Messages in this thread Patch in this message | | | From | "Daniel W. S. Almeida" <> | Subject | [RFC PATCH] Documentation: perf: fix kernel-doc warnings in imx-ddr.rst | Date | Thu, 7 Nov 2019 15:57:55 -0300 |
| |
From: "Daniel W. S. Almeida" <dwlsalmeida@gmail.com>
Unexpected indentation errors were reported due to missing blank lines. Now fixed. No change in content otherwise.
Signed-off-by: Daniel W. S. Almeida <dwlsalmeida@gmail.com> --- Documentation/admin-guide/perf/imx-ddr.rst | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/Documentation/admin-guide/perf/imx-ddr.rst b/Documentation/admin-guide/perf/imx-ddr.rst index 517a205abad6..75c8b46ba6f9 100644 --- a/Documentation/admin-guide/perf/imx-ddr.rst +++ b/Documentation/admin-guide/perf/imx-ddr.rst @@ -18,6 +18,7 @@ The "format" directory describes format of the config (event ID) and config1 devices/imx8_ddr0/format/. The "events" directory describes the events types hardware supported that can be used with perf tool, see /sys/bus/event_source/ devices/imx8_ddr0/events/. + e.g.:: perf stat -a -e imx8_ddr0/cycles/ cmd perf stat -a -e imx8_ddr0/read/,imx8_ddr0/write/ cmd @@ -31,16 +32,19 @@ in the driver. Filter is defined with two configuration parts: --AXI_ID defines AxID matching value. --AXI_MASKING defines which bits of AxID are meaningful for the matching. + 0:corresponding bit is masked. 1: corresponding bit is not masked, i.e. used to do the matching. AXI_ID and AXI_MASKING are mapped on DPCR1 register in performance counter. When non-masked bits are matching corresponding AXI_ID bits then counter is incremented. Perf counter is incremented if + AxID && AXI_MASKING == AXI_ID && AXI_MASKING This filter doesn't support filter different AXI ID for axid-read and axid-write event at the same time as this filter is shared between counters. + e.g.:: perf stat -a -e imx8_ddr0/axid-read,axi_mask=0xMMMM,axi_id=0xDDDD/ cmd perf stat -a -e imx8_ddr0/axid-write,axi_mask=0xMMMM,axi_id=0xDDDD/ cmd @@ -48,5 +52,6 @@ in the driver. NOTE: axi_mask is inverted in userspace(i.e. set bits are bits to mask), and it will be reverted in driver automatically. so that the user can just specify axi_id to monitor a specific id, rather than having to specify axi_mask. + e.g.:: perf stat -a -e imx8_ddr0/axid-read,axi_id=0x12/ cmd, which will monitor ARID=0x12 -- 2.24.0
| |