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| author | AKASHI Takahiro | 2014-04-30 11:51:30 +0200 |
|---|---|---|
| committer | Catalin Marinas | 2014-05-12 17:43:29 +0200 |
| commit | 3157858feff89196635b01495d5ec9ebe206639e (patch) | |
| tree | bd480fd2334d69ec10e7fc22befc9b795278ef58 /arch/arm64/kernel/entry.S | |
| parent | arm64: make a single hook to syscall_trace() for all syscall features (diff) | |
| download | kernel-qcow2-linux-3157858feff89196635b01495d5ec9ebe206639e.tar.gz kernel-qcow2-linux-3157858feff89196635b01495d5ec9ebe206639e.tar.xz kernel-qcow2-linux-3157858feff89196635b01495d5ec9ebe206639e.zip | |
arm64: split syscall_trace() into separate functions for enter/exit
As done in arm, this change makes it easy to confirm we invoke syscall
related hooks, including syscall tracepoint, audit and seccomp which would
be implemented later, in correct order. That is, undoing operations in the
opposite order on exit that they were done on entry.
Acked-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/kernel/entry.S')
| -rw-r--r-- | arch/arm64/kernel/entry.S | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/arch/arm64/kernel/entry.S b/arch/arm64/kernel/entry.S index be95f3544ce4..a670d0a98c89 100644 --- a/arch/arm64/kernel/entry.S +++ b/arch/arm64/kernel/entry.S @@ -628,9 +628,8 @@ ENDPROC(el0_svc) * switches, and waiting for our parent to respond. */ __sys_trace: - mov x1, sp - mov w0, #0 // trace entry - bl syscall_trace + mov x0, sp + bl syscall_trace_enter adr lr, __sys_trace_return // return address uxtw scno, w0 // syscall number (possibly new) mov x1, sp // pointer to regs @@ -645,9 +644,8 @@ __sys_trace: __sys_trace_return: str x0, [sp] // save returned x0 - mov x1, sp - mov w0, #1 // trace exit - bl syscall_trace + mov x0, sp + bl syscall_trace_exit b ret_to_user /* |