Differential D8234 Diff 21326 usr.sbin/pmcstat/pmcstat.c

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usr.sbin/pmcstat/pmcstat.c

Show First 20 Lines • Show All 491 Lines • ▼ Show 20 Lines	errx(EX_USAGE,
"\t performance monitoring counters.\n"		"\t performance monitoring counters.\n"
"\t Options include:\n"		"\t Options include:\n"
"\t -C\t\t (toggle) show cumulative counts\n"		"\t -C\t\t (toggle) show cumulative counts\n"
"\t -D path\t create profiles in directory \"path\"\n"		"\t -D path\t create profiles in directory \"path\"\n"
"\t -E\t\t (toggle) show counts at process exit\n"		"\t -E\t\t (toggle) show counts at process exit\n"
"\t -F file\t write a system-wide callgraph (Kcachegrind format)"		"\t -F file\t write a system-wide callgraph (Kcachegrind format)"
" to \"file\"\n"		" to \"file\"\n"
"\t -G file\t write a system-wide callgraph to \"file\"\n"		"\t -G file\t write a system-wide callgraph to \"file\"\n"
		"\t -K dir-list\t set the paths to check for kernel modules\n"
		wblockUnsubmitted Not Done Inline Actions "\t -K dir-list\t set the search path for kernel modules\n" wblock: ```"\t -K dir-list\t set the search path for kernel modules\n"
"\t -M file\t print executable/gmon file map to \"file\"\n"		"\t -M file\t print executable/gmon file map to \"file\"\n"
"\t -N\t\t (toggle) capture callchains\n"		"\t -N\t\t (toggle) capture callchains\n"
"\t -O file\t send log output to \"file\"\n"		"\t -O file\t send log output to \"file\"\n"
"\t -P spec\t allocate a process-private sampling PMC\n"		"\t -P spec\t allocate a process-private sampling PMC\n"
"\t -R file\t read events from \"file\"\n"		"\t -R file\t read events from \"file\"\n"
"\t -S spec\t allocate a system-wide sampling PMC\n"		"\t -S spec\t allocate a system-wide sampling PMC\n"
"\t -T\t\t start in top mode\n"		"\t -T\t\t start in top mode\n"
"\t -W\t\t (toggle) show counts per context switch\n"		"\t -W\t\t (toggle) show counts per context switch\n"
▲ Show 20 Lines • Show All 52 Lines • ▼ Show 20 Lines	main(int argc, char **argv)
int c, check_driver_stats, current_sampling_count;		int c, check_driver_stats, current_sampling_count;
int do_callchain, do_descendants, do_logproccsw, do_logprocexit;		int do_callchain, do_descendants, do_logproccsw, do_logprocexit;
int do_print, do_read;		int do_print, do_read;
size_t len;		size_t len;
int graphdepth;		int graphdepth;
int pipefd[2], rfd;		int pipefd[2], rfd;
int use_cumulative_counts;		int use_cumulative_counts;
short cf, cb;		short cf, cb;
char end, tmp;		char end, modpath, mp, tmp;
const char errmsg, graphfilename;		const char errmsg, graphfilename;
enum pmcstat_state runstate;		enum pmcstat_state runstate;
struct pmc_driverstats ds_start, ds_end;		struct pmc_driverstats ds_start, ds_end;
struct pmcstat_ev *ev;		struct pmcstat_ev *ev;
		struct pmcstat_path *pp;
struct sigaction sa;		struct sigaction sa;
struct kevent kev;		struct kevent kev;
struct winsize ws;		struct winsize ws;
struct stat sb;		struct stat sb;
char buffer[PATH_MAX];		char buffer[PATH_MAX];

check_driver_stats = 0;		check_driver_stats = 0;
current_sampling_count = DEFAULT_SAMPLE_COUNT;		current_sampling_count = DEFAULT_SAMPLE_COUNT;
Show All 21 Lines	main(int argc, char **argv)
args.pa_ctdumpinstr = 1;		args.pa_ctdumpinstr = 1;
args.pa_topmode = PMCSTAT_TOP_DELTA;		args.pa_topmode = PMCSTAT_TOP_DELTA;
args.pa_toptty = 0;		args.pa_toptty = 0;
args.pa_topcolor = 0;		args.pa_topcolor = 0;
args.pa_mergepmc = 0;		args.pa_mergepmc = 0;
args.pa_duration = 0.0;		args.pa_duration = 0.0;
STAILQ_INIT(&args.pa_events);		STAILQ_INIT(&args.pa_events);
SLIST_INIT(&args.pa_targets);		SLIST_INIT(&args.pa_targets);
		STAILQ_INIT(&args.pa_modules);
bzero(&ds_start, sizeof(ds_start));		bzero(&ds_start, sizeof(ds_start));
bzero(&ds_end, sizeof(ds_end));		bzero(&ds_end, sizeof(ds_end));
ev = NULL;		ev = NULL;
CPU_ZERO(&cpumask);		CPU_ZERO(&cpumask);

/* Default to using the running system kernel. */		/* Default to using the running system kernel. */
len = 0;		len = 0;
if (sysctlbyname("kern.bootfile", NULL, &len, NULL, 0) == -1)		if (sysctlbyname("kern.bootfile", NULL, &len, NULL, 0) == -1)
err(EX_OSERR, "ERROR: Cannot determine path of running kernel");		err(EX_OSERR, "ERROR: Cannot determine path of running kernel");
args.pa_kernel = malloc(len);		args.pa_kernel = malloc(len);
if (args.pa_kernel == NULL)		if (args.pa_kernel == NULL)
errx(EX_SOFTWARE, "ERROR: Out of memory.");		errx(EX_SOFTWARE, "ERROR: Out of memory.");
if (sysctlbyname("kern.bootfile", args.pa_kernel, &len, NULL, 0) == -1)		if (sysctlbyname("kern.bootfile", args.pa_kernel, &len, NULL, 0) == -1)
err(EX_OSERR, "ERROR: Cannot determine path of running kernel");		err(EX_OSERR, "ERROR: Cannot determine path of running kernel");

		len = 0;
		if (sysctlbyname("kern.module_path", NULL, &len, NULL, 0) == -1)
		err(EX_OSERR,
		"ERROR: Cannot determine running kernel module paths");
		args.pa_module_path = malloc(len);
		if (args.pa_module_path == NULL)
		errx(EX_SOFTWARE, "ERROR: Out of memory.");
		if (sysctlbyname("kern.module_path", args.pa_module_path, &len, NULL,
		0) == -1)
		err(EX_OSERR,
		"ERROR: Cannot determine running kernel module paths");

/*		/*
* The initial CPU mask specifies the root mask of this process		* The initial CPU mask specifies the root mask of this process
* which is usually all CPUs in the system.		* which is usually all CPUs in the system.
*/		*/
if (cpuset_getaffinity(CPU_LEVEL_ROOT, CPU_WHICH_PID, -1,		if (cpuset_getaffinity(CPU_LEVEL_ROOT, CPU_WHICH_PID, -1,
sizeof(rootmask), &rootmask) == -1)		sizeof(rootmask), &rootmask) == -1)
err(EX_OSERR, "ERROR: Cannot determine the root set of CPUs");		err(EX_OSERR, "ERROR: Cannot determine the root set of CPUs");
CPU_COPY(&rootmask, &cpumask);		CPU_COPY(&rootmask, &cpumask);

while ((option = getopt(argc, argv,		while ((option = getopt(argc, argv,
"CD:EF:G:M:NO:P:R:S:TWa:c:def:gk:l:m:n:o:p:qr:s:t:vw:z:")) != -1)		"CD:EF:G:K:M:NO:P:R:S:TWa:c:def:gk:l:m:n:o:p:qr:s:t:vw:z:")) != -1)
switch (option) {		switch (option) {
case 'a': /* Annotate + callgraph */		case 'a': /* Annotate + callgraph */
args.pa_flags \|= FLAG_DO_ANNOTATE;		args.pa_flags \|= FLAG_DO_ANNOTATE;
args.pa_plugin = PMCSTAT_PL_ANNOTATE_CG;		args.pa_plugin = PMCSTAT_PL_ANNOTATE_CG;
graphfilename = optarg;		graphfilename = optarg;
break;		break;

case 'C': /* cumulative values */		case 'C': /* cumulative values */
▲ Show 20 Lines • Show All 61 Lines • ▼ Show 20 Lines	case 'k': /* pathname to the kernel */
free(args.pa_kernel);		free(args.pa_kernel);
args.pa_kernel = strdup(optarg);		args.pa_kernel = strdup(optarg);
if (args.pa_kernel == NULL)		if (args.pa_kernel == NULL)
errx(EX_SOFTWARE, "ERROR: Out of memory");		errx(EX_SOFTWARE, "ERROR: Out of memory");
args.pa_required \|= FLAG_DO_ANALYSIS;		args.pa_required \|= FLAG_DO_ANALYSIS;
args.pa_flags \|= FLAG_HAS_KERNELPATH;		args.pa_flags \|= FLAG_HAS_KERNELPATH;
break;		break;

		case 'K': /* paths to kernel modules */
		free(args.pa_module_path);
		args.pa_module_path = strdup(optarg);
		if (args.pa_module_path == NULL)
		errx(EX_SOFTWARE, "ERROR: Out of memory");
		break;

case 'l': /* time duration in seconds */		case 'l': /* time duration in seconds */
duration = strtod(optarg, &end);		duration = strtod(optarg, &end);
if (*end != '\0' \|\| duration <= 0)		if (*end != '\0' \|\| duration <= 0)
errx(EX_USAGE, "ERROR: Illegal duration time "		errx(EX_USAGE, "ERROR: Illegal duration time "
"value \"%s\".", optarg);		"value \"%s\".", optarg);
args.pa_flags \|= FLAG_HAS_DURATION;		args.pa_flags \|= FLAG_HAS_DURATION;
args.pa_duration = duration;		args.pa_duration = duration;
break;		break;
▲ Show 20 Lines • Show All 382 Lines • ▼ Show 20 Lines	(void) snprintf(buffer, sizeof(buffer), "%s%s",
args.pa_fsroot, args.pa_kernel);		args.pa_fsroot, args.pa_kernel);
if (stat(buffer, &sb) < 0)		if (stat(buffer, &sb) < 0)
err(EX_OSERR, "ERROR: Cannot stat \"%s\"",		err(EX_OSERR, "ERROR: Cannot stat \"%s\"",
buffer);		buffer);
if (!S_ISDIR(sb.st_mode))		if (!S_ISDIR(sb.st_mode))
errx(EX_USAGE,		errx(EX_USAGE,
"ERROR: \"%s\" is not a directory.",		"ERROR: \"%s\" is not a directory.",
buffer);		buffer);
		}

		/*
		* Build the kernel modules pathname list
		*/
		mp = args.pa_module_path;
		while ((modpath = strsep(&mp, ":;")) != NULL) {
		wblockUnsubmitted Not Done Inline Actions The man page says colon-separated, but it would probably be worth telling the user that semicolons can be used also (and that is what kern.module_path uses, for some reason I can't fathom). wblock: The man page says colon-separated, but it would probably be worth telling the user that…
		if (*modpath == '\0')
		continue;
		pp = malloc(sizeof(*pp));
		if (pp == NULL)
		errx(EX_SOFTWARE, "ERROR: Out of memory.");
		pp->pp_path = modpath;
		STAILQ_INSERT_TAIL(&args.pa_modules, pp, pp_next);
}		}

/*		/*
		stevekAuthorUnsubmitted Not Done Inline Actions Thinking about it, I wonder if this loop should ensure that each path component obtained is a fully qualified path and not relative. stevek: Thinking about it, I wonder if this loop should ensure that each path component obtained is a…
* If we have a callgraph be created, select the outputfile.		* If we have a callgraph be created, select the outputfile.
*/		*/
if (args.pa_flags & FLAG_DO_CALLGRAPHS) {		if (args.pa_flags & FLAG_DO_CALLGRAPHS) {
if (strcmp(graphfilename, "-") == 0)		if (strcmp(graphfilename, "-") == 0)
args.pa_graphfile = args.pa_printfile;		args.pa_graphfile = args.pa_printfile;
else {		else {
args.pa_graphfile = fopen(graphfilename, "w");		args.pa_graphfile = fopen(graphfilename, "w");
if (args.pa_graphfile == NULL)		if (args.pa_graphfile == NULL)
▲ Show 20 Lines • Show All 426 Lines • Show Last 20 Lines