summaryrefslogtreecommitdiff
path: root/arch/ia64
diff options
context:
space:
mode:
authorAndreas Schwab <schwab@linux-m68k.org>2011-12-28 15:57:15 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2011-12-29 16:31:57 -0800
commit34845636a184f3be91a531098192592cbe6db587 (patch)
tree1c216e37f536a71dae94e41db3f1e059f9ac70a5 /arch/ia64
parente26a51148f3ebd859bca8bf2e0f212839b447f62 (diff)
procfs: do not confuse jiffies with cputime64_t
Commit 2a95ea6c0d129b4 ("procfs: do not overflow get_{idle,iowait}_time for nohz") did not take into account that one some architectures jiffies and cputime use different units. This causes get_idle_time() to return numbers in the wrong units, making the idle time fields in /proc/stat wrong. Instead of converting the usec value returned by get_cpu_{idle,iowait}_time_us to units of jiffies, use the new function usecs_to_cputime64 to convert it to the correct unit of cputime64_t. Signed-off-by: Andreas Schwab <schwab@linux-m68k.org> Acked-by: Michal Hocko <mhocko@suse.cz> Cc: Arnd Bergmann <arnd@arndb.de> Cc: "Artem S. Tashkinov" <t.artem@mailcity.com> Cc: Dave Jones <davej@redhat.com> Cc: Alexey Dobriyan <adobriyan@gmail.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/ia64')
-rw-r--r--arch/ia64/include/asm/cputime.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/ia64/include/asm/cputime.h b/arch/ia64/include/asm/cputime.h
index 6073b187528a..5a274af31b2b 100644
--- a/arch/ia64/include/asm/cputime.h
+++ b/arch/ia64/include/asm/cputime.h
@@ -60,6 +60,7 @@ typedef u64 cputime64_t;
*/
#define cputime_to_usecs(__ct) ((__ct) / NSEC_PER_USEC)
#define usecs_to_cputime(__usecs) ((__usecs) * NSEC_PER_USEC)
+#define usecs_to_cputime64(__usecs) usecs_to_cputime(__usecs)
/*
* Convert cputime <-> seconds