From: Aaron Conole <aconole@redhat.com>
To: dev@dpdk.org
Subject: [dpdk-dev] [RFC 06/23] eal-common: introduce a way to query cpu support
Date: Fri, 30 Dec 2016 10:26:03 -0500 [thread overview]
Message-ID: <1483111580-5397-7-git-send-email-aconole@redhat.com> (raw)
In-Reply-To: <1483111580-5397-1-git-send-email-aconole@redhat.com>
This adds a new API to check for the eal cpu versions.
Signed-off-by: Aaron Conole <aconole@redhat.com>
---
lib/librte_eal/common/eal_common_cpuflags.c | 13 +++++++++++--
lib/librte_eal/common/include/generic/rte_cpuflags.h | 9 +++++++++
2 files changed, 20 insertions(+), 2 deletions(-)
diff --git a/lib/librte_eal/common/eal_common_cpuflags.c b/lib/librte_eal/common/eal_common_cpuflags.c
index b5f76f7..2c2127b 100644
--- a/lib/librte_eal/common/eal_common_cpuflags.c
+++ b/lib/librte_eal/common/eal_common_cpuflags.c
@@ -43,6 +43,13 @@
void
rte_cpu_check_supported(void)
{
+ if (!rte_cpu_is_supported())
+ exit(1);
+}
+
+bool
+rte_cpu_is_supported(void)
+{
/* This is generated at compile-time by the build system */
static const enum rte_cpu_flag_t compile_time_flags[] = {
RTE_COMPILE_TIME_CPUFLAGS
@@ -57,14 +64,16 @@ rte_cpu_check_supported(void)
fprintf(stderr,
"ERROR: CPU feature flag lookup failed with error %d\n",
ret);
- exit(1);
+ return false;
}
if (!ret) {
fprintf(stderr,
"ERROR: This system does not support \"%s\".\n"
"Please check that RTE_MACHINE is set correctly.\n",
rte_cpu_get_flag_name(compile_time_flags[i]));
- exit(1);
+ return false;
}
}
+
+ return true;
}
diff --git a/lib/librte_eal/common/include/generic/rte_cpuflags.h b/lib/librte_eal/common/include/generic/rte_cpuflags.h
index 71321f3..e4342ad 100644
--- a/lib/librte_eal/common/include/generic/rte_cpuflags.h
+++ b/lib/librte_eal/common/include/generic/rte_cpuflags.h
@@ -40,6 +40,7 @@
*/
#include <errno.h>
+#include <stdbool.h>
/**
* Enumeration of all CPU features supported
@@ -82,4 +83,12 @@ rte_cpu_get_flag_enabled(enum rte_cpu_flag_t feature);
void
rte_cpu_check_supported(void);
+/**
+ * This function checks that the currently used CPU supports the CPU features
+ * that were specified at compile time. It is called automatically within the
+ * EAL, so does not need to be used by applications. This version returns a
+ * result so that decisions may be made (for instance, graceful shutdowns).
+ */
+bool
+rte_cpu_is_supported(void);
#endif /* _RTE_CPUFLAGS_H_ */
--
2.7.4
next prev parent reply other threads:[~2016-12-30 15:26 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-30 15:25 [dpdk-dev] [RFC 00/23] Refactor eal_init to remove panic() calls Aaron Conole
2016-12-30 15:25 ` [dpdk-dev] [RFC 01/23] eal: CPU init will no longer panic Aaron Conole
2016-12-30 15:25 ` [dpdk-dev] [RFC 02/23] eal: return error instead of panic for cpu init Aaron Conole
2016-12-30 15:26 ` [dpdk-dev] [RFC 03/23] eal: No panic on hugepages info init Aaron Conole
2016-12-30 15:26 ` [dpdk-dev] [RFC 04/23] eal: do not panic on failed hugepage query Aaron Conole
2016-12-30 15:26 ` [dpdk-dev] [RFC 05/23] eal: failure to parse args returns error Aaron Conole
2016-12-30 15:26 ` Aaron Conole [this message]
2016-12-30 15:26 ` [dpdk-dev] [RFC 07/23] eal: Signal error when CPU isn't supported Aaron Conole
2016-12-30 15:26 ` [dpdk-dev] [RFC 08/23] eal: do not panic on memzone initialization fails Aaron Conole
2016-12-30 15:26 ` [dpdk-dev] [RFC 09/23] eal: set errno when exiting for already called Aaron Conole
2016-12-30 15:26 ` [dpdk-dev] [RFC 10/23] eal: Do not panic on log failures Aaron Conole
2016-12-30 15:26 ` [dpdk-dev] [RFC 11/23] eal: Do not panic on pci-probe Aaron Conole
2016-12-30 15:26 ` [dpdk-dev] [RFC 12/23] eal: do not panic on vfio failure Aaron Conole
2016-12-30 15:26 ` [dpdk-dev] [RFC 13/23] eal: do not panic on memory init Aaron Conole
2016-12-30 15:26 ` [dpdk-dev] [RFC 14/23] eal: do not panic on tailq init Aaron Conole
2016-12-30 15:26 ` [dpdk-dev] [RFC 15/23] eal: do not panic on alarm init Aaron Conole
2016-12-30 15:26 ` [dpdk-dev] [RFC 16/23] eal: convert timer_init not to call panic Aaron Conole
2016-12-30 15:26 ` [dpdk-dev] [RFC 17/23] eal: change the private pipe call to reflect errno Aaron Conole
2016-12-30 15:26 ` [dpdk-dev] [RFC 18/23] eal: Do not panic on interrupt thread init Aaron Conole
2016-12-30 15:26 ` [dpdk-dev] [RFC 19/23] eal: do not error if plugins fail to init Aaron Conole
2016-12-30 15:26 ` [dpdk-dev] [RFC 20/23] eal_pci: Continue probing even on failures Aaron Conole
2016-12-30 15:26 ` [dpdk-dev] [RFC 21/23] eal: do not panic on failed PCI probe Aaron Conole
2016-12-30 15:26 ` [dpdk-dev] [RFC 22/23] eal_common_dev: continue initializing vdevs Aaron Conole
2016-12-30 15:26 ` [dpdk-dev] [RFC 23/23] eal: do not panic (or abort) if vdev init fails Aaron Conole
2017-01-02 14:22 ` [dpdk-dev] [RFC 00/23] Refactor eal_init to remove panic() calls Thomas Monjalon
2017-01-03 16:06 ` Aaron Conole
2017-01-25 21:33 ` Aaron Conole
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