Linux-SCSI Archive on lore.kernel.org
 help / color / Atom feed
From: hongwus@codeaurora.org
To: Can Guo <cang@codeaurora.org>
Cc: asutoshd@codeaurora.org, nguyenb@codeaurora.org,
	rnayak@codeaurora.org, sh425.lee@samsung.com,
	linux-scsi@vger.kernel.org, kernel-team@android.com,
	saravanak@google.com, salyzyn@google.com,
	Andy Gross <agross@kernel.org>,
	Bjorn Andersson <bjorn.andersson@linaro.org>,
	Alim Akhtar <alim.akhtar@samsung.com>,
	Avri Altman <avri.altman@wdc.com>,
	"James E.J. Bottomley" <jejb@linux.ibm.com>,
	"Martin K. Petersen" <martin.petersen@oracle.com>,
	linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-scsi-owner@vger.kernel.org
Subject: Re: [PATCH v7 3/8] scsi: ufs-qcom: Remove testbus dump in ufs_qcom_dump_dbg_regs
Date: Tue, 28 Jul 2020 13:32:09 +0800
Message-ID: <8121784a3019723997a16cc6791e5e5a@codeaurora.org> (raw)
In-Reply-To: <1595912460-8860-4-git-send-email-cang@codeaurora.org>

On 2020-07-28 13:00, Can Guo wrote:
> Dumping testbus registers is heavy enough to cause stability issues
> sometime, just remove them as of now.
> 
> Signed-off-by: Can Guo <cang@codeaurora.org>
> ---
>  drivers/scsi/ufs/ufs-qcom.c | 32 --------------------------------
>  1 file changed, 32 deletions(-)
> 
> diff --git a/drivers/scsi/ufs/ufs-qcom.c b/drivers/scsi/ufs/ufs-qcom.c
> index 7da27ee..96e0999 100644
> --- a/drivers/scsi/ufs/ufs-qcom.c
> +++ b/drivers/scsi/ufs/ufs-qcom.c
> @@ -1620,44 +1620,12 @@ int ufs_qcom_testbus_config(struct 
> ufs_qcom_host *host)
>  	return 0;
>  }
> 
> -static void ufs_qcom_testbus_read(struct ufs_hba *hba)
> -{
> -	ufshcd_dump_regs(hba, UFS_TEST_BUS, 4, "UFS_TEST_BUS ");
> -}
> -
> -static void ufs_qcom_print_unipro_testbus(struct ufs_hba *hba)
> -{
> -	struct ufs_qcom_host *host = ufshcd_get_variant(hba);
> -	u32 *testbus = NULL;
> -	int i, nminor = 256, testbus_len = nminor * sizeof(u32);
> -
> -	testbus = kmalloc(testbus_len, GFP_KERNEL);
> -	if (!testbus)
> -		return;
> -
> -	host->testbus.select_major = TSTBUS_UNIPRO;
> -	for (i = 0; i < nminor; i++) {
> -		host->testbus.select_minor = i;
> -		ufs_qcom_testbus_config(host);
> -		testbus[i] = ufshcd_readl(hba, UFS_TEST_BUS);
> -	}
> -	print_hex_dump(KERN_ERR, "UNIPRO_TEST_BUS ", DUMP_PREFIX_OFFSET,
> -			16, 4, testbus, testbus_len, false);
> -	kfree(testbus);
> -}
> -
>  static void ufs_qcom_dump_dbg_regs(struct ufs_hba *hba)
>  {
>  	ufshcd_dump_regs(hba, REG_UFS_SYS1CLK_1US, 16 * 4,
>  			 "HCI Vendor Specific Registers ");
> 
> -	/* sleep a bit intermittently as we are dumping too much data */
>  	ufs_qcom_print_hw_debug_reg_all(hba, NULL, 
> ufs_qcom_dump_regs_wrapper);
> -	udelay(1000);
> -	ufs_qcom_testbus_read(hba);
> -	udelay(1000);
> -	ufs_qcom_print_unipro_testbus(hba);
> -	udelay(1000);
>  }
> 
>  /**

Reviewed-by: Hongwu Su <hongwus@codeaurora.org>

  reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-28  5:00 [PATCH v7 0/8] Fix up and simplify error recovery mechanism Can Guo
2020-07-28  5:00 ` [PATCH v7 1/8] scsi: ufs: Add checks before setting clk-gating states Can Guo
2020-07-29  6:47   ` Stanley Chu
2020-07-28  5:00 ` [PATCH v7 2/8] ufs: ufs-qcom: Fix race conditions caused by func ufs_qcom_testbus_config Can Guo
2020-07-28  5:00 ` [PATCH v7 3/8] scsi: ufs-qcom: Remove testbus dump in ufs_qcom_dump_dbg_regs Can Guo
2020-07-28  5:32   ` hongwus [this message]
2020-07-28  7:53   ` Avri Altman
2020-07-28  5:00 ` [PATCH v7 4/8] scsi: ufs: Add some debug infos to ufshcd_print_host_state Can Guo
2020-07-28  5:32   ` hongwus
2020-07-28 18:01   ` Asutosh Das (asd)
2020-07-29  7:00   ` Stanley Chu
2020-07-28  5:00 ` [PATCH v7 5/8] scsi: ufs: Fix concurrency of error handler and other error recovery paths Can Guo
2020-07-28  5:00 ` [PATCH v7 6/8] scsi: ufs: Recover hba runtime PM error in error handler Can Guo
2020-07-28  5:00 ` [PATCH v7 7/8] scsi: ufs: Move dumps in IRQ handler to " Can Guo
2020-07-28 18:06   ` Asutosh Das (asd)
2020-07-29 13:02     ` Can Guo
2020-07-29 22:45       ` Asutosh Das (asd)
2020-07-28  5:00 ` [PATCH v7 8/8] scsi: ufs: Fix a racing problem btw error handler and runtime PM ops Can Guo
2020-07-28 21:44 ` [PATCH v7 0/8] Fix up and simplify error recovery mechanism Bean Huo

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=8121784a3019723997a16cc6791e5e5a@codeaurora.org \
    --to=hongwus@codeaurora.org \
    --cc=agross@kernel.org \
    --cc=alim.akhtar@samsung.com \
    --cc=asutoshd@codeaurora.org \
    --cc=avri.altman@wdc.com \
    --cc=bjorn.andersson@linaro.org \
    --cc=cang@codeaurora.org \
    --cc=jejb@linux.ibm.com \
    --cc=kernel-team@android.com \
    --cc=linux-arm-msm@vger.kernel.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-scsi-owner@vger.kernel.org \
    --cc=linux-scsi@vger.kernel.org \
    --cc=martin.petersen@oracle.com \
    --cc=nguyenb@codeaurora.org \
    --cc=rnayak@codeaurora.org \
    --cc=salyzyn@google.com \
    --cc=saravanak@google.com \
    --cc=sh425.lee@samsung.com \
    /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

Linux-SCSI Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/linux-scsi/0 linux-scsi/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 linux-scsi linux-scsi/ https://lore.kernel.org/linux-scsi \
		linux-scsi@vger.kernel.org
	public-inbox-index linux-scsi

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.linux-scsi


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git