All of lore.kernel.org
 help / color / mirror / Atom feed
From: Robert Richter <robert.richter@amd.com>
To: Ingo Molnar <mingo@elte.hu>
Cc: LKML <linux-kernel@vger.kernel.org>,
	oprofile-list <oprofile-list@lists.sourceforge.net>,
	Robert Richter <robert.richter@amd.com>,
	stable <stable@kernel.org>
Subject: [PATCH 04/15] oprofile/x86: remove node check in AMD IBS initialization
Date: Fri, 26 Feb 2010 18:29:56 +0100	[thread overview]
Message-ID: <1267205407-6523-5-git-send-email-robert.richter@amd.com> (raw)
In-Reply-To: <1267205407-6523-1-git-send-email-robert.richter@amd.com>

Standard AMD systems have the same number of nodes as there are
northbridge devices. However, there may kernel configurations
(especially for 32 bit) or system setups exist, where the node number
is different or it can not be detected properly. Thus the check is not
reliable and may fail though IBS setup was fine. For this reason it is
better to remove the check.

Cc: stable <stable@kernel.org>
Signed-off-by: Robert Richter <robert.richter@amd.com>
---
 arch/x86/oprofile/op_model_amd.c |   10 ----------
 1 files changed, 0 insertions(+), 10 deletions(-)

diff --git a/arch/x86/oprofile/op_model_amd.c b/arch/x86/oprofile/op_model_amd.c
index 2b9c68d..4eb3071 100644
--- a/arch/x86/oprofile/op_model_amd.c
+++ b/arch/x86/oprofile/op_model_amd.c
@@ -389,16 +389,6 @@ static int init_ibs_nmi(void)
 		return 1;
 	}
 
-#ifdef CONFIG_NUMA
-	/* Sanity check */
-	/* Works only for 64bit with proper numa implementation. */
-	if (nodes != num_possible_nodes()) {
-		printk(KERN_DEBUG "Failed to setup CPU node(s) for IBS, "
-			"found: %d, expected %d",
-			nodes, num_possible_nodes());
-		return 1;
-	}
-#endif
 	return 0;
 }
 
-- 
1.6.6



  parent reply	other threads:[~2010-02-26 17:35 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-02-26 17:29 [PATCH 00/15] oprofile fixes and updates for v2.6.34 Robert Richter
2010-02-26 17:29 ` [PATCH 01/15] oprofile: remove tracing build dependency Robert Richter
2010-02-26 17:29 ` [PATCH 02/15] oprofile: remove EXPERIMENTAL from the config option description Robert Richter
2010-02-26 17:29 ` [PATCH 03/15] oprofile/x86: remove OPROFILE_IBS config option Robert Richter
2010-02-26 17:29 ` Robert Richter [this message]
2010-02-26 17:29 ` [PATCH 05/15] oprofile/x86: implement IBS cpuid feature detection Robert Richter
2010-02-26 17:29 ` [PATCH 06/15] oprofile/x86: implement lsfr pseudo-random number generator for IBS Robert Richter
2010-02-26 17:29 ` [PATCH 07/15] oprofile/x86: implement randomization for IBS periodic op counter Robert Richter
2010-02-26 17:30 ` [PATCH 08/15] oprofile/x86: warn user if a counter is already active Robert Richter
2010-02-26 17:30 ` [PATCH 09/15] oprofile/x86: add comment to counter-in-use warning Robert Richter
2010-02-26 17:30 ` [PATCH 10/15] oprofile/x86: fix perfctr nmi reservation for mulitplexing Robert Richter
2010-02-26 17:30 ` [PATCH 11/15] oprofile/x86: use kzalloc() instead of kmalloc() Robert Richter
2010-02-26 17:30 ` [PATCH 12/15] oprofile/x86: fix msr access to reserved counters Robert Richter
2010-02-26 17:30 ` [PATCH 13/15] perf, x86: make IBS macros available in perf_event.h Robert Richter
2010-02-26 17:30 ` [PATCH 14/15] perf, x86: add some IBS macros to perf_event.h Robert Richter
2010-02-26 17:30 ` [PATCH 15/15] perf, x86: rename macro in ARCH_PERFMON_EVENTSEL_ENABLE Robert Richter
2010-02-27  9:03 ` [PATCH 00/15] oprofile fixes and updates for v2.6.34 Ingo Molnar
2010-03-01 14:39   ` Robert Richter
2010-03-02 10:01     ` Ingo Molnar

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1267205407-6523-5-git-send-email-robert.richter@amd.com \
    --to=robert.richter@amd.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=mingo@elte.hu \
    --cc=oprofile-list@lists.sourceforge.net \
    --cc=stable@kernel.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.