hulk inclusion
category: feature
bugzilla: 18657
CVE: NA

-------------------------------------------

After the commit ffd3d18c (perf tools: Add ARM Statistical
Profiling Extensions (SPE) support) is merged, "perf record" and
"perf report --dump-raw-trace" have been supported. However, the
raw data that is dumped cannot be used without parsing.

This patch is to improve the "perf report" support for spe, and
further process the data. Currently, support for the three events
of llc-miss, tlb-miss, branch-miss and remote-access is added.

Example usage:

$ ./perf record -c 1024 -e arm_spe_0/branch_filter=1,ts_enable=1,pct_enable=1,pa_enable=1,load_filter=1,jitter=1,store_filter=1,min_latency=0/ -o perf-armspe-dd.data dd if=/dev/zero of=/dev/null count=10000

$ ./perf report -i perf-armspe-dd.data --stdio
--------------------------------------------------------------------
...
# Samples: 23  of event 'llc-miss'
# Event count (approx.): 23
...
    33.33%    33.33%  dd       [kernel.kallsyms]  [k] perf_iterate_ctx.constprop.64
    12.12%    12.12%  dd       [kernel.kallsyms]  [k] perf_event_mmap
     6.06%     6.06%  dd       [kernel.kallsyms]  [k] copy_page
     6.06%     6.06%  dd       ld-2.28.so         [.] _dl_relocate_object
     3.03%     3.03%  dd       [kernel.kallsyms]  [k] change_protection_range
     3.03%     3.03%  dd       [kernel.kallsyms]  [k] filemap_map_pages
     3.03%     3.03%  dd       [kernel.kallsyms]  [k] free_pages_and_swap_cache
     3.03%     3.03%  dd       [kernel.kallsyms]  [k] generic_permission
     3.03%     3.03%  dd       [kernel.kallsyms]  [k] kmem_cache_alloc
     3.03%     3.03%  dd       [kernel.kallsyms]  [k] lookup_fast
     3.03%     3.03%  dd       [kernel.kallsyms]  [k] perf_event_exec
     3.03%     3.03%  dd       [kernel.kallsyms]  [k] radix_tree_next_chunk
     3.03%     3.03%  dd       [kernel.kallsyms]  [k] ring_buffer_record_is_on
     3.03%     3.03%  dd       ld-2.28.so         [.] _dl_lookup_symbol_x
     3.03%     3.03%  dd       ld-2.28.so         [.] _dl_start
     3.03%     3.03%  dd       ld-2.28.so         [.] dl_main
     3.03%     3.03%  dd       ld-2.28.so         [.] strcmp
     3.03%     3.03%  dd       libc-2.28.so       [.] _dl_addr
...
# Samples: 3  of event 'tlb-miss'
# Event count (approx.): 3
...
    33.33%    33.33%  dd       [kernel.kallsyms]  [k] filemap_map_pages
    33.33%    33.33%  dd       ld-2.28.so         [.] _dl_start
    33.33%    33.33%  dd       ld-2.28.so         [.] dl_main
...
# Samples: 20  of event 'branch-miss'
# Event count (approx.): 20
...
    15.38%    15.38%  dd       [kernel.kallsyms]  [k] __fput
     7.69%     7.69%  dd       [kernel.kallsyms]  [k] do_el0_ia_bp_hardening
     7.69%     7.69%  dd       [kernel.kallsyms]  [k] filemap_map_pages
     7.69%     7.69%  dd       [kernel.kallsyms]  [k] pagevec_lru_move_fn
     7.69%     7.69%  dd       [kernel.kallsyms]  [k] perf_event_mmap_output
     7.69%     7.69%  dd       [kernel.kallsyms]  [k] task_work_run
     7.69%     7.69%  dd       [kernel.kallsyms]  [k] unmap_single_vma
     7.69%     7.69%  dd       libc-2.28.so       [.] _IO_flush_all_lockp
     7.69%     7.69%  dd       libc-2.28.so       [.] __memcpy_generic
     7.69%     7.69%  dd       libc-2.28.so       [.] _dl_addr
     7.69%     7.69%  dd       libc-2.28.so       [.] msort_with_tmp.part.0
     7.69%     7.69%  dd       libc-2.28.so       [.] read_alias_file
...
# Samples: 5  of event 'remote-access'
# Event count (approx.): 5
...
    27.78%    27.78%  dd       [kernel.kallsyms]  [k] perf_iterate_ctx.constprop.64
    16.67%    16.67%  dd       [kernel.kallsyms]  [k] perf_event_mmap
     5.56%     5.56%  dd       [kernel.kallsyms]  [k] change_protection_range
     5.56%     5.56%  dd       [kernel.kallsyms]  [k] filemap_map_pages
     5.56%     5.56%  dd       [kernel.kallsyms]  [k] free_pages_and_swap_cache
     5.56%     5.56%  dd       [kernel.kallsyms]  [k] generic_permission
     5.56%     5.56%  dd       [kernel.kallsyms]  [k] lookup_fast
     5.56%     5.56%  dd       [kernel.kallsyms]  [k] perf_event_exec
     5.56%     5.56%  dd       [kernel.kallsyms]  [k] radix_tree_next_chunk
     5.56%     5.56%  dd       ld-2.28.so         [.] _dl_relocate_object
     5.56%     5.56%  dd       ld-2.28.so         [.] _dl_start
     5.56%     5.56%  dd       ld-2.28.so         [.] dl_main

--------------------------------------------------------------------
After that, more analysis and processing of the raw data of spe
will be done.
Signed-off-by: NTan Xiaojun <tanxiaojun@huawei.com>
Signed-off-by: NWei Li <liwei391@huawei.com>
Reviewed-by: NXuefeng Wang <wxf.wang@hisilicon.com>
Reviewed-by: NTan Xiaojun <tanxiaojun@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>