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Re: [PATCH 2/2] Revert "nohz: Fix idle ticks in cpu summary line of /pro

To: Srivatsa Vaddagiri <>
Subject: Re: [PATCH 2/2] Revert "nohz: Fix idle ticks in cpu summary line of /proc/stat" (commit 7386cdbf2f57ea8cff3c9fde93f206e58b9fe13f).
From: Sergei Shtylyov <>
Date: Fri, 04 Jan 2013 16:13:42 +0400
Cc: Russell King <>, "Paul E. McKenney" <>, Stephen Boyd <>,, Mike Frysinger <>,, Ralf Baechle <>,, Benjamin Herrenschmidt <>,, Martin Schwidefsky <>,, Paul Mundt <>,, "David S. Miller" <>,, Thomas Gleixner <>, Ingo Molnar <>, "H. Peter Anvin" <>,,,,,
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On 04-01-2013 6:58, Srivatsa Vaddagiri wrote:

With offline cpus no longer beeing seen in nohz mode (ts->idle_active=0), we
don't need the check for cpu_online() introduced in commit 7386cdbf. Offline

Please also specify the summary of that commit in parens (or however you like).

cpu's idle time as last recorded in its ts->idle_sleeptime will be reported
(thus excluding its offline time as part of idle time statistics).

Signed-off-by: Srivatsa Vaddagiri <>

WBR, Sergei

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