diff options
| -rw-r--r-- | tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.c | 132 |
1 files changed, 130 insertions, 2 deletions
diff --git a/tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.c b/tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.c index ac37132207a4..1f330c82d7c1 100644 --- a/tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.c +++ b/tools/power/x86/x86_energy_perf_policy/x86_energy_perf_policy.c @@ -92,8 +92,18 @@ unsigned int has_hwp_request_pkg; /* IA32_HWP_REQUEST_PKG */ unsigned int bdx_highest_ratio; +unsigned char update_soc_slider_balance; +unsigned char update_soc_slider_offset; +unsigned char update_platform_profile; +int soc_slider_balance; +int soc_slider_offset; +char platform_profile[64]; + #define PATH_TO_CPU "/sys/devices/system/cpu/" #define SYSFS_PATH_MAX 255 +#define PATH_SOC_SLIDER_BALANCE "/sys/module/processor_thermal_soc_slider/parameters/slider_balance" +#define PATH_SOC_SLIDER_OFFSET "/sys/module/processor_thermal_soc_slider/parameters/slider_offset" +#define PATH_PLATFORM_PROFILE "/sys/class/platform-profile/platform-profile-0/profile" static int use_android_msr_path; @@ -106,6 +116,7 @@ void usage(void) fprintf(stderr, "scope: --cpu cpu-list [--hwp-use-pkg #] | --pkg pkg-list\n"); fprintf(stderr, "field: --all | --epb | --hwp-epp | --hwp-min | --hwp-max | --hwp-desired\n"); fprintf(stderr, "other: --hwp-enable | --turbo-enable (0 | 1) | --help | --force\n"); + fprintf(stderr, "soc-slider: --soc-slider-balance # | --soc-slider-offset # | --platform-profile <name>\n"); fprintf(stderr, "value: ( # | \"normal\" | \"performance\" | \"balance-performance\" | \"balance-power\"| \"power\")\n"); fprintf(stderr, "--hwp-window usec\n"); @@ -518,6 +529,23 @@ void for_packages(unsigned long long pkg_set, int (func)(int)) } } +static int parse_cmdline_int(const char *s, int *out) +{ + char *endp; + long val; + + val = strtol(s, &endp, 0); + if (endp == s || errno == ERANGE) + return -1; + if (*endp != '\0') + return -1; + if (val < INT_MIN || val > INT_MAX) + return -1; + + *out = (int)val; + return 0; +} + void print_version(void) { printf("x86_energy_perf_policy 2025.11.22 Len Brown <lenb@kernel.org>\n"); @@ -546,12 +574,15 @@ void cmdline(int argc, char **argv) {"hwp-use-pkg", required_argument, 0, 'u'}, {"version", no_argument, 0, 'v'}, {"hwp-window", required_argument, 0, 'w'}, + {"soc-slider-balance", required_argument, 0, 'S'}, + {"soc-slider-offset", required_argument, 0, 'O'}, + {"platform-profile", required_argument, 0, 'F'}, {0, 0, 0, 0 } }; progname = argv[0]; - while ((opt = getopt_long_only(argc, argv, "+a:c:dD:E:e:f:m:M:rt:u:vw:", + while ((opt = getopt_long_only(argc, argv, "+a:c:dD:E:e:f:m:M:rt:u:vw::S:O:F:", long_options, &option_index)) != -1) { switch (opt) { case 'a': @@ -579,12 +610,23 @@ void cmdline(int argc, char **argv) case 'D': req_update.hwp_desired = parse_cmdline_hwp_desired(parse_optarg_string(optarg)); break; + case 'F': + if (strlen(optarg) >= sizeof(platform_profile)) + errx(1, "--platform-profile: value too long"); + strcpy(platform_profile, optarg); + update_platform_profile = 1; + break; case 'm': req_update.hwp_min = parse_cmdline_hwp_min(parse_optarg_string(optarg)); break; case 'M': req_update.hwp_max = parse_cmdline_hwp_max(parse_optarg_string(optarg)); break; + case 'O': + if (parse_cmdline_int(optarg, &soc_slider_offset)) + errx(1, "--soc-slider-offset: invalid value"); + update_soc_slider_offset = 1; + break; case 'p': parse_cmdline_pkg(optarg); break; @@ -594,6 +636,11 @@ void cmdline(int argc, char **argv) case 'r': /* v1 used -r to specify read-only mode, now the default */ break; + case 'S': + if (parse_cmdline_int(optarg, &soc_slider_balance)) + errx(1, "--soc-slider-balance: invalid value"); + update_soc_slider_balance = 1; + break; case 't': turbo_update_value = parse_cmdline_turbo(parse_optarg_string(optarg)); break; @@ -777,6 +824,31 @@ static unsigned int write_sysfs(const char *path, char *buf, size_t buflen) return (unsigned int) numwritten; } +static int sysfs_read_string(const char *path, char *buf, size_t buflen) +{ + unsigned int len; + size_t n; + + len = read_sysfs(path, buf, buflen); + if (!len) + return -1; + + n = strcspn(buf, "\n"); + buf[n] = '\0'; + return 0; +} + +static int sysfs_write_string(const char *path, const char *buf) +{ + char tmp[128]; + int len; + + len = snprintf(tmp, sizeof(tmp), "%s\n", buf); + if (len < 0 || len >= (int)sizeof(tmp)) + return -1; + return write_sysfs(path, tmp, (size_t)len + 1) ? 0 : -1; +} + void print_hwp_cap(int cpu, struct msr_hwp_cap *cap, char *str) { if (cpu != -1) @@ -900,6 +972,55 @@ static int set_epb_sysfs(int cpu, int val) return (int)val; } +static int soc_slider_available(void) +{ + if (access(PATH_SOC_SLIDER_BALANCE, R_OK) && + access(PATH_SOC_SLIDER_OFFSET, R_OK) && + access(PATH_PLATFORM_PROFILE, R_OK)) + return 0; + + return 1; +} + +static void print_soc_slider(void) +{ + char buf[64]; + + if (!soc_slider_available()) + return; + + if (sysfs_read_string(PATH_SOC_SLIDER_BALANCE, buf, sizeof(buf)) == 0) + printf("soc-slider-balance: %s\n", buf); + if (sysfs_read_string(PATH_SOC_SLIDER_OFFSET, buf, sizeof(buf)) == 0) + printf("soc-slider-offset: %s\n", buf); + if (sysfs_read_string(PATH_PLATFORM_PROFILE, buf, sizeof(buf)) == 0) + printf("platform-profile: %s\n", buf); +} + +static int update_soc_slider(void) +{ + char tmp[32]; + + if (update_soc_slider_balance) { + snprintf(tmp, sizeof(tmp), "%d", soc_slider_balance); + if (sysfs_write_string(PATH_SOC_SLIDER_BALANCE, tmp)) + err(1, "soc-slider-balance write failed"); + } + + if (update_soc_slider_offset) { + snprintf(tmp, sizeof(tmp), "%d", soc_slider_offset); + if (sysfs_write_string(PATH_SOC_SLIDER_OFFSET, tmp)) + err(1, "soc-slider-offset write failed"); + } + + if (update_platform_profile) { + if (sysfs_write_string(PATH_PLATFORM_PROFILE, platform_profile)) + err(1, "platform-profile write failed"); + } + + return 0; +} + int print_cpu_msrs(int cpu) { struct msr_hwp_request req; @@ -1604,10 +1725,14 @@ int main(int argc, char **argv) return -EINVAL; /* display information only, no updates to settings */ - if (!update_epb && !update_turbo && !hwp_update_enabled()) { + if (!update_epb && !update_turbo && !hwp_update_enabled() && + !update_soc_slider_balance && !update_soc_slider_offset && + !update_platform_profile) { if (cpu_selected_set) for_all_cpus_in_set(cpu_setsize, cpu_selected_set, print_cpu_msrs); + print_soc_slider(); + if (has_hwp_request_pkg) { if (pkg_selected_set == 0) pkg_selected_set = pkg_present_set; @@ -1628,5 +1753,8 @@ int main(int argc, char **argv) } else if (pkg_selected_set) for_packages(pkg_selected_set, update_hwp_request_pkg_msr); + if (update_soc_slider_balance || update_soc_slider_offset || update_platform_profile) + update_soc_slider(); + return 0; } |