package.bbclass: Take a shared lock when reading to improve do_package parallelism

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 4 insertions, 1 deletions

diff --git a/meta/classes/package.bbclass b/meta/classes/package.bbclass
index d39c694de5..8e7fa26f72 100644
--- a/meta/classes/package.bbclass
+++ b/meta/classes/package.bbclass
@@ -497,7 +497,8 @@ python emit_pkgdata() {
         pkgdest = bb.data.getVar('PKGDEST', d, 1)
         pkgdatadir = bb.data.getVar('PKGDESTWORK', d, True)
 
-        lf = bb.utils.lockfile(bb.data.expand("${PACKAGELOCK}", d))
+        # Take shared lock since we're only reading, not writing
+        lf = bb.utils.lockfile(bb.data.expand("${PACKAGELOCK}", d), True)
 
         data_file = pkgdatadir + bb.data.expand("/${PN}" , d)
         f = open(data_file, 'w')
@@ -649,6 +650,7 @@ python package_do_shlibs() {
         shlibs_dir = bb.data.getVar('SHLIBSDIR', d, True)
         shlibswork_dir = bb.data.getVar('SHLIBSWORKDIR', d, True)
 
+        # Take shared lock since we're only reading, not writing
         lf = bb.utils.lockfile(bb.data.expand("${PACKAGELOCK}", d))
 
         def linux_so(root, path, file):
@@ -878,6 +880,7 @@ python package_do_pkgconfig () {
                                                         if hdr == 'Requires':
                                                                 pkgconfig_needed[pkg] += exp.replace(',', ' ').split()
 
+        # Take shared lock since we're only reading, not writing
         lf = bb.utils.lockfile(bb.data.expand("${PACKAGELOCK}", d))
 
         for pkg in packages.split():