forked from Minki/linux
4fbb48cb11
When registering a function callback for the function tracer, the ops can specify if it wants to save full regs (like an interrupt would) for each function that it traces, or if it does not care about regs and just wants to have the fastest return possible. Once a ops has registered a function, if other ops register that function they all will receive the regs too. That's because it does the work once, it does it for everyone. Now if the ops wanting regs unregisters the function so that there's only ops left that do not care about regs, those ops will still continue getting regs and going through the work for it on that function. This is because the disabling of the rec counter only sees the ops registered, and does not see the ops that are still attached, and does not know if the current ops that are still attached want regs or not. To play it safe, it just keeps regs being processed until no function is registered anymore. Instead of doing that, check the ops that are still registered for that function and if none want regs for it anymore, then disable the processing of regs. Signed-off-by: Steven Rostedt <rostedt@goodmis.org> |
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| .. | ||
| blktrace.c | ||
| ftrace.c | ||
| Kconfig | ||
| Makefile | ||
| power-traces.c | ||
| ring_buffer_benchmark.c | ||
| ring_buffer.c | ||
| rpm-traces.c | ||
| trace_benchmark.c | ||
| trace_benchmark.h | ||
| trace_branch.c | ||
| trace_clock.c | ||
| trace_entries.h | ||
| trace_event_perf.c | ||
| trace_events_filter_test.h | ||
| trace_events_filter.c | ||
| trace_events_trigger.c | ||
| trace_events.c | ||
| trace_export.c | ||
| trace_functions_graph.c | ||
| trace_functions.c | ||
| trace_irqsoff.c | ||
| trace_kdb.c | ||
| trace_kprobe.c | ||
| trace_mmiotrace.c | ||
| trace_nop.c | ||
| trace_output.c | ||
| trace_output.h | ||
| trace_printk.c | ||
| trace_probe.c | ||
| trace_probe.h | ||
| trace_sched_switch.c | ||
| trace_sched_wakeup.c | ||
| trace_selftest_dynamic.c | ||
| trace_selftest.c | ||
| trace_stack.c | ||
| trace_stat.c | ||
| trace_stat.h | ||
| trace_syscalls.c | ||
| trace_uprobe.c | ||
| trace.c | ||
| trace.h | ||