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tools/power turbostat: extend --add option to accept /sys path

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Previously, the --add option could specify only an MSR.

Here is is extended so an arbitrary /sys attribute,
as specified by an absolute file path name.

sudo ./turbostat --add /sys/devices/system/cpu/cpu0/cpuidle/state5/usage

Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Len Brown 2017-02-08 02:41:51 -05:00
parent ade0ebacdf
commit 495c7654cc
1 changed files with 69 additions and 23 deletions
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92
tools/power/x86/turbostat/turbostat.c
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@ -138,6 +138,7 @@ unsigned int has_misc_feature_control;
* Usually truncated to 7 characters, but also handles 18 columns for raw 64-bit counters
*/
#define NAME_BYTES 20
#define PATH_BYTES 128
int backwards_count;
char *progname;
@ -213,6 +214,7 @@ enum counter_format {FORMAT_RAW, FORMAT_DELTA, FORMAT_PERCENT};
struct msr_counter {
unsigned int msr_num;
char name[NAME_BYTES];
char path[PATH_BYTES];
unsigned int width;
enum counter_type type;
enum counter_format format;
@ -344,7 +346,7 @@ struct msr_counter bic[] = {
{ 0x0, "Bzy_MHz" },
{ 0x0, "TSC_MHz" },
{ 0x0, "IRQ" },
{ 0x0, "SMI", 32, 0, FORMAT_DELTA, NULL},
{ 0x0, "SMI", "", 32, 0, FORMAT_DELTA, NULL},
{ 0x0, "Busy%" },
{ 0x0, "CPU%c1" },
{ 0x0, "CPU%c3" },
@ -1307,6 +1309,51 @@ static unsigned long long rdtsc(void)
return low | ((unsigned long long)high) << 32;
}
/*
* Open a file, and exit on failure
*/
FILE *fopen_or_die(const char *path, const char *mode)
{
FILE *filep = fopen(path, mode);
if (!filep)
err(1, "%s: open failed", path);
return filep;
}
/*
* snapshot_sysfs_counter()
*
* return snapshot of given counter
*/
unsigned long long snapshot_sysfs_counter(char *path)
{
FILE *fp;
int retval;
unsigned long long counter;
fp = fopen_or_die(path, "r");
retval = fscanf(fp, "%lld", &counter);
if (retval != 1)
err(1, "snapshot_sysfs_counter(%s)", path);
fclose(fp);
return counter;
}
int get_mp(int cpu, struct msr_counter *mp, unsigned long long *counterp)
{
if (mp->msr_num != 0) {
if (get_msr(cpu, mp->msr_num, counterp))
return -1;
} else {
*counterp = snapshot_sysfs_counter(mp->path);
}
return 0;
}
/*
* get_counters(...)
* migrate to cpu
@ -1397,11 +1444,10 @@ retry:
}
for (i = 0, mp = sys.tp; mp; i++, mp = mp->next) {
if (get_msr(cpu, mp->msr_num, &t->counter[i]))
if (get_mp(cpu, mp, &t->counter[i]))
return -10;
}
/* collect core counters only for 1st thread in core */
if (!(t->flags & CPU_IS_FIRST_THREAD_IN_CORE))
return 0;
@ -1434,7 +1480,7 @@ retry:
}
for (i = 0, mp = sys.cp; mp; i++, mp = mp->next) {
if (get_msr(cpu, mp->msr_num, &c->counter[i]))
if (get_mp(cpu, mp, &c->counter[i]))
return -10;
}
@ -1524,7 +1570,7 @@ retry:
p->gfx_mhz = gfx_cur_mhz;
for (i = 0, mp = sys.pp; mp; i++, mp = mp->next) {
if (get_msr(cpu, mp->msr_num, &p->counter[i]))
if (get_mp(cpu, mp, &p->counter[i]))
return -10;
}
@ -2013,16 +2059,6 @@ void free_all_buffers(void)
free(irqs_per_cpu);
}
/*
* Open a file, and exit on failure
*/
FILE *fopen_or_die(const char *path, const char *mode)
{
FILE *filep = fopen(path, mode);
if (!filep)
err(1, "%s: open failed", path);
return filep;
}
/*
* Parse a file containing a single int.
@ -2581,7 +2617,7 @@ int probe_nhm_msrs(unsigned int family, unsigned int model)
return 1;
}
/*
* SLV client has supporet for unique MSRs:
* SLV client has support for unique MSRs:
*
* MSR_CC6_DEMOTION_POLICY_CONFIG
* MSR_MC6_DEMOTION_POLICY_CONFIG
@ -4342,9 +4378,9 @@ void print_version() {
" - Len Brown <lenb@kernel.org>\n");
}
int add_counter(unsigned int msr_num, char *name, unsigned int width,
enum counter_scope scope, enum counter_type type,
enum counter_format format)
int add_counter(unsigned int msr_num, char *path, char *name,
unsigned int width, enum counter_scope scope,
enum counter_type type, enum counter_format format)
{
struct msr_counter *msrp;
@ -4356,6 +4392,8 @@ int add_counter(unsigned int msr_num, char *name, unsigned int width,
msrp->msr_num = msr_num;
strncpy(msrp->name, name, NAME_BYTES);
if (path)
strncpy(msrp->path, path, PATH_BYTES);
msrp->width = width;
msrp->type = type;
msrp->format = format;
@ -4402,6 +4440,7 @@ int add_counter(unsigned int msr_num, char *name, unsigned int width,
void parse_add_command(char *add_command)
{
int msr_num = 0;
char *path = NULL;
char name_buffer[NAME_BYTES] = "";
int width = 64;
int fail = 0;
@ -4417,6 +4456,11 @@ void parse_add_command(char *add_command)
if (sscanf(add_command, "msr%d", &msr_num) == 1)
goto next;
if (*add_command == '/') {
path = add_command;
goto next;
}
if (sscanf(add_command, "u%d", &width) == 1) {
if ((width == 32) || (width == 64))
goto next;
@ -4466,12 +4510,14 @@ void parse_add_command(char *add_command)
next:
add_command = strchr(add_command, ',');
if (add_command)
if (add_command) {
*add_command = '\0';
add_command++;
}
}
if (msr_num == 0) {
fprintf(stderr, "--add: (msrDDD | msr0xXXX) required\n");
if ((msr_num == 0) && (path == NULL)) {
fprintf(stderr, "--add: (msrDDD | msr0xXXX | /path_to_counter ) required\n");
fail++;
}
@ -4495,7 +4541,7 @@ next:
}
}
if (add_counter(msr_num, name_buffer, width, scope, type, format))
if (add_counter(msr_num, path, name_buffer, width, scope, type, format))
fail++;
if (fail) {