Messages in this thread Patch in this message | | | From | Ravi Bangoria <> | Subject | [PATCH 05/13] perf/x86/amd: Support PERF_SAMPLE_ADDR using IBS_DC_LINADDR | Date | Wed, 25 May 2022 15:09:30 +0530 |
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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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