bbe15f16e5
[ Upstream commit8ebf6da9db] Switching tracers include instruction patching. To prevent that a instruction is patched while it's read the instruction patching is done in stop_machine 'context'. This also means that any function called during stop_machine must not be traced. Thus add 'notrace' to all functions called within stop_machine. Fixes:1ec2772e0c("s390/diag: add a statistic for diagnose calls") Fixes:38f2c691a4("s390: improve wait logic of stop_machine") Fixes:4ecf0a43e7("processor: get rid of cpu_relax_yield") Signed-off-by: Philipp Rudo <prudo@linux.ibm.com> Signed-off-by: Vasily Gorbik <gor@linux.ibm.com> Signed-off-by: Sasha Levin <sashal@kernel.org>