diff options
Diffstat (limited to 'tools/power/cpupower/lib/cpuidle.c')
| -rw-r--r-- | tools/power/cpupower/lib/cpuidle.c | 18 |
1 files changed, 13 insertions, 5 deletions
diff --git a/tools/power/cpupower/lib/cpuidle.c b/tools/power/cpupower/lib/cpuidle.c index 9bd4c7655fdb..f2c1139adf71 100644 --- a/tools/power/cpupower/lib/cpuidle.c +++ b/tools/power/cpupower/lib/cpuidle.c @@ -1,8 +1,7 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * (C) 2004-2009 Dominik Brodowski <linux@dominikbrodowski.de> * (C) 2011 Thomas Renninger <trenn@novell.com> Novell Inc. - * - * Licensed under the terms of the GNU GPL License version 2. */ #include <stdio.h> @@ -117,6 +116,7 @@ enum idlestate_value { IDLESTATE_USAGE, IDLESTATE_POWER, IDLESTATE_LATENCY, + IDLESTATE_RESIDENCY, IDLESTATE_TIME, IDLESTATE_DISABLE, MAX_IDLESTATE_VALUE_FILES @@ -126,6 +126,7 @@ static const char *idlestate_value_files[MAX_IDLESTATE_VALUE_FILES] = { [IDLESTATE_USAGE] = "usage", [IDLESTATE_POWER] = "power", [IDLESTATE_LATENCY] = "latency", + [IDLESTATE_RESIDENCY] = "residency", [IDLESTATE_TIME] = "time", [IDLESTATE_DISABLE] = "disable", }; @@ -232,6 +233,7 @@ int cpuidle_state_disable(unsigned int cpu, { char value[SYSFS_PATH_MAX]; int bytes_written; + int len; if (cpuidle_state_count(cpu) <= idlestate) return -1; @@ -240,10 +242,10 @@ int cpuidle_state_disable(unsigned int cpu, idlestate_value_files[IDLESTATE_DISABLE])) return -2; - snprintf(value, SYSFS_PATH_MAX, "%u", disable); + len = snprintf(value, SYSFS_PATH_MAX, "%u", disable); bytes_written = cpuidle_state_write_file(cpu, idlestate, "disable", - value, sizeof(disable)); + value, len); if (bytes_written) return 0; return -3; @@ -255,6 +257,12 @@ unsigned long cpuidle_state_latency(unsigned int cpu, return cpuidle_state_get_one_value(cpu, idlestate, IDLESTATE_LATENCY); } +unsigned long cpuidle_state_residency(unsigned int cpu, + unsigned int idlestate) +{ + return cpuidle_state_get_one_value(cpu, idlestate, IDLESTATE_RESIDENCY); +} + unsigned long cpuidle_state_usage(unsigned int cpu, unsigned int idlestate) { @@ -319,7 +327,7 @@ static unsigned int sysfs_cpuidle_read_file(const char *fname, char *buf, snprintf(path, sizeof(path), PATH_TO_CPU "cpuidle/%s", fname); - return sysfs_read_file(path, buf, buflen); + return cpupower_read_sysfs(path, buf, buflen); } |