iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

tools/power turbostat: support "--hide C1" etc.

Browse Source 
Originally, the only way to hide the sysfs C-state statistics columns
was with "--hide sysfs".  This was because we process "--hide" before
we probe for those columns.

hack --hide to remember deferred hide requests, and apply
them when sysfs is probed.

"--hide sysfs" is still available as short-hand to refer to
the entire group of counters.

The down-side of this change is that we no longer error check for
bogus --hide column names.  But the user will quickly figure that
out if a column they mean to hide is still there...

Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Len Brown 2017-02-21 23:21:13 -05:00
parent 4e4e1e7c6e
commit dd778a5e6b
2 changed files with 73 additions and 44 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
tools/power/x86/turbostat/turbostat.8
View File

@ -114,7 +114,7 @@ This is ideal for remote debugging, use the "--out" option to save everything to
.PP
When you are not interested in all that information, and there are several ways to see only what you want. First the "--quiet" option will skip the configuration information, and turbostat will show only the counter columns. Second, you can reduce the columns with the "--hide" and "--show" options. If you use the "--show" option, then turbostat will show only the columns you list. If you use the "--hide" option, turbostat will show all columns, except the ones you list.
.PP
To find out what columns are available for --show and --hide, the "--list" option is available. Note, however, there is an exception. The C-state columns collected from sysfs "C1,C2,C3,C1%,C2%,C3%" are not built-in counters, but are discovered after --show and --hide are processed. You can use the special counter name "sysfs" to refer to all of them at the same time.
To find out what columns are available for --show and --hide, the "--list" option is available. For convenience, the special strings "sysfs" can be used to refer to all of the sysfs C-state counters at once:
.nf
sudo ./turbostat --show sysfs --quiet sleep 10
10.003837 sec

115
tools/power/x86/turbostat/turbostat.c
View File

@ -434,12 +434,45 @@ unsigned long long bic_present = BIC_sysfs;
#define BIC_PRESENT(COUNTER_BIT) (bic_present |= COUNTER_BIT)
#define BIC_NOT_PRESENT(COUNTER_BIT) (bic_present &= ~COUNTER_BIT)
#define MAX_DEFERRED 16
char *deferred_skip_names[MAX_DEFERRED];
int deferred_skip_index;
/*
* HIDE_LIST - hide this list of counters, show the rest [default]
* SHOW_LIST - show this list of counters, hide the rest
*/
enum show_hide_mode { SHOW_LIST, HIDE_LIST } global_show_hide_mode = HIDE_LIST;
void help(void)
{
fprintf(outf,
"Usage: turbostat [OPTIONS][(--interval seconds) | COMMAND ...]\n"
"\n"
"Turbostat forks the specified COMMAND and prints statistics\n"
"when COMMAND completes.\n"
"If no COMMAND is specified, turbostat wakes every 5-seconds\n"
"to print statistics, until interrupted.\n"
"--add add a counter\n"
" eg. --add msr0x10,u64,cpu,delta,MY_TSC\n"
"--cpu cpu-set limit output to summary plus cpu-set:\n"
" {core | package | j,k,l..m,n-p }\n"
"--quiet skip decoding system configuration header\n"
"--interval sec Override default 5-second measurement interval\n"
"--help print this help message\n"
"--list list column headers only\n"
"--out file create or truncate \"file\" for all output\n"
"--version print version information\n"
"\n"
"For more help, run \"man turbostat\"\n");
}
/*
* bic_lookup
* for all the strings in comma separate name_list,
* set the approprate bit in return value.
*/
unsigned long long bic_lookup(char *name_list)
unsigned long long bic_lookup(char *name_list, enum show_hide_mode mode)
{
int i;
unsigned long long retval = 0;
@ -459,8 +492,19 @@ unsigned long long bic_lookup(char *name_list)
}
}
if (i == MAX_BIC) {
fprintf(stderr, "Invalid counter name: %s\n", name_list);
exit(-1);
if (mode == SHOW_LIST) {
fprintf(stderr, "Invalid counter name: %s\n", name_list);
exit(-1);
}
deferred_skip_names[deferred_skip_index++] = name_list;
if (debug)
fprintf(stderr, "deferred \"%s\"\n", name_list);
if (deferred_skip_index >= MAX_DEFERRED) {
fprintf(stderr, "More than max %d un-recognized --skip options '%s'\n",
MAX_DEFERRED, name_list);
help();
exit(1);
}
}
name_list = comma;
@ -471,6 +515,7 @@ unsigned long long bic_lookup(char *name_list)
return retval;
}
void print_header(char *delim)
{
struct msr_counter *mp;
@ -502,20 +547,17 @@ void print_header(char *delim)
outp += sprintf(outp, "%sSMI", (printed++ ? delim : ""));
for (mp = sys.tp; mp; mp = mp->next) {
if (*delim == ',') {
outp += sprintf(outp, "%s%s", (printed++ ? delim : ""), "sysfs");
break;
}
if (mp->format == FORMAT_RAW) {
if (mp->width == 64)
outp += sprintf(outp, "%s%18.18s", delim, mp->name);
outp += sprintf(outp, "%s%18.18s", (printed++ ? delim : ""), mp->name);
else
outp += sprintf(outp, "%s%10.10s", delim, mp->name);
outp += sprintf(outp, "%s%10.10s", (printed++ ? delim : ""), mp->name);
} else {
if ((mp->type == COUNTER_ITEMS) && sums_need_wide_columns)
outp += sprintf(outp, "%s%8s", delim, mp->name);
outp += sprintf(outp, "%s%8s", (printed++ ? delim : ""), mp->name);
else
outp += sprintf(outp, "%s%s", delim, mp->name);
outp += sprintf(outp, "%s%s", (printed++ ? delim : ""), mp->name);
}
}
@ -4142,29 +4184,6 @@ void process_cpuid()
return;
}
void help()
{
fprintf(outf,
"Usage: turbostat [OPTIONS][(--interval seconds) | COMMAND ...]\n"
"\n"
"Turbostat forks the specified COMMAND and prints statistics\n"
"when COMMAND completes.\n"
"If no COMMAND is specified, turbostat wakes every 5-seconds\n"
"to print statistics, until interrupted.\n"
"--add add a counter\n"
" eg. --add msr0x10,u64,cpu,delta,MY_TSC\n"
"--cpu cpu-set limit output to summary plus cpu-set:\n"
" {core | package | j,k,l..m,n-p }\n"
"--quiet skip decoding system configuration header\n"
"--interval sec Override default 5-second measurement interval\n"
"--help print this help message\n"
"--list list column headers only\n"
"--out file create or truncate \"file\" for all output\n"
"--version print version information\n"
"\n"
"For more help, run \"man turbostat\"\n");
}
/*
* in /dev/cpu/ return success for names that are numbers
@ -4689,6 +4708,16 @@ next:
}
}
int is_deferred_skip(char *name)
{
int i;
for (i = 0; i < deferred_skip_index; ++i)
if (!strcmp(name, deferred_skip_names[i]))
return 1;
return 0;
}
void probe_sysfs(void)
{
char path[64];
@ -4720,6 +4749,9 @@ void probe_sysfs(void)
sprintf(path, "cpuidle/state%d/time", state);
if (is_deferred_skip(name_buf))
continue;
add_counter(0, path, name_buf, 64, SCOPE_CPU, COUNTER_USEC,
FORMAT_PERCENT, SYSFS_PERCPU);
}
@ -4741,6 +4773,9 @@ void probe_sysfs(void)
sprintf(path, "cpuidle/state%d/usage", state);
if (is_deferred_skip(name_buf))
continue;
add_counter(0, path, name_buf, 64, SCOPE_CPU, COUNTER_ITEMS,
FORMAT_DELTA, SYSFS_PERCPU);
}
@ -4834,12 +4869,6 @@ error:
exit(-1);
}
/*
* HIDE_LIST - hide this list of counters, show the rest [default]
* SHOW_LIST - show this list of counters, hide the rest
*/
enum show_hide_mode { SHOW_LIST, HIDE_LIST } global_show_hide_mode = HIDE_LIST;
int shown;
/*
* parse_show_hide() - process cmdline to set default counter action
@ -4853,9 +4882,9 @@ void parse_show_hide(char *optarg, enum show_hide_mode new_mode)
*/
if (new_mode == SHOW_LIST) {
if (shown == 0)
bic_enabled = bic_lookup(optarg);
bic_enabled = bic_lookup(optarg, new_mode);
else
bic_enabled |= bic_lookup(optarg);
bic_enabled |= bic_lookup(optarg, new_mode);
shown = 1;
return;
@ -4865,7 +4894,7 @@ void parse_show_hide(char *optarg, enum show_hide_mode new_mode)
* --hide: do not show those specified
* multiple invocations simply clear more bits in enabled mask
*/
bic_enabled &= ~bic_lookup(optarg);
bic_enabled &= ~bic_lookup(optarg, new_mode);
}