| Message ID | 20230315094316.26772-1-yangyicong@huawei.com |
|---|---|
| Headers | show |
| Series | Improve PTT filter interface and some fixes | expand |
A gentle ping... Thanks. On 2023/3/15 17:43, Yicong Yang wrote: > From: Yicong Yang <yangyicong@hisilicon.com> > > This series tends to improve the PTT's filter interface in 2 aspects (Patch 2&3): > - Support dynamically filter updating to response to hotplug > Previous the supported filter list is settled down once the driver probed and > it maybe out-of-date if hotplug events happen later. User need to reload the > driver to update list. Patch 1/2 enable the driver to update the list by > registering a PCI bus notifier and the filter list will always be the latest. > - Export the available filters through sysfs > Previous user needs to calculate the filters and filter value using device's > BDF number, which requires the user to know the hardware well. Patch 3/3 tends > to export the available filter information through sysfs attributes, the filter > value will be gotten by reading the file. This will be more user friendly. > > Also includes a fix and an improve. Patch 1 tends to only export the online CPUs > supported by the PTT, this will make perf work properly when there's offline CPUs > within the node PTT locates. Patch 4 tends to set proper PMU capability to avoid > collecting unnecessary data to save the storage. > > Yicong Yang (4): > hwtracing: hisi_ptt: Make cpumask only present online CPUs > hwtracing: hisi_ptt: Add support for dynamically updating the filter > list > hwtracing: hisi_ptt: Export available filters through sysfs > hwtracing: hisi_ptt: Advertise PERF_PMU_CAP_NO_EXCLUDE for PTT PMU > > .../ABI/testing/sysfs-devices-hisi_ptt | 50 +++ > Documentation/trace/hisi-ptt.rst | 12 +- > drivers/hwtracing/ptt/hisi_ptt.c | 396 +++++++++++++++++- > drivers/hwtracing/ptt/hisi_ptt.h | 51 +++ > 4 files changed, 498 insertions(+), 11 deletions(-) >
From: Yicong Yang <yangyicong@hisilicon.com> This series tends to improve the PTT's filter interface in 2 aspects (Patch 2&3): - Support dynamically filter updating to response to hotplug Previous the supported filter list is settled down once the driver probed and it maybe out-of-date if hotplug events happen later. User need to reload the driver to update list. Patch 1/2 enable the driver to update the list by registering a PCI bus notifier and the filter list will always be the latest. - Export the available filters through sysfs Previous user needs to calculate the filters and filter value using device's BDF number, which requires the user to know the hardware well. Patch 3/3 tends to export the available filter information through sysfs attributes, the filter value will be gotten by reading the file. This will be more user friendly. Also includes a fix and an improve. Patch 1 tends to only export the online CPUs supported by the PTT, this will make perf work properly when there's offline CPUs within the node PTT locates. Patch 4 tends to set proper PMU capability to avoid collecting unnecessary data to save the storage. Yicong Yang (4): hwtracing: hisi_ptt: Make cpumask only present online CPUs hwtracing: hisi_ptt: Add support for dynamically updating the filter list hwtracing: hisi_ptt: Export available filters through sysfs hwtracing: hisi_ptt: Advertise PERF_PMU_CAP_NO_EXCLUDE for PTT PMU .../ABI/testing/sysfs-devices-hisi_ptt | 50 +++ Documentation/trace/hisi-ptt.rst | 12 +- drivers/hwtracing/ptt/hisi_ptt.c | 396 +++++++++++++++++- drivers/hwtracing/ptt/hisi_ptt.h | 51 +++ 4 files changed, 498 insertions(+), 11 deletions(-)