kernel-packages team mailing list archive

Thread
Date
[Bug 1559350] [NEW] Show ARM PMU events in perf stat

To: kernel-packages@xxxxxxxxxxxxxxxxxxx
From: dann frazier <dann.frazier@xxxxxxxxxxxxx>
Date: Fri, 18 Mar 2016 23:20:18 -0000
Reply-to: Bug 1559350 <1559350@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
Public bug reported:

The upstream kernel now has support for self-describing PMU events. This
exposes these events to userspace so that they can be displayed by perf
stat. This greatly improves the discovery of these counters, which would
otherwise would require consulting an architecture manual. For example:

ubuntu@cvm2s2:~$ diff -u old/perf.list new/perf.list 
--- old/perf.list	2016-03-18 16:43:01.661396908 -0400
+++ new/perf.list	2016-03-18 16:53:28.948746988 -0400
@@ -34,6 +34,55 @@
   dTLB-store-misses                                  [Hardware cache event]
   dTLB-stores                                        [Hardware cache event]
   iTLB-load-misses                                   [Hardware cache event]
+  armv8_cavium_thunder/br_immed_retired/             [Kernel PMU event]
+  armv8_cavium_thunder/br_mis_pred/                  [Kernel PMU event]
+  armv8_cavium_thunder/br_mis_pred_retired/          [Kernel PMU event]
+  armv8_cavium_thunder/br_pred/                      [Kernel PMU event]
+  armv8_cavium_thunder/br_retired/                   [Kernel PMU event]
+  armv8_cavium_thunder/br_return_retired/            [Kernel PMU event]
+  armv8_cavium_thunder/bus_access/                   [Kernel PMU event]
+  armv8_cavium_thunder/bus_cycles/                   [Kernel PMU event]
+  armv8_cavium_thunder/chain/                        [Kernel PMU event]
+  armv8_cavium_thunder/cid_write_retired/            [Kernel PMU event]
+  armv8_cavium_thunder/cpu_cycles/                   [Kernel PMU event]
+  armv8_cavium_thunder/exc_return/                   [Kernel PMU event]
+  armv8_cavium_thunder/exc_taken/                    [Kernel PMU event]
+  armv8_cavium_thunder/inst_retired/                 [Kernel PMU event]
+  armv8_cavium_thunder/inst_spec/                    [Kernel PMU event]
+  armv8_cavium_thunder/l1d_cache/                    [Kernel PMU event]
+  armv8_cavium_thunder/l1d_cache_allocate/           [Kernel PMU event]
+  armv8_cavium_thunder/l1d_cache_refill/             [Kernel PMU event]
+  armv8_cavium_thunder/l1d_cache_wb/                 [Kernel PMU event]
+  armv8_cavium_thunder/l1d_tlb/                      [Kernel PMU event]
+  armv8_cavium_thunder/l1d_tlb_refill/               [Kernel PMU event]
+  armv8_cavium_thunder/l1i_cache/                    [Kernel PMU event]
+  armv8_cavium_thunder/l1i_cache_refill/             [Kernel PMU event]
+  armv8_cavium_thunder/l1i_tlb/                      [Kernel PMU event]
+  armv8_cavium_thunder/l1i_tlb_refill/               [Kernel PMU event]
+  armv8_cavium_thunder/l21_tlb/                      [Kernel PMU event]
+  armv8_cavium_thunder/l21_tlb_refill/               [Kernel PMU event]
+  armv8_cavium_thunder/l2d_cache/                    [Kernel PMU event]
+  armv8_cavium_thunder/l2d_cache_allocate/           [Kernel PMU event]
+  armv8_cavium_thunder/l2d_cache_refill/             [Kernel PMU event]
+  armv8_cavium_thunder/l2d_cache_wb/                 [Kernel PMU event]
+  armv8_cavium_thunder/l2d_tlb/                      [Kernel PMU event]
+  armv8_cavium_thunder/l2d_tlb_refill/               [Kernel PMU event]
+  armv8_cavium_thunder/l2i_cache/                    [Kernel PMU event]
+  armv8_cavium_thunder/l2i_cache_refill/             [Kernel PMU event]
+  armv8_cavium_thunder/l3d_cache/                    [Kernel PMU event]
+  armv8_cavium_thunder/l3d_cache_allocate/           [Kernel PMU event]
+  armv8_cavium_thunder/l3d_cache_refill/             [Kernel PMU event]
+  armv8_cavium_thunder/l3d_cache_wb/                 [Kernel PMU event]
+  armv8_cavium_thunder/ld_retired/                   [Kernel PMU event]
+  armv8_cavium_thunder/mem_access/                   [Kernel PMU event]
+  armv8_cavium_thunder/memory_error/                 [Kernel PMU event]
+  armv8_cavium_thunder/pc_write_retired/             [Kernel PMU event]
+  armv8_cavium_thunder/st_retired/                   [Kernel PMU event]
+  armv8_cavium_thunder/stall_backend/                [Kernel PMU event]
+  armv8_cavium_thunder/stall_frontend/               [Kernel PMU event]
+  armv8_cavium_thunder/sw_incr/                      [Kernel PMU event]
+  armv8_cavium_thunder/ttbr_write_retired/           [Kernel PMU event]
+  armv8_cavium_thunder/unaligned_ldst_retired/       [Kernel PMU event]
   rNNN                                               [Raw hardware event descriptor]
   cpu/t1=v1[,t2=v2,t3 ...]/modifier                  [Raw hardware event descriptor]
   mem:<addr>[/len][:access]                          [Hardware breakpoint]

** Affects: linux (Ubuntu)
     Importance: Undecided
     Assignee: dann frazier (dannf)
         Status: In Progress


** Tags: arm64 armhf

** Tags added: arm64 armhf

** Changed in: linux (Ubuntu)
       Status: Confirmed => In Progress

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1559350

Title:
  Show ARM PMU events in perf stat

Status in linux package in Ubuntu:
  In Progress

Bug description:
  The upstream kernel now has support for self-describing PMU events.
  This exposes these events to userspace so that they can be displayed
  by perf stat. This greatly improves the discovery of these counters,
  which would otherwise would require consulting an architecture manual.
  For example:

  ubuntu@cvm2s2:~$ diff -u old/perf.list new/perf.list 
  --- old/perf.list	2016-03-18 16:43:01.661396908 -0400
  +++ new/perf.list	2016-03-18 16:53:28.948746988 -0400
  @@ -34,6 +34,55 @@
     dTLB-store-misses                                  [Hardware cache event]
     dTLB-stores                                        [Hardware cache event]
     iTLB-load-misses                                   [Hardware cache event]
  +  armv8_cavium_thunder/br_immed_retired/             [Kernel PMU event]
  +  armv8_cavium_thunder/br_mis_pred/                  [Kernel PMU event]
  +  armv8_cavium_thunder/br_mis_pred_retired/          [Kernel PMU event]
  +  armv8_cavium_thunder/br_pred/                      [Kernel PMU event]
  +  armv8_cavium_thunder/br_retired/                   [Kernel PMU event]
  +  armv8_cavium_thunder/br_return_retired/            [Kernel PMU event]
  +  armv8_cavium_thunder/bus_access/                   [Kernel PMU event]
  +  armv8_cavium_thunder/bus_cycles/                   [Kernel PMU event]
  +  armv8_cavium_thunder/chain/                        [Kernel PMU event]
  +  armv8_cavium_thunder/cid_write_retired/            [Kernel PMU event]
  +  armv8_cavium_thunder/cpu_cycles/                   [Kernel PMU event]
  +  armv8_cavium_thunder/exc_return/                   [Kernel PMU event]
  +  armv8_cavium_thunder/exc_taken/                    [Kernel PMU event]
  +  armv8_cavium_thunder/inst_retired/                 [Kernel PMU event]
  +  armv8_cavium_thunder/inst_spec/                    [Kernel PMU event]
  +  armv8_cavium_thunder/l1d_cache/                    [Kernel PMU event]
  +  armv8_cavium_thunder/l1d_cache_allocate/           [Kernel PMU event]
  +  armv8_cavium_thunder/l1d_cache_refill/             [Kernel PMU event]
  +  armv8_cavium_thunder/l1d_cache_wb/                 [Kernel PMU event]
  +  armv8_cavium_thunder/l1d_tlb/                      [Kernel PMU event]
  +  armv8_cavium_thunder/l1d_tlb_refill/               [Kernel PMU event]
  +  armv8_cavium_thunder/l1i_cache/                    [Kernel PMU event]
  +  armv8_cavium_thunder/l1i_cache_refill/             [Kernel PMU event]
  +  armv8_cavium_thunder/l1i_tlb/                      [Kernel PMU event]
  +  armv8_cavium_thunder/l1i_tlb_refill/               [Kernel PMU event]
  +  armv8_cavium_thunder/l21_tlb/                      [Kernel PMU event]
  +  armv8_cavium_thunder/l21_tlb_refill/               [Kernel PMU event]
  +  armv8_cavium_thunder/l2d_cache/                    [Kernel PMU event]
  +  armv8_cavium_thunder/l2d_cache_allocate/           [Kernel PMU event]
  +  armv8_cavium_thunder/l2d_cache_refill/             [Kernel PMU event]
  +  armv8_cavium_thunder/l2d_cache_wb/                 [Kernel PMU event]
  +  armv8_cavium_thunder/l2d_tlb/                      [Kernel PMU event]
  +  armv8_cavium_thunder/l2d_tlb_refill/               [Kernel PMU event]
  +  armv8_cavium_thunder/l2i_cache/                    [Kernel PMU event]
  +  armv8_cavium_thunder/l2i_cache_refill/             [Kernel PMU event]
  +  armv8_cavium_thunder/l3d_cache/                    [Kernel PMU event]
  +  armv8_cavium_thunder/l3d_cache_allocate/           [Kernel PMU event]
  +  armv8_cavium_thunder/l3d_cache_refill/             [Kernel PMU event]
  +  armv8_cavium_thunder/l3d_cache_wb/                 [Kernel PMU event]
  +  armv8_cavium_thunder/ld_retired/                   [Kernel PMU event]
  +  armv8_cavium_thunder/mem_access/                   [Kernel PMU event]
  +  armv8_cavium_thunder/memory_error/                 [Kernel PMU event]
  +  armv8_cavium_thunder/pc_write_retired/             [Kernel PMU event]
  +  armv8_cavium_thunder/st_retired/                   [Kernel PMU event]
  +  armv8_cavium_thunder/stall_backend/                [Kernel PMU event]
  +  armv8_cavium_thunder/stall_frontend/               [Kernel PMU event]
  +  armv8_cavium_thunder/sw_incr/                      [Kernel PMU event]
  +  armv8_cavium_thunder/ttbr_write_retired/           [Kernel PMU event]
  +  armv8_cavium_thunder/unaligned_ldst_retired/       [Kernel PMU event]
     rNNN                                               [Raw hardware event descriptor]
     cpu/t1=v1[,t2=v2,t3 ...]/modifier                  [Raw hardware event descriptor]
     mem:<addr>[/len][:access]                          [Hardware breakpoint]

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1559350/+subscriptions
Follow ups

[Bug 1559350] Re: Show ARM PMU events in perf stat
From: Launchpad Bug Tracker, 2016-03-29