[QUESTION] The cost of local interrupt enable/disable

• To: lkml <[email protected]>
• Subject: [QUESTION] The cost of local interrupt enable/disable
• From: Tejun Heo <[email protected]>
• Date: Sat, 17 Sep 2005 23:00:09 +0900
• Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com; h=received:message-id:date:from:user-agent:x-accept-language:mime-version:to:subject:content-type:content-transfer-encoding; b=itW2ci5fHB7do0ie4ulaY8hEOOlAiBI315QpxOc0CKufjwWmaOZ9KPYNh40EHao3VXoVmHjD3cUZ6njvWQAfpumEVrl6MDpkYAZZ18P1hcfT+K7p8xQIDiejckRMjDsNysUa+TcuimBCvgDVc5OITXugTYMHB2Nl8KSDJSjpgpY=
• Sender: [email protected]
• User-agent: Debian Thunderbird 1.0.6 (X11/20050803)

 Hello, guys.

I'm curious about the cost of local_irq_enable/disable()'s on various architectures. I found a freebsd discussion thread by googling which says that each takes 3 cycles on i386 (very cheap), but for Pentium4, people are talking in the order of several hundreds cycles. Are these correct? How about other architectures?

 TIA.

--
tejun
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• Follow-Ups:
  • Re: [QUESTION] The cost of local interrupt enable/disable
    • From: Anton Blanchard <[email protected]>

• Prev by Date: Re: [PATCH] hwmon Kconfig for hdaps.
• Next by Date: Re: [QUESTION] The cost of local interrupt enable/disable
• Previous by thread: [PATCH] [MMC] wbsd version bump
• Next by thread: Re: [QUESTION] The cost of local interrupt enable/disable
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]