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s390/cpum_cf_diag: use get_tod_clock_fast()
author
Heiko Carstens
<hca@linux.ibm.com>
Mon, 1 Feb 2021 20:40:22 +0000
(21:40 +0100)
committer
Vasily Gorbik
<gor@linux.ibm.com>
Tue, 9 Feb 2021 14:57:05 +0000
(15:57 +0100)
Use get_tod_clock_fast() instead of store_tod_clock(), since
store_tod_clock() can be very slow.
Reviewed-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
arch/s390/kernel/perf_cpum_cf_diag.c
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diff --git
a/arch/s390/kernel/perf_cpum_cf_diag.c
b/arch/s390/kernel/perf_cpum_cf_diag.c
index
e949ab8
..
6f6b338
100644
(file)
--- a/
arch/s390/kernel/perf_cpum_cf_diag.c
+++ b/
arch/s390/kernel/perf_cpum_cf_diag.c
@@
-119,7
+119,7
@@
static void cf_diag_trailer(struct cf_trailer_entry *te)
te->speed = 1;
te->clock_base = 1; /* Save clock base */
memcpy(&te->tod_base, &tod_clock_base[1], 8);
-
store_tod_clock((__u64 *)&te->timestamp
);
+
te->timestamp = get_tod_clock_fast(
);
}
/*