The patch titled latencytop: fix per task accumulator has been removed from the -mm tree. Its filename was latencytop-fix-per-task-accumulator.patch This patch was dropped because it was merged into mainline or a subsystem tree The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/ ------------------------------------------------------ Subject: latencytop: fix per task accumulator From: Ken Chen <kenchen@xxxxxxxxxx> Per task latencytop accumulator prematurely terminates due to erroneous placement of latency_record_count. It should be incremented whenever a new record is allocated instead of increment on every latencytop event. Also fix search iterator to only search known record events instead of blindly searching all pre-allocated space. Signed-off-by: Ken Chen <kenchen@xxxxxxxxxx> Reviewed-by: Arjan van de Ven <arjan@xxxxxxxxxxxxx> Cc: <stable@xxxxxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- kernel/latencytop.c | 17 ++++++++--------- 1 file changed, 8 insertions(+), 9 deletions(-) diff -puN kernel/latencytop.c~latencytop-fix-per-task-accumulator kernel/latencytop.c --- a/kernel/latencytop.c~latencytop-fix-per-task-accumulator +++ a/kernel/latencytop.c @@ -194,14 +194,7 @@ __account_scheduler_latency(struct task_ account_global_scheduler_latency(tsk, &lat); - /* - * short term hack; if we're > 32 we stop; future we recycle: - */ - tsk->latency_record_count++; - if (tsk->latency_record_count >= LT_SAVECOUNT) - goto out_unlock; - - for (i = 0; i < LT_SAVECOUNT; i++) { + for (i = 0; i < tsk->latency_record_count; i++) { struct latency_record *mylat; int same = 1; @@ -227,8 +220,14 @@ __account_scheduler_latency(struct task_ } } + /* + * short term hack; if we're > 32 we stop; future we recycle: + */ + if (tsk->latency_record_count >= LT_SAVECOUNT) + goto out_unlock; + /* Allocated a new one: */ - i = tsk->latency_record_count; + i = tsk->latency_record_count++; memcpy(&tsk->latency_record[i], &lat, sizeof(struct latency_record)); out_unlock: _ Patches currently in -mm which might be from kenchen@xxxxxxxxxx are -- To unsubscribe from this list: send the line "unsubscribe mm-commits" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html