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| author | Alan Kao <alankao@andestech.com> | 2018-02-13 08:13:21 +0300 |
|---|---|---|
| committer | Palmer Dabbelt <palmer@sifive.com> | 2018-04-03 05:59:13 +0300 |
| commit | b785ec129bd9498ecd6e221e45820b00c6ed4adf (patch) | |
| tree | f62b6429a1853e0d9627733a2f9ea7b4baeed937 /security | |
| parent | aea4c671fb985e6a9ffc365c43ea6f5e0d737fea (diff) | |
| download | linux-b785ec129bd9498ecd6e221e45820b00c6ed4adf.tar.xz | |
riscv/ftrace: Add HAVE_FUNCTION_GRAPH_RET_ADDR_PTR support
In walk_stackframe, the pc now receives the address from calling
ftrace_graph_ret_addr instead of manual calculation.
Note that the original calculation,
pc = frame->ra - 4
is buggy when the instruction at the return address happened to be a
compressed inst. But since it is not a critical part of ftrace, it is
ignored for now to ease the review process.
Cc: Greentime Hu <greentime@andestech.com>
Signed-off-by: Alan Kao <alankao@andestech.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Diffstat (limited to 'security')
0 files changed, 0 insertions, 0 deletions