diff options
| author | Wu Hao <hao.wu@intel.com> | 2020-04-27 09:06:23 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-28 15:49:28 +0200 |
| commit | 724142f8c42a7b01dbf9738eb00d7addbad6f862 (patch) | |
| tree | e8653683e69c8befce5bc989decf6284ddedcb96 /drivers/fpga/dfl-fme.h | |
| parent | 1f03ac9460cf0c4886fc8a72fb3d0cd479b59bca (diff) | |
fpga: dfl: fme: add performance reporting support
This patch adds support for performance reporting private feature
for FPGA Management Engine (FME). Now it supports several different
performance counters, including 'basic', 'cache', 'fabric', 'vtd'
and 'vtd_sip'. It allows user to use standard linux tools to access
these performance counters.
e.g. List all events by "perf list"
perf list | grep fme
dfl_fme0/cache_read_hit/ [Kernel PMU event]
dfl_fme0/cache_read_miss/ [Kernel PMU event]
...
dfl_fme0/fab_mmio_read/ [Kernel PMU event]
dfl_fme0/fab_mmio_write/ [Kernel PMU event]
...
dfl_fme0/fab_port_mmio_read,portid=?/ [Kernel PMU event]
dfl_fme0/fab_port_mmio_write,portid=?/ [Kernel PMU event]
...
dfl_fme0/vtd_port_devtlb_1g_fill,portid=?/ [Kernel PMU event]
dfl_fme0/vtd_port_devtlb_2m_fill,portid=?/ [Kernel PMU event]
...
dfl_fme0/vtd_sip_iotlb_1g_hit/ [Kernel PMU event]
dfl_fme0/vtd_sip_iotlb_1g_miss/ [Kernel PMU event]
...
dfl_fme0/clock [Kernel PMU event]
...
e.g. check increased counter value after run one application using
"perf stat" command.
perf stat -e dfl_fme0/fab_mmio_read/,dfl_fme0/fab_mmio_write/ ./test
Performance counter stats for './test':
1 dfl_fme0/fab_mmio_read/
2 dfl_fme0/fab_mmio_write/
1.009496520 seconds time elapsed
Please note that fabric counters support both fab_* and fab_port_*, but
actually they are sharing one set of performance counters in hardware.
If user wants to monitor overall data events on fab_* then fab_port_*
can't be supported at the same time, see example below:
perf stat -e dfl_fme0/fab_mmio_read/,dfl_fme0/fab_port_mmio_write,portid=0/
Performance counter stats for 'system wide':
0 dfl_fme0/fab_mmio_read/
<not supported> dfl_fme0/fab_port_mmio_write,portid=0/
2.141064085 seconds time elapsed
Signed-off-by: Luwei Kang <luwei.kang@intel.com>
Signed-off-by: Xu Yilun <yilun.xu@intel.com>
Signed-off-by: Wu Hao <hao.wu@intel.com>
Link: https://lore.kernel.org/r/1587949583-12058-3-git-send-email-hao.wu@intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/fpga/dfl-fme.h')
| -rw-r--r-- | drivers/fpga/dfl-fme.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/fpga/dfl-fme.h b/drivers/fpga/dfl-fme.h index 6685c8ef965b..4195dd68193e 100644 --- a/drivers/fpga/dfl-fme.h +++ b/drivers/fpga/dfl-fme.h @@ -38,5 +38,7 @@ extern const struct dfl_feature_id fme_pr_mgmt_id_table[]; extern const struct dfl_feature_ops fme_global_err_ops; extern const struct dfl_feature_id fme_global_err_id_table[]; extern const struct attribute_group fme_global_err_group; +extern const struct dfl_feature_ops fme_perf_ops; +extern const struct dfl_feature_id fme_perf_id_table[]; #endif /* __DFL_FME_H */ |