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linux/kernel/trace
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Marcin Nowakowski d4d7ccc834 kprobes/trace: Fix kprobe selftest for newer gcc 
Commit 265a5b7ee3 ("kprobes/trace: Fix kprobe selftest for gcc 4.6")
has added __used attribute to kprobe_trace_selftest_target to ensure
that the method is listed in kallsyms table.

However, even though the method remains in the kernel image, the actual
call is optimized away as there are no side effects and the return value
is never checked.

Add a return value check and a 'noinline' attribute to ensure that an
inlined copy of the method is not used by the caller. Also add checks
that verify that the kprobe was really hit, as at the moment the tests
show positive results despite the test method being optimized away.

Finally, add __init annotations to find_trace_probe_file() and
kprobe_trace_selftest_target() as they are only called from within an
__init method.

Link: http://lkml.kernel.org/r/1481293178-3128-2-git-send-email-marcin.nowakowski@imgtec.com

Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Marcin Nowakowski <marcin.nowakowski@imgtec.com>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
2016-12-12 21:21:43 -05:00
..
blktrace.c block: Fix secure erase 2016-08-16 09:16:51 -06:00
bpf_trace.c bpf: add BPF_CALL_x macros for declaring helpers 2016-09-09 19:36:04 -07:00
ftrace.c ftrace: Support full glob matching 2016-11-14 16:42:58 -05:00
Kconfig ftrace: Support full glob matching 2016-11-14 16:42:58 -05:00
Makefile Disable the __builtin_return_address() warning globally after all 2016-10-12 10:23:41 -07:00
power-traces.c cpufreq: schedutil: New governor based on scheduler utilization data 2016-04-02 01:09:12 +02:00
ring_buffer.c tracing/rb: Init the CPU mask on allocation 2016-12-12 17:57:26 -05:00
ring_buffer_benchmark.c ring_buffer: Remove unneeded smp_wmb() before wakeup of reader benchmark 2015-11-03 16:19:02 -05:00
rpm-traces.c PM / Runtime: Introduce trace points for tracing rpm_* functions 2011-09-27 22:53:27 +02:00
trace.c tracing: Use SOFTIRQ_OFFSET for softirq dectection for more accurate results 2016-12-12 13:51:02 -05:00
trace.h tracing/fgraph: Have wakeup and irqsoff tracers ignore graph functions too 2016-12-09 09:21:35 -05:00
trace_benchmark.c tracing: Allow benchmark to be enabled at early_initcall() 2016-12-09 09:16:15 -05:00
trace_benchmark.h tracing: Have the reg function allow to fail 2016-12-09 09:13:30 -05:00
trace_branch.c tracing: Make __buffer_unlock_commit() always_inline 2016-11-23 20:30:51 -05:00
trace_clock.c tracing: Export tracing clock functions 2015-05-12 15:56:57 -04:00
trace_entries.h tracing: Add new trace_marker_raw 2016-11-15 15:13:59 -05:00
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: Have system enable return error if one of the events fail 2016-12-09 09:15:41 -05:00
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 tracing: Fix use-after-free in hist_register_trigger() 2016-08-02 15:16:30 -04:00
trace_events_trigger.c tracing: Call traceoff trigger after event is recorded 2016-09-23 09:47:59 -04:00
trace_export.c tracing: ftrace_event_is_function() can return boolean 2015-11-02 14:28:05 -05:00
trace_functions.c ftrace: Have set_ftrace_pid use the bitmap like events do 2016-06-20 09:54:19 -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 tracing: Make __buffer_unlock_commit() always_inline 2016-11-23 20:30:51 -05:00
trace_irqsoff.c tracing/fgraph: Have wakeup and irqsoff tracers ignore graph functions too 2016-12-09 09:21:35 -05:00
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 kprobes/trace: Fix kprobe selftest for newer gcc 2016-12-12 21:21:43 -05:00
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: Add new trace_marker_raw 2016-11-15 15:13:59 -05:00
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 ftrace: kprobe: uprobe: Show u8/u16/u32/u64 types in decimal 2016-08-23 17:06:38 -03:00
trace_probe.h ftrace: kprobe: uprobe: Show u8/u16/u32/u64 types in decimal 2016-08-23 17:06:38 -03:00
trace_sched_switch.c sched/core: Fix trace_sched_switch() 2015-10-06 17:08:15 +02:00
trace_sched_wakeup.c tracing/fgraph: Have wakeup and irqsoff tracers ignore graph functions too 2016-12-09 09:21:35 -05:00
trace_selftest.c Seems that Peter Zijlstra added a new check that is making old 2014-10-12 07:28:55 -04:00
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 tracing, kasan: Silence Kasan warning in check_stack of stack_tracer 2016-02-19 12:36:44 -05:00
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 This release cycle is rather small. Just a few fixes to tracing. 2016-10-06 11:48:41 -07:00
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