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Commit b3ffe666 authored by Andrew Perepechko's avatar Andrew Perepechko Committed by Greg Kroah-Hartman
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staging: lustre: lprocfs: implement log2 using bitops 



This patch implements log2 using fls.

Signed-off-by: default avatarAndrew Perepechko <andrew_perepechko@xyratex.com>
Reviewed-by: default avatarAlexander Boyko <Alexander_Boyko@xyratex.com>
Reviewed-by: default avatar <alexander_zarochentsev@xyratex.com>
Reviewed-by: default avatarVitaly 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: default avatarJohn L. Hammond <john.hammond@intel.com>
Reviewed-by: default avatarBob Glossman <bob.glossman@intel.com>
Reviewed-by: default avatarOleg Drokin <oleg.drokin@intel.com>
Signed-off-by: default avatarJames Simmons <jsimmons@infradead.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent b59d812d

drivers/staging/lustre/lustre/obdclass/lprocfs_status.c

+3 −3
Original line number Diff line number Diff line
@@ -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);

}