mbox series

[v2,0/4] RTAS function table and tracepoints

Message ID 20221212230154.851325-1-nathanl@linux.ibm.com (mailing list archive)
Headers show
Series RTAS function table and tracepoints | expand

Message

Nathan Lynch Dec. 12, 2022, 11:01 p.m. UTC 
Resubmiting with revisions the remainder from the earlier "RTAS
maintenance" series[1] for further comments.

Components:
* Improved function token lookups, including efficient "reverse"
  token-to-name mappings.
* Static tracepoints for RTAS entry and exit.

Changes:
* Rebase on current powerpc/next.
* Drop unnecessary cast for xa_load() key argument. (Nick Child)
* Document RTAS_FN_FLAG_BANNED_FOR_SYSCALL_ON_LE. (Andrew Donnellan)
* Skip tracepoints in unsafe contexts (real mode, CPU
  offline). (Nicholas Piggin)
* Convert RTAS tracepoint definitions to unconditional
  variants (TRACE_EVENT_CONDITION() -> TRACE_EVENT()), dropping a
  cpu_online() check that duplicates work already done at the call
  site.

[1] https://lore.kernel.org/linuxppc-dev/20221118150751.469393-1-nathanl@linux.ibm.com/

Nathan Lynch (4):
  powerpc/rtas: improve function information lookups
  powerpc/rtas: strengthen do_enter_rtas() type safety, drop inline
  powerpc/tracing: tracepoints for RTAS entry and exit
  powerpc/rtas: add tracepoints around RTAS entry

 arch/powerpc/include/asm/rtas.h  |  87 ++++
 arch/powerpc/include/asm/trace.h | 103 ++++
 arch/powerpc/kernel/rtas.c       | 806 ++++++++++++++++++++++++++-----
 3 files changed, 874 insertions(+), 122 deletions(-)