From: Michael Jeanson <mjeanson@efficios.com>
To: alpine-aports@lists.alpinelinux.org
Cc: Michael Jeanson <mjeanson@efficios.com>
Subject: [alpine-aports] [PATCH v2] main/lttng-ust: upgrade to 2.10.3
Date: Wed, 20 Mar 2019 11:34:43 -0500
Message-Id: <20190320163443.19099-1-mjeanson@efficios.com>
Precedence: list
MIME-Version: 1.0
Content-Transfer-Encoding: quoted-printable

---
 ...c5baf1565ba1daa2b96f5e4a297571c505b4.patch | 103 ++++++++++++++++++
 main/lttng-ust/APKBUILD                       |  10 +-
 2 files changed, 109 insertions(+), 4 deletions(-)
 create mode 100644 main/lttng-ust/13d2c5baf1565ba1daa2b96f5e4a297571c505=
b4.patch

diff --git a/main/lttng-ust/13d2c5baf1565ba1daa2b96f5e4a297571c505b4.patc=
h b/main/lttng-ust/13d2c5baf1565ba1daa2b96f5e4a297571c505b4.patch
new file mode 100644
index 0000000000..6d770e30f8
--- /dev/null
+++ b/main/lttng-ust/13d2c5baf1565ba1daa2b96f5e4a297571c505b4.patch
@@ -0,0 +1,103 @@
+From 13d2c5baf1565ba1daa2b96f5e4a297571c505b4 Mon Sep 17 00:00:00 2001
+From: Michael Jeanson <mjeanson@efficios.com>
+Date: Wed, 20 Mar 2019 11:07:35 -0400
+Subject: [PATCH] compat: work around broken _SC_NPROCESSORS_CONF on MUSL=
 libc
+
+On MUSL libc the _SC_NPROCESSORS_CONF sysconf will report the number of
+CPUs allocated to the task based on the affinity mask instead of the
+total number of CPUs configured on the system.
+
+Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
+Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
+---
+ libringbuffer/smp.c | 66 +++++++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 66 insertions(+)
+
+diff --git a/libringbuffer/smp.c b/libringbuffer/smp.c
+index 9e7114be..656a75da 100644
+--- a/libringbuffer/smp.c
++++ b/libringbuffer/smp.c
+@@ -2,6 +2,7 @@
+  * libringbuffer/smp.c
+  *
+  * Copyright (C) 2011-2012 Mathieu Desnoyers <mathieu.desnoyers@efficio=
s.com>
++ * Copyright (C) 2019 Michael Jeanson <mjeanson@efficios.com>
+  *
+  * This library is free software; you can redistribute it and/or
+  * modify it under the terms of the GNU Lesser General Public
+@@ -26,6 +27,7 @@
+=20
+ int __num_possible_cpus;
+=20
++#if (defined(__GLIBC__) || defined( __UCLIBC__))
+ void _get_num_possible_cpus(void)
+ {
+ 	int result;
+@@ -43,3 +45,67 @@ void _get_num_possible_cpus(void)
+ 		return;
+ 	__num_possible_cpus =3D result;
+ }
++
++#else
++
++/*
++ * The MUSL libc implementation of the _SC_NPROCESSORS_CONF sysconf doe=
s not
++ * return the number of configured CPUs in the system but relies on the=
 cpu
++ * affinity mask of the current task.
++ *
++ * So instead we use a strategy similar to GLIBC's, counting the cpu
++ * directories in "/sys/devices/system/cpu" and fallback on the value f=
rom
++ * sysconf if it fails.
++ */
++
++#include <dirent.h>
++#include <limits.h>
++#include <stdlib.h>
++#include <string.h>
++#include <sys/types.h>
++
++#define __max(a,b) ((a)>(b)?(a):(b))
++
++void _get_num_possible_cpus(void)
++{
++	int result, count =3D 0;
++	DIR *cpudir;
++	struct dirent *entry;
++
++	cpudir =3D opendir("/sys/devices/system/cpu");
++	if (cpudir =3D=3D NULL)
++		goto end;
++
++	/*
++	 * Count the number of directories named "cpu" followed by and
++	 * integer. This is the same strategy as glibc uses.
++	 */
++	while ((entry =3D readdir(cpudir))) {
++		if (entry->d_type =3D=3D DT_DIR &&
++			strncmp(entry->d_name, "cpu", 3) =3D=3D 0) {
++
++			char *endptr;
++			unsigned long cpu_num;
++
++			cpu_num =3D strtoul(entry->d_name + 3, &endptr, 10);
++			if ((cpu_num < ULONG_MAX) && (endptr !=3D entry->d_name + 3)
++					&& (*endptr =3D=3D '\0')) {
++				count++;
++			}
++		}
++	}
++
++end:
++	/*
++	 * Get the sysconf value as a fallback. Keep the highest number.
++	 */
++	result =3D __max(sysconf(_SC_NPROCESSORS_CONF), count);
++
++	/*
++	 * If both methods failed, don't store the value.
++	 */
++	if (result < 1)
++		return;
++	__num_possible_cpus =3D result;
++}
++#endif
diff --git a/main/lttng-ust/APKBUILD b/main/lttng-ust/APKBUILD
index d78437b316..1c37424c6a 100644
--- a/main/lttng-ust/APKBUILD
+++ b/main/lttng-ust/APKBUILD
@@ -1,16 +1,17 @@
 # Contributor: Michael Jeanson <mjeanson@efficios.com>
 # Maintainer: Michael Jeanson <mjeanson@efficios.com>
 pkgname=3Dlttng-ust
-pkgver=3D2.10.1
+pkgver=3D2.10.3
 pkgrel=3D0
 pkgdesc=3D"LTTng 2.0 Userspace Tracer"
 url=3D"https://lttng.org"
 arch=3D"all"
-license=3D"LGPL-2.0-or-later"
+license=3D"LGPL-2.1-or-later"
 makedepends=3D"userspace-rcu-dev>0.10 util-linux-dev linux-headers bash"
 install=3D""
 subpackages=3D"$pkgname-doc $pkgname-dev"
-source=3D"https://lttng.org/files/$pkgname/$pkgname-$pkgver.tar.bz2"
+source=3D"https://lttng.org/files/$pkgname/$pkgname-$pkgver.tar.bz2
+	13d2c5baf1565ba1daa2b96f5e4a297571c505b4.patch"
=20
 builddir=3D"$srcdir"/$pkgname-$pkgver
=20
@@ -34,4 +35,5 @@ package() {
 	make DESTDIR=3D"$pkgdir" install
 }
=20
-sha512sums=3D"bd9b75ff359a8698ba4f7b6a27d9958c8bd9539fd43d8f1bc4bb400032=
71c9074f1bb4176d074bac290fad1636d5a3226063275006b781f3533567dea71fac96  l=
ttng-ust-2.10.1.tar.bz2"
+sha512sums=3D"6f646de3a12dbad096014f3069c3e702fb54b824b78770e777f6f877c7=
6ffc48fae863b10c432bff1bba29caafdb5b76cb2b9cb88eb7340d5121300d2c0ff65d  l=
ttng-ust-2.10.3.tar.bz2
+c91ea6ad2085f13de0508d0f238582bcd12f0460cb00f482a85fa5cfe8ec4ce675c084af=
27387f63cec9cc83430ca80fb995b289f44b515888efb796a97dc320  13d2c5baf1565ba=
1daa2b96f5e4a297571c505b4.patch"
--=20
2.21.0



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