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Commit b54bd9be authored by Cliff Wickman's avatar Cliff Wickman Committed by Ingo Molnar
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x86/UV2: Add accounting for BAU strong nacks 



This patch adds separate accounting of UV2 message "strong
nack's" in the BAU statistics.

Signed-off-by: default avatarCliff Wickman <cpw@sgi.com>
Link: http://lkml.kernel.org/r/20120116212238.GF5767@sgi.com


Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
parent 88ed9dd7

arch/x86/include/asm/uv/uv_bau.h

+1 −0
Original line number Diff line number Diff line
@@ -483,6 +483,7 @@ struct ptc_stats { 
						   requests */

	unsigned long	s_stimeout;		/* source side timeouts */

	unsigned long	s_dtimeout;		/* destination side timeouts */

	unsigned long	s_strongnacks;		/* number of strong nack's */

	unsigned long	s_time;			/* time spent in sending side */

	unsigned long	s_retriesok;		/* successful retries */

	unsigned long	s_ntargcpu;		/* total number of cpu's

arch/x86/platform/uv/tlb_uv.c

+7 −5
Original line number Diff line number Diff line
@@ -635,13 +635,15 @@ static int uv2_wait_completion(struct bau_desc *bau_desc, 
		 * our message and its state will stay IDLE.

		 */

		if ((descriptor_stat == UV2H_DESC_SOURCE_TIMEOUT) ||

		    (descriptor_stat == UV2H_DESC_DEST_STRONG_NACK) ||

		    (descriptor_stat == UV2H_DESC_DEST_PUT_ERR)) {

			stat->s_stimeout++;

			return FLUSH_GIVEUP;

		} else if (descriptor_stat == UV2H_DESC_DEST_STRONG_NACK) {

			stat->s_strongnacks++;

			bcp->conseccompletes = 0;

			return FLUSH_GIVEUP;

		} else if (descriptor_stat == UV2H_DESC_DEST_TIMEOUT) {

			stat->s_dtimeout++;

			ttm = get_cycles();

			bcp->conseccompletes = 0;

			return FLUSH_RETRY_TIMEOUT;

		} else {
@@ -1346,7 +1348,7 @@ static int ptc_seq_show(struct seq_file *file, void *data) 
		seq_printf(file,

			"remotehub numuvhubs numuvhubs16 numuvhubs8 ");

		seq_printf(file,

			"numuvhubs4 numuvhubs2 numuvhubs1 dto retries rok ");

		    "numuvhubs4 numuvhubs2 numuvhubs1 dto snacks retries rok ");

		seq_printf(file,

			"resetp resett giveup sto bz throt swack recv rtime ");

		seq_printf(file,
@@ -1364,10 +1366,10 @@ static int ptc_seq_show(struct seq_file *file, void *data) 
			   stat->s_ntargremotes, stat->s_ntargcpu,

			   stat->s_ntarglocaluvhub, stat->s_ntargremoteuvhub,

			   stat->s_ntarguvhub, stat->s_ntarguvhub16);

		seq_printf(file, "%ld %ld %ld %ld %ld ",

		seq_printf(file, "%ld %ld %ld %ld %ld %ld ",

			   stat->s_ntarguvhub8, stat->s_ntarguvhub4,

			   stat->s_ntarguvhub2, stat->s_ntarguvhub1,

			   stat->s_dtimeout);

			   stat->s_dtimeout, stat->s_strongnacks);

		seq_printf(file, "%ld %ld %ld %ld %ld %ld %ld %ld ",

			   stat->s_retry_messages, stat->s_retriesok,

			   stat->s_resets_plug, stat->s_resets_timeout,