From 4936a3b90d79dd8775c6ac23c2cf2dcebe29abde Mon Sep 17 00:00:00 2001 From: Chris Wilson Date: Mon, 9 Aug 2010 14:20:10 -0700 Subject: x86/hpet: Use the FSEC_PER_SEC constant for femto-second periods The current computation, introduced with f12a15be63, of FSEC_PER_SEC using the multiplication of (FSEC_PER_NSEC * NSEC_PER_SEC) is performed only with 32bit integers on small machines, resulting in an overflow and a *very* short intervals being programmed. An interrupt storm follows. Note that we also have to specify FSEC_PER_SEC as being long long to overcome the same limitations. Signed-off-by: Chris Wilson Signed-off-by: John Stultz Cc: Thomas Gleixner Acked-by: Ingo Molnar Acked-by: H. Peter Anvin Signed-off-by: Linus Torvalds --- include/linux/time.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux/time.h') diff --git a/include/linux/time.h b/include/linux/time.h index cb34e35fabac..12612701b1ae 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -38,7 +38,7 @@ extern struct timezone sys_tz; #define NSEC_PER_MSEC 1000000L #define USEC_PER_SEC 1000000L #define NSEC_PER_SEC 1000000000L -#define FSEC_PER_SEC 1000000000000000L +#define FSEC_PER_SEC 1000000000000000LL #define TIME_T_MAX (time_t)((1UL << ((sizeof(time_t) << 3) - 1)) - 1) -- cgit v1.2.3 From c7887325230aec47d47a32562a6e26014a0fafca Mon Sep 17 00:00:00 2001 From: David Howells Date: Wed, 11 Aug 2010 11:26:22 +0100 Subject: Mark arguments to certain syscalls as being const Mark arguments to certain system calls as being const where they should be but aren't. The list includes: (*) The filename arguments of various stat syscalls, execve(), various utimes syscalls and some mount syscalls. (*) The filename arguments of some syscall helpers relating to the above. (*) The buffer argument of various write syscalls. Signed-off-by: David Howells Acked-by: David S. Miller Signed-off-by: Linus Torvalds --- include/linux/time.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/linux/time.h') diff --git a/include/linux/time.h b/include/linux/time.h index 12612701b1ae..9f15ac7ab92a 100644 --- a/include/linux/time.h +++ b/include/linux/time.h @@ -150,7 +150,7 @@ extern void do_gettimeofday(struct timeval *tv); extern int do_settimeofday(struct timespec *tv); extern int do_sys_settimeofday(struct timespec *tv, struct timezone *tz); #define do_posix_clock_monotonic_gettime(ts) ktime_get_ts(ts) -extern long do_utimes(int dfd, char __user *filename, struct timespec *times, int flags); +extern long do_utimes(int dfd, const char __user *filename, struct timespec *times, int flags); struct itimerval; extern int do_setitimer(int which, struct itimerval *value, struct itimerval *ovalue); -- cgit v1.2.3