• Steven Rostedt (VMware)'s avatar
    MIPS: function_graph: Simplify with function_graph_enter() · 8712b27c
    Steven Rostedt (VMware) authored
    The function_graph_enter() function does the work of calling the function
    graph hook function and the management of the shadow stack, simplifying the
    work done in the architecture dependent prepare_ftrace_return().
    Have MIPS use the new code, and remove the shadow stack management as well as
    having to set up the trace structure.
    This is needed to prepare for a fix of a design bug on how the curr_ret_stack
    is used.
    Cc: Ralf Baechle <ralf@linux-mips.org>
    Cc: Paul Burton <paul.burton@mips.com>
    Cc: James Hogan <jhogan@kernel.org>
    Cc: linux-mips@linux-mips.org
    Cc: stable@kernel.org
    Fixes: 03274a3f ("tracing/fgraph: Adjust fgraph depth before calling trace return callback")
    Reviewed-by: default avatarMasami Hiramatsu <mhiramat@kernel.org>
    Signed-off-by: default avatarSteven Rostedt (VMware) <rostedt@goodmis.org>
ftrace.c 10.4 KB