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author | Chengming Zhou <zhouchengming@bytedance.com> | 2022-04-20 19:00:06 +0300 |
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committer | Catalin Marinas <catalin.marinas@arm.com> | 2022-04-29 21:21:12 +0300 |
commit | c4a0ebf87cebbfa28d56e7d93b2536e2311e30c9 (patch) | |
tree | 4bac1e78233bb63eebbc32430d88feac9326e2c7 /arch/arm64/mm/init.c | |
parent | e999995c84c3abb6dcae83f8c35942a8d4ee0451 (diff) | |
download | linux-c4a0ebf87cebbfa28d56e7d93b2536e2311e30c9.tar.xz |
arm64/ftrace: Make function graph use ftrace directly
As we do in commit 0c0593b45c9b ("x86/ftrace: Make function graph
use ftrace directly"), we don't need special hook for graph tracer,
but instead we use graph_ops:func function to install return_hooker.
Since commit 3b23e4991fb6 ("arm64: implement ftrace with regs") add
implementation for FTRACE_WITH_REGS on arm64, we can easily adopt
the same cleanup on arm64.
And this cleanup only changes the FTRACE_WITH_REGS implementation,
so the mcount-based implementation is unaffected.
While in theory it would be possible to make a similar cleanup for
!FTRACE_WITH_REGS, this will require rework of the core code, and
so for now we only change the FTRACE_WITH_REGS implementation.
Tested-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
Link: https://lore.kernel.org/r/20220420160006.17880-2-zhouchengming@bytedance.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/mm/init.c')
0 files changed, 0 insertions, 0 deletions