Steven Rostedt (VMware) 02a474ca26 ftrace/x86: Allow for arguments to be passed in to ftrace_regs by default ... Currently, the only way to get access to the registers of a function via a ftrace callback is to set the "FL_SAVE_REGS" bit in the ftrace_ops. But as this saves all regs as if a breakpoint were to trigger (for use with kprobes), it is expensive. The regs are already saved on the stack for the default ftrace callbacks, as that is required otherwise a function being traced will get the wrong arguments and possibly crash. And on x86, the arguments are already stored where they would be on a pt_regs structure to use that code for both the regs version of a callback, it makes sense to pass that information always to all functions. If an architecture does this (as x86_64 now does), it is to set HAVE_DYNAMIC_FTRACE_WITH_ARGS, and this will let the generic code that it could have access to arguments without having to set the flags. This also includes having the stack pointer being saved, which could be used for accessing arguments on the stack, as well as having the function graph tracer not require its own trampoline! Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>		2020-11-13 12:14:59 -05:00
..
blktrace.c	tracing: Fix some typos in comments	2020-11-10 20:39:40 -05:00
bpf_trace.c	tracing: Fix some typos in comments	2020-11-10 20:39:40 -05:00
bpf_trace.h	bpf: Use dedicated bpf_trace_printk event instead of trace_printk()	2020-07-13 16:55:49 -07:00
fgraph.c	ftrace: Reverse what the RECURSION flag means in the ftrace_ops	2020-11-06 08:42:12 -05:00
ftrace_internal.h	x86/ftrace: Have ftrace trampolines turn read-only at the end of system boot up	2020-05-12 18:24:34 -04:00
ftrace.c	ftrace: Have the callbacks receive a struct ftrace_regs instead of pt_regs	2020-11-13 12:14:55 -05:00
Kconfig	ftrace/x86: Allow for arguments to be passed in to ftrace_regs by default	2020-11-13 12:14:59 -05:00
kprobe_event_gen_test.c	tracing: Add kprobe event command generation test module	2020-01-30 09:46:28 -05:00
Makefile	ftrace: Add recording of functions that caused recursion	2020-11-06 08:42:26 -05:00
power-traces.c
preemptirq_delay_test.c	tracing: Wait for preempt irq delay thread to execute	2020-05-11 17:00:34 -04:00
ring_buffer_benchmark.c	sched,tracing: Convert to sched_set_fifo()	2020-07-29 11:43:53 +02:00
ring_buffer.c	ring-buffer: Add recording of ring buffer recursion into recursed_functions	2020-11-10 20:39:40 -05:00
rpm-traces.c
synth_event_gen_test.c	tracing: Add support for dynamic strings to synthetic events	2020-10-05 19:32:18 -04:00
trace_benchmark.c	tracing: Fix some typos in comments	2020-11-10 20:39:40 -05:00
trace_benchmark.h
trace_boot.c	tracing/boot: Add ftrace.instance.*.alloc_snapshot option	2020-10-15 12:01:13 -04:00
trace_branch.c	tracing: Make struct ring_buffer less ambiguous	2020-01-13 13:19:38 -05:00
trace_clock.c
trace_dynevent.c	tracing: Fix some typos in comments	2020-11-10 20:39:40 -05:00
trace_dynevent.h	tracing: Fix some typos in comments	2020-11-10 20:39:40 -05:00
trace_entries.h	tracing: Fix some typos in comments	2020-11-10 20:39:40 -05:00
trace_event_perf.c	ftrace: Have the callbacks receive a struct ftrace_regs instead of pt_regs	2020-11-13 12:14:55 -05:00
trace_events_filter_test.h
trace_events_filter.c	tracing: Fix some typos in comments	2020-11-10 20:39:40 -05:00
trace_events_hist.c	tracing: Fix some typos in comments	2020-11-10 20:39:40 -05:00
trace_events_inject.c	tracing: Initialize val to zero in parse_entry of inject code	2020-01-02 19:04:57 -05:00
trace_events_synth.c	tracing: Fix some typos in comments	2020-11-10 20:39:40 -05:00
trace_events_trigger.c	tracing: Fix event trigger to accept redundant spaces	2020-06-23 21:51:40 -04:00
trace_events.c	ftrace: Have the callbacks receive a struct ftrace_regs instead of pt_regs	2020-11-13 12:14:55 -05:00
trace_export.c	tracing: Fix some typos in comments	2020-11-10 20:39:40 -05:00
trace_functions_graph.c	fgraph: Make overruns 4 bytes in graph stack structure	2020-11-10 20:39:36 -05:00
trace_functions.c	ftrace: Have the callbacks receive a struct ftrace_regs instead of pt_regs	2020-11-13 12:14:55 -05:00
trace_hwlat.c	tracing: Fix some typos in comments	2020-11-10 20:39:40 -05:00
trace_irqsoff.c	ftrace: Have the callbacks receive a struct ftrace_regs instead of pt_regs	2020-11-13 12:14:55 -05:00
trace_kdb.c	tracing: Rename trace_buffer to array_buffer	2020-01-13 13:19:38 -05:00
trace_kprobe_selftest.c
trace_kprobe_selftest.h
trace_kprobe.c	kprobes: Use module_name() macro	2020-09-24 15:55:49 +02:00
trace_mmiotrace.c	tracing: Make struct ring_buffer less ambiguous	2020-01-13 13:19:38 -05:00
trace_nop.c
trace_output.c	ftrace: Add recording of functions that caused recursion	2020-11-06 08:42:26 -05:00
trace_output.h	ftrace: Add recording of functions that caused recursion	2020-11-06 08:42:26 -05:00
trace_preemptirq.c	lockdep: fix order in trace_hardirqs_off_caller()	2020-09-14 10:08:07 +02:00
trace_printk.c	Updates for tracing and bootconfig:	2020-10-15 15:51:28 -07:00
trace_probe_tmpl.h	tracing/probe: Support user-space dereference	2019-05-25 23:04:42 -04:00
trace_probe.c	tracing/probe: Fix memleak in fetch_op_data operations	2020-06-16 21:21:02 -04:00
trace_probe.h	tracing: Move is_good_name() from trace_probe.h to trace.h	2020-10-15 12:01:13 -04:00
trace_recursion_record.c	ftrace: Add recording of functions that caused recursion	2020-11-06 08:42:26 -05:00
trace_sched_switch.c	tracing: Fix sched switch start/stop refcount racy updates	2020-01-30 09:46:10 -05:00
trace_sched_wakeup.c	ftrace: Have the callbacks receive a struct ftrace_regs instead of pt_regs	2020-11-13 12:14:55 -05:00
trace_selftest_dynamic.c
trace_selftest.c	ftrace: Have the callbacks receive a struct ftrace_regs instead of pt_regs	2020-11-13 12:14:55 -05:00
trace_seq.c	tracing: Remove unused TRACE_SEQ_BUF_USED	2020-01-21 18:39:54 -05:00
trace_stack.c	ftrace: Have the callbacks receive a struct ftrace_regs instead of pt_regs	2020-11-13 12:14:55 -05:00
trace_stat.c	tracing: make tracing_init_dentry() returns an integer instead of a d_entry pointer	2020-09-18 22:17:14 -04:00
trace_stat.h	tracing: Use generic type for comparator function	2019-11-14 13:15:11 -05:00
trace_synth.h	tracing: Add support for dynamic strings to synthetic events	2020-10-05 19:32:18 -04:00
trace_syscalls.c	Tracing updates:	2020-02-06 07:12:11 +00:00
trace_uprobe.c	tracing/uprobes: Support perf-style return probe	2020-09-21 21:06:03 -04:00
trace.c	tracing: Fix some typos in comments	2020-11-10 20:39:40 -05:00
trace.h	ftrace: Move the recursion testing into global headers	2020-11-06 08:33:23 -05:00
tracing_map.c	tracing: Fix some typos in comments	2020-11-10 20:39:40 -05:00
tracing_map.h	tracing: Fix some typos in comments	2020-11-10 20:39:40 -05:00