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Add patches to unbreak perf and bcc.

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The first patch re-adds symbol definitions that were temporarily omitted
from the 4.19 stable branch.

The latter patch corrects the uapi swab.h to that errors about "unknown
type name '__always_inline'" are no longer present in builds.  Without
this patch, bcc would build but attempts to compile the internal
programs at runtime would fail.

Signed-off-by: Krister Johansen <krister.johansen@oracle.com>
This commit is contained in:
Krister Johansen 2019-11-13 17:46:15 -08:00
parent d47bf4bb3e
commit 59481bd5d3
2 changed files with 107 additions and 0 deletions
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52
kernel/patches-4.19.x/0001-perf-symbols-Add-fallback-definitions-for-GELF_ST_VI.patch Normal file
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@ -0,0 +1,52 @@
From c3770da814783f82f86d36673fd19e4ebde6bf54 Mon Sep 17 00:00:00 2001
From: Arnaldo Carvalho de Melo <acme@redhat.com>
Date: Mon, 4 Feb 2019 15:48:03 -0300
Subject: [PATCH 1/2] perf symbols: Add fallback definitions for
GELF_ST_VISIBILITY()
Those aren't present in Alpine Linux 3.4 to edge, so provide fallback
defines to get the next patch building there keeping the build
bisectable.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Nick Clifton <nickc@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lkml.kernel.org/n/tip-03cg3gya2ju4ba2x6ibb9fuz@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
tools/perf/util/symbol-elf.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/tools/perf/util/symbol-elf.c b/tools/perf/util/symbol-elf.c
index a701a8a48f00..dc3fbcbb0e79 100644
--- a/tools/perf/util/symbol-elf.c
+++ b/tools/perf/util/symbol-elf.c
@@ -19,6 +19,20 @@
#define EM_AARCH64 183 /* ARM 64 bit */
#endif
+#ifndef ELF32_ST_VISIBILITY
+#define ELF32_ST_VISIBILITY(o) ((o) & 0x03)
+#endif
+
+/* For ELF64 the definitions are the same. */
+#ifndef ELF64_ST_VISIBILITY
+#define ELF64_ST_VISIBILITY(o) ELF32_ST_VISIBILITY (o)
+#endif
+
+/* How to extract information held in the st_other field. */
+#ifndef GELF_ST_VISIBILITY
+#define GELF_ST_VISIBILITY(val) ELF64_ST_VISIBILITY (val)
+#endif
+
typedef Elf64_Nhdr GElf_Nhdr;
#ifdef HAVE_CPLUS_DEMANGLE_SUPPORT
--
2.24.0

55
kernel/patches-4.19.x/0002-include-uapi-linux-swab-Fix-potentially-missing-__al.patch Normal file
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@ -0,0 +1,55 @@
From 01d3d9d51e7036eb0f83cfc874b5d6daf18a146f Mon Sep 17 00:00:00 2001
From: Matt Redfearn <matt.redfearn@mips.com>
Date: Wed, 3 Jan 2018 09:57:30 +0000
Subject: [PATCH 2/2] include/uapi/linux/swab: Fix potentially missing
__always_inline
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Commit bc27fb68aaad ("include/uapi/linux/byteorder, swab: force inlining
of some byteswap operations") added __always_inline to swab functions
and commit 283d75737837 ("uapi/linux/stddef.h: Provide __always_inline to
userspace headers") added a definition of __always_inline for use in
exported headers when the kernel's compiler.h is not available.
However, since swab.h does not include stddef.h, if the header soup does
not indirectly include it, the definition of __always_inline is missing,
resulting in a compilation failure, which was observed compiling the
perf tool using exported headers containing this commit:
In file included from /usr/include/linux/byteorder/little_endian.h:12:0,
from /usr/include/asm/byteorder.h:14,
from tools/include/uapi/linux/perf_event.h:20,
from perf.h:8,
from builtin-bench.c:18:
/usr/include/linux/swab.h:160:8: error: unknown type name ‘__always_inline’
static __always_inline __u16 __swab16p(const __u16 *p)
Fix this by replacing the inclusion of linux/compiler.h with
linux/stddef.h to ensure that we pick up that definition if required,
without relying on it's indirect inclusion. compiler.h is then included
indirectly, via stddef.h.
Fixes: 283d75737837 ("uapi/linux/stddef.h: Provide __always_inline to userspace headers")
Signed-off-by: Matt Redfearn <matt.redfearn@mips.com>
---
include/uapi/linux/swab.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/include/uapi/linux/swab.h b/include/uapi/linux/swab.h
index 23cd84868cc3..f6a8cf737abf 100644
--- a/include/uapi/linux/swab.h
+++ b/include/uapi/linux/swab.h
@@ -3,7 +3,7 @@
#define _UAPI_LINUX_SWAB_H
#include <linux/types.h>
-#include <linux/compiler.h>
+#include <linux/stddef.h>
#include <asm/swab.h>
/*
--
2.24.0