On Thu, 2015-08-27 at 15:58 +0200, leroy christophe wrote: > Hi, > > Has anybody already used 'perf' tool on powerpc MPC83xx ? > > I have been succesfully using perf on MPC8xx, but on MPC83xx I get > something strange. > > perf record/report reports addresses on user stack, as if it was mixing > up D accesses and I accesses. > > Any idea of what the problem can be ?
We are also experiencing strange addresses on 83xx, did find the cause of this problem? We are using Linux 4.1.0 > > # Samples: 8K of event 'cpu-clock' > # Event count (approx.): 2196000000 > # > # Overhead Command Shared Object Symbol > # ........ ............ .................. > ............................................ > # > 2.62% perf_reseau4 libpthread-2.18.so [.] __libc_send > 2.56% perf_reseau4 [kernel.kallsyms] [k] __ip_make_skb > 1.62% perf_reseau4 [kernel.kallsyms] [k] __ip_append_data.isra.39 > 1.55% perf_reseau4 [kernel.kallsyms] [k] ip_finish_output > 1.33% perf_reseau4 [unknown] [k] 0x7ffffd94 > 1.33% perf_reseau4 [unknown] [k] 0x7ffffd95 > 1.28% perf_reseau4 [unknown] [k] 0x7ffffd97 > 1.26% perf_reseau4 [unknown] [k] 0x7ffffda3 > 1.24% perf_reseau4 [unknown] [k] 0x7ffffd98 > 1.22% perf_reseau4 [unknown] [k] 0x7ffffd92 > 1.22% perf_reseau4 [unknown] [k] 0x7ffffd9b > 1.22% perf_reseau4 [unknown] [k] 0x7ffffdaa > 1.21% perf_reseau4 [unknown] [k] 0x7ffffd96 > 1.18% perf_reseau4 [unknown] [k] 0x7ffffda7 > 1.17% perf_reseau4 [unknown] [k] 0x7ffffd8d > 1.17% perf_reseau4 [unknown] [k] 0x7ffffd99 > 1.13% perf_reseau4 [unknown] [k] 0x7ffffd90 > 1.13% perf_reseau4 [unknown] [k] 0x7ffffda2 > 1.12% perf_reseau4 [kernel.kallsyms] [k] __local_bh_enable_ip > 1.12% perf_reseau4 [unknown] [k] 0x7ffffd9c > 1.12% perf_reseau4 [unknown] [k] 0x7ffffd9e > 1.10% perf_reseau4 [unknown] [k] 0x7ffffda0 > 1.08% perf_reseau4 [unknown] [k] 0x7ffffd9f > 1.08% perf_reseau4 [unknown] [k] 0x7ffffda6 > 1.05% perf_reseau4 [unknown] [k] 0x7ffffda8 > 1.02% perf_reseau4 [unknown] [k] 0x7ffffd9a > 1.01% perf_reseau4 [unknown] [k] 0x7ffffdb0 > 1.00% perf_reseau4 [unknown] [k] 0x7ffffd89 > 1.00% perf_reseau4 [unknown] [k] 0x7ffffd8b > 1.00% perf_reseau4 [unknown] [k] 0x7ffffdac _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
