diff options
Diffstat (limited to 'meta-moblin/packages/sreadahead/sreadahead-0.02/set_to_idle.patch')
-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 @@ | |||
1 | diff -Naurp sreadahead-0.02/readahead.c sreadahead-0.02-nice/readahead.c | ||
2 | --- sreadahead-0.02/readahead.c 2008-11-06 00:57:17.000000000 -0500 | ||
3 | +++ sreadahead-0.02-nice/readahead.c 2008-11-06 02:28:29.000000000 -0500 | ||
4 | @@ -26,7 +26,18 @@ | ||
5 | #include <errno.h> | ||
6 | |||
7 | #include "readahead.h" | ||
8 | +#include <sys/syscall.h> | ||
9 | |||
10 | +# if defined(__i386__) | ||
11 | +# define __NR_ioprio_set 289 | ||
12 | +# elif defined(__x86_64__) | ||
13 | +# define __NR_ioprio_set 251 | ||
14 | +# else | ||
15 | +# error "Unsupported arch" | ||
16 | +# endif | ||
17 | + | ||
18 | +#define IOPRIO_WHO_PROCESS 1 | ||
19 | +#define IOPRIO_CLASS_SHIFT 13 | ||
20 | #define MAXR 1024 | ||
21 | static struct readahead files[MAXR]; | ||
22 | static unsigned int total_files = 0; | ||
23 | @@ -68,7 +79,15 @@ void *one_thread(void *ptr) | ||
24 | |||
25 | int main(int argc, char **argv) | ||
26 | { | ||
27 | - FILE *file = fopen("/etc/readahead.packed", "r"); | ||
28 | + int iopriority = 7; /* hard code for idle */ | ||
29 | + int iopriority_class = 3; /* 3 stands for idle */ | ||
30 | + int pid = 0; | ||
31 | + FILE *file; | ||
32 | + | ||
33 | + if (syscall(__NR_ioprio_set, IOPRIO_WHO_PROCESS, pid, iopriority | iopriority_class << IOPRIO_CLASS_SHIFT) == -1) | ||
34 | + perror("Can not set priority to idle class"); | ||
35 | + | ||
36 | + file = fopen("/etc/readahead.packed", "r"); | ||
37 | if (!file) { | ||
38 | perror("Couldnt open /etc/readahead.packed"); | ||
39 | return -errno; | ||