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authorSamuel Thibault <samuel.thibault@ens-lyon.org>2015-02-07 22:09:09 +0100
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2015-02-07 22:09:09 +0100
commitbd959902bcb2e71b4f3ac72535c4d2fe86f4ce79 (patch)
tree25fb3259c3e35d99f582ec39a23db0b10ac44ed3
parentd5131d3c1e4b71b5ce3bcd629ef019812b1412cf (diff)
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hurd: map nice levels 1-to-1 with Mach prio levels
-rw-r--r--ChangeLog3
-rw-r--r--hurd/hurd/resource.h4
2 files changed, 5 insertions, 2 deletions
diff --git a/ChangeLog b/ChangeLog
index fa48858f52..03a987aa9e 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -14,6 +14,9 @@
 	[__USE_MISC] (chflags, fchflags): Declare functions.
 	* hurd/hurdselect.c (_hurd_select): In the poll case, do not return
 	EINVAL when nfds is greater than FD_SETSIZE.
+	* hurd/hurd/resource.h (MACH_PRIORITY_TO_NICE,
+	NICE_TO_MACH_PRIORITY): Align nice levels on Mach priorities from 5 to
+	45.
 
 2015-02-06  Roland McGrath  <roland@hack.frob.com>
 
diff --git a/hurd/hurd/resource.h b/hurd/hurd/resource.h
index e43d8e8b74..e9931e528a 100644
--- a/hurd/hurd/resource.h
+++ b/hurd/hurd/resource.h
@@ -42,8 +42,8 @@ extern error_t _hurd_priority_which_map (enum __priority_which which, int who,
 
 /* Convert between Mach priority values and the priority
    values used by getpriority, setpriority, and nice.  */
-#define MACH_PRIORITY_TO_NICE(prio) (2 * ((prio) - 12))
-#define NICE_TO_MACH_PRIORITY(nice) (12 + ((nice) / 2))
+#define MACH_PRIORITY_TO_NICE(prio) ((prio) - 25)
+#define NICE_TO_MACH_PRIORITY(nice) ((nice) + 25)