On Tue, Nov 07, 2023 at 12:16:25PM +0200, Adrian Hunter wrote:
[...]
"If users know" <- how would users know? Could the kernel or tools also figure it out?
Adrian, I'm trying to go all the outstanding patches, do you still have any issues with this series?
No, although the question wasn't actually answered. I presume users just have to try the 'T' option and see if it helps.
Sometimes, users are software developers in SoC companies, they can know well for the hardware design but are confused why current implementation cannot use timestamp trace. This is the main reason I sent this patch set.
An example hardware platform is DB410c [1], we know its CoreSight can support timestamp trace, but if without this adding option 'T', we have no chance to use it due to it its CPU arch is prior to Armv8.4.
perf config might be better than an itrace option, but you decide.
I understand perf config is a better approach due to users don't need to bother inputting options after set it once. I will look at it and respin new patch set.
Thanks for suggestion!
Leo
Em Tue, Nov 07, 2023 at 10:18:08PM +0800, Leo Yan escreveu:
On Tue, Nov 07, 2023 at 12:16:25PM +0200, Adrian Hunter wrote:
[...]
"If users know" <- how would users know? Could the kernel or tools also figure it out?
Adrian, I'm trying to go all the outstanding patches, do you still have any issues with this series?
No, although the question wasn't actually answered. I presume users just have to try the 'T' option and see if it helps.
Sometimes, users are software developers in SoC companies, they can know well for the hardware design but are confused why current implementation cannot use timestamp trace. This is the main reason I sent this patch set.
An example hardware platform is DB410c [1], we know its CoreSight can support timestamp trace, but if without this adding option 'T', we have no chance to use it due to it its CPU arch is prior to Armv8.4.
perf config might be better than an itrace option, but you decide.
I understand perf config is a better approach due to users don't need to bother inputting options after set it once. I will look at it and respin new patch set.
Thanks for suggestion!
Thanks, applied.
- Arnaldo
-
Arnaldo Carvalho de Melo -
Leo Yan