linux/tools/perf/arch
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
..
alpha perf tools: Add empty Build files for architectures lacking them 2015-08-06 16:24:15 -03:00
arc/annotate perf annotate: Introduce basic support for ARC 2018-12-17 14:59:42 -03:00
arm perf parse: Refactor 'struct perf_evsel_config_term' 2020-01-30 11:55:02 +01:00
arm64 perf tools: Add arm64 version of get_cpuid() 2020-02-12 10:36:51 -03:00
csky perf tools: Avoid 'sample_reg_masks' being const + weak 2019-10-10 09:29:33 -03:00
mips perf tools: Add empty Build files for architectures lacking them 2015-08-06 16:24:15 -03:00
nds32 perf tools: Rename build libperf to perf 2019-02-14 15:18:08 -03:00
parisc perf tools: Add empty Build files for architectures lacking them 2015-08-06 16:24:15 -03:00
powerpc perf maps: Rename map_groups.h to maps.h 2019-11-26 11:07:46 -03:00
riscv perf tools: Avoid 'sample_reg_masks' being const + weak 2019-10-10 09:29:33 -03:00
s390 perf map_symbol: Rename ms->mg to ms->maps 2019-11-26 11:07:46 -03:00
sh treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
sparc treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
x86 tools include UAPI: Sync x86's syscalls_64.tbl, generic unistd.h and fcntl.h to pick up openat2 and pidfd_getfd 2020-02-11 16:41:06 -03:00
xtensa treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152 2019-05-30 11:26:32 -07:00
Build perf tools: Rename build libperf to perf 2019-02-14 15:18:08 -03:00
common.c perf debug: Remove needless include directives from debug.h 2019-08-31 19:10:19 -03:00
common.h perf env: Remove env.h from other headers where just a fwd decl is needed 2019-08-31 19:10:40 -03:00