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-rw-r--r--include/cutils/sched_policy.h3
-rw-r--r--libcutils/sched_policy.c94
-rw-r--r--rootdir/init.rc36
3 files changed, 112 insertions, 21 deletions
diff --git a/include/cutils/sched_policy.h b/include/cutils/sched_policy.h
index c6e4fc4..ba84ce3 100644
--- a/include/cutils/sched_policy.h
+++ b/include/cutils/sched_policy.h
@@ -26,6 +26,9 @@ typedef enum {
SP_DEFAULT = -1,
SP_BACKGROUND = 0,
SP_FOREGROUND = 1,
+ SP_SYSTEM = 2, // can't be used with set_sched_policy()
+ SP_AUDIO_APP = 3,
+ SP_AUDIO_SYS = 4,
SP_CNT,
SP_MAX = SP_CNT - 1,
SP_SYSTEM_DEFAULT = SP_FOREGROUND,
diff --git a/libcutils/sched_policy.c b/libcutils/sched_policy.c
index 345532b..20771c0 100644
--- a/libcutils/sched_policy.c
+++ b/libcutils/sched_policy.c
@@ -44,28 +44,51 @@
#define POLICY_DEBUG 0
+#define CAN_SET_SP_SYSTEM 0 // non-zero means to implement set_sched_policy(tid, SP_SYSTEM)
+
static pthread_once_t the_once = PTHREAD_ONCE_INIT;
static int __sys_supports_schedgroups = -1;
// File descriptors open to /dev/cpuctl/../tasks, setup by initialize, or -1 on error.
-static int normal_cgroup_fd = -1;
static int bg_cgroup_fd = -1;
+static int fg_cgroup_fd = -1;
+#if CAN_SET_SP_SYSTEM
+static int system_cgroup_fd = -1;
+#endif
+static int audio_app_cgroup_fd = -1;
+static int audio_sys_cgroup_fd = -1;
/* Add tid to the scheduling group defined by the policy */
static int add_tid_to_cgroup(int tid, SchedPolicy policy)
{
int fd;
- if (policy == SP_BACKGROUND) {
+ switch (policy) {
+ case SP_BACKGROUND:
fd = bg_cgroup_fd;
- } else {
- fd = normal_cgroup_fd;
+ break;
+ case SP_FOREGROUND:
+ fd = fg_cgroup_fd;
+ break;
+#if CAN_SET_SP_SYSTEM
+ case SP_SYSTEM:
+ fd = system_cgroup_fd;
+ break;
+#endif
+ case SP_AUDIO_APP:
+ fd = audio_app_cgroup_fd;
+ break;
+ case SP_AUDIO_SYS:
+ fd = audio_sys_cgroup_fd;
+ break;
+ default:
+ fd = -1;
+ break;
}
if (fd < 0) {
- SLOGE("add_tid_to_cgroup failed; background=%d\n",
- policy == SP_BACKGROUND ? 1 : 0);
+ SLOGE("add_tid_to_cgroup failed; policy=%d\n", policy);
return -1;
}
@@ -86,8 +109,8 @@ static int add_tid_to_cgroup(int tid, SchedPolicy policy)
*/
if (errno == ESRCH)
return 0;
- SLOGW("add_tid_to_cgroup failed to write '%s' (%s); background=%d\n",
- ptr, strerror(errno), policy == SP_BACKGROUND ? 1 : 0);
+ SLOGW("add_tid_to_cgroup failed to write '%s' (%s); policy=%d\n",
+ ptr, strerror(errno), policy);
return -1;
}
@@ -99,9 +122,17 @@ static void __initialize(void) {
if (!access("/dev/cpuctl/tasks", F_OK)) {
__sys_supports_schedgroups = 1;
+#if CAN_SET_SP_SYSTEM
filename = "/dev/cpuctl/tasks";
- normal_cgroup_fd = open(filename, O_WRONLY);
- if (normal_cgroup_fd < 0) {
+ system_cgroup_fd = open(filename, O_WRONLY);
+ if (system_cgroup_fd < 0) {
+ SLOGV("open of %s failed: %s\n", filename, strerror(errno));
+ }
+#endif
+
+ filename = "/dev/cpuctl/foreground/tasks";
+ fg_cgroup_fd = open(filename, O_WRONLY);
+ if (fg_cgroup_fd < 0) {
SLOGE("open of %s failed: %s\n", filename, strerror(errno));
}
@@ -110,6 +141,19 @@ static void __initialize(void) {
if (bg_cgroup_fd < 0) {
SLOGE("open of %s failed: %s\n", filename, strerror(errno));
}
+
+ filename = "/dev/cpuctl/audio_app/tasks";
+ audio_app_cgroup_fd = open(filename, O_WRONLY);
+ if (audio_app_cgroup_fd < 0) {
+ SLOGV("open of %s failed: %s\n", filename, strerror(errno));
+ }
+
+ filename = "/dev/cpuctl/audio_sys/tasks";
+ audio_sys_cgroup_fd = open(filename, O_WRONLY);
+ if (audio_sys_cgroup_fd < 0) {
+ SLOGV("open of %s failed: %s\n", filename, strerror(errno));
+ }
+
} else {
__sys_supports_schedgroups = 0;
}
@@ -201,9 +245,15 @@ int get_sched_policy(int tid, SchedPolicy *policy)
if (getSchedulerGroup(tid, grpBuf, sizeof(grpBuf)) < 0)
return -1;
if (grpBuf[0] == '\0') {
- *policy = SP_FOREGROUND;
+ *policy = SP_SYSTEM;
} else if (!strcmp(grpBuf, "bg_non_interactive")) {
*policy = SP_BACKGROUND;
+ } else if (!strcmp(grpBuf, "foreground")) {
+ *policy = SP_FOREGROUND;
+ } else if (!strcmp(grpBuf, "audio_app")) {
+ *policy = SP_AUDIO_APP;
+ } else if (!strcmp(grpBuf, "audio_sys")) {
+ *policy = SP_AUDIO_SYS;
} else {
errno = ERANGE;
return -1;
@@ -266,12 +316,25 @@ int set_sched_policy(int tid, SchedPolicy policy)
strncpy(thread_name, p, (q-p));
}
- if (policy == SP_BACKGROUND) {
+ switch (policy) {
+ case SP_BACKGROUND:
SLOGD("vvv tid %d (%s)", tid, thread_name);
- } else if (policy == SP_FOREGROUND) {
+ break;
+ case SP_FOREGROUND:
SLOGD("^^^ tid %d (%s)", tid, thread_name);
- } else {
+ break;
+ case SP_SYSTEM:
+ SLOGD("/// tid %d (%s)", tid, thread_name);
+ break;
+ case SP_AUDIO_APP:
+ SLOGD("aaa tid %d (%s)", tid, thread_name);
+ break;
+ case SP_AUDIO_SYS:
+ SLOGD("sss tid %d (%s)", tid, thread_name);
+ break;
+ default:
SLOGD("??? tid %d (%s)", tid, thread_name);
+ break;
}
#endif
@@ -299,6 +362,9 @@ const char *get_sched_policy_name(SchedPolicy policy)
static const char * const strings[SP_CNT] = {
[SP_BACKGROUND] = "bg",
[SP_FOREGROUND] = "fg",
+ [SP_SYSTEM] = " ",
+ [SP_AUDIO_APP] = "aa",
+ [SP_AUDIO_SYS] = "as",
};
if ((policy < SP_CNT) && (strings[policy] != NULL))
return strings[policy];
diff --git a/rootdir/init.rc b/rootdir/init.rc
index 69b8e44..212edf4 100644
--- a/rootdir/init.rc
+++ b/rootdir/init.rc
@@ -80,25 +80,47 @@ loglevel 3
write /proc/sys/kernel/kptr_restrict 2
write /proc/sys/kernel/dmesg_restrict 1
write /proc/sys/vm/mmap_min_addr 32768
+ write /proc/sys/kernel/sched_rt_runtime_us 950000
+ write /proc/sys/kernel/sched_rt_period_us 1000000
# Create cgroup mount points for process groups
mkdir /dev/cpuctl
mount cgroup none /dev/cpuctl cpu
chown system system /dev/cpuctl
chown system system /dev/cpuctl/tasks
- chmod 0777 /dev/cpuctl/tasks
+ chmod 0660 /dev/cpuctl/tasks
write /dev/cpuctl/cpu.shares 1024
+ write /dev/cpuctl/cpu.rt_runtime_us 950000
+ write /dev/cpuctl/cpu.rt_period_us 1000000
- mkdir /dev/cpuctl/fg_boost
- chown system system /dev/cpuctl/fg_boost/tasks
- chmod 0777 /dev/cpuctl/fg_boost/tasks
- write /dev/cpuctl/fg_boost/cpu.shares 1024
+ mkdir /dev/cpuctl/foreground
+ chown system system /dev/cpuctl/foreground/tasks
+ chmod 0666 /dev/cpuctl/foreground/tasks
+ write /dev/cpuctl/foreground/cpu.shares 1024
+ write /dev/cpuctl/foreground/cpu.rt_runtime_us 0
+ write /dev/cpuctl/foreground/cpu.rt_period_us 1000000
mkdir /dev/cpuctl/bg_non_interactive
chown system system /dev/cpuctl/bg_non_interactive/tasks
- chmod 0777 /dev/cpuctl/bg_non_interactive/tasks
+ chmod 0666 /dev/cpuctl/bg_non_interactive/tasks
# 5.0 %
write /dev/cpuctl/bg_non_interactive/cpu.shares 52
+ write /dev/cpuctl/bg_non_interactive/cpu.rt_runtime_us 0
+ write /dev/cpuctl/bg_non_interactive/cpu.rt_period_us 1000000
+
+ mkdir /dev/cpuctl/audio_app
+ chown system system /dev/cpuctl/audio_app/tasks
+ chmod 0660 /dev/cpuctl/audio_app/tasks
+ write /dev/cpuctl/audio_app/cpu.shares 10
+ write /dev/cpuctl/audio_app/cpu.rt_runtime_us 50000
+ write /dev/cpuctl/audio_app/cpu.rt_period_us 1000000
+
+ mkdir /dev/cpuctl/audio_sys
+ chown system system /dev/cpuctl/audio_sys/tasks
+ chmod 0660 /dev/cpuctl/audio_sys/tasks
+ write /dev/cpuctl/audio_sys/cpu.shares 10
+ write /dev/cpuctl/audio_sys/cpu.rt_runtime_us 50000
+ write /dev/cpuctl/audio_sys/cpu.rt_period_us 1000000
# Allow everybody to read the xt_qtaguid resource tracking misc dev.
# This is needed by any process that uses socket tagging.
@@ -213,7 +235,7 @@ on boot
# Memory management. Basic kernel parameters, and allow the high
# level system server to be able to adjust the kernel OOM driver
-# paramters to match how it is managing things.
+# parameters to match how it is managing things.
write /proc/sys/vm/overcommit_memory 1
write /proc/sys/vm/min_free_order_shift 4
chown root system /sys/module/lowmemorykiller/parameters/adj
generated by cgit v1.1 at 2025-02-09 20:35:30 +0000