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2711ca237a
linux/kernel/trace
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Steven Rostedt 2711ca237a ring-buffer: Move zeroing out excess in page to ring buffer code 
Currently the trace splice code zeros out the excess bytes in the page before
sending it off to userspace.

This is to make sure userspace is not getting anything it should not be
when reading the pages, because the excess data was never initialized
to zero before writing (for perfomance reasons).

But the splice code has no business in doing this work, it should be
done by the ring buffer. With the latest changes for recording lost
events, the splice code gets it wrong anyway.

Move the zeroing out of excess bytes into the ring buffer code.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2010-05-25 11:57:26 -04:00
..
blktrace.c tracing: Allow events to share their print functions 2010-05-14 14:20:32 -04:00
ftrace.c Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-05-18 08:35:04 -07:00
Kconfig x86, perf, bts, mm: Delete the never used BTS-ptrace code 2010-03-26 11:33:55 +01:00
kmemtrace.c tracing: Allow events to share their print functions 2010-05-14 14:20:32 -04:00
Makefile x86, perf, bts, mm: Delete the never used BTS-ptrace code 2010-03-26 11:33:55 +01:00
power-traces.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
ring_buffer_benchmark.c ring-buffer: Make benchmark handle missed events 2010-04-27 13:26:58 -04:00
ring_buffer.c ring-buffer: Move zeroing out excess in page to ring buffer code 2010-05-25 11:57:26 -04:00
trace_boot.c tracing: add filter event logic to special, mmiotrace and boot tracers 2009-09-12 23:34:04 -04:00
trace_branch.c tracing: Allow events to share their print functions 2010-05-14 14:20:32 -04:00
trace_clock.c tracing: Fix lockdep warning in global_clock() 2010-03-29 15:16:44 -04:00
trace_entries.h x86, perf, bts, mm: Delete the never used BTS-ptrace code 2010-03-26 11:33:55 +01:00
trace_event_perf.c perf, trace: Fix !x86 build bug 2010-05-25 11:28:49 +02:00
trace_events_filter.c Merge branch 'perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip into trace/tip/tracing/core-6 2010-05-18 00:35:23 -04:00
trace_events.c tracing: Combine event filter_active and enable into single flags field 2010-05-14 14:33:22 -04:00
trace_export.c tracing: Remove duplicate id information in event structure 2010-05-14 14:33:15 -04:00
trace_functions_graph.c tracing: Allow events to share their print functions 2010-05-14 14:20:32 -04:00
trace_functions.c tracing: switch function prints from %pf to %ps 2009-09-17 15:53:40 -04:00
trace_irqsoff.c tracing: Add graph output support for irqsoff tracer 2010-04-27 12:36:53 -04:00
trace_kprobe.c Merge branch 'perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip into trace/tip/tracing/core-7 2010-05-21 11:49:57 -04:00
trace_ksym.c hw-breakpoints: Get the number of available registers on boot dynamically 2010-05-01 04:32:14 +02:00
trace_mmiotrace.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
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: Allow events to share their print functions 2010-05-14 14:20:32 -04:00
trace_output.h tracing: Allow events to share their print functions 2010-05-14 14:20:32 -04:00
trace_printk.c tracing: Remove markers 2009-09-18 21:22:08 +02:00
trace_sched_switch.c tracing: Let tracepoints have data passed to tracepoint callbacks 2010-05-14 09:50:34 -04:00
trace_sched_wakeup.c tracing: Let tracepoints have data passed to tracepoint callbacks 2010-05-14 09:50:34 -04:00
trace_selftest_dynamic.c
trace_selftest.c Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-05-18 08:35:04 -07:00
trace_stack.c tracing: Fix circular dead lock in stack trace 2010-02-02 10:20:18 -05:00
trace_stat.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
trace_stat.h tracing/stat: Add stat_release() callback 2009-07-10 12:14:05 +02:00
trace_syscalls.c Merge branch 'perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip into trace/tip/tracing/core-7 2010-05-21 11:49:57 -04:00
trace_sysprof.c perf events, x86/stacktrace: Make stack walking optional 2009-12-17 09:56:19 +01:00
trace_workqueue.c tracing: Let tracepoints have data passed to tracepoint callbacks 2010-05-14 09:50:34 -04:00
trace.c ring-buffer: Move zeroing out excess in page to ring buffer code 2010-05-25 11:57:26 -04:00
trace.h Merge branch 'tracing-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip 2010-05-18 08:35:04 -07:00