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Masami Hiramatsu d55cb6cf14 ftrace: Allow stealing pages from pipe buffer 
Use generic steal operation on pipe buffer to allow stealing
ring buffer's read page from pipe buffer.

Note that this could reduce the performance of splice on the
splice_write side operation without affinity setting.
Since the ring buffer's read pages are allocated on the
tracing-node, but the splice user does not always execute
splice write side operation on the same node. In this case,
the page will be accessed from the another node.
Thus, it is strongly recommended to assign the splicing
thread to corresponding node.

Signed-off-by: Masami Hiramatsu <masami.hiramatsu.pt@hitachi.com>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
 		2012-09-28 15:05:12 +09:30
..
Kconfig Merge branch 'perf-uprobes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-05-24 11:39:34 -07:00
Makefile Merge branch 'perf-uprobes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2012-05-24 11:39:34 -07:00
blktrace.c simple_open: automatically convert to simple_open() 2012-04-05 15:25:50 -07:00
ftrace.c ftrace: Remove a superfluous check 2012-06-14 15:22:12 -04:00
power-traces.c
…
ring_buffer.c Merge branch 'linus' into perf/core 2012-07-18 11:17:17 +02:00
ring_buffer_benchmark.c
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rpm-traces.c PM / Runtime: Introduce trace points for tracing rpm_* functions 2011-09-27 22:53:27 +02:00
trace.c ftrace: Allow stealing pages from pipe buffer 2012-09-28 15:05:12 +09:30
trace.h tracing: Remove NR_CPUS array from trace_iterator 2012-06-28 13:52:15 -04:00
trace_branch.c
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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/trace: Add ability to set a target task for events 2012-07-31 17:02:05 +02:00
trace_events.c tracing: Do not enable function event with enable 2012-05-10 15:55:43 -04:00
trace_events_filter.c ftrace, perf: Add filter support for function trace event 2012-02-21 11:08:30 -05:00
trace_events_filter_test.h tracing/filter: Add startup tests for events filter 2011-08-19 14:35:59 -04:00
trace_export.c tracing: Do not enable function event with enable 2012-05-10 15:55:43 -04:00
trace_functions.c tracing/function: Convert func_set_flag() to a switch statement 2012-07-17 10:15:04 -07:00
trace_functions_graph.c tracing: Remove NR_CPUS array from trace_iterator 2012-06-28 13:52:15 -04:00
trace_irqsoff.c Merge branch 'tip/perf/core' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace into perf/core 2011-11-11 08:19:37 +01:00
trace_kdb.c
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trace_kprobe.c perf/trace: Add ability to set a target task for events 2012-07-31 17:02:05 +02:00
trace_mmiotrace.c
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trace_nop.c
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trace_output.c tracing: Register the ftrace internal events during early boot 2012-06-14 15:22:14 -04:00
trace_output.h
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trace_printk.c tracing: Add percpu buffers for trace_printk() 2012-04-23 21:15:55 -04:00
trace_probe.c tracing: Provide trace events interface for uprobes 2012-05-07 14:30:17 +02:00
trace_probe.h tracing: Provide trace events interface for uprobes 2012-05-07 14:30:17 +02:00
trace_sched_switch.c
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trace_sched_wakeup.c tracing/latency: Fix header output for latency tracers 2011-11-07 13:48:35 -05:00
trace_selftest.c
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trace_selftest_dynamic.c
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trace_stack.c tracing: Have stack tracing set filtered functions at boot 2011-12-21 07:26:49 -05:00
trace_stat.c
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trace_stat.h
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trace_syscalls.c tracing/syscalls: Fix perf syscall tracing when syscall_nr == -1 2012-08-17 15:19:46 -04:00
trace_uprobe.c perf/trace: Add ability to set a target task for events 2012-07-31 17:02:05 +02:00