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authorLinus Torvalds <torvalds@linux-foundation.org>2020-03-21 11:50:36 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2020-03-21 11:50:36 -0700
commit6c1bae744d5a15108c412336d95f3c4e5db6aff4 (patch)
tree6a4d39bd161c89b8f7f1036a55a5d01de4158228
parentc63c50fc2ec9afc4de21ef9ead2eac64b178cce1 (diff)
parentb95fffb9b4afa8b9aa4a389ec7a0c578811eaf42 (diff)
Merge branch 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux
Pull turbostat updates from Len Brown: "Update to turbostat v20.03.20. These patches unlock the full turbostat features for some new machines, plus a couple other minor tweaks" * 'turbostat' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux: tools/power turbostat: update version tools/power turbostat: Print cpuidle information tools/power turbostat: Fix 32-bit capabilities warning tools/power turbostat: Fix missing SYS_LPI counter on some Chromebooks tools/power turbostat: Support Elkhart Lake tools/power turbostat: Support Jasper Lake tools/power turbostat: Support Ice Lake server tools/power turbostat: Support Tiger Lake tools/power turbostat: Fix gcc build warnings tools/power turbostat: Support Cometlake
-rw-r--r--tools/power/x86/turbostat/Makefile2
-rw-r--r--tools/power/x86/turbostat/turbostat.c142
2 files changed, 114 insertions, 30 deletions
diff --git a/tools/power/x86/turbostat/Makefile b/tools/power/x86/turbostat/Makefile
index 13f1e8b9ac52..2b6551269e43 100644
--- a/tools/power/x86/turbostat/Makefile
+++ b/tools/power/x86/turbostat/Makefile
@@ -16,7 +16,7 @@ override CFLAGS += -D_FORTIFY_SOURCE=2
%: %.c
@mkdir -p $(BUILD_OUTPUT)
- $(CC) $(CFLAGS) $< -o $(BUILD_OUTPUT)/$@ $(LDFLAGS)
+ $(CC) $(CFLAGS) $< -o $(BUILD_OUTPUT)/$@ $(LDFLAGS) -lcap
.PHONY : clean
clean :
diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index 31c1ca0bb3ee..33b370865d16 100644
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -30,7 +30,7 @@
#include <sched.h>
#include <time.h>
#include <cpuid.h>
-#include <linux/capability.h>
+#include <sys/capability.h>
#include <errno.h>
#include <math.h>
@@ -304,6 +304,10 @@ int *irqs_per_cpu; /* indexed by cpu_num */
void setup_all_buffers(void);
+char *sys_lpi_file;
+char *sys_lpi_file_sysfs = "/sys/devices/system/cpu/cpuidle/low_power_idle_system_residency_us";
+char *sys_lpi_file_debugfs = "/sys/kernel/debug/pmc_core/slp_s0_residency_usec";
+
int cpu_is_not_present(int cpu)
{
return !CPU_ISSET_S(cpu, cpu_present_setsize, cpu_present_set);
@@ -2916,8 +2920,6 @@ int snapshot_gfx_mhz(void)
*
* record snapshot of
* /sys/devices/system/cpu/cpuidle/low_power_idle_cpu_residency_us
- *
- * return 1 if config change requires a restart, else return 0
*/
int snapshot_cpu_lpi_us(void)
{
@@ -2941,17 +2943,14 @@ int snapshot_cpu_lpi_us(void)
/*
* snapshot_sys_lpi()
*
- * record snapshot of
- * /sys/devices/system/cpu/cpuidle/low_power_idle_system_residency_us
- *
- * return 1 if config change requires a restart, else return 0
+ * record snapshot of sys_lpi_file
*/
int snapshot_sys_lpi_us(void)
{
FILE *fp;
int retval;
- fp = fopen_or_die("/sys/devices/system/cpu/cpuidle/low_power_idle_system_residency_us", "r");
+ fp = fopen_or_die(sys_lpi_file, "r");
retval = fscanf(fp, "%lld", &cpuidle_cur_sys_lpi_us);
if (retval != 1) {
@@ -3151,28 +3150,42 @@ void check_dev_msr()
err(-5, "no /dev/cpu/0/msr, Try \"# modprobe msr\" ");
}
-void check_permissions()
+/*
+ * check for CAP_SYS_RAWIO
+ * return 0 on success
+ * return 1 on fail
+ */
+int check_for_cap_sys_rawio(void)
{
- struct __user_cap_header_struct cap_header_data;
- cap_user_header_t cap_header = &cap_header_data;
- struct __user_cap_data_struct cap_data_data;
- cap_user_data_t cap_data = &cap_data_data;
- extern int capget(cap_user_header_t hdrp, cap_user_data_t datap);
- int do_exit = 0;
- char pathname[32];
+ cap_t caps;
+ cap_flag_value_t cap_flag_value;
- /* check for CAP_SYS_RAWIO */
- cap_header->pid = getpid();
- cap_header->version = _LINUX_CAPABILITY_VERSION;
- if (capget(cap_header, cap_data) < 0)
- err(-6, "capget(2) failed");
+ caps = cap_get_proc();
+ if (caps == NULL)
+ err(-6, "cap_get_proc\n");
- if ((cap_data->effective & (1 << CAP_SYS_RAWIO)) == 0) {
- do_exit++;
+ if (cap_get_flag(caps, CAP_SYS_RAWIO, CAP_EFFECTIVE, &cap_flag_value))
+ err(-6, "cap_get\n");
+
+ if (cap_flag_value != CAP_SET) {
warnx("capget(CAP_SYS_RAWIO) failed,"
" try \"# setcap cap_sys_rawio=ep %s\"", progname);
+ return 1;
}
+ if (cap_free(caps) == -1)
+ err(-6, "cap_free\n");
+
+ return 0;
+}
+void check_permissions(void)
+{
+ int do_exit = 0;
+ char pathname[32];
+
+ /* check for CAP_SYS_RAWIO */
+ do_exit += check_for_cap_sys_rawio();
+
/* test file permissions */
sprintf(pathname, "/dev/cpu/%d/msr", base_cpu);
if (euidaccess(pathname, R_OK)) {
@@ -3265,6 +3278,7 @@ int probe_nhm_msrs(unsigned int family, unsigned int model)
case INTEL_FAM6_ATOM_GOLDMONT: /* BXT */
case INTEL_FAM6_ATOM_GOLDMONT_PLUS:
case INTEL_FAM6_ATOM_GOLDMONT_D: /* DNV */
+ case INTEL_FAM6_ATOM_TREMONT: /* EHL */
pkg_cstate_limits = glm_pkg_cstate_limits;
break;
default:
@@ -3336,6 +3350,17 @@ int is_skx(unsigned int family, unsigned int model)
}
return 0;
}
+int is_ehl(unsigned int family, unsigned int model)
+{
+ if (!genuine_intel)
+ return 0;
+
+ switch (model) {
+ case INTEL_FAM6_ATOM_TREMONT:
+ return 1;
+ }
+ return 0;
+}
int has_turbo_ratio_limit(unsigned int family, unsigned int model)
{
@@ -3478,6 +3503,23 @@ dump_cstate_pstate_config_info(unsigned int family, unsigned int model)
dump_nhm_cst_cfg();
}
+static void dump_sysfs_file(char *path)
+{
+ FILE *input;
+ char cpuidle_buf[64];
+
+ input = fopen(path, "r");
+ if (input == NULL) {
+ if (debug)
+ fprintf(outf, "NSFOD %s\n", path);
+ return;
+ }
+ if (!fgets(cpuidle_buf, sizeof(cpuidle_buf), input))
+ err(1, "%s: failed to read file", path);
+ fclose(input);
+
+ fprintf(outf, "%s: %s", strrchr(path, '/') + 1, cpuidle_buf);
+}
static void
dump_sysfs_cstate_config(void)
{
@@ -3491,6 +3533,15 @@ dump_sysfs_cstate_config(void)
if (!DO_BIC(BIC_sysfs))
return;
+ if (access("/sys/devices/system/cpu/cpuidle", R_OK)) {
+ fprintf(outf, "cpuidle not loaded\n");
+ return;
+ }
+
+ dump_sysfs_file("/sys/devices/system/cpu/cpuidle/current_driver");
+ dump_sysfs_file("/sys/devices/system/cpu/cpuidle/current_governor");
+ dump_sysfs_file("/sys/devices/system/cpu/cpuidle/current_governor_ro");
+
for (state = 0; state < 10; ++state) {
sprintf(path, "/sys/devices/system/cpu/cpu%d/cpuidle/state%d/name",
@@ -3894,6 +3945,20 @@ void rapl_probe_intel(unsigned int family, unsigned int model)
else
BIC_PRESENT(BIC_PkgWatt);
break;
+ case INTEL_FAM6_ATOM_TREMONT: /* EHL */
+ do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_DRAM | RAPL_DRAM_PERF_STATUS | RAPL_PKG_PERF_STATUS | RAPL_GFX | RAPL_PKG_POWER_INFO;
+ if (rapl_joules) {
+ BIC_PRESENT(BIC_Pkg_J);
+ BIC_PRESENT(BIC_Cor_J);
+ BIC_PRESENT(BIC_RAM_J);
+ BIC_PRESENT(BIC_GFX_J);
+ } else {
+ BIC_PRESENT(BIC_PkgWatt);
+ BIC_PRESENT(BIC_CorWatt);
+ BIC_PRESENT(BIC_RAMWatt);
+ BIC_PRESENT(BIC_GFXWatt);
+ }
+ break;
case INTEL_FAM6_SKYLAKE_L: /* SKL */
case INTEL_FAM6_CANNONLAKE_L: /* CNL */
do_rapl = RAPL_PKG | RAPL_CORES | RAPL_CORE_POLICY | RAPL_DRAM | RAPL_DRAM_PERF_STATUS | RAPL_PKG_PERF_STATUS | RAPL_GFX | RAPL_PKG_POWER_INFO;
@@ -4295,6 +4360,7 @@ int has_snb_msrs(unsigned int family, unsigned int model)
case INTEL_FAM6_ATOM_GOLDMONT: /* BXT */
case INTEL_FAM6_ATOM_GOLDMONT_PLUS:
case INTEL_FAM6_ATOM_GOLDMONT_D: /* DNV */
+ case INTEL_FAM6_ATOM_TREMONT: /* EHL */
return 1;
}
return 0;
@@ -4324,6 +4390,7 @@ int has_c8910_msrs(unsigned int family, unsigned int model)
case INTEL_FAM6_CANNONLAKE_L: /* CNL */
case INTEL_FAM6_ATOM_GOLDMONT: /* BXT */
case INTEL_FAM6_ATOM_GOLDMONT_PLUS:
+ case INTEL_FAM6_ATOM_TREMONT: /* EHL */
return 1;
}
return 0;
@@ -4610,14 +4677,24 @@ unsigned int intel_model_duplicates(unsigned int model)
case INTEL_FAM6_SKYLAKE:
case INTEL_FAM6_KABYLAKE_L:
case INTEL_FAM6_KABYLAKE:
+ case INTEL_FAM6_COMETLAKE_L:
+ case INTEL_FAM6_COMETLAKE:
return INTEL_FAM6_SKYLAKE_L;
case INTEL_FAM6_ICELAKE_L:
case INTEL_FAM6_ICELAKE_NNPI:
+ case INTEL_FAM6_TIGERLAKE_L:
+ case INTEL_FAM6_TIGERLAKE:
return INTEL_FAM6_CANNONLAKE_L;
case INTEL_FAM6_ATOM_TREMONT_D:
return INTEL_FAM6_ATOM_GOLDMONT_D;
+
+ case INTEL_FAM6_ATOM_TREMONT_L:
+ return INTEL_FAM6_ATOM_TREMONT;
+
+ case INTEL_FAM6_ICELAKE_X:
+ return INTEL_FAM6_SKYLAKE_X;
}
return model;
}
@@ -4872,7 +4949,8 @@ void process_cpuid()
do_slm_cstates = is_slm(family, model);
do_knl_cstates = is_knl(family, model);
- if (do_slm_cstates || do_knl_cstates || is_cnl(family, model))
+ if (do_slm_cstates || do_knl_cstates || is_cnl(family, model) ||
+ is_ehl(family, model))
BIC_NOT_PRESENT(BIC_CPU_c3);
if (!quiet)
@@ -4907,10 +4985,16 @@ void process_cpuid()
else
BIC_NOT_PRESENT(BIC_CPU_LPI);
- if (!access("/sys/devices/system/cpu/cpuidle/low_power_idle_system_residency_us", R_OK))
+ if (!access(sys_lpi_file_sysfs, R_OK)) {
+ sys_lpi_file = sys_lpi_file_sysfs;
BIC_PRESENT(BIC_SYS_LPI);
- else
+ } else if (!access(sys_lpi_file_debugfs, R_OK)) {
+ sys_lpi_file = sys_lpi_file_debugfs;
+ BIC_PRESENT(BIC_SYS_LPI);
+ } else {
+ sys_lpi_file_sysfs = NULL;
BIC_NOT_PRESENT(BIC_SYS_LPI);
+ }
if (!quiet)
decode_misc_feature_control();
@@ -5306,7 +5390,7 @@ int get_and_dump_counters(void)
}
void print_version() {
- fprintf(outf, "turbostat version 19.08.31"
+ fprintf(outf, "turbostat version 20.03.20"
" - Len Brown <lenb@kernel.org>\n");
}
@@ -5323,9 +5407,9 @@ int add_counter(unsigned int msr_num, char *path, char *name,
}
msrp->msr_num = msr_num;
- strncpy(msrp->name, name, NAME_BYTES);
+ strncpy(msrp->name, name, NAME_BYTES - 1);
if (path)
- strncpy(msrp->path, path, PATH_BYTES);
+ strncpy(msrp->path, path, PATH_BYTES - 1);
msrp->width = width;
msrp->type = type;
msrp->format = format;