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Subject[PATCH 05/13] perf/x86/amd: Support PERF_SAMPLE_ADDR using IBS_DC_LINADDR
Date
IBS_DC_LINADDR provides the linear data address for the tagged load/
store operation. Populate perf sample address using it.

Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com>
---
arch/x86/events/amd/ibs.c | 26 +++++++++++++++++++++++++-
1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/arch/x86/events/amd/ibs.c b/arch/x86/events/amd/ibs.c
index 5a6e278713f4..b57736357e25 100644
--- a/arch/x86/events/amd/ibs.c
+++ b/arch/x86/events/amd/ibs.c
@@ -965,12 +965,34 @@ static void perf_ibs_get_data_src(struct perf_event *event,
perf_ibs_get_mem_lock(op_data3, data);
}

+static void perf_ibs_get_data_addr(struct perf_event *event,
+ struct perf_ibs_data *ibs_data,
+ struct perf_sample_data *data)
+{
+ union perf_mem_data_src *data_src = &data->data_src;
+ u64 op_data3 = ibs_data->regs[ibs_op_msr_idx(MSR_AMD64_IBSOPDATA3)];
+ u64 lin_addr_valid = op_data3 & IBS_DC_LIN_ADDR_VALID_MASK;
+
+ if (!(event->attr.sample_type & PERF_SAMPLE_DATA_SRC))
+ perf_ibs_get_mem_op(op_data3, data);
+
+ if ((data_src->mem_op != PERF_MEM_OP_LOAD &&
+ data_src->mem_op != PERF_MEM_OP_STORE) ||
+ !lin_addr_valid) {
+ data->addr = 0x0;
+ return;
+ }
+
+ data->addr = ibs_data->regs[ibs_op_msr_idx(MSR_AMD64_IBSDCLINAD)];
+}
+
static int perf_ibs_get_offset_max(struct perf_ibs *perf_ibs, u64 sample_type,
int check_rip)
{
if (sample_type & PERF_SAMPLE_RAW ||
(perf_ibs == &perf_ibs_op &&
- sample_type & PERF_SAMPLE_DATA_SRC))
+ (sample_type & PERF_SAMPLE_DATA_SRC ||
+ sample_type & PERF_SAMPLE_ADDR)))
return perf_ibs->offset_max;
else if (check_rip)
return 3;
@@ -1082,6 +1104,8 @@ static int perf_ibs_handle_irq(struct perf_ibs *perf_ibs, struct pt_regs *iregs)
if (perf_ibs == &perf_ibs_op) {
if (event->attr.sample_type & PERF_SAMPLE_DATA_SRC)
perf_ibs_get_data_src(event, &ibs_data, &data);
+ if (event->attr.sample_type & PERF_SAMPLE_ADDR)
+ perf_ibs_get_data_addr(event, &ibs_data, &data);
}

/*
--
2.31.1
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