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staging: lustre: lprocfs: implement log2 using bitops

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This patch implements log2 using fls.

Signed-off-by: Andrew Perepechko <andrew_perepechko@xyratex.com>
Reviewed-by: Alexander Boyko <Alexander_Boyko@xyratex.com>
Reviewed-by: alexander_zarochentsev@xyratex.com
Reviewed-by: Vitaly Fertman <Vitaly_Fertman@xyratex.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3496
Xyratex-bug-id: MRP-999
Reviewed-on: http://review.whamcloud.com/6757
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Bob Glossman <bob.glossman@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andrew Perepechko 2016-04-12 16:14:12 -04:00 committed by Greg Kroah-Hartman
parent b59d812d00
commit b3ffe666ca
1 changed files with 3 additions and 3 deletions
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6
drivers/staging/lustre/lustre/obdclass/lprocfs_status.c
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@ -1472,10 +1472,10 @@ EXPORT_SYMBOL(lprocfs_oh_tally);
void lprocfs_oh_tally_log2(struct obd_histogram *oh, unsigned int value)
{
unsigned int val;
unsigned int val = 0;
for (val = 0; ((1 << val) < value) && (val <= OBD_HIST_MAX); val++)
;
if (likely(value != 0))
val = min(fls(value - 1), OBD_HIST_MAX);
lprocfs_oh_tally(oh, val);
}