diff options
Diffstat (limited to 'meta-moblin/packages/sreadahead/sreadahead-0.02')
| -rw-r--r-- | meta-moblin/packages/sreadahead/sreadahead-0.02/set_to_idle.patch | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/meta-moblin/packages/sreadahead/sreadahead-0.02/set_to_idle.patch b/meta-moblin/packages/sreadahead/sreadahead-0.02/set_to_idle.patch new file mode 100644 index 0000000000..b48659048a --- /dev/null +++ b/meta-moblin/packages/sreadahead/sreadahead-0.02/set_to_idle.patch @@ -0,0 +1,39 @@ +diff -Naurp sreadahead-0.02/readahead.c sreadahead-0.02-nice/readahead.c +--- sreadahead-0.02/readahead.c 2008-11-06 00:57:17.000000000 -0500 ++++ sreadahead-0.02-nice/readahead.c 2008-11-06 02:28:29.000000000 -0500 +@@ -26,7 +26,18 @@ + #include <errno.h> + + #include "readahead.h" ++#include <sys/syscall.h> + ++# if defined(__i386__) ++# define __NR_ioprio_set 289 ++# elif defined(__x86_64__) ++# define __NR_ioprio_set 251 ++# else ++# error "Unsupported arch" ++# endif ++ ++#define IOPRIO_WHO_PROCESS 1 ++#define IOPRIO_CLASS_SHIFT 13 + #define MAXR 1024 + static struct readahead files[MAXR]; + static unsigned int total_files = 0; +@@ -68,7 +79,15 @@ void *one_thread(void *ptr) + + int main(int argc, char **argv) + { +- FILE *file = fopen("/etc/readahead.packed", "r"); ++ int iopriority = 7; /* hard code for idle */ ++ int iopriority_class = 3; /* 3 stands for idle */ ++ int pid = 0; ++ FILE *file; ++ ++ if (syscall(__NR_ioprio_set, IOPRIO_WHO_PROCESS, pid, iopriority | iopriority_class << IOPRIO_CLASS_SHIFT) == -1) ++ perror("Can not set priority to idle class"); ++ ++ file = fopen("/etc/readahead.packed", "r"); + if (!file) { + perror("Couldnt open /etc/readahead.packed"); + return -errno; |