On 25-Jan-19 2:00 PM, Ilya Maximets wrote:
On 25.01.2019 16:48, Burakov, Anatoly wrote:
On 25-Jan-19 9:53 AM, David Marchand wrote:


On Fri, Jan 25, 2019 at 9:06 AM Ilya Maximets <i.maxim...@samsung.com 
<mailto:i.maxim...@samsung.com>> wrote:

     On 25.01.2019 10:55, Ilya Maximets wrote:
      > Dynamic memory mode allowes zero socket-mem because all the
      > required memory could be allocated on demand.
      >
      > Fixes: 339c2244b4f1 ("eal: fix parsing zero socket memory and
     limits")
      > Cc: sta...@dpdk.org <mailto:sta...@dpdk.org>
      >

     Reported-by: Shuai Zhu <shuaix....@intel.com
     <mailto:shuaix....@intel.com>>

      > Signed-off-by: Ilya Maximets <i.maxim...@samsung.com
     <mailto:i.maxim...@samsung.com>>

      > ---
      >  test/test/test_eal_flags.c | 6 +++---
      >  1 file changed, 3 insertions(+), 3 deletions(-)
      >
      > diff --git a/test/test/test_eal_flags.c b/test/test/test_eal_flags.c
      > index e3a60c7ae..81e345b87 100644
      > --- a/test/test/test_eal_flags.c
      > +++ b/test/test/test_eal_flags.c
      > @@ -1158,7 +1158,7 @@ test_memory_flags(void)
      >       const char *argv1[] = {prgname, "-c", "10", "-n", "2",
      >                       "--file-prefix=" memtest, "-m",
     DEFAULT_MEM_SIZE};
      >
      > -     /* invalid (zero) --socket-mem flag */
      > +     /* valid (zero) --socket-mem flag */
      >       const char *argv2[] = {prgname, "-c", "10", "-n", "2",
      >                       "--file-prefix=" memtest,
     "--socket-mem=0,0,0,0"};
      >
      > @@ -1256,8 +1256,8 @@ test_memory_flags(void)
      >               printf("Error - process failed with valid -m flag!\n");
      >               return -1;
      >       }
      > -     if (launch_proc(argv2) == 0) {
      > -             printf("Error - process run ok with invalid (zero)
     --socket-mem!\n");
      > +     if (launch_proc(argv2) != 0) {
      > +             printf("Error - process failed with valid (zero)
     --socket-mem!\n");
      >               return -1;
      >       }
      >
      >


Reviewed-by: David Marchand <david.march...@redhat.com 
<mailto:david.march...@redhat.com>>


--
David Marchand

Now that i think of it, maybe it's not that simple.

--socket-mem/-m flag with zero is still an invalid value *if* --legacy-mem is 
involved. However, it is a valid value in non-legacy mode.

So maybe the test should reflect this, and the previous fix should have instead 
added a check for legacy mode rather than disabling the zero check outright.


I don't think that it's a big deal, because "--socket-mem=0 --legacy-mem"
quickly fails with clear:

   EAL: WARNING: Master core has no memory on local socket!

IMHO, It's actually more informative than previous:

   EAL: invalid parameters for --socket-limit

I agree that we could add a test for a legacy-mem cases, but that's a bit
different task.


Good point. Maybe leave it as is then :)

Acked-by: Anatoly Burakov <anatoly.bura...@intel.com>

--
Thanks,
Anatoly

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