From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757479Ab0E0Cnq (ORCPT ); Wed, 26 May 2010 22:43:46 -0400 Received: from vms173009pub.verizon.net ([206.46.173.9]:46025 "EHLO vms173009pub.verizon.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933141Ab0E0Cmx (ORCPT ); Wed, 26 May 2010 22:42:53 -0400 From: Len Brown To: x86@kernel.org, linux-pm@lists.linux-foundation.org Cc: linux-kernel@vger.kernel.org, Len Brown Subject: [PATCH 5/8] sched: clarify commment for TS_POLLING Date: Wed, 26 May 2010 22:42:28 -0400 Message-id: <4a831611847e8965ed5f3328e52fe8758115b951.1274926772.git.len.brown@intel.com> X-Mailer: git-send-email 1.7.1.231.gd0b16 In-reply-to: <1274928151-30919-1-git-send-email-lenb@kernel.org> References: <1274928151-30919-1-git-send-email-lenb@kernel.org> In-reply-to: References: X-Patchwork-Hint: ignore Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Len Brown TS_POLLING set tells the scheduler a task will poll need_resched() to look for work. TS_POLLING clear tells resched_task() and wake_up_idle_cpu() that the remote CPU is sleeping in idle, and thus requires a reschedule interrupt to wake them to notice work. Update the description of TS_POLLING to reflect how it works. "cleared when sleeping in idle, requiring reschedule interrupt" Signed-off-by: Len Brown Acked-by: Peter Zijlstra --- arch/x86/include/asm/thread_info.h | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/arch/x86/include/asm/thread_info.h b/arch/x86/include/asm/thread_info.h index e0d2890..0a14da2 100644 --- a/arch/x86/include/asm/thread_info.h +++ b/arch/x86/include/asm/thread_info.h @@ -241,8 +241,8 @@ static inline struct thread_info *current_thread_info(void) #define TS_USEDFPU 0x0001 /* FPU was used by this task this quantum (SMP) */ #define TS_COMPAT 0x0002 /* 32bit syscall active (64BIT)*/ -#define TS_POLLING 0x0004 /* true if in idle loop - and not sleeping */ +#define TS_POLLING 0x0004 /* clear when sleeping in idle + requiring reschedule interrupt */ #define TS_RESTORE_SIGMASK 0x0008 /* restore signal mask in do_signal() */ #define TS_XSAVE 0x0010 /* Use xsave/xrstor */ -- 1.6.0.6