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
..
Kconfig	tracing: Rename update the enum_map file	2017-06-13 17:13:06 -04:00
Makefile	perf/core: Rename CONFIG_[UK]PROBE_EVENT to CONFIG_[UK]PROBE_EVENTS	2017-03-01 10:26:39 +01:00
blktrace.c	blktrace: fix integer parse	2017-05-19 09:21:15 -06:00
bpf_trace.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2017-05-02 16:40:27 -07:00
ftrace.c	ftrace: Decrement count for dyn_ftrace_total_info file	2017-06-27 13:30:27 -04:00
power-traces.c	cpufreq: schedutil: New governor based on scheduler utilization data	2016-04-02 01:09:12 +02:00
ring_buffer.c	New features for this release:	2017-05-03 18:41:21 -07:00
ring_buffer_benchmark.c	ring-buffer: Return reader page back into existing ring buffer	2017-05-01 10:26:40 -04:00
rpm-traces.c	PM / Runtime: Introduce trace points for tracing rpm_* functions	2011-09-27 22:53:27 +02:00
trace.c	tracing: Add support for recording tgid of tasks	2017-06-27 13:30:28 -04:00
trace.h	tracing: Add support for recording tgid of tasks	2017-06-27 13:30:28 -04:00
trace_benchmark.c	tracing: Have the trace_event benchmark thread call cond_resched_rcu_qs()	2017-04-17 15:21:19 -04:00
trace_benchmark.h	tracing: Have the reg function allow to fail	2016-12-09 09:13:30 -05:00
trace_branch.c	tracing: Add the constant count for branch tracer	2017-01-19 08:57:41 -05:00
trace_clock.c	sched/headers: Prepare for new header dependencies before moving code to <linux/sched/clock.h>	2017-03-02 08:42:27 +01:00
trace_entries.h	trace: make trace_hwlat timestamp y2038 safe	2017-05-08 17:15:15 -07:00
trace_event_perf.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next	2016-05-17 16:26:30 -07:00
trace_events.c	tracing: Add support for recording tgid of tasks	2017-06-27 13:30:28 -04:00
trace_events_filter.c	tracing/filter: Define op as the enum that it is	2016-11-14 16:42:59 -05:00
trace_events_filter_test.h	tracing/filter: Add startup tests for events filter	2011-08-19 14:35:59 -04:00
trace_events_hist.c	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
trace_events_trigger.c	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
trace_export.c	tracing: ftrace_event_is_function() can return boolean	2015-11-02 14:28:05 -05:00
trace_functions.c	tracing/ftrace: Allow for instances to trigger their own stacktrace probes	2017-04-20 22:06:49 -04:00
trace_functions_graph.c	tracing/fgraph: Have wakeup and irqsoff tracers ignore graph functions too	2016-12-09 09:21:35 -05:00
trace_hwlat.c	trace: make trace_hwlat timestamp y2038 safe	2017-05-08 17:15:15 -07:00
trace_irqsoff.c	clocksource: Use a plain u64 instead of cycle_t	2016-12-25 11:04:12 +01:00
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	tracing/kprobes: Enforce kprobes teardown after testing	2017-05-17 21:50:27 -04:00
trace_mmiotrace.c	tracing: Expose CPU physical addresses (resource values) for PCI devices	2016-06-20 09:54:22 -04:00
trace_nop.c	tracing: Fix typoes in code comment and printk in trace_nop.c	2016-03-08 11:23:57 -05:00
trace_output.c	tracing: Show address when function names are not found	2017-06-22 17:10:06 -04:00
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()	2016-06-20 09:46:12 -04:00
trace_probe.c	tracing/probes: Fix a warning message to show correct maximum length	2017-02-15 10:32:48 -05:00
trace_probe.h	perf/core: Rename CONFIG_[UK]PROBE_EVENT to CONFIG_[UK]PROBE_EVENTS	2017-03-01 10:26:39 +01:00
trace_sched_switch.c	tracing: Add support for recording tgid of tasks	2017-06-27 13:30:28 -04:00
trace_sched_wakeup.c	clocksource: Use a plain u64 instead of cycle_t	2016-12-25 11:04:12 +01:00
trace_selftest.c	sched/headers: Prepare for new header dependencies before moving code to <uapi/linux/sched/types.h>	2017-03-02 08:42:27 +01:00
trace_selftest_dynamic.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	rcu/tracing: Add rcu_disabled to denote when rcu_irq_enter() will not work	2017-04-10 15:22:03 -04:00
trace_stat.c	kernel/...: convert pr_warning to pr_warn	2016-03-22 15:36:02 -07:00
trace_stat.h	…
trace_syscalls.c	tracing/syscalls: fix multiline in error message text	2016-09-29 10:25:23 +02:00
trace_uprobe.c	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_map.c	tracing: Handle tracing_map_alloc_elts() error path correctly	2016-04-26 09:40:30 -04:00
tracing_map.h	tracing: Update some tracing_map constants and comments	2016-04-19 12:16:06 -04:00