systemtap/rhbz1972828.patch

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commit 515a6a2d63cdf16c5bc599f0d29283289219d9a4
Author: Frank Ch. Eigler <fche@redhat.com>
Date: Thu Jun 24 13:30:38 2021 -0400
rhbz1972828: tapsets: iommu tracepoints
Disable detection of intel-iommu tracepoint family on non-x86
platforms, because the 5.13ish kernel headers for this tracepoint
include references to functions like clcache_flush_range which don't
exist on all non-x86.
diff --git a/tapsets.cxx b/tapsets.cxx
index a5e41129f..20e0cb68f 100644
--- a/tapsets.cxx
+++ b/tapsets.cxx
@@ -11930,6 +11930,13 @@ static vector<string> tracepoint_extra_decls (systemtap_session& s,
they_live.push_back ("#include <linux/phy.h>");
}
+ if (header.find("intel_iommu") != string::npos && s.architecture != "x86_64" && s.architecture != "i386")
+ {
+ // need asm/cacheflush.h for clflush_cache_range() used in that header,
+ // but this function does not exist on e.g. ppc
+ they_live.push_back ("#error nope");
+ }
+
if (header.find("wbt") != string::npos)
{
// blk-wbt.h gets included as "../../../block/blk-wbt.h", so we