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perf/x86/amd: Support PERF_SAMPLE_PHY_ADDR 

IBS_DC_PHYSADDR provides the physical data address for the tagged load/
store operation. Populate perf sample physical address using it.

Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20220928095805.596-7-ravi.bangoria@amd.com
This commit is contained in:
Ravi Bangoria 2022-09-28 15:27:56 +05:30 committed by Peter Zijlstra
parent cb2bb85f7e
commit 5b26af6d2b
2 changed files with 9 additions and 2 deletions
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8
arch/x86/events/amd/ibs.c
View File

@ -989,6 +989,11 @@ static void perf_ibs_parse_ld_st_data(__u64 sample_type,
data->addr = ibs_data->regs[ibs_op_msr_idx(MSR_AMD64_IBSDCLINAD)];
data->sample_flags |= PERF_SAMPLE_ADDR;
}
if (sample_type & PERF_SAMPLE_PHYS_ADDR && op_data3.dc_phy_addr_valid) {
data->phys_addr = ibs_data->regs[ibs_op_msr_idx(MSR_AMD64_IBSDCPHYSAD)];
data->sample_flags |= PERF_SAMPLE_PHYS_ADDR;
}
}
static int perf_ibs_get_offset_max(struct perf_ibs *perf_ibs, u64 sample_type,
@ -998,7 +1003,8 @@ static int perf_ibs_get_offset_max(struct perf_ibs *perf_ibs, u64 sample_type,
(perf_ibs == &perf_ibs_op &&
(sample_type & PERF_SAMPLE_DATA_SRC ||
sample_type & PERF_SAMPLE_WEIGHT_TYPE ||
sample_type & PERF_SAMPLE_ADDR)))
sample_type & PERF_SAMPLE_ADDR ||
sample_type & PERF_SAMPLE_PHYS_ADDR)))
return perf_ibs->offset_max;
else if (check_rip)
return 3;

3
kernel/events/core.c
View File

@ -7435,7 +7435,8 @@ void perf_prepare_sample(struct perf_event_header *header,
header->size += size;
}
if (sample_type & PERF_SAMPLE_PHYS_ADDR)
if (sample_type & PERF_SAMPLE_PHYS_ADDR &&
filtered_sample_type & PERF_SAMPLE_PHYS_ADDR)
data->phys_addr = perf_virt_to_phys(data->addr);
#ifdef CONFIG_CGROUP_PERF