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Adrian Hunter 62977a9ba8 perf machine: Record if a arch has a single user/kernel address space 
commit ec1891afae upstream.

Some architectures have a single address space for kernel and user
addresses, which makes it possible to determine if an address is in
kernel space or user space. Some don't, e.g.: sparc.

Cache that info in perf_env so that, for instance, code needing to
fallback failed symbol lookups at the kernel space in single address
space arches can lookup at userspace.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: David S. Miller <davem@davemloft.net>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Leo Yan <leo.yan@linaro.org>
Cc: Mathieu Poirier <mathieu.poirier@linaro.org>
Cc: stable@vger.kernel.org # 4.19
Link: http://lkml.kernel.org/r/20181106210712.12098-2-adrian.hunter@intel.com
[ split from a larger patch ]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-01-09 17:38:42 +01:00
..
alpha perf tools: Add empty Build files for architectures lacking them 2015-08-06 16:24:15 -03:00
arm perf map: Remove map_type arg from map_groups__find() 2018-04-26 13:47:18 -03:00
arm64 perf arm64: Fix include path for asm-generic/unistd.h 2018-08-30 14:49:24 -03:00
mips perf tools: Add empty Build files for architectures lacking them 2015-08-06 16:24:15 -03:00
parisc perf tools: Add empty Build files for architectures lacking them 2015-08-06 16:24:15 -03:00
powerpc perf probe powerpc: Ignore SyS symbols irrespective of endianness 2018-08-30 15:15:11 -03:00
s390 perf auxtrace: Support for perf report -D for s390 2018-08-03 10:34:18 -03:00
sh License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
sparc License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
x86 perf tests: Add breakpoint modify tests 2018-08-30 14:49:22 -03:00
xtensa License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
Build perf tools: Fix build with ARCH=x86_64 2017-06-14 15:44:29 -03:00
common.c perf machine: Record if a arch has a single user/kernel address space 2019-01-09 17:38:42 +01:00
common.h perf machine: Record if a arch has a single user/kernel address space 2019-01-09 17:38:42 +01:00