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| author | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2018-12-07 21:13:28 +0300 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2018-12-22 16:21:02 +0300 |
| commit | a448276ce515c91cde4675be497364b91c764d95 (patch) | |
| tree | e231786f2358f89a66ba958c97ee4e42c35fe259 /arch/arm64/kernel/process.c | |
| parent | cec8d0e7f06e08b981e9d61bef267c8c36d536f5 (diff) | |
| download | linux-a448276ce515c91cde4675be497364b91c764d95.tar.xz | |
arm64: Use ftrace_graph_get_ret_stack() instead of curr_ret_stack
The structure of the ret_stack array on the task struct is going to
change, and accessing it directly via the curr_ret_stack index will no
longer give the ret_stack entry that holds the return address. To access
that, architectures must now use ftrace_graph_get_ret_stack() to get the
associated ret_stack that matches the saved return address.
Cc: linux-arm-kernel@lists.infradead.org
Cc: Will Deacon <will.deacon@arm.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'arch/arm64/kernel/process.c')
| -rw-r--r-- | arch/arm64/kernel/process.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c index d9a4c2d6dd8b..37a66394b07d 100644 --- a/arch/arm64/kernel/process.c +++ b/arch/arm64/kernel/process.c @@ -459,7 +459,7 @@ unsigned long get_wchan(struct task_struct *p) frame.fp = thread_saved_fp(p); frame.pc = thread_saved_pc(p); #ifdef CONFIG_FUNCTION_GRAPH_TRACER - frame.graph = p->curr_ret_stack; + frame.graph = 0; #endif do { if (unwind_frame(p, &frame)) |