On Mon, Aug 24, 2020 at 01:20:25PM +0800, Jiang Biao wrote:
> From: Jiang Biao
>
> pci_read_config() could block several ms in kernel space, mainly
> caused by the while loop to call pci_user_read_config_dword().
> Singel pci_user_read_config_dword() loop could consume 130us+,
> |
Hi,
On Thu, 17 Sep 2020 at 00:56, Bjorn Helgaas wrote:
>
> On Sun, Sep 13, 2020 at 12:27:09PM +0800, Jiang Biao wrote:
> > On Thu, 10 Sep 2020 at 09:59, Bjorn Helgaas wrote:
> > > On Thu, Sep 10, 2020 at 09:54:02AM +0800, Jiang Biao wrote:
> > > > On Thu, 10 Sep 2020 at 09:25, Bjorn Helgaas wro
On Sun, Sep 13, 2020 at 12:27:09PM +0800, Jiang Biao wrote:
> On Thu, 10 Sep 2020 at 09:59, Bjorn Helgaas wrote:
> > On Thu, Sep 10, 2020 at 09:54:02AM +0800, Jiang Biao wrote:
> > > On Thu, 10 Sep 2020 at 09:25, Bjorn Helgaas wrote:
> > > > On Mon, Aug 24, 2020 at 01:20:25PM +0800, Jiang Biao wr
Hi, Bjorn
On Thu, 10 Sep 2020 at 09:59, Bjorn Helgaas wrote:
>
> On Thu, Sep 10, 2020 at 09:54:02AM +0800, Jiang Biao wrote:
> > Hi,
> >
> > On Thu, 10 Sep 2020 at 09:25, Bjorn Helgaas wrote:
> > >
> > > On Mon, Aug 24, 2020 at 01:20:25PM +0800, Jiang Biao wrote:
> > > > From: Jiang Biao
> > >
On Thu, Sep 10, 2020 at 09:54:02AM +0800, Jiang Biao wrote:
> Hi,
>
> On Thu, 10 Sep 2020 at 09:25, Bjorn Helgaas wrote:
> >
> > On Mon, Aug 24, 2020 at 01:20:25PM +0800, Jiang Biao wrote:
> > > From: Jiang Biao
> > >
> > > pci_read_config() could block several ms in kernel space, mainly
> > > c
Hi,
On Thu, 10 Sep 2020 at 09:59, Bjorn Helgaas wrote:
>
> On Thu, Sep 10, 2020 at 09:54:02AM +0800, Jiang Biao wrote:
> > Hi,
> >
> > On Thu, 10 Sep 2020 at 09:25, Bjorn Helgaas wrote:
> > >
> > > On Mon, Aug 24, 2020 at 01:20:25PM +0800, Jiang Biao wrote:
> > > > From: Jiang Biao
> > > >
> >
Hi,
On Thu, 10 Sep 2020 at 09:25, Bjorn Helgaas wrote:
>
> On Mon, Aug 24, 2020 at 01:20:25PM +0800, Jiang Biao wrote:
> > From: Jiang Biao
> >
> > pci_read_config() could block several ms in kernel space, mainly
> > caused by the while loop to call pci_user_read_config_dword().
> > Singel pci_u
On Mon, Aug 24, 2020 at 01:20:25PM +0800, Jiang Biao wrote:
> From: Jiang Biao
>
> pci_read_config() could block several ms in kernel space, mainly
> caused by the while loop to call pci_user_read_config_dword().
> Singel pci_user_read_config_dword() loop could consume 130us+,
> |
kindly ping :)
On Mon, 24 Aug 2020 at 13:20, Jiang Biao wrote:
>
> From: Jiang Biao
>
> pci_read_config() could block several ms in kernel space, mainly
> caused by the while loop to call pci_user_read_config_dword().
> Singel pci_user_read_config_dword() loop could consume 130us+,
>
From: Jiang Biao
pci_read_config() could block several ms in kernel space, mainly
caused by the while loop to call pci_user_read_config_dword().
Singel pci_user_read_config_dword() loop could consume 130us+,
|pci_user_read_config_dword() {
| _raw_spin_lock_irq
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