diff options
| author | Kajol Jain <kjain@linux.ibm.com> | 2024-11-18 17:11:14 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2024-11-19 14:11:30 +1100 |
| commit | f26f9933e3e31b2117b804b6b8932388db88a131 (patch) | |
| tree | cca45a6dd146b18e165bf36d208c10b8b0895748 /arch/powerpc/include/asm | |
| parent | 5f0b48c6a168994cc09d02888c2d939eba2af193 (diff) | |
powerpc/perf: Add per-task/process monitoring to vpa_pmu driver
Enhance the vpa_pmu driver with a feature to observe context switch
latency event for both per-task (tid) and per-pid (pid) option.
Couple of new helper functions are added to hide the abstraction of
reading the context switch latency counter from kvm_vcpu_arch struct
and these helper functions are defined in the "kvm/book3s_hv.c".
"PERF_ATTACH_TASK" flag is used to decide whether to read the counter
values from lppaca or kvm_vcpu_arch struct.
Signed-off-by: Kajol Jain <kjain@linux.ibm.com>
Co-developed-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://patch.msgid.link/20241118114114.208964-4-kjain@linux.ibm.com
Diffstat (limited to 'arch/powerpc/include/asm')
| -rw-r--r-- | arch/powerpc/include/asm/kvm_book3s_64.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/kvm_book3s_64.h b/arch/powerpc/include/asm/kvm_book3s_64.h index f620e3126d68..b936e174eefd 100644 --- a/arch/powerpc/include/asm/kvm_book3s_64.h +++ b/arch/powerpc/include/asm/kvm_book3s_64.h @@ -691,6 +691,9 @@ void kvmhv_set_l2_counters_status(int cpu, bool status); u64 kvmhv_get_l1_to_l2_cs_time(void); u64 kvmhv_get_l2_to_l1_cs_time(void); u64 kvmhv_get_l2_runtime_agg(void); +u64 kvmhv_get_l1_to_l2_cs_time_vcpu(void); +u64 kvmhv_get_l2_to_l1_cs_time_vcpu(void); +u64 kvmhv_get_l2_runtime_agg_vcpu(void); #endif /* CONFIG_KVM_BOOK3S_HV_POSSIBLE */ |