Naveen N. Rao ea678ac627 powerpc64/ftrace: Add a field in paca to disable ftrace in unsafe code paths ... We have some C code that we call into from real mode where we cannot take any exceptions. Though the C functions themselves are mostly safe, if these functions are traced, there is a possibility that we may take an exception. For instance, in certain conditions, the ftrace code uses WARN(), which uses a 'trap' to do its job. For such scenarios, introduce a new field in paca 'ftrace_enabled', which is checked on ftrace entry before continuing. This field can then be set to zero to disable/pause ftrace, and set to a non-zero value to resume ftrace. Signed-off-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>		2018-05-03 22:32:25 +10:00
..
asm	powerpc64/ftrace: Add a field in paca to disable ftrace in unsafe code paths	2018-05-03 22:32:25 +10:00
uapi/asm	KVM changes for 4.16	2018-02-10 13:16:35 -08:00