diff options
Diffstat (limited to 'usr.sbin/pmcstat/pmcpl_annotate_cg.c')
| -rw-r--r-- | usr.sbin/pmcstat/pmcpl_annotate_cg.c | 127 |
1 files changed, 127 insertions, 0 deletions
diff --git a/usr.sbin/pmcstat/pmcpl_annotate_cg.c b/usr.sbin/pmcstat/pmcpl_annotate_cg.c new file mode 100644 index 0000000..e90bda1 --- /dev/null +++ b/usr.sbin/pmcstat/pmcpl_annotate_cg.c @@ -0,0 +1,127 @@ +/*- + * Copyright (c) 2005-2007, Joseph Koshy + * Copyright (c) 2007 The FreeBSD Foundation + * Copyright (c) 2014, Adrian Chadd, Netflix Inc. + * All rights reserved. + * + * Portions of this software were developed by A. Joseph Koshy under + * sponsorship from the FreeBSD Foundation and Google, 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. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``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 THE AUTHOR OR CONTRIBUTORS 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. + */ + +/* + * Transform a hwpmc(4) log into human readable form, and into + * gprof(1) compatible profiles. + */ + +#include <sys/cdefs.h> +__FBSDID("$FreeBSD$"); + +#include <sys/param.h> +#include <sys/endian.h> +#include <sys/gmon.h> +#include <sys/imgact_aout.h> +#include <sys/imgact_elf.h> +#include <sys/mman.h> +#include <sys/pmc.h> +#include <sys/queue.h> +#include <sys/socket.h> +#include <sys/stat.h> +#include <sys/wait.h> + +#include <netinet/in.h> + +#include <assert.h> +#include <err.h> +#include <errno.h> +#include <fcntl.h> +#include <gelf.h> +#include <libgen.h> +#include <limits.h> +#include <netdb.h> +#include <pmc.h> +#include <pmclog.h> +#include <sysexits.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> + +#include "pmcstat.h" +#include "pmcstat_log.h" +#include "pmcpl_annotate_cg.h" + +/* + * Record a callchain. + */ + +void +pmcpl_annotate_cg_process(struct pmcstat_process *pp, struct pmcstat_pmcrecord *pmcr, + uint32_t nsamples, uintfptr_t *cc, int usermode, uint32_t cpu) +{ + struct pmcstat_pcmap *map; + struct pmcstat_symbol *sym; + uintfptr_t newpc; + struct pmcstat_image *image; + int i; + char filename[PATH_MAX], funcname[PATH_MAX]; + unsigned sline; + + (void) pmcr; (void) nsamples; (void) usermode; (void) cpu; + + for (i = 0; i < (int) nsamples; i++) { + map = NULL; + sym = NULL; + image = NULL; + filename[0] = '\0'; + funcname[0] = '\0'; + sline = 0; + + map = pmcstat_process_find_map(usermode ? pp : pmcstat_kernproc, cc[i]); + if (map != NULL) { + assert(cc[i] >= map->ppm_lowpc && cc[i] < map->ppm_highpc); + image = map->ppm_image; + newpc = cc[i] - (map->ppm_lowpc + + (image->pi_vaddr - image->pi_start)); + sym = pmcstat_symbol_search(image, newpc); + } + + if (map != NULL && image != NULL && sym != NULL) { + (void) pmcstat_image_addr2line(image, cc[i], + filename, sizeof(filename), &sline, funcname, sizeof(funcname)); + } + + if (map != NULL && sym != NULL) { + fprintf(args.pa_graphfile, "%p %s %s:%d\n", + (void *)cc[i], + funcname, + filename, + sline); + } else { + fprintf(args.pa_graphfile, "%p <unknown> ??:0\n", + (void *) cc[i]); + } + } + fprintf(args.pa_graphfile, "--\n"); +} |
