> -----Original Message-----
> From: Xu, Rosen <rosen...@intel.com>
> Sent: Tuesday, January 25, 2022 9:43 AM
> To: Huang, Wei <wei.hu...@intel.com>; dev@dpdk.org; Zhang, Qi Z
> <qi.z.zh...@intel.com>
> Cc: sta...@dpdk.org; Zhang, Tianfei <tianfei.zh...@intel.com>; Yigit, Ferruh
> <ferruh.yi...@intel.com>; step...@networkplumber.org;
> david.march...@redhat.com
> Subject: RE: [PATCH v8] raw/ifpga: fix pthread cannot join
>
> Hi,
>
> > -----Original Message-----
> > From: Huang, Wei <wei.hu...@intel.com>
> > Sent: Monday, January 24, 2022 11:50
> > To: dev@dpdk.org; Xu, Rosen <rosen...@intel.com>; Zhang, Qi Z
> > <qi.z.zh...@intel.com>
> > Cc: sta...@dpdk.org; Zhang, Tianfei <tianfei.zh...@intel.com>; Yigit,
> > Ferruh <ferruh.yi...@intel.com>; step...@networkplumber.org;
> > david.march...@redhat.com
> > Subject: [PATCH v8] raw/ifpga: fix pthread cannot join
> >
> > From: Tianfei Zhang <tianfei.zh...@intel.com>
> >
> > When we want to close a thread, we should set a flag to notify thread
> > handler function.
> >
> > Fixes: 9c006c45 ("raw/ifpga: scan PCIe BDF device tree")
> > Cc: sta...@dpdk.org
> >
> > Signed-off-by: Tianfei Zhang <tianfei.zh...@intel.com>
> > ---
> > v2: update commit log
> > ---
> > v3: set thread id to 0 after pthread_join
> > ---
> > v4: do not evaluate and set pthread_t variable
> > ---
> > v5: use builtin atomic function to access ifpga_monitor_start flag
> > ---
> > v6: use __atomic_xxx_n to replace rte_atomicNN_xxx
> > ---
> > v7: fix typo
> > ---
> > v8: solve patch applying issue
> > ---
> > drivers/raw/ifpga/ifpga_rawdev.c | 12 ++++++------
> > 1 file changed, 6 insertions(+), 6 deletions(-)
> >
> > diff --git a/drivers/raw/ifpga/ifpga_rawdev.c
> > b/drivers/raw/ifpga/ifpga_rawdev.c
> > index 8d9db58..19c2357 100644
> > --- a/drivers/raw/ifpga/ifpga_rawdev.c
> > +++ b/drivers/raw/ifpga/ifpga_rawdev.c
> > @@ -497,7 +497,7 @@ static int set_surprise_link_check_aer(
> > int gsd_enable, ret;
> > #define MS 1000
> >
> > - while (1) {
> > + while (__atomic_load_n(&ifpga_monitor_start,
> > __ATOMIC_RELAXED)) {
> > gsd_enable = 0;
> > for (i = 0; i < IFPGA_RAWDEV_NUM; i++) {
> > ifpga_rdev = &ifpga_rawdevices[i]; @@ -525,7 +525,7
> @@ static int
> > set_surprise_link_check_aer( {
> > int ret;
> >
> > - if (ifpga_monitor_start == 0) {
> > + if (!__atomic_load_n(&ifpga_monitor_start, __ATOMIC_RELAXED)) {
> > ret = rte_ctrl_thread_create(&ifpga_monitor_start_thread,
> > "ifpga-monitor", NULL,
> > ifpga_rawdev_gsd_handle, NULL);
> @@ -534,7 +534,7 @@ static
> > int set_surprise_link_check_aer(
> > "Fail to create ifpga monitor thread");
> > return -1;
> > }
> > - ifpga_monitor_start = 1;
> > + __atomic_store_n(&ifpga_monitor_start, 1,
> > __ATOMIC_RELAXED);
> > }
> >
> > return 0;
> > @@ -544,7 +544,9 @@ static int set_surprise_link_check_aer( {
> > int ret;
> >
> > - if (ifpga_monitor_start == 1) {
> > + if (__atomic_load_n(&ifpga_monitor_start, __ATOMIC_RELAXED)) {
> > + __atomic_store_n(&ifpga_monitor_start, 0,
> > __ATOMIC_RELAXED);
> > +
> > ret = pthread_cancel(ifpga_monitor_start_thread);
> > if (ret)
> > IFPGA_RAWDEV_PMD_ERR("Can't cancel the
> thread"); @@ -553,8 +555,6
> > @@ static int set_surprise_link_check_aer(
> > if (ret)
> > IFPGA_RAWDEV_PMD_ERR("Can't join the thread");
> >
> > - ifpga_monitor_start = 0;
> > -
> > return ret;
> > }
> >
> > --
> > 1.8.3.1
>
> Acked-by: Rosen Xu <rosen...@intel.com>
Applied to dpdk-next-net-intel.
Thanks
Qi
>
