/* $NetBSD: pmc.c,v 1.14 2006/04/09 18:57:10 christos Exp $ */ /* * Copyright 2000 Wasabi Systems, Inc. * All rights reserved. * * Written by Frank van der Linden for Wasabi Systems, Inc. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed for the NetBSD Project by * Wasabi Systems, Inc. * 4. The name of Wasabi Systems, Inc. may not be used to endorse * or promote products derived from this software without specific prior * written permission. * * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL WASABI SYSTEMS, INC * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ #include #ifndef lint __RCSID("$NetBSD: pmc.c,v 1.14 2006/04/09 18:57:10 christos Exp $"); #endif #include #include #include #include #include #include #include #include #include #include #include struct pmc_name2val { const char *name; int val; int unit; }; static const struct pmc_name2val i586_names[] = { { "tlb-data-miss", PMC5_DATA_TLB_MISS, 0 }, { "tlb-ins-miss", PMC5_INST_TLB_MISS, 0 }, { "l1cache-ins-miss", PMC5_INST_CACHE_MISS, 0 }, { "l1cache-data-miss", PMC5_DATA_RW_MISS, 0 }, { "l1cache-data-miss-read", PMC5_DATA_READ_MISS, 0 }, { "l1cache-data-miss-write", PMC5_DATA_WRITE_MISS, 0 }, { "l1cache-writeback", PMC5_DATA_LINES_WBACK, 0 }, { "l1cache-writeback-hit", PMC5_WRITE_M_E, 0 }, { "l2cache-data-snoop", PMC5_DATA_CACHE_SNOOP, 0 }, { "l2cache-data-snoop-hit", PMC5_DATA_CACHE_SNOOP_HIT, 0 }, { "mem-read", PMC5_DATA_READ, 0 }, { "mem-write", PMC5_DATA_WRITE, 0 }, { "mem-access", PMC5_DATA_RW, 0 }, { "mem-access-both-pipes", PMC5_MEM_ACCESS_BOTH_PIPES, 0 }, { "mem-bank-conflicts", PMC5_BANK_CONFLICTS, 0 }, { "mem-misalign-ref", PMC5_MISALIGNED_DATA, 0 }, { "mem-uncached-read", PMC5_NONCACHE_MEM_READ, 0 }, { "seg-load-any", PMC5_SEGMENT_REG_LOAD, 0 }, { "branch", PMC5_BRANCHES, 0 }, { "branch-btb-hit", PMC5_BTB_HITS, 0 }, { "branch-taken", PMC5_BRANCH_TAKEN, 0 }, { "ins-read", PMC5_INST_READ, 0 }, { "ins-pipeline-flush", PMC5_PIPELINE_FLUSH, 0 }, { "ins-executed", PMC5_INST_EXECUTED, 0 }, { "ins-executed-vpipe", PMC5_INST_EXECUTED_V_PIPE, 0 }, { "ins-stall-agi", PMC5_AGI_STALL, 0 }, { "ins-stall-write", PMC5_WRITE_BACKUP_STALL, 0 }, { "ins-stall-data", PMC5_DATA_READ_STALL, 0 }, { "ins-stall-writeline", PMC5_WRITE_E_M_STALL, 0 }, { "bus-utilization", PMC5_BUS_UTILIZATION, 0 }, { "bus-locked", PMC5_LOCKED_BUS, 0 }, { "bus-io-cycle", PMC5_IO_CYCLE, 0 }, { "fpu-flops", PMC5_FLOPS, 0 }, { "int-hw", PMC5_HARDWARE_INTR, 0 }, { "break-match0", PMC5_BP0_MATCH, 0 }, { "break-match1", PMC5_BP1_MATCH, 0 }, { "break-match2", PMC5_BP2_MATCH, 0 }, { "break-match3", PMC5_BP3_MATCH, 0 }, }; static const struct pmc_name2val i686_names[] = { { "mem-refs", PMC6_DATA_MEM_REFS, 0 }, { "l1cache-lines", PMC6_DCU_LINES_IN, 0 }, { "l1cache-mlines", PMC6_DCU_M_LINES_IN, 0 }, { "l1cache-mlines-evict", PMC6_DCU_M_LINES_OUT, 0 }, { "l1cache-miss-wait", PMC6_DCU_MISS_OUTSTANDING, 0 }, { "ins-fetch", PMC6_IFU_IFETCH, 0 }, { "ins-fetch-misses", PMC6_IFU_IFETCH_MISS, 0 }, { "itlb-misses", PMC6_IFU_IFETCH_MISS, 0 }, { "insfetch-mem-stall", PMC6_IFU_MEM_STALL, 0 }, { "insfetch-decode-stall", PMC6_ILD_STALL, 0 }, { "l2cache-insfetch", PMC6_L2_IFETCH, 0x0f }, { "l2cache-data-loads", PMC6_L2_LD, 0x0f }, { "l2cache-data-stores", PMC6_L2_ST, 0x0f }, { "l2cache-lines", PMC6_L2_LINES_IN, 0 }, { "l2cache-lines-evict", PMC6_L2_LINES_OUT, 0 }, { "l2cache-mlines", PMC6_L2_M_LINES_INM, 0 }, { "l2cache-mlines-evict", PMC6_L2_M_LINES_OUTM, 0x0f }, { "l2cache-reqs", PMC6_L2_RQSTS, 0 }, { "l2cache-addr-strobes", PMC6_L2_ADS, 0 }, { "l2cache-data-busy", PMC6_L2_DBUS_BUSY, 0 }, { "l2cache-data-busy-read", PMC6_L2_DBUS_BUSY_RD }, { "bus-drdy-clocks-self", PMC6_BUS_DRDY_CLOCKS, 0x00 }, { "bus-drdy-clocks-any", PMC6_BUS_DRDY_CLOCKS, 0x20 }, { "bus-lock-clocks-self", PMC6_BUS_LOCK_CLOCKS, 0x00 }, { "bus-lock-clocks-any", PMC6_BUS_LOCK_CLOCKS, 0x20 }, { "bus-req-outstanding-self", PMC6_BUS_REQ_OUTSTANDING, 0x00 }, { "bus-req-outstanding-any", PMC6_BUS_REQ_OUTSTANDING, 0x20 }, { "bus-burst-reads-self", PMC6_BUS_TRAN_BRD, 0x00 }, { "bus-burst-reads-any", PMC6_BUS_TRAN_BRD, 0x20 }, { "bus-read-for-ownership-self",PMC6_BUS_TRAN_RFO, 0x00 }, { "bus-read-for-ownership-any", PMC6_BUS_TRAN_RFO, 0x20 }, { "bus-write-back-self", PMC6_BUS_TRANS_WB, 0x00 }, { "bus-write-back-any", PMC6_BUS_TRANS_WB, 0x20 }, { "bus-ins-fetches-self", PMC6_BUS_TRAN_IFETCH, 0x00 }, { "bus-ins-fetches-any", PMC6_BUS_TRAN_IFETCH, 0x20 }, { "bus-invalidates-self", PMC6_BUS_TRAN_INVAL, 0x00 }, { "bus-invalidates-any", PMC6_BUS_TRAN_INVAL, 0x20 }, { "bus-partial-writes-self", PMC6_BUS_TRAN_PWR, 0x00 }, { "bus-partial-writes-any", PMC6_BUS_TRAN_PWR, 0x20 }, { "bus-partial-trans-self", PMC6_BUS_TRANS_P, 0x00 }, { "bus-partial-trans-any", PMC6_BUS_TRANS_P, 0x20 }, { "bus-io-trans-self", PMC6_BUS_TRANS_IO, 0x00 }, { "bus-io-trans-any", PMC6_BUS_TRANS_IO, 0x20 }, { "bus-deferred-trans-self", PMC6_BUS_TRAN_DEF, 0x00 }, { "bus-deferred-trans-any", PMC6_BUS_TRAN_DEF, 0x20 }, { "bus-burst-trans-self", PMC6_BUS_TRAN_BURST, 0x00 }, { "bus-burst-trans-any", PMC6_BUS_TRAN_BURST, 0x20 }, { "bus-total-trans-self", PMC6_BUS_TRAN_ANY, 0x00 }, { "bus-total-trans-any", PMC6_BUS_TRAN_ANY, 0x20 }, { "bus-mem-trans-self", PMC6_BUS_TRAN_MEM, 0x00 }, { "bus-mem-trans-any", PMC6_BUS_TRAN_MEM, 0x20 }, { "bus-recv-cycles", PMC6_BUS_DATA_RCV, 0 }, { "bus-bnr-cycles", PMC6_BUS_BNR_DRV, 0 }, { "bus-hit-cycles", PMC6_BUS_HIT_DRV, 0 }, { "bus-hitm-cycles", PMC6_BUS_HITM_DRDV, 0 }, { "bus-snoop-stall", PMC6_BUS_SNOOP_STALL, 0 }, { "fpu-flops", PMC6_FLOPS, 0 }, { "fpu-comp-ops", PMC6_FP_COMP_OPS_EXE, 0 }, { "fpu-except-assist", PMC6_FP_ASSIST, 0 }, { "fpu-mul", PMC6_MUL, 0 }, { "fpu-div", PMC6_DIV, 0 }, { "fpu-div-busy", PMC6_CYCLES_DIV_BUSY, 0 }, { "mem-sb-blocks", PMC6_LD_BLOCKS, 0 }, { "mem-sb-drains", PMC6_SB_DRAINS, 0 }, { "mem-misalign-ref", PMC6_MISALIGN_MEM_REF, 0 }, { "ins-pref-dispatch-nta", PMC6_EMON_KNI_PREF_DISPATCHED, 0x01 }, { "ins-pref-dispatch-t1", PMC6_EMON_KNI_PREF_DISPATCHED, 0x01 }, { "ins-pref-dispatch-t2", PMC6_EMON_KNI_PREF_DISPATCHED, 0x02 }, { "ins-pref-dispatch-weak", PMC6_EMON_KNI_PREF_DISPATCHED, 0x03 }, { "ins-pref-miss-nta", PMC6_EMON_KNI_PREF_MISS, 0x01 }, { "ins-pref-miss-t1", PMC6_EMON_KNI_PREF_MISS, 0x01 }, { "ins-pref-miss-t2", PMC6_EMON_KNI_PREF_MISS, 0x02 }, { "ins-pref-miss-weak", PMC6_EMON_KNI_PREF_MISS, 0x03 }, { "ins-retired", PMC6_INST_RETIRED, 0 }, { "uops-retired", PMC6_UOPS_RETIRED, 0 }, { "ins-decoded", PMC6_INST_DECODED, 0 }, { "ins-stream-retired-packed-scalar", PMC6_EMON_KNI_INST_RETIRED, 0x00 }, { "ins-stream-retired-scalar", PMC6_EMON_KNI_INST_RETIRED, 0x01 }, { "ins-stream-comp-retired-packed-scalar", PMC6_EMON_KNI_COMP_INST_RET, 0x00 }, { "ins-stream-comp-retired--scalar", PMC6_EMON_KNI_COMP_INST_RET, 0x01 }, { "int-hw", PMC6_HW_INT_RX, 0 }, { "int-cycles-masked", PMC6_CYCLES_INT_MASKED, 0 }, { "int-cycles-masked-pending", PMC6_CYCLES_INT_PENDING_AND_MASKED, 0 }, { "branch-retired", PMC6_BR_INST_RETIRED, 0 }, { "branch-miss-retired", PMC6_BR_MISS_PRED_RETIRED, 0 }, { "branch-taken-retired", PMC6_BR_TAKEN_RETIRED, 0 }, { "branch-taken-mispred-retired", PMC6_BR_MISS_PRED_TAKEN_RET, 0 }, { "branch-decoded", PMC6_BR_INST_DECODED, 0 }, { "branch-btb-miss", PMC6_BTB_MISSES, 0 }, { "branch-bogus", PMC6_BR_BOGUS, 0 }, { "branch-baclear", PMC6_BACLEARS, 0 }, { "stall-resource", PMC6_RESOURCE_STALLS, 0 }, { "stall-partial", PMC6_PARTIAL_RAT_STALLS, 0 }, { "seg-loads", PMC6_SEGMENT_REG_LOADS, 0 }, { "unhalted-cycles", PMC6_CPU_CLK_UNHALTED, 0 }, { "mmx-exec", PMC6_MMX_INSTR_EXEC, 0 }, { "mmx-sat-exec", PMC6_MMX_SAT_INSTR_EXEC, 0 }, { "mmx-uops-exec", PMC6_MMX_UOPS_EXEC, 0x0f }, { "mmx-exec-packed-mul", PMC6_MMX_INSTR_TYPE_EXEC, 0x01 }, { "mmx-exec-packed-shift", PMC6_MMX_INSTR_TYPE_EXEC, 0x02 }, { "mmx-exec-pack-ops", PMC6_MMX_INSTR_TYPE_EXEC, 0x04 }, { "mmx-exec-unpack-ops", PMC6_MMX_INSTR_TYPE_EXEC, 0x08 }, { "mmx-exec-packed-logical", PMC6_MMX_INSTR_TYPE_EXEC, 0x10 }, { "mmx-exec-packed-arith", PMC6_MMX_INSTR_TYPE_EXEC, 0x20 }, { "mmx-trans-mmx-float", PMC6_FP_MMX_TRANS, 0x00 }, { "mmx-trans-float-mmx", PMC6_FP_MMX_TRANS, 0x01 }, { "mmx-assist", PMC6_MMX_ASSIST, 0 }, { "mmx-retire", PMC6_MMX_INSTR_RET, 0 }, { "seg-rename-stalls-es", PMC6_SEG_RENAME_STALLS, 0x01 }, { "seg-rename-stalls-ds", PMC6_SEG_RENAME_STALLS, 0x02 }, { "seg-rename-stalls-fs", PMC6_SEG_RENAME_STALLS, 0x04 }, { "seg-rename-stalls-gs", PMC6_SEG_RENAME_STALLS, 0x08 }, { "seg-rename-stalls-all", PMC6_SEG_RENAME_STALLS, 0x0f }, { "seg-rename-es", PMC6_SEG_REG_RENAMES, 0x01 }, { "seg-rename-ds", PMC6_SEG_REG_RENAMES, 0x02 }, { "seg-rename-fs", PMC6_SEG_REG_RENAMES, 0x04 }, { "seg-rename-gs", PMC6_SEG_REG_RENAMES, 0x08 }, { "seg-rename-all", PMC6_SEG_REG_RENAMES, 0x0f }, { "seg-rename-retire", PMC6_RET_SEG_RENAMES, 0 }, }; static const struct pmc_name2val k7_names[] = { { "seg-load-all", K7_SEGMENT_REG_LOADS, 0x7f }, { "seg-load-es", K7_SEGMENT_REG_LOADS, 0x01 }, { "seg-load-cs", K7_SEGMENT_REG_LOADS, 0x02 }, { "seg-load-ss", K7_SEGMENT_REG_LOADS, 0x04 }, { "seg-load-ds", K7_SEGMENT_REG_LOADS, 0x08 }, { "seg-load-fs", K7_SEGMENT_REG_LOADS, 0x10 }, { "seg-load-gs", K7_SEGMENT_REG_LOADS, 0x20 }, { "seg-load-hs", K7_SEGMENT_REG_LOADS, 0x40 }, { "seg-load-stall", K7_SEGMENT_LOAD_STALL, 0 }, { "l1cache-access", K7_DATA_CACHE_ACCESS, 0 }, { "l1cache-miss", K7_DATA_CACHE_MISS, 0 }, { "l1cache-refill", K7_DATA_CACHE_REFILL, 0x1f }, { "l1cache-refill-invalid", K7_DATA_CACHE_REFILL, 0x01 }, { "l1cache-refill-shared", K7_DATA_CACHE_REFILL, 0x02 }, { "l1cache-refill-exclusive", K7_DATA_CACHE_REFILL, 0x04 }, { "l1cache-refill-owner", K7_DATA_CACHE_REFILL, 0x08 }, { "l1cache-refill-modified", K7_DATA_CACHE_REFILL, 0x10 }, { "l1cache-load", K7_DATA_CACHE_REFILL_SYSTEM, 0x1f }, { "l1cache-load-invalid", K7_DATA_CACHE_REFILL_SYSTEM, 0x01 }, { "l1cache-load-shared", K7_DATA_CACHE_REFILL_SYSTEM, 0x02 }, { "l1cache-load-exclusive", K7_DATA_CACHE_REFILL_SYSTEM, 0x04 }, { "l1cache-load-owner", K7_DATA_CACHE_REFILL_SYSTEM, 0x08 }, { "l1cache-load-modified", K7_DATA_CACHE_REFILL_SYSTEM, 0x10 }, { "l1cache-writeback", K7_DATA_CACHE_WBACK, 0x1f }, { "l1cache-writeback-invalid", K7_DATA_CACHE_WBACK, 0x01 }, { "l1cache-writeback-shared", K7_DATA_CACHE_WBACK, 0x02 }, { "l1cache-writeback-exclusive",K7_DATA_CACHE_WBACK, 0x04 }, { "l1cache-writeback-owner", K7_DATA_CACHE_WBACK, 0x08 }, { "l1cache-writeback-modified", K7_DATA_CACHE_WBACK, 0x10 }, { "l2cache-access", K7_L2_REQUEST, 0xff }, { "l2cache-tag-read", K7_L2_REQUEST, 0x01 }, { "l2cache-tag-write", K7_L2_REQUEST, 0x02 }, { "l2cache-inst-read", K7_L2_REQUEST, 0x04 }, { "l2cache-inst-load", K7_L2_REQUEST, 0x08 }, { "l2cache-data-store", K7_L2_REQUEST, 0x10 }, { "l2cache-data-loadmem", K7_L2_REQUEST, 0x20 }, { "l2cache-data-write", K7_L2_REQUEST, 0x40 }, { "l2cache-data-move", K7_L2_REQUEST, 0x80 }, { "l2cache-access-busy", K7_L2_REQUEST_BUSY, 0 }, { "l2cache-hit", K7_L2_DTLB_HIT, 0 }, { "l2cache-miss", K7_L2_DTLB_MISS, 0 }, { "mem-misalign-ref", K7_MISALIGNED_DATA_REF, 0 }, { "mem-access", K7_SYSTEM_REQUEST, 0 }, { "mem-access-uc", K7_SYSTEM_REQUEST_TYPE, 0x01 }, { "mem-access-wc", K7_SYSTEM_REQUEST_TYPE, 0x04 }, { "mem-access-wt", K7_SYSTEM_REQUEST_TYPE, 0x10 }, { "mem-access-wp", K7_SYSTEM_REQUEST_TYPE, 0x20 }, { "mem-access-wb", K7_SYSTEM_REQUEST_TYPE, 0x40 }, { "ins-fetch", K7_IFU_IFETCH, 0 }, { "ins-fetch-miss", K7_IFU_IFETCH_MISS, 0 }, { "ins-refill-l2", K7_IFU_REFILL_FROM_L2, 0 }, { "ins-refill-mem", K7_IFU_REFILL_FROM_SYSTEM, 0 }, { "ins-fetch-stall", K7_IFU_STALL, 0 }, { "ins-retired", K7_RETIRED_INST, 0 }, { "ins-empty", K7_INSTRUCTION_DECODER_EMPTY, 0 }, { "itlb-miss-l1", K7_ITLB_L1_MISS, 0 }, { "itlb-miss-l2", K7_ITLB_L2_MISS, 0 }, { "ops-retired", K7_RETIRED_OPS, 0 }, { "branch-retired", K7_RETIRED_BRANCHES, 0 }, { "branch-miss-retired", K7_RETIRED_BRANCH_MISPREDICTED, 0 }, { "branch-taken-retired", K7_RETIRED_TAKEN_BRANCH, 0 }, { "branch-taked-miss-retired", K7_RETIRED_TAKEN_BRANCH_MISPREDICTED, 0 }, { "branch-far-retired", K7_RETIRED_FAR_CONTROL_TRANSFER, 0 }, { "branch-resync-retired", K7_RETIRED_RESYNC_BRANCH, 0 }, { "branch-near-retired", K7_RETIRED_NEAR_RETURNS, 0 }, { "branch-near-miss-retired", K7_RETIRED_NEAR_RETURNS_MISPREDICTED, 0 }, { "branch-indirect-miss-retired", K7_RETIRED_INDIRECT_MISPREDICTED, 0 }, { "int-hw", K7_HW_INTR_RECV, 0 }, { "int-cycles-masked", K7_CYCLES_INT_MASKED, 0 }, { "int-cycles-masked-pending", K7_CYCLES_INT_PENDING_AND_MASKED, 0 }, { "break-match0", K7_BP0_MATCH, 0 }, { "break-match1", K7_BP1_MATCH, 0 }, { "break-match2", K7_BP2_MATCH, 0 }, { "break-match3", K7_BP3_MATCH, 0 }, }; static struct pmc_name2val_cpus { int type; const struct pmc_name2val *pmc_names; int size; } pmc_cpus[] = { { PMC_TYPE_I586, i586_names, sizeof(i586_names)/sizeof(struct pmc_name2val) }, { PMC_TYPE_I686, i686_names, sizeof(i686_names)/sizeof(struct pmc_name2val) }, { PMC_TYPE_K7, k7_names, sizeof(k7_names)/sizeof(struct pmc_name2val) }, }; static const struct pmc_name2val_cpus * pmc_lookup_cpu(int type) { int i; for (i = 0; i < sizeof(pmc_cpus)/sizeof(struct pmc_name2val_cpus); i++) { if (pmc_cpus[i].type == type) return (&pmc_cpus[i]); } return (NULL); } static const struct pmc_name2val * find_pmc_name(const struct pmc_name2val_cpus *pncp, const char *name) { int i; const struct pmc_name2val *pnp = NULL; for (i = 0; i < pncp->size; i++) { if (strcmp(pncp->pmc_names[i].name, name) == 0) { pnp = &pncp->pmc_names[i]; break; } } return (pnp); } static void list_pmc_names(const struct pmc_name2val_cpus *pncp) { int i, n, left, pairs; (void)printf("Supported performance counter events:\n"); n = pncp->size; pairs = n / 2; left = n % 2; for (i = 0; i < pairs; i++) (void)printf(" %37s %37s\n", pncp->pmc_names[i * 2].name, pncp->pmc_names[i * 2 + 1].name); if (left != 0) (void)printf("\t%37s\n", pncp->pmc_names[n - 1].name); } static void usage(void) __attribute__((__noreturn__)); static void usage(void) { (void)fprintf(stderr, "usage: %s -h\n" " %s -C\n" " %s -c command [options] ...\n", getprogname(), getprogname(), getprogname()); exit(1); } int main(int argc, char **argv) { int c, status, ret0, ret1, errn0, errn1; const char *event = "unknown"; const struct pmc_name2val_cpus *pncp; const struct pmc_name2val *pnp; struct i386_pmc_info_args pi; struct i386_pmc_startstop_args pss0, pss1; struct i386_pmc_read_args pr0, pr1; pid_t pid; setprogname(argv[0]); errn0 = errn1 = 0; if (i386_pmc_info(&pi) < 0) errx(2, "PMC support is not compiled into the kernel"); pncp = pmc_lookup_cpu(pi.type); if (pncp == NULL) errx(3, "PMC counters are not supported for your CPU (0x%x)", pi.type); pnp = NULL; while ((c = getopt(argc, argv, "Cc:h")) != -1) { switch (c) { case 'C': if (argc != 2) usage(); /* * Just clear both counters. Useful if * a previous run got killed and did not * clean up. */ (void)memset(&pss0, 0, sizeof pss0); (void)i386_pmc_startstop(&pss0); pss0.counter = 1; (void)i386_pmc_startstop(&pss0); return 0; case 'c': event = optarg; pnp = find_pmc_name(pncp, event); break; case 'h': if (argc != 2) usage(); list_pmc_names(pncp); return 0; default: usage(); } } if (pnp == NULL || argc <= optind) usage(); (void)memset(&pss0, 0, sizeof pss0); (void)memset(&pss1, 0, sizeof pss1); pss0.event = pss1.event = pnp->val; pss0.unit = pss1.unit = pnp->unit; pss0.flags = PMC_SETUP_USER; pss0.counter = 0; pss1.flags = PMC_SETUP_KERNEL; pss1.counter = 1; /* * XXX should catch signals and tidy up in the parent. */ if (i386_pmc_startstop(&pss0) < 0) err(4, "pmc_start user"); pss0.flags = 0; if (i386_pmc_startstop(&pss1) < 0) err(5, "pmc_start kernel"); pss1.flags = 0; pid = vfork(); switch(pid) { case -1: err(5, "vfork"); case 0: (void)execvp(argv[optind], &argv[optind]); err(6, "execvp"); } (void)signal(SIGINT, SIG_IGN); (void)signal(SIGQUIT, SIG_IGN); if (waitpid(pid, &status, 0) == -1) err(6, "waitpid"); if (!WIFEXITED(status)) return 0; /* * Do not immediately exit on errors below. The counters * must be stopped first, or subsequent runs will get * EBUSY. */ pr0.counter = 0; ret0 = i386_pmc_read(&pr0); if (ret0 < 0) errn0 = errno; pr1.counter = 1; ret1 = i386_pmc_read(&pr1); if (ret1 < 0) errn1 = errno; if (i386_pmc_startstop(&pss0) < 0) warn("pmc_stop user"); if (i386_pmc_startstop(&pss1) < 0) warn("pmc_stop kernel"); if (ret0 < 0) { errno = errn0; err(6, "pmc_read"); } if (ret1 < 0) { errno = errn1; err(7, "pmc_read"); } (void)printf("%s: user %llu kernel %llu\n", event, pr0.val, pr1.val); return 0; }