code.ossystems Code Review - openembedded-core.git/blob

   1 From e4909f329245db52415102e96fc7c99ca1445d05 Mon Sep 17 00:00:00 2001
   2 From: Neil Horman <nhorman@gmail.com>
   3 Date: Thu, 15 Jul 2021 08:48:10 -0400
   4 Subject: [PATCH] Allow for use of either pthread affinity set methods
   5
   6 musl has support for pthread_setaffinity_np, but not
   7 pthread_attr_setaffinity_np.  so check for hte existence of either
   8 function in configure, and use the appropriate one.
   9
  10 Upstream-Status: Backport
  11 Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
  12 Signed-off-by: Alexander Kanavin <alex.kanavin@gmail.com>
  13 ---
  14  rngd_jitter.c | 15 ++++++++++++++-
  15  1 file changed, 14 insertions(+), 1 deletion(-)
  16
  17 diff --git a/rngd_jitter.c b/rngd_jitter.c
  18 index ea29436..5c7e09e 100644
  19 --- a/rngd_jitter.c
  20 +++ b/rngd_jitter.c
  21 @@ -67,12 +67,25 @@ static int rngd_notime_start(void *ctx,
  22         for(i=i-1;i>=0;i--) {
  23                 CPU_SET(i,cpus);
  24         }
  25 -       pthread_attr_setaffinity_np(&thread_ctx->notime_pthread_attr, cpusize, cpus);
  26
  27 +        /*
  28 +        * Note that only one of:
  29 +        * HAVE_PTHREAD_ATTR_SETAFFINITY
  30 +        * and
  31 +        * HAVE_PTHREAD_SETAFFINITY
  32 +        * Will ever be set, as per the configure.ac logic
  33 +        */
  34 +#ifdef HAVE_PTHREAD_ATTR_SETAFFINITY
  35 +       pthread_attr_setaffinity_np(&thread_ctx->notime_pthread_attr, cpusize, cpus);
  36 +#endif
  37         ret = -pthread_create(&thread_ctx->notime_thread_id,
  38                                 &thread_ctx->notime_pthread_attr,
  39                                 start_routine, arg);
  40
  41 +#ifdef HAVE_PTHREAD_SETAFFINITY
  42 +       pthread_setaffinity_np(&thread_ctx->notime_thread_id, cpusize, cpus);
  43 +#endif
  44 +
  45         CPU_FREE(cpus);
  46         return ret;
  47  }