BUPT-OS
/
libevl
4
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

lib/utils: add scheduler control service

This commit is contained in:
Philippe Gerum 2019-03-08 19:16:23 +01:00
parent c93f95cccc
commit b90d18b421
4 changed files with 38 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

5
include/evenless/utils.h
View File

@ -17,6 +17,11 @@ ssize_t evl_log(int fd, const void *buf, size_t len);
int evl_printf(int fd, const char *fmt, ...);
int evl_sched_control(int policy,
union evl_sched_ctlparam *param,
union evl_sched_ctlinfo *info,
int cpu);
#ifdef __cplusplus
}
#endif

2
lib/init.c
View File

@ -32,7 +32,7 @@ static struct sigaction orig_sigshadow, orig_sigdebug;
static struct evl_core_info core_info;
static int evl_ctlfd = -1;
int evl_ctlfd = -1;
void *evl_shared_memory = NULL;

2
lib/internal.h
View File

@ -66,6 +66,8 @@ extern int (*arch_clock_gettime)(clockid_t clk_id,
extern void *evl_shared_memory;
extern int evl_ctlfd;
extern int evl_mono_clockfd;
extern int evl_real_clockfd;

30
lib/utils.c
View File

@ -5,11 +5,17 @@
*/
#include <sys/types.h>
#include <sys/ioctl.h>
#include <stdarg.h>
#include <unistd.h>
#include <stdio.h>
#include <errno.h>
#include <fcntl.h>
#include <evenless/thread.h>
#include <evenless/syscall.h>
#include <evenless/utils.h>
#include <uapi/evenless/sched.h>
#include <uapi/evenless/control.h>
#include "internal.h"
ssize_t evl_log(int fd, const void *buf, size_t len)
@ -32,3 +38,27 @@ int evl_printf(int fd, const char *fmt, ...)
return evl_log(fd, buf, len);
}
int evl_sched_control(int policy,
union evl_sched_ctlparam *param,
union evl_sched_ctlinfo *info,
int cpu)
{
struct evl_sched_ctlreq ctlreq;
int ret;
if (evl_ctlfd < 0)
return -ENXIO;
ctlreq.policy = policy;
ctlreq.cpu = cpu;
ctlreq.param = param;
ctlreq.info = info;
if (evl_is_inband())
ret = ioctl(evl_ctlfd, EVL_CTLIOC_SCHEDCTL, &ctlreq);
else
ret = oob_ioctl(evl_ctlfd, EVL_CTLIOC_SCHEDCTL, &ctlreq);
return ret ? -errno : 0;
}