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Date: Wed, 11 Jun 2008 07:48:17 +1000
From: Grant Coady <grant_lkml@...o.com.au>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Grant Coady <gcoady.lk@...il.com>, linux-kernel@...r.kernel.org,
kernel-testers@...r.kernel.org, linux-mm@...ck.org,
Keith Packard <keithp@...thp.com>
Subject: Re: 2.6.26-rc5-mm2 lockup up on Intel G33+ICH9R+Core2Duo, -mm1 okay
On Tue, 10 Jun 2008 11:18:32 -0700, Andrew Morton <akpm@...ux-foundation.org> wrote:
>On Tue, 10 Jun 2008 20:20:09 +1000 Grant Coady <grant_lkml@...o.com.au> wrote:
>
>> On Mon, 9 Jun 2008 22:31:45 -0700, Andrew Morton <akpm@...ux-foundation.org> wrote:
>>
>> >
>> >ftp://ftp.kernel.org/pub/linux/kernel/people/akpm/patches/2.6/2.6.26-rc5/2.6.26-rc5-mm2/
>> >
>> >- This is a bugfixed version of 2.6.26-rc5-mm1 - mainly to repair a
>> > vmscan.c bug which would have prevented testing of the other vmscan.c
>> > bugs^Wchanges.
>>
>> No it's not :)
>>
>> -mm1 worked fine here but -mm2 locks up just after saying:
>> agpgart: Detected 7164K stolen memory.
>>
>> Nothing in logs (session not recorded - hit reset to restart).
>>
>> config and dmseg for -mm1 at (same .config for mm2):
>>
>> http://bugsplatter.mine.nu/test/boxen/pooh/config-2.6.26-rc5-mm1a.gz
>> http://bugsplatter.mine.nu/test/boxen/pooh/dmesg-2.6.26-rc5-mm1a.gz
>>
>> Grant.
>
>hm, intel-agp gtt stuff.
>
>Can you please see whether reverting Keith's stuff fixes it?
Yes, it does :)
config + dmesg at: http://bugsplatter.mine.nu/test/boxen/pooh/ (*-mm2b.gz)
Grant.
>
> drivers/char/agp/agp.h | 3 ---
> drivers/char/agp/backend.c | 2 --
> drivers/char/agp/generic.c | 28 ----------------------------
> drivers/char/agp/intel-agp.c | 5 -----
> include/linux/agp_backend.h | 5 -----
> 5 files changed, 43 deletions(-)
>
>diff -puN drivers/char/agp/agp.h~revert-intel-agp-rewrite-gtt-on-resume drivers/char/agp/agp.h
>--- a/drivers/char/agp/agp.h~revert-intel-agp-rewrite-gtt-on-resume
>+++ a/drivers/char/agp/agp.h
>@@ -148,9 +148,6 @@ struct agp_bridge_data {
> char minor_version;
> struct list_head list;
> u32 apbase_config;
>- /* list of agp_memory mapped to the aperture */
>- struct list_head mapped_list;
>- spinlock_t mapped_lock;
> };
>
> #define KB(x) ((x) * 1024)
>diff -puN drivers/char/agp/backend.c~revert-intel-agp-rewrite-gtt-on-resume drivers/char/agp/backend.c
>--- a/drivers/char/agp/backend.c~revert-intel-agp-rewrite-gtt-on-resume
>+++ a/drivers/char/agp/backend.c
>@@ -183,8 +183,6 @@ static int agp_backend_initialize(struct
> rc = -EINVAL;
> goto err_out;
> }
>- INIT_LIST_HEAD(&bridge->mapped_list);
>- spin_lock_init(&bridge->mapped_lock);
>
> return 0;
>
>diff -puN drivers/char/agp/generic.c~revert-intel-agp-rewrite-gtt-on-resume drivers/char/agp/generic.c
>--- a/drivers/char/agp/generic.c~revert-intel-agp-rewrite-gtt-on-resume
>+++ a/drivers/char/agp/generic.c
>@@ -426,10 +426,6 @@ int agp_bind_memory(struct agp_memory *c
>
> curr->is_bound = TRUE;
> curr->pg_start = pg_start;
>- spin_lock(&agp_bridge->mapped_lock);
>- list_add(&curr->mapped_list, &agp_bridge->mapped_list);
>- spin_unlock(&agp_bridge->mapped_lock);
>-
> return 0;
> }
> EXPORT_SYMBOL(agp_bind_memory);
>@@ -462,34 +458,10 @@ int agp_unbind_memory(struct agp_memory
>
> curr->is_bound = FALSE;
> curr->pg_start = 0;
>- spin_lock(&curr->bridge->mapped_lock);
>- list_del(&curr->mapped_list);
>- spin_unlock(&curr->bridge->mapped_lock);
> return 0;
> }
> EXPORT_SYMBOL(agp_unbind_memory);
>
>-/**
>- * agp_rebind_emmory - Rewrite the entire GATT, useful on resume
>- */
>-int agp_rebind_memory(void)
>-{
>- struct agp_memory *curr;
>- int ret_val = 0;
>-
>- spin_lock(&agp_bridge->mapped_lock);
>- list_for_each_entry(curr, &agp_bridge->mapped_list, mapped_list) {
>- ret_val = curr->bridge->driver->insert_memory(curr,
>- curr->pg_start,
>- curr->type);
>- if (ret_val != 0)
>- break;
>- }
>- spin_unlock(&agp_bridge->mapped_lock);
>- return ret_val;
>-}
>-EXPORT_SYMBOL(agp_rebind_memory);
>-
> /* End - Routines for handling swapping of agp_memory into the GATT */
>
>
>diff -puN drivers/char/agp/intel-agp.c~revert-intel-agp-rewrite-gtt-on-resume drivers/char/agp/intel-agp.c
>--- a/drivers/char/agp/intel-agp.c~revert-intel-agp-rewrite-gtt-on-resume
>+++ a/drivers/char/agp/intel-agp.c
>@@ -2176,7 +2176,6 @@ static void __devexit agp_intel_remove(s
> static int agp_intel_resume(struct pci_dev *pdev)
> {
> struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
>- int ret_val;
>
> pci_restore_state(pdev);
>
>@@ -2204,10 +2203,6 @@ static int agp_intel_resume(struct pci_d
> else if (bridge->driver == &intel_i965_driver)
> intel_i915_configure();
>
>- ret_val = agp_rebind_memory();
>- if (ret_val != 0)
>- return ret_val;
>-
> return 0;
> }
> #endif
>diff -puN include/linux/agp_backend.h~revert-intel-agp-rewrite-gtt-on-resume include/linux/agp_backend.h
>--- a/include/linux/agp_backend.h~revert-intel-agp-rewrite-gtt-on-resume
>+++ a/include/linux/agp_backend.h
>@@ -30,8 +30,6 @@
> #ifndef _AGP_BACKEND_H
> #define _AGP_BACKEND_H 1
>
>-#include <linux/list.h>
>-
> #ifndef TRUE
> #define TRUE 1
> #endif
>@@ -88,8 +86,6 @@ struct agp_memory {
> u8 is_bound;
> u8 is_flushed;
> u8 vmalloc_flag;
>- /* list of agp_memory mapped to the aperture */
>- struct list_head mapped_list;
> };
>
> #define AGP_NORMAL_MEMORY 0
>@@ -108,7 +104,6 @@ extern struct agp_memory *agp_allocate_m
> extern int agp_copy_info(struct agp_bridge_data *, struct agp_kern_info *);
> extern int agp_bind_memory(struct agp_memory *, off_t);
> extern int agp_unbind_memory(struct agp_memory *);
>-extern int agp_rebind_memory(void);
> extern void agp_enable(struct agp_bridge_data *, u32);
> extern struct agp_bridge_data *agp_backend_acquire(struct pci_dev *);
> extern void agp_backend_release(struct agp_bridge_data *);
>_
--
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