From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>
Subject: [for-next][PATCH 05/21] ftrace: Add trampolines to enabled_functions debug file
Date: Thu, 03 Jul 2014 12:05:08 -0400 [thread overview]
Message-ID: <20140703161224.224000289@goodmis.org> (raw)
In-Reply-To: 20140703160503.006976702@goodmis.org
[-- Attachment #1: 0005-ftrace-Add-trampolines-to-enabled_functions-debug-fi.patch --]
[-- Type: text/plain, Size: 1205 bytes --]
From: "Steven Rostedt (Red Hat)" <rostedt@goodmis.org>
The enabled_functions is used to help debug the dynamic function tracing.
Adding what trampolines are attached to files is useful for debugging.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
---
kernel/trace/ftrace.c | 16 ++++++++++++++--
1 file changed, 14 insertions(+), 2 deletions(-)
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 5d15eb8146a7..3ded796e10e0 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -2903,10 +2903,22 @@ static int t_show(struct seq_file *m, void *v)
return 0;
seq_printf(m, "%ps", (void *)rec->ip);
- if (iter->flags & FTRACE_ITER_ENABLED)
+ if (iter->flags & FTRACE_ITER_ENABLED) {
seq_printf(m, " (%ld)%s",
ftrace_rec_count(rec),
- rec->flags & FTRACE_FL_REGS ? " R" : "");
+ rec->flags & FTRACE_FL_REGS ? " R" : " ");
+ if (rec->flags & FTRACE_FL_TRAMP_EN) {
+ struct ftrace_ops *ops;
+
+ ops = ftrace_find_tramp_ops_curr(rec);
+ if (ops && ops->trampoline)
+ seq_printf(m, "\ttramp: %pS",
+ (void *)ops->trampoline);
+ else
+ seq_printf(m, "\ttramp: ERROR!");
+ }
+ }
+
seq_printf(m, "\n");
return 0;
--
2.0.0
next prev parent reply other threads:[~2014-07-03 16:12 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-07-03 16:05 [for-next][PATCH 00/21] tracing: Updates for 3.17 Steven Rostedt
2014-07-03 16:05 ` [for-next][PATCH 01/21] ftrace: Allow no regs if no more callbacks require it Steven Rostedt
2014-07-03 16:05 ` [for-next][PATCH 02/21] ftrace: Use macros for numbers in ftrace rec shift bits Steven Rostedt
2014-07-03 16:05 ` [for-next][PATCH 03/21] ftrace: Add ftrace_rec_counter() macro to simplify the code Steven Rostedt
2014-07-03 16:05 ` [for-next][PATCH 04/21] ftrace: Optimize function graph to be called directly Steven Rostedt
2014-07-10 17:45 ` Tuomas Tynkkynen
2014-07-10 18:01 ` Steven Rostedt
2014-07-12 3:36 ` Steven Rostedt
2014-07-12 3:37 ` Steven Rostedt
2014-07-14 13:46 ` Tuomas Tynkkynen
2014-07-14 16:14 ` Steven Rostedt
2014-07-03 16:05 ` Steven Rostedt [this message]
2014-07-03 16:05 ` [for-next][PATCH 06/21] tracing: Change trace event sample to use strlcpy instead of strncpy Steven Rostedt
2014-07-03 16:05 ` [for-next][PATCH 07/21] ftrace: Simplify ftrace_hash_disable/enable path in ftrace_hash_move Steven Rostedt
2014-07-03 16:05 ` [for-next][PATCH 08/21] tracing: Move the trace_seq_* functions into its own trace_seq.c file Steven Rostedt
2014-07-03 16:05 ` [for-next][PATCH 09/21] tracing: Clean up trace_seq.c Steven Rostedt
2014-07-03 16:05 ` [for-next][PATCH 10/21] tracing: Make trace_seq_putmem_hex() more robust Steven Rostedt
2014-07-03 16:05 ` [for-next][PATCH 11/21] tracing: Remove trace_seq_reserve() Steven Rostedt
2014-07-03 16:05 ` [for-next][PATCH 12/21] tracing: Remove unnecessary null test before debugfs_remove() Steven Rostedt
2014-07-03 16:05 ` [for-next][PATCH 13/21] tracing: Add trace_seq_buffer_ptr() helper function Steven Rostedt
2014-07-03 16:05 ` [for-next][PATCH 14/21] ftrace: Get rid of obsolete global_start_up variable Steven Rostedt
2014-07-03 16:05 ` [for-next][PATCH 15/21] ftrace: Fix memory leak on failure path in ftrace_allocate_pages() Steven Rostedt
2014-07-03 16:05 ` [for-next][PATCH 16/21] ftrace: Do not copy hash if O_TRUNC is set Steven Rostedt
2014-07-03 16:05 ` [for-next][PATCH 17/21] tracing: Convert pr_warning() to pr_warn() in trace_events.c Steven Rostedt
2014-07-03 16:05 ` [for-next][PATCH 18/21] tracing: Add ftrace_graph_notrace boot parameter Steven Rostedt
2014-07-03 16:05 ` [for-next][PATCH 19/21] tracing: Improve message of empty set_graph_notrace file Steven Rostedt
2014-07-03 16:05 ` [for-next][PATCH 20/21] tracing: Improve message of empty set_ftrace_notrace file Steven Rostedt
2014-07-03 16:05 ` [for-next][PATCH 21/21] tracing: Add description of set_graph_notrace to tracing/README Steven Rostedt
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