linux-uconsole/tools/perf/arch/arm64/util
John Garry df5a5f3cf2 perf tools: Add arm64 version of get_cpuid()
Add an arm64 version of get_cpuid(), which is used for various annotation
and headers - for example, I now get the CPUID in "perf report --header",
as shown in this snippet:

  # hostname : ubuntu
  # os release : 5.5.0-rc1-dirty
  # perf version : 5.5.rc1.gbf8a13dc9851
  # arch : aarch64
  # nrcpus online : 96
  # nrcpus avail : 96
  # cpuid : 0x00000000480fd010

Since much of the code to read the MIDR is already in get_cpuid_str(),
factor out this code.

Tester notes:

I tested this patch on my new ARM64 Kunpeng 920 server.
[root@node1 zsk]# ./perf --version
perf version 5.6.rc1.g2cdb955b7252

Both perf list and perf stat can work.

Signed-off-by: John Garry <john.garry@huawei.com>
Tested-by: Shaokun Zhang <zhangshaokun@hisilicon.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will@kernel.org>
Cc: linux-arm-kernel@lists.infradead.org
Cc: linuxarm@huawei.com
Link: http://lore.kernel.org/lkml/1576245255-210926-1-git-send-email-john.garry@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-02-12 10:36:51 -03:00
..
arm-spe.c libperf: Move 'page_size' global variable to libperf 2019-09-25 09:51:48 -03:00
Build perf tools: Avoid 'sample_reg_masks' being const + weak 2019-10-10 09:29:33 -03:00
dwarf-regs.c perf tools: Remove util.h from where it is not needed 2019-09-20 09:19:20 -03:00
header.c perf tools: Add arm64 version of get_cpuid() 2020-02-12 10:36:51 -03:00
perf_regs.c perf tools: Avoid 'sample_reg_masks' being const + weak 2019-10-10 09:29:33 -03:00
sym-handling.c perf tools: Fix cross compile for ARM64 2019-11-06 15:49:39 -03:00
unwind-libdw.c perf tools arm64: Add libdw DWARF post unwind support for ARM64 2018-03-16 13:53:46 -03:00
unwind-libunwind.c perf tools: Remove debug.h from places where it is not needed 2019-09-20 09:19:20 -03:00