Messages in this thread | | | Date | Sun, 26 Apr 2020 15:45:31 +0200 | From | Thomas Bogendoerfer <> | Subject | Re: [PATCH] MIPS: Loongson: Add support for perf tool |
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On Sun, Apr 26, 2020 at 05:30:45PM +0800, Tiezhu Yang wrote: > In order to use perf tool on the Loongson platform, we should enable kernel > support for various performance events provided by software and hardware, > so add CONFIG_PERF_EVENTS=y to loongson3_defconfig. > > E.g. without this patch: > > [loongson@localhost perf]$ ./perf list > > List of pre-defined events (to be used in -e): > > duration_time [Tool event] > > rNNN [Raw hardware event descriptor] > cpu/t1=v1[,t2=v2,t3 ...]/modifier [Raw hardware event descriptor] > (see 'man perf-list' on how to encode it) > > mem:<addr>[/len][:access] [Hardware breakpoint] > > With this patch: > > [loongson@localhost perf]$ ./perf list > > List of pre-defined events (to be used in -e): > > branch-instructions OR branches [Hardware event] > branch-misses [Hardware event] > cpu-cycles OR cycles [Hardware event] > instructions [Hardware event] > > alignment-faults [Software event] > bpf-output [Software event] > context-switches OR cs [Software event] > cpu-clock [Software event] > cpu-migrations OR migrations [Software event] > dummy [Software event] > emulation-faults [Software event] > major-faults [Software event] > minor-faults [Software event] > page-faults OR faults [Software event] > task-clock [Software event] > > duration_time [Tool event] > > L1-dcache-load-misses [Hardware cache event] > L1-dcache-store-misses [Hardware cache event] > L1-icache-load-misses [Hardware cache event] > branch-load-misses [Hardware cache event] > branch-loads [Hardware cache event] > dTLB-load-misses [Hardware cache event] > dTLB-store-misses [Hardware cache event] > iTLB-load-misses [Hardware cache event] > > rNNN [Raw hardware event descriptor] > cpu/t1=v1[,t2=v2,t3 ...]/modifier [Raw hardware event descriptor] > (see 'man perf-list' on how to encode it) > > mem:<addr>[/len][:access] [Hardware breakpoint] > > Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn> > --- > arch/mips/configs/loongson3_defconfig | 1 + > 1 file changed, 1 insertion(+)
applied to mips-next.
Thomas.
-- Crap can work. Given enough thrust pigs will fly, but it's not necessarily a good idea. [ RFC1925, 2.3 ]
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