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latencytop: Deprecate tracing_enabled for tracing_on 

tracing_enabled should not be used, it is heavy weight and does not
do much in helping lower the overhead. see commmit (Deprecate
tracing_enabled for tracing_on 6752ab4a9c30d5411b2dfdb251a3f1cb18aae48)
in kernel

(From OE-Core rev: ee95048cf0c79dc52857dbc0e5da9363f2ad8b9b)

Signed-off-by: Roy.Li <rongqing.li@windriver.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Roy.Li 2013-06-08 15:22:06 +08:00 committed by Richard Purdie
parent 70cf6ee7c3
commit 670c651451
2 changed files with 51 additions and 1 deletions
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49
meta/recipes-kernel/latencytop/latencytop-0.5/latencytop-fsync.patch Normal file
View File

@ -0,0 +1,49 @@
linux: sysfs: use tracing_on as tracing_enabled is deprecated
tracing_enabled use in the kernel is being deprecated as per commit
6752ab4a9c30 [tracing: Deprecate tracing_enabled for tracing_on] in
the linux mainline kernel. tracing_enabled use will generate a warning
and may no longer function as expected, therefore move to use tracing_on.
Upstream-status: Pending
Signed-off-by: Dennis Hall <dennis.hall@windriver.com>
Index: latencytop-0.5/fsync.c
===================================================================
--- latencytop-0.5.orig/fsync.c 2012-08-03 10:45:49.000000000 -0400
+++ latencytop-0.5/fsync.c 2012-08-03 10:48:39.000000000 -0400
@@ -149,19 +149,19 @@
* cd /sys/kernel/debug/tracing
* echo fsync > current_tracer
* echo ftrace_printk > iter_ctrl
- * echo 1 > tracing_enabled
+ * echo 1 > tracing_on
*/
ret = system("/bin/mount -t debugfs none /sys/kernel/debug/");
if (!ret)
return -1;
write_to_file("/sys/kernel/debug/tracing/current_tracer", "fsync");
write_to_file("/sys/kernel/debug/tracing/iter_ctrl", "ftrace_printk");
- write_to_file("/sys/kernel/debug/tracing/tracing_enabled", "1");
+ write_to_file("/sys/kernel/debug/tracing/tracing_on", "1");
}
int disable_fsync_tracer(void)
{
- write_to_file("/sys/kernel/debug/tracing/tracing_enabled", "0");
+ write_to_file("/sys/kernel/debug/tracing/tracing_on", "0");
}
@@ -339,8 +339,8 @@
if (curduration > 5)
curduration = 5;
/* clear the ftrace buffer */
- write_to_file("/sys/kernel/debug/tracing/tracing_enabled", "0");
- write_to_file("/sys/kernel/debug/tracing/tracing_enabled", "1");
+ write_to_file("/sys/kernel/debug/tracing/tracing_on", "0");
+ write_to_file("/sys/kernel/debug/tracing/tracing_on", "1");
key = select(1, &rfds, NULL, NULL, &end);
parse_ftrace();
print_global_list();

3
meta/recipes-kernel/latencytop/latencytop_0.5.bb
View File

@ -10,7 +10,8 @@ DEPENDS = "virtual/libintl ncurses glib-2.0 ${@base_contains('DISTRO_FEATURES',
PR = "r3"
SRC_URI = "http://www.latencytop.org/download/latencytop-${PV}.tar.gz \
file://latencytop-makefile.patch"
file://latencytop-makefile.patch \
file://latencytop-fsync.patch"
SRC_URI[md5sum] = "73bb3371c6ee0b0e68e25289027e865c"
SRC_URI[sha256sum] = "9e7f72fbea7bd918e71212a1eabaad8488d2c602205d2e3c95d62cd57e9203ef"