Joel Fernandes
d914ba37d7
tracing: Add support for recording tgid of tasks ...
Inorder to support recording of tgid, the following changes are made:
* Introduce a new API (tracing_record_taskinfo) to additionally record the tgid
along with the task's comm at the same time. This has has the benefit of not
setting trace_cmdline_save before all the information for a task is saved.
* Add a new API tracing_record_taskinfo_sched_switch to record task information
for 2 tasks at a time (previous and next) and use it from sched_switch probe.
* Preserve the old API (tracing_record_cmdline) and create it as a wrapper
around the new one so that existing callers aren't affected.
* Reuse the existing sched_switch and sched_wakeup probes to record tgid
information and add a new option 'record-tgid' to enable recording of tgid
When record-tgid option isn't enabled to being with, we take care to make sure
that there's isn't memory or runtime overhead.
Link: http://lkml.kernel.org/r/20170627020155.5139-1-joelaf@google.com
Cc: kernel-team@android.com
Cc: Ingo Molnar <mingo@redhat.com>
Tested-by: Michael Sartain <mikesart@gmail.com>
Signed-off-by: Joel Fernandes <joelaf@google.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2017-06-27 13:30:28 -04:00
blktrace: fix integer parse
2017-05-19 09:21:15 -06:00
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next
2017-05-02 16:40:27 -07:00
ftrace: Decrement count for dyn_ftrace_total_info file
2017-06-27 13:30:27 -04:00
tracing: Rename update the enum_map file
2017-06-13 17:13:06 -04:00
perf/core: Rename CONFIG_[UK]PROBE_EVENT to CONFIG_[UK]PROBE_EVENTS
2017-03-01 10:26:39 +01:00
New features for this release:
2017-05-03 18:41:21 -07:00
ring-buffer: Return reader page back into existing ring buffer
2017-05-01 10:26:40 -04:00
tracing: Add support for recording tgid of tasks
2017-06-27 13:30:28 -04:00
tracing: Add support for recording tgid of tasks
2017-06-27 13:30:28 -04:00
tracing: Have the trace_event benchmark thread call cond_resched_rcu_qs()
2017-04-17 15:21:19 -04:00
tracing: Have the reg function allow to fail
2016-12-09 09:13:30 -05:00
tracing: Add the constant count for branch tracer
2017-01-19 08:57:41 -05:00
sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h>
2017-03-02 08:42:27 +01:00
trace: make trace_hwlat timestamp y2038 safe
2017-05-08 17:15:15 -07:00
tracing: Add support for recording tgid of tasks
2017-06-27 13:30:28 -04:00
tracing/filter: Define op as the enum that it is
2016-11-14 16:42:59 -05:00
sched/headers: Prepare to use <linux/rcuupdate.h> instead of <linux/rculist.h> in <linux/sched.h>
2017-03-02 08:42:38 +01:00
sched/headers: Prepare to use <linux/rcuupdate.h> instead of <linux/rculist.h> in <linux/sched.h>
2017-03-02 08:42:38 +01:00
tracing/ftrace: Allow for instances to trigger their own stacktrace probes
2017-04-20 22:06:49 -04:00
tracing/fgraph: Have wakeup and irqsoff tracers ignore graph functions too
2016-12-09 09:21:35 -05:00
trace: make trace_hwlat timestamp y2038 safe
2017-05-08 17:15:15 -07:00
clocksource: Use a plain u64 instead of cycle_t
2016-12-25 11:04:12 +01:00
tracing/kprobes: Enforce kprobes teardown after testing
2017-05-17 21:50:27 -04:00
tracing: Show address when function names are not found
2017-06-22 17:10:06 -04:00
tracing/probes: Fix a warning message to show correct maximum length
2017-02-15 10:32:48 -05:00
perf/core: Rename CONFIG_[UK]PROBE_EVENT to CONFIG_[UK]PROBE_EVENTS
2017-03-01 10:26:39 +01:00
tracing: Add support for recording tgid of tasks
2017-06-27 13:30:28 -04:00
clocksource: Use a plain u64 instead of cycle_t
2016-12-25 11:04:12 +01:00
sched/headers: Prepare for new header dependencies before moving code to <uapi/linux/sched/types.h>
2017-03-02 08:42:27 +01:00
rcu/tracing: Add rcu_disabled to denote when rcu_irq_enter() will not work
2017-04-10 15:22:03 -04:00
tracing/syscalls: fix multiline in error message text
2016-09-29 10:25:23 +02:00
sched/headers: Prepare to use <linux/rcuupdate.h> instead of <linux/rculist.h> in <linux/sched.h>
2017-03-02 08:42:38 +01:00
d914ba37d7