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>
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@ -0,0 +1,49 @@
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linux: sysfs: use tracing_on as tracing_enabled is deprecated
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tracing_enabled use in the kernel is being deprecated as per commit
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6752ab4a9c30 [tracing: Deprecate tracing_enabled for tracing_on] in
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the linux mainline kernel. tracing_enabled use will generate a warning
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and may no longer function as expected, therefore move to use tracing_on.
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Upstream-status: Pending
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Signed-off-by: Dennis Hall <dennis.hall@windriver.com>
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Index: latencytop-0.5/fsync.c
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===================================================================
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--- latencytop-0.5.orig/fsync.c 2012-08-03 10:45:49.000000000 -0400
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+++ latencytop-0.5/fsync.c 2012-08-03 10:48:39.000000000 -0400
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@@ -149,19 +149,19 @@
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* cd /sys/kernel/debug/tracing
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* echo fsync > current_tracer
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* echo ftrace_printk > iter_ctrl
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- * echo 1 > tracing_enabled
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+ * echo 1 > tracing_on
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*/
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ret = system("/bin/mount -t debugfs none /sys/kernel/debug/");
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if (!ret)
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return -1;
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write_to_file("/sys/kernel/debug/tracing/current_tracer", "fsync");
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write_to_file("/sys/kernel/debug/tracing/iter_ctrl", "ftrace_printk");
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- write_to_file("/sys/kernel/debug/tracing/tracing_enabled", "1");
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+ write_to_file("/sys/kernel/debug/tracing/tracing_on", "1");
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}
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int disable_fsync_tracer(void)
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{
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- write_to_file("/sys/kernel/debug/tracing/tracing_enabled", "0");
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+ write_to_file("/sys/kernel/debug/tracing/tracing_on", "0");
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}
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@@ -339,8 +339,8 @@
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if (curduration > 5)
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curduration = 5;
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/* clear the ftrace buffer */
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- write_to_file("/sys/kernel/debug/tracing/tracing_enabled", "0");
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- write_to_file("/sys/kernel/debug/tracing/tracing_enabled", "1");
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+ write_to_file("/sys/kernel/debug/tracing/tracing_on", "0");
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+ write_to_file("/sys/kernel/debug/tracing/tracing_on", "1");
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key = select(1, &rfds, NULL, NULL, &end);
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parse_ftrace();
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print_global_list();
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@ -10,7 +10,8 @@ DEPENDS = "virtual/libintl ncurses glib-2.0 ${@base_contains('DISTRO_FEATURES',
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PR = "r3"
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SRC_URI = "http://www.latencytop.org/download/latencytop-${PV}.tar.gz \
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file://latencytop-makefile.patch"
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file://latencytop-makefile.patch \
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file://latencytop-fsync.patch"
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SRC_URI[md5sum] = "73bb3371c6ee0b0e68e25289027e865c"
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SRC_URI[sha256sum] = "9e7f72fbea7bd918e71212a1eabaad8488d2c602205d2e3c95d62cd57e9203ef"
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