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
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ftrace_32.S
ftrace_64_mprofile.S	powerpc64/ftrace: Add a field in paca to disable ftrace in unsafe code paths	2018-05-03 22:32:25 +10:00
ftrace_64_pg.S	powerpc64/ftrace: Add a field in paca to disable ftrace in unsafe code paths	2018-05-03 22:32:25 +10:00
ftrace_64.S	powerpc/ftrace/64: Split further based on -mprofile-kernel	2017-04-27 22:20:29 +10:00
ftrace.c	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
Makefile	License cleanup: add SPDX GPL-2.0 license identifier to files with no license	2017-11-02 11:10:55 +01:00
trace_clock.c