Steven Rostedt (VMware)
c03d235980
ftrace: Add comment to why rcu_dereference_sched() is open coded ...
[ Upstream commit 16052dd5bdfa16dbe18d8c1d4cde2ddab9d23177 ]
Because the function graph tracer can execute in sections where RCU is not
"watching", the rcu_dereference_sched() for the has needs to be open coded.
This is fine because the RCU "flavor" of the ftrace hash is protected by
its own RCU handling (it does its own little synchronization on every CPU
and does not rely on RCU sched).
Acked-by: Joel Fernandes (Google) <joel@joelfernandes.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-02-11 04:34:04 -08:00
for-4.19/post-20180822
2018-08-22 13:38:05 -07:00
bpf: fix nested bpf tracepoints with per-cpu data
2019-07-03 13:14:48 +02:00
tracing: Annotate ftrace_graph_notrace_hash pointer with __rcu
2020-02-11 04:34:04 -08:00
Masami found an off by one bug in the code that keeps "notrace" functions
2018-08-23 13:07:00 -07:00
tracing: Allow gcov profiling on only ftrace subsystem
2018-08-21 09:11:49 -04:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
tracing: Use trace_clock_local() for looping in preemptirq_delay_test.c
2018-10-17 15:35:33 -04:00
trace: Fix preempt_enable_no_resched() abuse
2019-05-02 09:58:54 +02:00
tracing: Add SPDX License format tags to tracing files
2018-08-16 19:08:06 -04:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
tracing: Fix lock inversion in trace_event_enable_tgid_record()
2020-01-09 10:19:02 +01:00
ftrace: Add comment to why rcu_dereference_sched() is open coded
2020-02-11 04:34:04 -08:00
rcu: Rename cond_resched_rcu_qs() to cond_resched_tasks_rcu_qs()
2018-05-15 10:27:29 -07:00
tracing: Fix SPDX format headers to use C++ style comments
2018-08-16 19:08:06 -04:00
Revert "x86/uaccess, ftrace: Fix ftrace_likely_update() vs. SMAP"
2019-07-03 13:14:41 +02:00
tracing: Add SPDX License format tags to tracing files
2018-08-16 19:08:06 -04:00
tracing: Fix SPDX format headers to use C++ style comments
2018-08-16 19:08:06 -04:00
tracing: Fix race in perf_trace_buf initialization
2019-10-29 09:20:03 +01:00
tracing: Fix lock inversion in trace_event_enable_tgid_record()
2020-01-09 10:19:02 +01:00
tracing: Avoid memory leak in process_system_preds()
2020-01-09 10:19:02 +01:00
tracing: Fix SPDX format headers to use C++ style comments
2018-08-16 19:08:06 -04:00
tracing: Fix histogram code when expression has same var as value
2020-01-29 16:43:23 +01:00
tracing: trigger: Replace unneeded RCU-list traversals
2020-01-29 16:43:18 +01:00
tracing: Add trigger file for trace_markers tracefs/ftrace/print
2018-05-29 08:28:53 -04:00
tracing: Update stack trace skipping for ORC unwinder
2018-01-23 15:57:00 -05:00
tracing/fgraph: Fix set_graph_function from showing interrupts
2018-12-08 12:59:07 +01:00
tracing/hwlat: Don't ignore outer-loop duration when calculating max_latency
2019-10-17 13:45:39 -07:00
tracing/fgraph: Fix set_graph_function from showing interrupts
2018-12-08 12:59:07 +01:00
tracing: Silence GCC 9 array bounds warning
2019-06-25 11:35:52 +08:00
tracing/kprobe: Check whether the non-suffixed symbol is notrace
2019-12-31 16:36:02 +01:00
selftest/ftrace: Move kprobe selftest function to separate compile unit
2018-07-30 18:41:04 -04:00
tracing: Fix SPDX format headers to use C++ style comments
2018-08-16 19:08:06 -04:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
tracing: Add SPDX License format tags to tracing files
2018-08-16 19:08:06 -04:00
tracing: Fix SPDX format headers to use C++ style comments
2018-08-16 19:08:06 -04:00
tracing: More reverting of "tracing: Centralize preemptirq tracepoints and unify their usage"
2018-08-10 15:12:00 -04:00
tracing: Add SPDX License format tags to tracing files
2018-08-16 19:08:06 -04:00
tracing: Add SPDX License format tags to tracing files
2018-08-16 19:08:06 -04:00
tracing: Add SPDX License format tags to tracing files
2018-08-16 19:08:06 -04:00
tracing: Fix sched switch start/stop refcount racy updates
2020-02-11 04:33:55 -08:00
kernel/trace: Fix do not unregister tracepoints when register sched_migrate_task fail
2020-01-14 20:06:59 +01:00
Tracing updates for 4.15:
2017-11-17 14:58:01 -08:00
ftrace: Mark function tracer test functions noinline/noclone
2018-01-23 15:57:29 -05:00
tracing: Add SPDX License format tags to tracing files
2018-08-16 19:08:06 -04:00
tracing: Have stack tracer compile when MCOUNT_INSN_SIZE is not defined
2020-01-14 20:06:59 +01:00
License cleanup: add SPDX GPL-2.0 license identifier to files with no license
2017-11-02 11:10:55 +01:00
tracing: Fix SPDX format headers to use C++ style comments
2018-08-16 19:08:06 -04:00
Tracing updates for 4.15:
2017-11-17 14:58:01 -08:00
tracing/uprobes: Fix output for multiple string arguments
2019-02-20 10:25:48 +01:00
tracing: Have the histogram compare functions convert to u64 first
2020-01-09 10:19:02 +01:00
tracing: Fix SPDX format headers to use C++ style comments
2018-08-16 19:08:06 -04:00
c03d235980