From: Steven Rostedt <rostedt@goodmis.org>
To: linux-kernel@vger.kernel.org
Cc: Ingo Molnar <mingo@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
Joel Fernandes <joelaf@google.com>
Subject: [for-next][PATCH 1/4] tracing: Fixup trace file header alignment
Date: Wed, 12 Jul 2017 08:57:09 -0400 [thread overview]
Message-ID: <20170712125725.681003204@goodmis.org> (raw)
In-Reply-To: 20170712125708.904785252@goodmis.org
[-- Attachment #1: 0001-tracing-Fixup-trace-file-header-alignment.patch --]
[-- Type: text/plain, Size: 3864 bytes --]
From: "Steven Rostedt (VMware)" <rostedt@goodmis.org>
The addition of TGID to the tracing header added a check to see if TGID
shoudl be displayed or not, and updated the header accordingly.
Unfortunately, it broke the default header.
Also add constant strings to use for spacing. This does remove the
visibility of the header a bit, but cuts it down from the extended lines
much greater than 80 characters.
Before this change:
# tracer: function
#
# _-----=> irqs-off
# / _----=> need-resched
# | / _---=> hardirq/softirq
# || / _--=> preempt-depth
# ||| / delay
# TASK-PID CPU#|||| TIMESTAMP FUNCTION
# | | | |||| | |
swapper/0-1 [000] .... 0.277830: migration_init <-do_one_initcall
swapper/0-1 [002] d... 13.861967: Unknown type 1201
swapper/0-1 [002] d..1 13.861970: Unknown type 1202
After this change:
# tracer: function
#
# _-----=> irqs-off
# / _----=> need-resched
# | / _---=> hardirq/softirq
# || / _--=> preempt-depth
# ||| / delay
# TASK-PID CPU# |||| TIMESTAMP FUNCTION
# | | | |||| | |
swapper/0-1 [000] .... 0.278245: migration_init <-do_one_initcall
swapper/0-1 [003] d... 13.861189: Unknown type 1201
swapper/0-1 [003] d..1 13.861192: Unknown type 1202
Cc: Joel Fernandes <joelaf@google.com>
Fixes: 441dae8f2f29 ("tracing: Add support for display of tgid in trace output")
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
---
kernel/trace/trace.c | 25 +++++++++++++++++--------
1 file changed, 17 insertions(+), 8 deletions(-)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 92af8fd1429b..dabd810a10cd 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -3358,14 +3358,23 @@ static void print_func_help_header_irq(struct trace_buffer *buf, struct seq_file
unsigned int flags)
{
bool tgid = flags & TRACE_ITER_RECORD_TGID;
-
- seq_printf(m, "# %s _-----=> irqs-off\n", tgid ? " " : "");
- seq_printf(m, "# %s / _----=> need-resched\n", tgid ? " " : "");
- seq_printf(m, "# %s| / _---=> hardirq/softirq\n", tgid ? " " : "");
- seq_printf(m, "# %s|| / _--=> preempt-depth\n", tgid ? " " : "");
- seq_printf(m, "# %s||| / delay\n", tgid ? " " : "");
- seq_printf(m, "# TASK-PID CPU#%s|||| TIMESTAMP FUNCTION\n", tgid ? " TGID " : "");
- seq_printf(m, "# | | | %s|||| | |\n", tgid ? " | " : "");
+ const char tgid_space[] = " ";
+ const char space[] = " ";
+
+ seq_printf(m, "# %s _-----=> irqs-off\n",
+ tgid ? tgid_space : space);
+ seq_printf(m, "# %s / _----=> need-resched\n",
+ tgid ? tgid_space : space);
+ seq_printf(m, "# %s| / _---=> hardirq/softirq\n",
+ tgid ? tgid_space : space);
+ seq_printf(m, "# %s|| / _--=> preempt-depth\n",
+ tgid ? tgid_space : space);
+ seq_printf(m, "# %s||| / delay\n",
+ tgid ? tgid_space : space);
+ seq_printf(m, "# TASK-PID CPU#%s|||| TIMESTAMP FUNCTION\n",
+ tgid ? " TGID " : space);
+ seq_printf(m, "# | | | %s|||| | |\n",
+ tgid ? " | " : space);
}
void
--
2.10.2
next prev parent reply other threads:[~2017-07-12 12:57 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-12 12:57 [for-next][PATCH 0/4] tracing: More last minute updates for 4.13 Steven Rostedt
2017-07-12 12:57 ` Steven Rostedt [this message]
2017-07-12 13:02 ` [for-next][PATCH 1/4] tracing: Fixup trace file header alignment Joel Fernandes
2017-07-12 12:57 ` [for-next][PATCH 2/4] tracing: Update Documentation/trace/ftrace.txt Steven Rostedt
2017-07-12 12:57 ` [for-next][PATCH 3/4] tracing: Do note expose stack_trace_filter without DYNAMIC_FTRACE Steven Rostedt
2017-07-12 12:57 ` [for-next][PATCH 4/4] ftrace: Hide cached module code for !CONFIG_MODULES Steven Rostedt
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20170712125725.681003204@goodmis.org \
--to=rostedt@goodmis.org \
--cc=akpm@linux-foundation.org \
--cc=joelaf@google.com \
--cc=linux-kernel@vger.kernel.org \
--cc=mingo@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox