search for: wake_par

Glauber noticed long delays between hitting a key, and seeing data come up on the virtual console. Looking into this, I found that the wake_parent routine that reads from all devices was actually starving out the parent after sending the parent a signal to wake up. The thing is, the child which takes the console input is recognized by the scheduler as an interactive process. The parent, doesn't do so much, so it is recognized more as...

Glauber noticed long delays between hitting a key, and seeing data come up on the virtual console. Looking into this, I found that the wake_parent routine that reads from all devices was actually starving out the parent after sending the parent a signal to wake up. The thing is, the child which takes the console input is recognized by the scheduler as an interactive process. The parent, doesn't do so much, so it is recognized more as...

...err(1, "Bringing interface %s up", devname); + + if (ioctl(fd, SIOCGIFHWADDR, &ifr) != 0) + err(1, "getting hw address for %s", devname); + + memcpy(hwaddr, ifr.ifr_hwaddr.sa_data, 6); +} + +/* We send lguest_add signals while input is pending: avoids races. */ +static void wake_parent(int pipefd, struct devices *devices) +{ + int parent = getppid(); + nice(19); + + set_fd(pipefd, devices); + + for (;;) { + fd_set rfds = devices->infds; + + select(devices->max_infd+1, &rfds, NULL, NULL, NULL); + if (FD_ISSET(pipefd, &rfds)) { + int ignorefd; + if (read(pip...

...err(1, "Bringing interface %s up", devname); + + if (ioctl(fd, SIOCGIFHWADDR, &ifr) != 0) + err(1, "getting hw address for %s", devname); + + memcpy(hwaddr, ifr.ifr_hwaddr.sa_data, 6); +} + +/* We send lguest_add signals while input is pending: avoids races. */ +static void wake_parent(int pipefd, struct devices *devices) +{ + int parent = getppid(); + nice(19); + + set_fd(pipefd, devices); + + for (;;) { + fd_set rfds = devices->infds; + + select(devices->max_infd+1, &rfds, NULL, NULL, NULL); + if (FD_ISSET(pipefd, &rfds)) { + int ignorefd; + if (read(pip...

...ting to /dev/lguest"); + return fd; +} + +static void set_fd(int fd, struct device_list *devices) +{ + FD_SET(fd, &devices->infds); + if (fd > devices->max_infd) + devices->max_infd = fd; +} + +/* We send lguest_add signals while input is pending: avoids races. */ +static void wake_parent(int pipefd, struct device_list *devices) +{ + nice(19); + + set_fd(pipefd, devices); + + for (;;) { + fd_set rfds = devices->infds; + + select(devices->max_infd+1, &rfds, NULL, NULL, NULL); + if (FD_ISSET(pipefd, &rfds)) { + int ignorefd; + if (read(pipefd, &ignorefd, si...

...ting to /dev/lguest"); + return fd; +} + +static void set_fd(int fd, struct device_list *devices) +{ + FD_SET(fd, &devices->infds); + if (fd > devices->max_infd) + devices->max_infd = fd; +} + +/* We send lguest_add signals while input is pending: avoids races. */ +static void wake_parent(int pipefd, struct device_list *devices) +{ + nice(19); + + set_fd(pipefd, devices); + + for (;;) { + fd_set rfds = devices->infds; + + select(devices->max_infd+1, &rfds, NULL, NULL, NULL); + if (FD_ISSET(pipefd, &rfds)) { + int ignorefd; + if (read(pipefd, &ignorefd, si...

Hi all, These are the patches I'm planning to submit for 2.6.24. Comments gratefully accepted. Along with the usual cleanups and improvements are Jes' de-i386-ification patches, and a new "virtio" mechanism designed to be shared with KVM (and hopefully other hypervisors). Cheers, Rusty. Documentation/lguest/Makefile | 30 Documentation/lguest/lguest.c

Hi all, These are the patches I'm planning to submit for 2.6.24. Comments gratefully accepted. Along with the usual cleanups and improvements are Jes' de-i386-ification patches, and a new "virtio" mechanism designed to be shared with KVM (and hopefully other hypervisors). Cheers, Rusty. Documentation/lguest/Makefile | 30 Documentation/lguest/lguest.c