Merge "Allow pixelflinger to work when NX (No Execute) is enabled." into kraken
diff --git a/adb/usb_vendors.c b/adb/usb_vendors.c
index 7f3cb54..6d85fb1 100644
--- a/adb/usb_vendors.c
+++ b/adb/usb_vendors.c
@@ -67,6 +67,8 @@
#define VENDOR_ID_KYOCERA 0x0482
// Pantech's USB Vendor ID
#define VENDOR_ID_PANTECH 0x10A9
+// Qualcomm's USB Vendor ID
+#define VENDOR_ID_QUALCOMM 0x05c6
/** built-in vendor list */
@@ -87,6 +89,7 @@
VENDOR_ID_ZTE,
VENDOR_ID_KYOCERA,
VENDOR_ID_PANTECH,
+ VENDOR_ID_QUALCOMM,
};
#define BUILT_IN_VENDOR_COUNT (sizeof(builtInVendorIds)/sizeof(builtInVendorIds[0]))
diff --git a/libcutils/sched_policy.c b/libcutils/sched_policy.c
index 6d2727b..f9c111e 100644
--- a/libcutils/sched_policy.c
+++ b/libcutils/sched_policy.c
@@ -27,8 +27,10 @@
#include "cutils/log.h"
#ifdef HAVE_SCHED_H
+#ifdef HAVE_PTHREADS
#include <sched.h>
+#include <pthread.h>
#include <cutils/sched_policy.h>
@@ -42,15 +44,28 @@
#define POLICY_DEBUG 0
+static pthread_once_t the_once = PTHREAD_ONCE_INIT;
+
static int __sys_supports_schedgroups = -1;
-/* Add tid to the group defined by dev_path ("/dev/cpuctl/.../tasks") */
-static int add_tid_to_cgroup(int tid, const char *dev_path)
+// 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;
+
+/* Add tid to the scheduling group defined by the policy */
+static int add_tid_to_cgroup(int tid, SchedPolicy policy)
{
int fd;
- if ((fd = open(dev_path, O_WRONLY)) < 0) {
- SLOGE("add_tid_to_cgroup failed to open '%s' (%s)\n", dev_path,
- strerror(errno));
+
+ if (policy == SP_BACKGROUND) {
+ fd = bg_cgroup_fd;
+ } else {
+ fd = normal_cgroup_fd;
+ }
+
+ if (fd < 0) {
+ SLOGE("add_tid_to_cgroup failed; background=%d\n",
+ policy == SP_BACKGROUND ? 1 : 0);
return -1;
}
@@ -65,30 +80,38 @@
}
if (write(fd, ptr, end - ptr) < 0) {
- close(fd);
- /*
- * If the thread is in the process of exiting,
- * don't flag an error
- */
- if (errno == ESRCH)
- return 0;
- SLOGW("add_tid_to_cgroup failed to write '%s' to '%s' (%s)\n",
- ptr, dev_path, strerror(errno));
+ /*
+ * If the thread is in the process of exiting,
+ * don't flag an error
+ */
+ 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);
return -1;
}
- close(fd);
return 0;
}
-static inline void initialize()
-{
- if (__sys_supports_schedgroups < 0) {
- if (!access("/dev/cpuctl/tasks", F_OK)) {
- __sys_supports_schedgroups = 1;
- } else {
- __sys_supports_schedgroups = 0;
+static void __initialize(void) {
+ char* filename;
+ if (!access("/dev/cpuctl/tasks", F_OK)) {
+ __sys_supports_schedgroups = 1;
+
+ filename = "/dev/cpuctl/tasks";
+ normal_cgroup_fd = open(filename, O_WRONLY);
+ if (normal_cgroup_fd < 0) {
+ SLOGE("open of %s failed: %s\n", filename, strerror(errno));
}
+
+ filename = "/dev/cpuctl/bg_non_interactive/tasks";
+ bg_cgroup_fd = open(filename, O_WRONLY);
+ if (bg_cgroup_fd < 0) {
+ SLOGE("open of %s failed: %s\n", filename, strerror(errno));
+ }
+ } else {
+ __sys_supports_schedgroups = 0;
}
}
@@ -166,7 +189,7 @@
int get_sched_policy(int tid, SchedPolicy *policy)
{
- initialize();
+ pthread_once(&the_once, __initialize);
if (__sys_supports_schedgroups) {
char grpBuf[32];
@@ -198,7 +221,7 @@
int set_sched_policy(int tid, SchedPolicy policy)
{
- initialize();
+ pthread_once(&the_once, __initialize);
#if POLICY_DEBUG
char statfile[64];
@@ -233,14 +256,7 @@
#endif
if (__sys_supports_schedgroups) {
- const char *dev_path;
- if (policy == SP_BACKGROUND) {
- dev_path = "/dev/cpuctl/bg_non_interactive/tasks";
- } else {
- dev_path = "/dev/cpuctl/tasks";
- }
-
- if (add_tid_to_cgroup(tid, dev_path)) {
+ if (add_tid_to_cgroup(tid, policy)) {
if (errno != ESRCH && errno != ENOENT)
return -errno;
}
@@ -257,4 +273,5 @@
return 0;
}
+#endif /* HAVE_PTHREADS */
#endif /* HAVE_SCHED_H */