linux-gen: ishm: make huge page cache size dynamic

Signed-off-by: Josep Puigdemont <josep.puigdemont@linaro.org>
Reviewed-and-tested-by: Matias Elo <matias.elo@nokia.com>
Signed-off-by: Maxim Uvarov <maxim.uvarov@linaro.org>

1 files changed, 11 insertions, 5 deletions

diff --git a/config/odp-linux-generic.conf b/config/odp-linux-generic.conf
index 0dd2a6c13..bddc92dd4 100644
--- a/config/odp-linux-generic.conf
+++ b/config/odp-linux-generic.conf
@@ -18,14 +18,20 @@
 odp_implementation = "linux-generic"
 config_file_version = "0.0.1"
 
-# Internal shared memory allocator
+# Shared memory options
 shm: {
-	# ODP will try to reserve as many huge pages as the number indicated
-	# here, up to 64. A zero value means that no pages should be reserved.
+	# Number of cached default size huge pages. These pages are allocated
+	# during odp_init_global() and freed back to the kernel in
+	# odp_term_global(). A value of zero means no pages are cached.
+	# No negative values should be used here, they are reserved for future
+	# implementations.
+	#
+	# ODP will reserve as many huge pages as possible, which may be less
+	# than requested here if the system does not have enough huge pages
+	# available.
+	#
 	# When using process mode threads, this value should be set to 0
 	# because the current implementation won't work properly otherwise.
-	# These pages will only be freed when the application calls
-	# odp_term_global().
 	num_cached_hp = 0
 }