Re: [PATCH 19.11] eal/freebsd: fix use of newer cpuset macros

[Christian Ehrhardt <christian.ehrhardt@canonical.com>]

On Thu, Jul 28, 2022 at 1:38 PM Bruce Richardson
<bruce.richardson@intel.com> wrote:
>
> FreeBSD has updated its CPU macros to align more with the definitions
> used on Linux[1]. Unfortunately, while this makes compatibility better
> in future, it means we need to have both legacy and newer definition
> support. Use a meson check to determine which set of macros are used.
>
> [1] https://cgit.freebsd.org/src/commit/?id=e2650af157bc

Thank you for the ongoing help keeping the old releases buildable.
This is queued now, it depends if we will have a -rc2 if it will be in
19.11.13 or 19.11.14.

> Bugzilla ID: 1014
> Fixes: c3568ea37670 ("eal: restrict control threads to startup CPU affinity")
> Fixes: b6be16acfeb1 ("eal: fix control thread affinity with --lcores")
>
> Signed-off-by: David Marchand <david.marchand@redhat.com>
> Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
> ---
> This is a backport of commit 2f51bc9c27a4f1da674d66499667155663dcc419
> for 19.11 release tree
> ---
>  lib/librte_eal/freebsd/eal/include/rte_os.h | 16 +++++++++++++++-
>  lib/librte_eal/freebsd/eal/meson.build      | 11 +++++++++++
>  2 files changed, 26 insertions(+), 1 deletion(-)
>
> diff --git a/lib/librte_eal/freebsd/eal/include/rte_os.h b/lib/librte_eal/freebsd/eal/include/rte_os.h
> index 78ee6fd8f4..908c37e9aa 100644
> --- a/lib/librte_eal/freebsd/eal/include/rte_os.h
> +++ b/lib/librte_eal/freebsd/eal/include/rte_os.h
> @@ -17,6 +17,7 @@ extern "C" {
>  #include <pthread_np.h>
>
>  typedef cpuset_t rte_cpuset_t;
> +#ifdef RTE_EAL_FREEBSD_CPUSET_LEGACY
>  #define RTE_CPU_AND(dst, src1, src2) do \
>  { \
>         cpuset_t tmp; \
> @@ -50,7 +51,20 @@ typedef cpuset_t rte_cpuset_t;
>         CPU_ANDNOT(&tmp, src); \
>         CPU_COPY(&tmp, dst); \
>  } while (0)
> -#endif
> +#endif /* CPU_NAND */
> +
> +#else /* RTE_EAL_FREEBSD_CPUSET_LEGACY */
> +
> +#define RTE_CPU_AND CPU_AND
> +#define RTE_CPU_OR CPU_OR
> +#define RTE_CPU_FILL CPU_FILL
> +#define RTE_CPU_NOT(dst, src) do { \
> +       cpu_set_t tmp; \
> +       CPU_FILL(&tmp); \
> +       CPU_XOR(dst, src, &tmp); \
> +} while (0)
> +
> +#endif /* RTE_EAL_FREEBSD_CPUSET_LEGACY */
>
>  #ifdef __cplusplus
>  }
> diff --git a/lib/librte_eal/freebsd/eal/meson.build b/lib/librte_eal/freebsd/eal/meson.build
> index 1426f7e5f1..deb367f44c 100644
> --- a/lib/librte_eal/freebsd/eal/meson.build
> +++ b/lib/librte_eal/freebsd/eal/meson.build
> @@ -20,3 +20,14 @@ env_sources = files('eal_alarm.c',
>  )
>
>  deps += ['kvargs']
> +
> +# test for version of cpuset macros
> +cpuset_test_code = '''
> +        #include <sys/types.h>
> +        #include <sys/cpuset.h>
> +        void cpu_test_or(cpuset_t *s) { CPU_OR(s, s, s); }
> +'''
> +
> +if not cc.compiles(cpuset_test_code, name: 'Detect argument count for CPU_OR')
> +    dpdk_conf.set('RTE_EAL_FREEBSD_CPUSET_LEGACY', 1)
> +endif
> --
> 2.37.1
>


-- 
Christian Ehrhardt
Senior Staff Engineer, Ubuntu Server
Canonical Ltd