tools/perf/util/amd-sample-raw.c

Source file repositories/reference/linux-study-clean/tools/perf/util/amd-sample-raw.c

File Facts

System
Linux kernel
Corpus path
tools/perf/util/amd-sample-raw.c
Extension
.c
Size
12591 bytes
Lines
391
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: implementation source
Status
source implementation candidate

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

if (reg.dc_phy_addr_valid) {
			int idx = (reg.dc_l1tlb_hit_1g << 1) | reg.dc_l1tlb_hit_2m;

			snprintf(dc_l1_l2tlb_miss_str, sizeof(dc_l1_l2tlb_miss_str),
				 " DcL1TlbMiss %d DcL2TlbMiss %d",
				 reg.dc_l1tlb_miss, reg.dc_l2tlb_miss);
			snprintf(dc_page_size_str, sizeof(dc_page_size_str),
				 " DcPageSize %4s", dc_page_sizes[idx]);
		}
	} else {
		snprintf(dc_l1_l2tlb_miss_str, sizeof(dc_l1_l2tlb_miss_str),
			 " DcL1TlbMiss %d DcL2TlbMiss %d",
			 reg.dc_l1tlb_miss, reg.dc_l2tlb_miss);
		snprintf(dc_l1tlb_hit_str, sizeof(dc_l1tlb_hit_str),
			 " DcL1TlbHit2M %d DcL1TlbHit1G %d",
			 reg.dc_l1tlb_hit_2m, reg.dc_l1tlb_hit_1g);
		snprintf(dc_l2tlb_hit_2m_str, sizeof(dc_l2tlb_hit_2m_str),
			 " DcL2TlbHit2M %d", reg.dc_l2tlb_hit_2m);
		snprintf(dc_l2tlb_hit_1g_str, sizeof(dc_l2tlb_hit_1g_str),
			 " DcL2TlbHit1G %d", reg.dc_l2_tlb_hit_1g);
	}

	printf("ibs_op_data3:\t%016llx LdOp %d StOp %d%s%s%s DcMiss %d DcMisAcc %d "
		"DcWcMemAcc %d DcUcMemAcc %d DcLockedOp %d DcMissNoMabAlloc %d "
		"DcLinAddrValid %d DcPhyAddrValid %d%s%s SwPf %d%s%s "
		"DcMissLat %5d TlbRefillLat %5d\n",
		reg.val, reg.ld_op, reg.st_op, dc_l1_l2tlb_miss_str,
		dtlb_pgsize_cap ? dc_page_size_str : dc_l1tlb_hit_str,
		dc_l2tlb_hit_2m_str, reg.dc_miss, reg.dc_mis_acc, reg.dc_wc_mem_acc,
		reg.dc_uc_mem_acc, reg.dc_locked_op, reg.dc_miss_no_mab_alloc,
		reg.dc_lin_addr_valid, reg.dc_phy_addr_valid, dc_l2tlb_hit_1g_str,
		l2_miss_str, reg.sw_pf, op_mem_width_str, op_dc_miss_open_mem_reqs_str,
		reg.dc_miss_lat, reg.tlb_refill_lat);
}

/*
 * IBS Op/Execution MSRs always saved, in order, are:
 * IBS_OP_CTL, IBS_OP_RIP, IBS_OP_DATA, IBS_OP_DATA2,
 * IBS_OP_DATA3, IBS_DC_LINADDR, IBS_DC_PHYSADDR, BP_IBSTGT_RIP
 */
static void amd_dump_ibs_op(struct perf_sample *sample)
{
	struct perf_ibs_data *data = sample->raw_data;
	union ibs_op_ctl *op_ctl = (union ibs_op_ctl *)data->data;
	__u64 *rip = (__u64 *)op_ctl + 1;
	union ibs_op_data *op_data = (union ibs_op_data *)(rip + 1);
	union ibs_op_data3 *op_data3 = (union ibs_op_data3 *)(rip + 3);

	pr_ibs_op_ctl(*op_ctl);
	if (!op_data->op_rip_invalid)
		printf("IbsOpRip:\t%016llx\n", *rip);
	pr_ibs_op_data(*op_data);
	/*
	 * Erratum #1293: ignore op_data2 if DcMissNoMabAlloc or SwPf are set
	 */
	if (!(cpu_family == 0x19 && cpu_model < 0x10 &&
	      (op_data3->dc_miss_no_mab_alloc || op_data3->sw_pf)))
		pr_ibs_op_data2(*(union ibs_op_data2 *)(rip + 2));
	pr_ibs_op_data3(*op_data3);
	if (op_data3->dc_lin_addr_valid)
		printf("IbsDCLinAd:\t%016llx\n", *(rip + 4));
	if (op_data3->dc_phy_addr_valid)
		printf("IbsDCPhysAd:\t%016llx\n", *(rip + 5));
	if (op_data->op_brn_ret && *(rip + 6))
		printf("IbsBrTarget:\t%016llx\n", *(rip + 6));
}

/*
 * IBS Fetch MSRs always saved, in order, are:
 * IBS_FETCH_CTL, IBS_FETCH_LINADDR, IBS_FETCH_PHYSADDR, IC_IBS_EXTD_CTL
 */
static void amd_dump_ibs_fetch(struct perf_sample *sample)
{
	struct perf_ibs_data *data = sample->raw_data;
	union ibs_fetch_ctl *fetch_ctl = (union ibs_fetch_ctl *)data->data;
	__u64 *addr = (__u64 *)fetch_ctl + 1;
	union ic_ibs_extd_ctl *extd_ctl = (union ic_ibs_extd_ctl *)addr + 2;

	pr_ibs_fetch_ctl(*fetch_ctl);
	printf("IbsFetchLinAd:\t%016llx\n", *addr++);
	if (fetch_ctl->phy_addr_valid)
		printf("IbsFetchPhysAd:\t%016llx\n", *addr);
	pr_ic_ibs_extd_ctl(*extd_ctl);
}

/*
 * Test for enable and valid bits in captured control MSRs.
 */
static bool is_valid_ibs_fetch_sample(struct perf_sample *sample)
{

Annotation

Implementation Notes