From c4a6baed5ecbc26e69d0ce297948839634ea6d36 Mon Sep 17 00:00:00 2001 From: adrian Date: Mon, 24 Feb 2014 02:43:58 +0000 Subject: Add a new option - 'a ' - which spits out annotated callgraphs. '-m ' spits out the given stream into (eg, /dev/stdout). However, it only resolves the first symbol; it doesn't parse the entire callgraph. If it fails to lookup then it doesn't print anything. '-a' instead does a symbol and file:line lookup for each address in each callgraph and will happily print the address itself with no lookup information if it couldn't look things up. This makes it much easier to pull out individual records from a pmc data file and look at the callgraph information without having to hand-decode the addresses. Sponsored by: Netflix, Inc. --- usr.sbin/pmcstat/pmcpl_annotate_cg.c | 126 +++++++++++++++++++++++++++++++++++ 1 file changed, 126 insertions(+) create mode 100644 usr.sbin/pmcstat/pmcpl_annotate_cg.c (limited to 'usr.sbin/pmcstat/pmcpl_annotate_cg.c') diff --git a/usr.sbin/pmcstat/pmcpl_annotate_cg.c b/usr.sbin/pmcstat/pmcpl_annotate_cg.c new file mode 100644 index 0000000..cda12d7 --- /dev/null +++ b/usr.sbin/pmcstat/pmcpl_annotate_cg.c @@ -0,0 +1,126 @@ +/*- + * Copyright (c) 2005-2007, Joseph Koshy + * Copyright (c) 2007 The FreeBSD Foundation + * 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 +__FBSDID("$FreeBSD$"); + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#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 ??:0\n", + (void *) cc[i]); + } + } + fprintf(args.pa_graphfile, "--\n"); +} -- cgit v1.1 From cb30543842dd950e796640b2adfdf7e014c39042 Mon Sep 17 00:00:00 2001 From: adrian Date: Mon, 24 Feb 2014 02:47:47 +0000 Subject: Add correct attributions. Sponsored by: Netflix, Inc. --- usr.sbin/pmcstat/pmcpl_annotate_cg.c | 1 + 1 file changed, 1 insertion(+) (limited to 'usr.sbin/pmcstat/pmcpl_annotate_cg.c') diff --git a/usr.sbin/pmcstat/pmcpl_annotate_cg.c b/usr.sbin/pmcstat/pmcpl_annotate_cg.c index cda12d7..e90bda1 100644 --- a/usr.sbin/pmcstat/pmcpl_annotate_cg.c +++ b/usr.sbin/pmcstat/pmcpl_annotate_cg.c @@ -1,6 +1,7 @@ /*- * 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 -- cgit v1.1