Oleg Nesterov cd458ba9d5 tracing: Do not (ab)use trace_seq in event_id_read() ...

event_id_read() has no reason to kmalloc "struct trace_seq"
(more than PAGE_SIZE!), it can use a small buffer instead.

Note: "if (*ppos) return 0" looks strange and even wrong,
simple_read_from_buffer() handles ppos != 0 case corrrectly.

And it seems that almost every user of trace_seq in this file
should be converted too. Unless you use seq_open(), trace_seq
buys nothing compared to the raw buffer, but it needs a bit
more memory and code.

Link: http://lkml.kernel.org/r/20130718184712.GA4786@redhat.com

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>

2013-07-18 21:31:33 -04:00

..

blktrace.c

Merge branch 'for-3.10/drivers' of git://git.kernel.dk/linux-block

2013-05-08 11:51:05 -07:00

ftrace.c

ftrace: Do not run selftest if command line parameter is set

2013-07-01 20:57:15 -04:00

Kconfig

ring-buffer: Select IRQ_WORK

2013-05-03 19:24:17 -04:00

Makefile

trace: Stop compiling in trace_clock unconditionally

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

power-traces.c

PM / tracing: remove deprecated power trace API

2013-01-26 00:39:12 +01:00

ring_buffer_benchmark.c

…

ring_buffer.c

tracing: Typo fix on ring buffer comments

2013-07-18 21:31:26 -04:00

rpm-traces.c

…

trace_branch.c

tracing: Fix the branch tracer that broke with buffer change

2013-03-15 00:35:54 -04:00

trace_clock.c

tracing: Add "uptime" trace clock that uses jiffies

2013-03-15 00:36:09 -04:00

trace_entries.h

tracing: Add trace_puts() for even faster trace_printk() tracing

2013-03-15 00:35:55 -04:00

trace_event_perf.c

tracing/perf: Move the PERF_MAX_TRACE_SIZE check into perf_trace_buf_prepare()

2013-07-18 21:31:28 -04:00

trace_events_filter_test.h

…

trace_events_filter.c

tracing: Use trace_seq_puts()/trace_seq_putc() where possible

2013-07-18 21:30:36 -04:00

trace_events.c

tracing: Do not (ab)use trace_seq in event_id_read()

2013-07-18 21:31:33 -04:00

trace_export.c

tracing: Fix some section mismatch warnings

2013-03-15 00:34:54 -04:00

trace_functions_graph.c

tracing: Add ref_data to function and fgraph tracer structs

2013-07-18 21:31:31 -04:00

trace_functions.c

tracing: Add ref_data to function and fgraph tracer structs

2013-07-18 21:31:31 -04:00

trace_irqsoff.c

tracing: Use flag buffer_disabled for irqsoff tracer

2013-07-01 20:34:28 -04:00

trace_kdb.c

tracing: Consolidate max_tr into main trace_array structure

2013-03-15 00:35:40 -04:00

trace_kprobe.c

tracing/kprobe: Wait for disabling all running kprobe handlers

2013-07-18 21:31:29 -04:00

trace_mmiotrace.c

tracing: Use trace_seq_puts()/trace_seq_putc() where possible

2013-07-18 21:30:36 -04:00

trace_nop.c

…

trace_output.c

tracing: Use trace_seq_puts()/trace_seq_putc() where possible

2013-07-18 21:30:36 -04:00

trace_output.h

tracing: Rename trace_event_mutex to trace_event_sem

2013-03-15 13:22:10 -04:00

trace_printk.c

…

trace_probe.c

tracing: Replace strict_strto* with kstrto*

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

trace_probe.h

uprobes/tracing: Introduce is_trace_uprobe_enabled()

2013-02-08 18:24:30 +01:00

trace_sched_switch.c

tracing: Consolidate max_tr into main trace_array structure

2013-03-15 00:35:40 -04:00

trace_sched_wakeup.c

tracing: Add function-trace option to disable function tracing of latency tracers

2013-03-15 00:36:08 -04:00

trace_selftest_dynamic.c

…

trace_selftest.c

ftrace: Do not run selftest if command line parameter is set

2013-07-01 20:57:15 -04:00

trace_stack.c

Merge tag 'trace-3.10' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2013-04-29 13:55:38 -07:00

trace_stat.c

tracing: Check return value of tracing_init_dentry()

2013-04-12 23:02:32 -04:00

trace_stat.h

…

trace_syscalls.c

tracing/perf: Move the PERF_MAX_TRACE_SIZE check into perf_trace_buf_prepare()

2013-07-18 21:31:28 -04:00

trace_uprobe.c

tracing/perf: Move the PERF_MAX_TRACE_SIZE check into perf_trace_buf_prepare()

2013-07-18 21:31:28 -04:00

trace.c

tracing: Miscellaneous fixes for trace_array ref counting

2013-07-18 21:31:30 -04:00

trace.h

tracing: Add ref_data to function and fgraph tracer structs

2013-07-18 21:31:31 -04:00