linux-toradex.git/arch/sh/kernel/ftrace.c, branch v4.2.7

sh: ftrace: Add call to ftrace_graph_is_dead() in function graph code

2014-07-18T17:56:57+00:00

ftrace_stop() is going away as it disables parts of function tracing
that affects users that should not be affected. But ftrace_graph_stop()
is built on ftrace_stop(). Here's another example of killing all of
function tracing because something went wrong with function graph
tracing.

Instead of disabling all users of function tracing on function graph
error, disable only function graph tracing. To do this, the arch code
must call ftrace_graph_is_dead() before it implements function graph.

Cc: Paul Mundt 
Signed-off-by: Steven Rostedt

ftrace: Do not pass data to ftrace_dyn_arch_init

2014-03-07T15:06:14+00:00

As the data parameter is not really used by any ftrace_dyn_arch_init,
remove that from ftrace_dyn_arch_init. This also removes the addr
local variable from ftrace_init which is now unused.

Note the documentation was imprecise as it did not suggest to set
(*data) to 0.

Link: http://lkml.kernel.org/r/1393268401-24379-4-git-send-email-jslaby@suse.cz

Cc: Frederic Weisbecker 
Cc: Ingo Molnar 
Cc: linux-arch@vger.kernel.org
Signed-off-by: Jiri Slaby 
Signed-off-by: Steven Rostedt

ftrace: Pass retval through return in ftrace_dyn_arch_init()

2014-03-07T15:06:13+00:00

No architecture uses the "data" parameter in ftrace_dyn_arch_init() in any
way, it just sets the value to 0. And this is used as a return value
in the caller -- ftrace_init, which just checks the retval against
zero.

Note there is also "return 0" in every ftrace_dyn_arch_init.  So it is
enough to check the retval and remove all the indirect sets of data on
all archs.

Link: http://lkml.kernel.org/r/1393268401-24379-3-git-send-email-jslaby@suse.cz

Cc: linux-arch@vger.kernel.org
Signed-off-by: Jiri Slaby 
Signed-off-by: Steven Rostedt

tracing: Unify arch_syscall_addr() implementations

2010-02-17T12:07:21+00:00

Most implementations of arch_syscall_addr() are the same, so create a
default version in common code and move the one piece that differs (the
syscall table) to asm/syscall.h.  New arch ports don't have to waste
time copying & pasting this simple function.

The s390/sparc versions need to be different, so document why.

Signed-off-by: Mike Frysinger 
Acked-by: David S. Miller 
Acked-by: Paul Mundt 
Acked-by: Heiko Carstens 
Cc: Steven Rostedt 
LKML-Reference: <1264498803-17278-1-git-send-email-vapier@gentoo.org>
Signed-off-by: Frederic Weisbecker

sh: ftrace: Fix up syscall tracing build.

2009-12-11T06:25:41+00:00

Syscall tracing metadata was shuffled around, update accordingly.

Signed-off-by: Paul Mundt

sh: ftrace: Make code modification NMI safe.

2009-10-13T07:52:50+00:00

This cribs the x86 implementation of ftrace_nmi_enter() and friends to
make ftrace_modify_code() NMI safe, particularly on SMP configurations.

For additional notes on the problems involved, see the comment below
ftrace_call_replace().

Signed-off-by: Paul Mundt

sh: ftrace: Fix up syscall tracepoint support.

2009-10-13T03:42:48+00:00

Sync up with latest core changes in the syscalls tracing area:

- tracing: Map syscall name to number (syscall_name_to_nr())
- tracing: Call arch_init_ftrace_syscalls at boot
- tracing: add support tracepoint ids (set_syscall_{enter,exit}_id())

Taken from the s390 change.

Signed-off-by: Paul Mundt

sh: Move the FTRACE_SYSCALL_MAX definition in to asm/ftrace.h.

2009-08-24T13:48:27+00:00

Needed by ftrace changes in -tip.

Signed-off-by: Paul Mundt

sh: Function graph tracer support

2009-07-11T01:08:01+00:00

Add both dynamic and static function graph tracer support for sh.

Signed-off-by: Matt Fleming 
Signed-off-by: Paul Mundt

sh: Add ftrace syscall tracing support

2009-07-06T11:16:33+00:00

Now that I've added TIF_SYSCALL_FTRACE the thread flags do not fit into
a single byte any more. Code testing them now needs to be aware of the
upper and lower bytes.

Signed-off-by: Matt Fleming 
Signed-off-by: Paul Mundt