powerpc/rtas: add tracepoints around RTAS entry

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Decompose the RTAS entry C code into tracing and non-tracing variants,
calling the just-added tracepoints in the tracing-enabled path. Skip
tracing in contexts known to be unsafe (real mode, CPU offline).

Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20230125-b4-powerpc-rtas-queue-v3-11-26929c8cce78@linux.ibm.com

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Nathan Lynch 2023-02-10 12:41:59 -06:00 • committed by Michael Ellerman

parent 2c81ca7fba

commit 24098f580e

1 changed files with 53 additions and 6 deletions

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arch/powerpc/kernel/rtas.c

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