Joel Fernandes 216df8d4d2 trace: Limit maximum allowed buffer size ...

In the 4.4 kernel, its possible that allocating large buffers without
__GFP_NORETRY causes us to be stuck for long periods of time. I don't
get this behavior upstream when using the GFP_RETRY_MAYFAIL flag which
is the right way to prevent this but isn't possible to use in 4.4 due to
missing dependencies.

As a workaround for this, lets limit the total buffer size per-CPU to
200MB which on walleye is more than sufficient.

Test:
(1)
walleye:/data # echo 18014398509481980 > /d/tracing/buffer_size_kb
1|walleye:/data # echo $?
1

(2) Start camera recording and also other apps in the background, and
run without issues: echo 200000 > /d/tracing/buffer_size_kb

Bug: 63664347

Change-Id: I12cdea17eb7c46af315b91007967510da188e3f2
Signed-off-by: Joel Fernandes <joelaf@google.com>

2017-07-22 00:04:32 +00:00

..

blktrace.c

fixup! block/fs: keep track of the task that dirtied the page

2016-03-23 20:57:46 -07:00

bpf_trace.c

bpf: make tracing helpers gpl only

2015-10-26 21:53:34 -07:00

ftrace.c

Merge tag 'trace-v4.4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace

2015-11-06 13:30:20 -08:00

gpu-traces.c

trace/events: add gpu trace events

2016-02-16 13:53:26 -08:00

ipc_logging_debug.c

trace: Add snapshot of ipc_logging driver

2016-03-22 11:07:56 -07:00

ipc_logging_private.h

trace: ipc_logging: Increase maximum size of logging context name

2016-03-23 21:15:11 -07:00

ipc_logging.c

trace: ipc_logging: Avoid buffer overflow in ipc_log_string()

2017-03-30 17:34:50 -07:00

Kconfig

UPSTREAM: tracing: Add support for critical section event tracing

2017-04-19 07:12:50 +00:00

Makefile

Merge branch 'android-msm-8998-4.4' into android-msm-8998-4.4-common

2017-04-07 09:56:07 -07:00

msm_rtb.c

msm: rtb: record counter timestamp for every log record

2016-12-21 14:03:02 +05:30

power-traces.c

core_ctl_helper: Remove code since it is not used anymore.

2016-09-28 20:42:49 -07:00

ring_buffer_benchmark.c

ring_buffer: Remove unneeded smp_wmb() before wakeup of reader benchmark

2015-11-03 16:19:02 -05:00

ring_buffer.c

ANDROID: tracing/ring_buffer: Try harder to allocate

2017-07-07 17:35:32 +00:00

rpm-traces.c

…

trace_benchmark.c

tracing: Only benchmark the time tracepoints take if tracing is on

2015-11-02 13:34:58 -05:00

trace_benchmark.h

…

trace_branch.c

tracing: Remove {start,stop}_branch_trace

2015-10-21 10:10:09 -04:00

trace_clock.c

tracing: Export tracing clock functions

2015-05-12 15:56:57 -04:00

trace_entries.h

tracing: %pF is only for function pointers

2015-03-25 08:57:22 -04:00

trace_event_perf.c

trace: prevent NULL pointer dereference

2016-05-25 14:21:54 -07:00

trace_events_filter_test.h

…

trace_events_filter.c

tracing: Do not have 'comm' filter override event 'comm' field

2016-03-09 15:34:52 -08:00

trace_events_trigger.c

tracing: Rename ftrace_raw_##call event structures to trace_event_raw_##call

2015-05-13 21:48:40 -04:00

trace_events.c

Merge remote-tracking branch 'msm-4.4/tmp-510d0a3f' into msm-4.4

2016-10-21 18:00:55 -07:00

trace_export.c

tracing: ftrace_event_is_function() can return boolean

2015-11-02 14:28:05 -05:00

trace_functions_graph.c

Merge branch 'android-msm-8998-4.4-common' into android-msm-wahoo-4.4

2017-04-07 12:27:45 -07:00

trace_functions.c

…

trace_irqsoff.c

UPSTREAM: tracing: Add support for critical section event tracing

2017-04-19 07:12:50 +00:00

trace_kdb.c

tracing: Move trace_flags from global to a trace_array field

2015-09-30 15:22:55 -04:00

trace_kprobe.c

lib: introduce strncpy_from_unsafe()

2015-08-28 16:27:27 -07:00

trace_mmiotrace.c

tracing: Pass trace_array into trace_buffer_unlock_commit()

2015-09-25 17:38:44 -04:00

trace_nop.c

tracing: Remove unneeded includes of debugfs.h and fs.h

2015-01-22 11:19:48 -05:00

trace_output.c

trace: fix compilation for 4.1

2016-02-16 13:53:29 -08:00

trace_output.h

tracing: Turn seq_print_user_ip() into a static function

2015-09-28 10:16:12 -04:00

trace_printk.c

tracing: Handle NULL formats in hold_module_trace_bprintk_format()

2016-07-27 09:47:32 -07:00

trace_probe.c

trace: Don't use __weak in header files

2015-03-25 08:57:23 -04:00

trace_probe.h

kernel/trace_probe: is_good_name can be boolean

2015-09-22 13:11:30 -04:00

trace_sched_switch.c

sched/core: Fix trace_sched_switch()

2015-10-06 17:08:15 +02:00

trace_sched_wakeup.c

Merge android-msm-8998-4.4-common into android-msm-muskie-4.4

2017-01-11 22:31:42 -08:00

trace_selftest_dynamic.c

…

trace_selftest.c

…

trace_seq.c

tracing: use %*pb[l] to print bitmaps including cpumasks and nodemasks

2015-02-13 21:21:37 -08:00

trace_stack.c

tracing/stacktrace: Show entire trace if passed in function not found

2016-02-17 12:30:57 -08:00

trace_stat.c

tracing: Convert the tracing facility over to use tracefs

2015-02-03 12:48:41 -05:00

trace_stat.h

…

trace_syscalls.c

coresight: enable stm logging for trace events, marker and printk

2016-05-24 14:15:31 -07:00

trace_uprobe.c

coresight: enable stm logging for trace events, marker and printk

2016-05-24 14:15:31 -07:00

trace.c

trace: Limit maximum allowed buffer size

2017-07-22 00:04:32 +00:00

trace.h

trace: Add an option to show tgids in trace output

2016-02-16 13:53:27 -08:00