Max Filippov f984409a00 xtensa: use generic tracehooks ...

Use tracehook_report_syscall_{entry,exit} instead of a local copy of it
in do_syscall_trace. Allow tracehook to cancel syscall by returning
invalid syscall number to the system_call function.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

2017-05-01 07:00:10 -07:00

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