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mirror of https://git.yoctoproject.org/poky synced 2026-05-07 16:59:22 +00:00

lttng-ust:upgrade 2.10.3 -> 2.10.4

-Upgrade from lttng-ust_2.10.3.bb to lttng-ust_2.10.4.bb.

-lttng-ust/0001-compat-work-around-broken-_SC_NPROCESSORS_CONF-on-MU.patch
 Removed since this is included in 2.10.4

(From OE-Core rev: dc25e9525495e00940da7716cbba6bca96423acd)

Signed-off-by: Zang Ruochen <zangrc.fnst@cn.fujitsu.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Zang Ruochen
2019-06-19 15:14:40 +08:00
committed by Richard Purdie
parent ca0eeb5c36
commit 1c7546e372
2 changed files with 2 additions and 112 deletions
@@ -1,109 +0,0 @@
From 5de7c318804a7b1edce8562d4891b4c74aac0677 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.
Upstream-Status: Accepted [1] [5de7c318804a7b1edce8562d4891b4c74aac0677]
[1] https://lists.lttng.org/pipermail/lttng-dev/2019-March/028616.html
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@efficios.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 @@
int __num_possible_cpus;
+#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 = result;
}
+
+#else
+
+/*
+ * The MUSL libc implementation of the _SC_NPROCESSORS_CONF sysconf does 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 from
+ * 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 = 0;
+ DIR *cpudir;
+ struct dirent *entry;
+
+ cpudir = opendir("/sys/devices/system/cpu");
+ if (cpudir == NULL)
+ goto end;
+
+ /*
+ * Count the number of directories named "cpu" followed by and
+ * integer. This is the same strategy as glibc uses.
+ */
+ while ((entry = readdir(cpudir))) {
+ if (entry->d_type == DT_DIR &&
+ strncmp(entry->d_name, "cpu", 3) == 0) {
+
+ char *endptr;
+ unsigned long cpu_num;
+
+ cpu_num = strtoul(entry->d_name + 3, &endptr, 10);
+ if ((cpu_num < ULONG_MAX) && (endptr != entry->d_name + 3)
+ && (*endptr == '\0')) {
+ count++;
+ }
+ }
+ }
+
+end:
+ /*
+ * Get the sysconf value as a fallback. Keep the highest number.
+ */
+ result = __max(sysconf(_SC_NPROCESSORS_CONF), count);
+
+ /*
+ * If both methods failed, don't store the value.
+ */
+ if (result < 1)
+ return;
+ __num_possible_cpus = result;
+}
+#endif
--
2.17.1
@@ -27,11 +27,10 @@ PE = "2"
SRC_URI = "https://lttng.org/files/lttng-ust/lttng-ust-${PV}.tar.bz2 \
file://lttng-ust-doc-examples-disable.patch \
file://0001-compat-work-around-broken-_SC_NPROCESSORS_CONF-on-MU.patch \
"
SRC_URI[md5sum] = "ffcfa8c1ba9a52f002d240e936e9afa2"
SRC_URI[sha256sum] = "9e8420f90d5f963f7aa32bc6d44adc1e491136f687c69ffb7a3075d33b40852b"
SRC_URI[md5sum] = "19916ff0dec23c90f985586a8cbd1fd2"
SRC_URI[sha256sum] = "75d5b4bb205c444a343e1297e14cd3a2503fc645a26710531cbd319c72c1a967"
CVE_PRODUCT = "ust"