Steven Rostedt (Red Hat) e91d4cdd95 ring-buffer: Fix first commit on sub-buffer having non-zero delta ...

commit d651aa1d68 upstream.

Each sub-buffer (buffer page) has a full 64 bit timestamp. The events on
that page use a 27 bit delta against that timestamp in order to save on
bits written to the ring buffer. If the time between events is larger than
what the 27 bits can hold, a "time extend" event is added to hold the
entire 64 bit timestamp again and the events after that hold a delta from
that timestamp.

As a "time extend" is always paired with an event, it is logical to just
allocate the event with the time extend, to make things a bit more efficient.

Unfortunately, when the pairing code was written, it removed the "delta = 0"
from the first commit on a page, causing the events on the page to be
slightly skewed.

Fixes: 69d1b839f7 "ring-buffer: Bind time extend and data events together"
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Kamal Mostafa <kamal@canonical.com>

2014-02-25 08:44:21 -08:00

..

blktrace.c

simple_open: automatically convert to simple_open()

2012-04-05 15:25:50 -07:00

ftrace.c

ftrace: Fix synchronization location disabling and freeing ftrace_ops

2014-02-07 16:58:55 -08:00

Kconfig

ftrace: Update the kconfig for DYNAMIC_FTRACE

2013-03-14 11:26:36 -07:00

Makefile

trace: Stop compiling in trace_clock unconditionally

2012-09-13 22:52:08 -04:00

power-traces.c

perf: Clean up power events by introducing new, more generic ones

2011-01-04 08:16:54 +01:00

ring_buffer_benchmark.c

tracing: Use NUMA allocation for per-cpu ring buffer pages

2011-06-14 22:04:39 -04:00

ring_buffer.c

ring-buffer: Fix first commit on sub-buffer having non-zero delta

2014-02-25 08:44:21 -08:00

rpm-traces.c

PM / Runtime: Introduce trace points for tracing rpm_* functions

2011-09-27 22:53:27 +02:00

trace_branch.c

tracing: Cache comms only after an event occurred

2012-10-31 16:45:31 -04:00

trace_clock.c

tracing: Add a counter clock for those that do not trust clocks

2011-09-19 11:35:58 -04:00

trace_entries.h

Merge branch 'tip/perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/urgent

2012-03-24 08:19:09 +01:00

trace_event_perf.c

perf/ftrace: Fix paranoid level for enabling function tracer

2013-12-06 14:27:56 -08:00

trace_events_filter_test.h

tracing/filter: Add startup tests for events filter

2011-08-19 14:35:59 -04:00

trace_events_filter.c

tracing: Fix leaks of filter preds

2013-05-24 10:23:03 -07:00

trace_events.c

tracing: Use irq_work for wake ups and remove *_nowake_*() functions

2012-11-02 10:21:52 -04:00

trace_export.c

tracing: Do not enable function event with enable

2012-05-10 15:55:43 -04:00

trace_functions_graph.c

tracing: Cache comms only after an event occurred

2012-10-31 16:45:31 -04:00

trace_functions.c

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial

2012-12-13 12:00:02 -08:00

trace_irqsoff.c

tracing: Prevent buffer overwrite disabled for latency tracers

2013-04-05 09:26:16 -07:00

trace_kdb.c

kdb,ftdump: Remove reference to internal kdb include

2010-10-22 15:34:11 -05:00

trace_kprobe.c

tracing: Use irq_work for wake ups and remove *_nowake_*() functions

2012-11-02 10:21:52 -04:00

trace_mmiotrace.c

atomic: use <linux/atomic.h>

2011-07-26 16:49:47 -07:00

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: Format non-nanosec times from tsc clock without a decimal point.

2012-11-13 15:48:40 -05:00

trace_output.h

tracing: Allow events to share their print functions

2010-05-14 14:20:32 -04:00

trace_printk.c

tracing: Add percpu buffers for trace_printk()

2012-04-23 21:15:55 -04:00

trace_probe.c

tracing: Replace strict_strto* with kstrto*

2012-10-31 16:45:23 -04:00

trace_probe.h

tracing: Provide trace events interface for uprobes

2012-05-07 14:30:17 +02:00

trace_sched_switch.c

tracing: Use irq_work for wake ups and remove *_nowake_*() functions

2012-11-02 10:21:52 -04:00

trace_sched_wakeup.c

tracing: Prevent buffer overwrite disabled for latency tracers

2013-04-05 09:26:16 -07:00

trace_selftest_dynamic.c

ftrace: Add self-tests for multiple function trace users

2011-05-18 19:24:51 -04:00

trace_selftest.c

tracing: Fix ftrace_dump()

2013-05-11 13:54:09 -07:00

trace_stack.c

tracing: Check return value of tracing_init_dentry()

2013-05-07 20:08:19 -07:00

trace_stat.c

tracing: Check return value of tracing_init_dentry()

2013-05-07 20:08:19 -07:00

trace_stat.h

tracing/stat: Add stat_release() callback

2009-07-10 12:14:05 +02:00

trace_syscalls.c

tracing: Cleanup unnecessary function declarations

2012-10-31 16:45:34 -04:00

trace_uprobe.c

uprobes: Fix return value in error handling path

2013-07-18 11:07:37 -07:00

trace.c

tracing: Use current_uid() for critical time tracing

2013-07-16 10:35:56 -07:00

trace.h

tracing: Prevent buffer overwrite disabled for latency tracers

2013-04-05 09:26:16 -07:00