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Old 05-14-2008, 11:05 AM
maximilian attems
Default asm-{alpha,h8300,um,v850,xtensa}/param.h: unbreak HZ for userspace

could we please get an ack or nack on that patch.
checked linux-next and it doesn't appear there.
without it currently perl 5.10 doesn't build on alpha:
perl.c: In function 'perl_construct':
perl.c:388: error: 'CONFIG_HZ' undeclared (first use in this function)
-> http://buildd.debian.org/fetch.cgi?pkg=perl;ver=5.10.0-10;arch=alpha;stamp=1210252894


I noticed this because alpha was broken due to the recent bdc807871d58285737.
Most arches do something like this in their asm/param.h:
#ifdef __KERNEL__
# define HZ CONFIG_HZ
# define HZ 100
A few arches though (namely alpha/h8300/um/v850/xtensa) either do no set HZ at
all for !__KERNEL__, or they set it wrongly. This should bring all arches in
line by setting up HZ for userspace.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
diff --git a/include/asm-alpha/param.h b/include/asm-alpha/param.h
index 0982f1d..d300950 100644
--- a/include/asm-alpha/param.h
+++ b/include/asm-alpha/param.h
@@ -5,8 +5,12 @@
hardware ignores reprogramming. We also need userland buy-in to the
change in HZ, since this is visible in the wait4 resources etc. */

+#ifdef __KERNEL__
#define HZ CONFIG_HZ
#define USER_HZ HZ
+#define HZ 100

#define EXEC_PAGESIZE 8192

diff --git a/include/asm-h8300/param.h b/include/asm-h8300/param.h
index 04f64f1..1c72fb8 100644
--- a/include/asm-h8300/param.h
+++ b/include/asm-h8300/param.h
@@ -1,14 +1,12 @@
#ifndef _H8300_PARAM_H
#define _H8300_PARAM_H

-#ifndef HZ
-#define HZ CONFIG_HZ
#ifdef __KERNEL__
+#define HZ CONFIG_HZ
#define USER_HZ HZ
+#define HZ 100

#define EXEC_PAGESIZE 4096
diff --git a/include/asm-um/param.h b/include/asm-um/param.h
index 4cd4a22..e44f4e6 100644
--- a/include/asm-um/param.h
+++ b/include/asm-um/param.h
@@ -13,6 +13,8 @@
#define HZ CONFIG_HZ
#define USER_HZ 100 /* .. some user interfaces are in "ticks" */
#define CLOCKS_PER_SEC (USER_HZ) /* frequency at which times() counts */
+#define HZ 100

diff --git a/include/asm-v850/param.h b/include/asm-v850/param.h
index 2818326..4391f5f 100644
--- a/include/asm-v850/param.h
+++ b/include/asm-v850/param.h
@@ -26,6 +26,8 @@
# define HZ CONFIG_HZ
# define USER_HZ 100
+# define HZ 100

#endif /* __V850_PARAM_H__ */
diff --git a/include/asm-xtensa/param.h b/include/asm-xtensa/param.h
index 82ad34d..ba03d5a 100644
--- a/include/asm-xtensa/param.h
+++ b/include/asm-xtensa/param.h
@@ -15,6 +15,8 @@
# define HZ CONFIG_HZ /* internal timer frequency */
# define USER_HZ 100 /* for user interfaces in "ticks" */
# define CLOCKS_PER_SEC (USER_HZ) /* frequnzy at which times() counts */
+# define HZ 100

#define EXEC_PAGESIZE 4096
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