[PATCH v2 2/4] powerpc/pseries: Don't trace hcall tracing wrapper
From: Nicholas Piggin <npiggin@gmail.com>
Date: 2021-05-08 10:16:30
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
This doesn't seem very useful to trace before the recursion check, even if the ftrace code has any recursion checks of its own. Be on the safe side and don't trace the hcall trace wrappers. Reviewed-by: Naveen N. Rao <redacted> Reported-by: Naveen N. Rao <redacted> Signed-off-by: Nicholas Piggin <npiggin@gmail.com> --- arch/powerpc/platforms/pseries/lpar.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/lpar.c b/arch/powerpc/platforms/pseries/lpar.c
index b619568a4d04..d79d7410c320 100644
--- a/arch/powerpc/platforms/pseries/lpar.c
+++ b/arch/powerpc/platforms/pseries/lpar.c@@ -1835,7 +1835,7 @@ void hcall_tracepoint_unregfunc(void) static DEFINE_PER_CPU(unsigned int, hcall_trace_depth); -void __trace_hcall_entry(unsigned long opcode, unsigned long *args) +notrace void __trace_hcall_entry(unsigned long opcode, unsigned long *args) { unsigned long flags; unsigned int *depth;
@@ -1863,7 +1863,7 @@ void __trace_hcall_entry(unsigned long opcode, unsigned long *args) local_irq_restore(flags); } -void __trace_hcall_exit(long opcode, long retval, unsigned long *retbuf) +notrace void __trace_hcall_exit(long opcode, long retval, unsigned long *retbuf) { unsigned long flags; unsigned int *depth;
--
2.23.0