From: "Stephen M. Cameron" <scameron@beardog.cce.hp.com>
To: james.bottomley@hansenpartnership.com
Cc: linux-scsi@vger.kernel.org, mike.miller@hp.com,
linux-kernel@vger.kernel.org, thenzl@redhat.com,
akpm@linux-foundation.org, smcameron@yahoo.com
Subject: [PATCH 06/11] hpsa: limit commands allocated on reset_devices
Date: Thu, 06 Jan 2011 14:48:13 -0600 [thread overview]
Message-ID: <20110106204813.10753.83892.stgit@beardog.cce.hp.com> (raw)
In-Reply-To: <20110106204429.10753.92575.stgit@beardog.cce.hp.com>
From: Stephen M. Cameron <scameron@beardog.cce.hp.com>
This is to conserve memory in a memory-limited kdump scenario
Signed-off-by: Stephen M. Cameron <scameron@beardog.cce.hp.com>
---
drivers/scsi/hpsa.c | 5 +++++
1 files changed, 5 insertions(+), 0 deletions(-)
diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c
index 82b94e2..688b243 100644
--- a/drivers/scsi/hpsa.c
+++ b/drivers/scsi/hpsa.c
@@ -3470,6 +3470,11 @@ static int __devinit hpsa_find_cfgtables(struct ctlr_info *h)
static void __devinit hpsa_get_max_perf_mode_cmds(struct ctlr_info *h)
{
h->max_commands = readl(&(h->cfgtable->MaxPerformantModeCommands));
+
+ /* Limit commands in memory limited kdump scenario. */
+ if (reset_devices && h->max_commands > 32)
+ h->max_commands = 32;
+
if (h->max_commands < 16) {
dev_warn(&h->pdev->dev, "Controller reports "
"max supported commands of %d, an obvious lie. "
next prev parent reply other threads:[~2011-01-06 20:48 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-01-06 20:47 [PATCH 00/11] hpsa: updates, January 2011 Stephen M. Cameron
2011-01-06 20:47 ` [PATCH 01/11] hpsa: defend against zero sized buffers in passthru ioctls Stephen M. Cameron
2011-01-06 20:47 ` [PATCH 02/11] hpsa: fixup DMA address before freeing Stephen M. Cameron
2011-01-06 20:47 ` [PATCH 03/11] hpsa: Remove duplicate defines of DIRECT_LOOKUP_ constants Stephen M. Cameron
2011-01-06 20:48 ` [PATCH 04/11] hpsa: fix board status waiting code Stephen M. Cameron
2011-01-06 20:48 ` [PATCH 05/11] hpsa: Use kernel provided PCI state save and restore functions Stephen M. Cameron
2011-01-06 20:48 ` Stephen M. Cameron [this message]
2011-01-06 20:48 ` [PATCH 07/11] hpsa: do not reset unknown boards on reset_devices Stephen M. Cameron
2011-01-06 20:48 ` [PATCH 08/11] hpsa: take the adapter lock in hpsa_wait_for_mode_change_ack Stephen M. Cameron
2011-01-06 20:48 ` [PATCH 09/11] hpsa: allow driver to put controller in either simple or performant mode Stephen M. Cameron
2011-01-06 20:48 ` [PATCH 10/11] hpsa: use usleep_range not msleep for small sleeps Stephen M. Cameron
2011-01-06 20:48 ` [PATCH 11/11] hpsa: Add a per controller commands_outstanding entry in /sys Stephen M. Cameron
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