Folks, I'm working on rewriting the function graph tracer. In order to
do so, some changes need to be done that affect architecture specific
code. I'm only able to compile test these changes. I would like to
have folks check out my repo and give them a test.
The shadow stack of ret_stack is going to be modified to allow multiple
users of function graph tracer. It can no longer be referenced directly
as an array. A new utility "ftrace_graph_ret_stack()" is available to
get the ret_stack entry of a given frame of the shadow stack that
architectures can now use. This series converts all users to use the
new interface.
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
ftrace/core
Head SHA1: 51584396cff54aaf57ed0bd353767d71429f77b4
Steven Rostedt (VMware) (6):
fgraph: Add comment to describe ftrace_graph_get_ret_stack
x86/ftrace: Do not call function graph from dynamic trampolines
powerpc/frace: Use ftrace_graph_get_ret_stack() instead of curr_ret_stack
sparc64: Use ftrace_graph_get_ret_stack() instead of curr_ret_stack
sh: ftrace: Use ftrace_graph_get_ret_stack() instead of curr_ret_stack
arm64: Use ftrace_graph_get_ret_stack() instead of curr_ret_stack
----
arch/arm64/kernel/perf_callchain.c | 2 +-
arch/arm64/kernel/process.c | 2 +-
arch/arm64/kernel/return_address.c | 2 +-
arch/arm64/kernel/stacktrace.c | 12 +++++++-----
arch/arm64/kernel/time.c | 2 +-
arch/arm64/kernel/traps.c | 2 +-
arch/powerpc/kernel/process.c | 13 +++++++++----
arch/sh/kernel/dumpstack.c | 11 +++++++----
arch/sh/kernel/dwarf.c | 9 +++++----
arch/sparc/kernel/perf_event.c | 8 +++++---
arch/sparc/kernel/stacktrace.c | 8 +++++---
arch/sparc/kernel/traps_64.c | 7 ++++---
arch/x86/kernel/ftrace.c | 40 +++++++++++++++++++++-----------------
arch/x86/kernel/ftrace_64.S | 8 ++++----
kernel/trace/fgraph.c | 11 +++++++++++
15 files changed, 84 insertions(+), 53 deletions(-)
