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author | 2022-11-03 17:05:19 +0000 | |
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committer | 2022-11-18 13:56:41 +0000 | |
commit | 94d095ffa0e16bb7f161a2b73bbe5c2795d499a8 (patch) | |
tree | 414e441cbfac851e75ad6c3f04e33da2f4989a2a /arch/arm64/include/asm/ftrace.h | |
parent | ftrace: rename ftrace_instruction_pointer_set() -> ftrace_regs_set_instructio... (diff) | |
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ftrace: abstract DYNAMIC_FTRACE_WITH_ARGS accesses
In subsequent patches we'll arrange for architectures to have an
ftrace_regs which is entirely distinct from pt_regs. In preparation for
this, we need to minimize the use of pt_regs to where strictly necessary
in the core ftrace code.
This patch adds new ftrace_regs_{get,set}_*() helpers which can be used
to manipulate ftrace_regs. When CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS=y,
these can always be used on any ftrace_regs, and when
CONFIG_HAVE_DYNAMIC_FTRACE_WITH_ARGS=n these can be used when regs are
available. A new ftrace_regs_has_args(fregs) helper is added which code
can use to check when these are usable.
Co-developed-by: Florent Revest <revest@chromium.org>
Signed-off-by: Florent Revest <revest@chromium.org>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/20221103170520.931305-4-mark.rutland@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Diffstat (limited to 'arch/arm64/include/asm/ftrace.h')
0 files changed, 0 insertions, 0 deletions