From: Mike Frysinger <vapier@gentoo.org>
To: qemu-devel@nongnu.org, Riku Voipio <riku.voipio@iki.fi>
Subject: [Qemu-devel] [PATCH] linux-user: implement sched_{g,s}etaffinity
Date: Wed, 26 Jan 2011 21:16:40 -0500 [thread overview]
Message-ID: <1296094600-3897-1-git-send-email-vapier@gentoo.org> (raw)
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
---
linux-user/syscall.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 50 insertions(+), 0 deletions(-)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 3e285c6..f95429f 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -235,6 +235,12 @@ _syscall6(int,sys_futex,int *,uaddr,int,op,int,val,
const struct timespec *,timeout,int *,uaddr2,int,val3)
#endif
#endif
+#define __NR_sys_sched_getaffinity __NR_sched_getaffinity
+_syscall3(int, sys_sched_getaffinity, pid_t, pid, unsigned int, len,
+ unsigned long *, user_mask_ptr);
+#define __NR_sys_sched_setaffinity __NR_sched_setaffinity
+_syscall3(int, sys_sched_setaffinity, pid_t, pid, unsigned int, len,
+ unsigned long *, user_mask_ptr);
static bitmask_transtbl fcntl_flags_tbl[] = {
{ TARGET_O_ACCMODE, TARGET_O_WRONLY, O_ACCMODE, O_WRONLY, },
@@ -6374,6 +6380,50 @@ abi_long do_syscall(void *cpu_env, int num, abi_long arg1,
return value. */
ret = -TARGET_ENOTDIR;
break;
+ case TARGET_NR_sched_getaffinity:
+ {
+ unsigned int num_sets, host_mask_size, i;
+ unsigned long *host_mask;
+ abi_ulong *target_mask;
+
+ num_sets = arg2 / sizeof(abi_ulong);
+ host_mask_size = num_sets * sizeof(*host_mask);
+ host_mask = alloca(host_mask_size);
+
+ ret = get_errno(sys_sched_getaffinity(arg1, host_mask_size, host_mask));
+
+ if (!is_error(ret)) {
+ if (!lock_user_struct(VERIFY_WRITE, target_mask, arg3, 0)) {
+ goto efault;
+ }
+ for (i = 0; i < num_sets; ++i) {
+ target_mask[i] = tswapl(host_mask[i]);
+ }
+ unlock_user_struct(target_mask, arg2, 1);
+ }
+ }
+ break;
+ case TARGET_NR_sched_setaffinity:
+ {
+ unsigned int num_sets, host_mask_size, i;
+ unsigned long *host_mask;
+ abi_ulong *target_mask;
+
+ num_sets = arg2 / sizeof(abi_ulong);
+ host_mask_size = num_sets * sizeof(*host_mask);
+ host_mask = alloca(host_mask_size);
+
+ if (!lock_user_struct(VERIFY_READ, target_mask, arg3, 1)) {
+ goto efault;
+ }
+ for (i = 0; i < num_sets; ++i) {
+ host_mask[i] = tswapl(target_mask[i]);
+ }
+ unlock_user_struct(target_mask, arg2, 0);
+
+ ret = get_errno(sys_sched_setaffinity(arg1, host_mask_size, host_mask));
+ }
+ break;
case TARGET_NR_sched_setparam:
{
struct sched_param *target_schp;
--
1.7.4.rc2
next reply other threads:[~2011-01-27 2:16 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-27 2:16 Mike Frysinger [this message]
2011-02-01 8:50 ` [Qemu-devel] [PATCH v2] linux-user: implement sched_{g, s}etaffinity Mike Frysinger
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