffer is bigger than two pages	2009-04-21 16:00:45 +02:00
trace_boot.c	tracing: use macros to denote usec and nsec per second	2009-04-07 14:43:06 +02:00
trace_branch.c	tracing/filters: use ring_buffer_discard_commit() in filter_check_discard()	2009-04-14 00:00:56 +02:00
trace_clock.c	tracing: fix four sparse warnings	2009-03-22 18:16:54 +01:00
trace_event_profile.c	tracing/events: convert event call sites to use a link list	2009-04-14 12:58:00 -04:00
trace_event_types.h	tracing/filters: add TRACE_EVENT_FORMAT_NOFILTER event macro	2009-04-14 00:00:51 +02:00
trace_events_filter.c	tracing/filters: allow user-input to be integer-like string	2009-04-21 11:58:28 +02:00
trace_events.c	tracing/filters: don't remove old filters when failed to write subsys->filter	2009-04-21 11:58:27 +02:00
trace_export.c	tracing/filters: allow on-the-fly filter switching	2009-04-14 00:03:55 +02:00
trace_functions_graph.c	function-graph: add option to calculate graph time or not	2009-03-24 23:41:11 -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/filters: use ring_buffer_discard_commit() in filter_check_discard()	2009-04-14 00:00:56 +02:00
trace_irqsoff.c	tracing: have latency tracers set the latency format	2009-03-04 22:15:30 -05:00
trace_mmiotrace.c	tracing: use macros to denote usec and nsec per second	2009-04-07 14:43:06 +02:00
trace_nop.c	tracing/ftrace: make nop-tracer use polling wait for events on pipe	2009-03-23 09:22:15 +01:00
trace_output.c	tracing/events: add export symbols for trace events in modules	2009-04-14 12:58:01 -04:00
trace_output.h	tracing/events: move declarations from trace directory to core include	2009-04-14 12:57:58 -04:00
trace_power.c	tracing/filters: use ring_buffer_discard_commit() in filter_check_discard()	2009-04-14 00:00:56 +02:00
trace_printk.c	tracing/ftrace: factorize the tracing files creation	2009-04-07 14:43:07 +02:00
trace_sched_switch.c	tracing/events: move trace point headers into include/trace/events	2009-04-14 22:05:43 -04:00
trace_sched_wakeup.c	tracing/events: move trace point headers into include/trace/events	2009-04-14 22:05:43 -04:00
trace_selftest_dynamic.c	ftrace: fix dynamic ftrace selftest	2008-05-23 21:13:23 +02:00
trace_selftest.c	tracing: keep the tracing buffer after self-test failure	2009-03-22 15:17:21 +01:00
trace_stack.c	tracing/ftrace: factorize the tracing files creation	2009-04-07 14:43:07 +02:00
trace_stat.c	Merge branch 'linus' into tracing/core	2009-04-07 13:47:45 +02:00
trace_stat.h	tracing: add handler to trace_stat	2009-03-24 23:22:58 -04:00
trace_syscalls.c	tracing/syscalls: use a dedicated file header	2009-04-09 05:43:32 +02:00
trace_sysprof.c	tracing/ftrace: factorize the tracing files creation	2009-04-07 14:43:07 +02:00
trace_workqueue.c	Merge branch 'linus' into tracing/core	2009-04-07 13:47:45 +02:00
trace.c	tracing: protect trace_printk from recursion	2009-04-17 16:21:35 -04:00
trace.h	tracing/filters: add filter_mutex to protect filter predicates	2009-04-17 18:28:27 +02:00