From 495c7654ccfb771d19ce1b9fbc7be21e45b14636 Mon Sep 17 00:00:00 2001 From: Len Brown Date: Wed, 8 Feb 2017 02:41:51 -0500 Subject: tools/power turbostat: extend --add option to accept /sys path 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 --- tools/power/x86/turbostat/turbostat.c | 92 ++++++++++++++++++++++++++--------- 1 file changed, 69 insertions(+), 23 deletions(-) (limited to 'tools/power/x86') diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c index 334c4c29d4b5..841f837e317f 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -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 \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) { -- cgit v1.2.3-55-g7522