mirror of
https://git.in.rschanz.org/ryan77627/guix.git
synced 2024-12-27 23:02:16 -05:00
61 lines
2.8 KiB
Diff
61 lines
2.8 KiB
Diff
|
https://sources.debian.org/data/main/a/abseil/0~20200923.3-2/debian/patches/cpu-frequency.diff
|
|||
|
|
This patch is taken from Debian instead of the upstream URL because the
|
|||
|
|
upstream URL contains far more changes than occur in this patch.
|
|||
|
|
|
|||
|
|
It was then modified to also work for armhf.
|
|||
|
|
|
|||
|
|
From: Benjamin Barenblat <bbaren@google.com>
|
|||
|
|
Subject: Ignore missing CPU frequency on more architectures
|
|||
|
|
Forwarded: yes
|
|||
|
|
Applied-Upstream: https://github.com/abseil/abseil-cpp/commit/1918ad2ae38aa32c74b558b322479a8efdd76363
|
|||
|
|
|
|||
|
|
Linux on MIPS, PA-RISC, RISC-V, and SystemZ doesn’t expose the nominal CPU
|
|||
|
|
frequency via /sys, so don’t worry if `NominalCPUFrequency` returns 1.0 on those
|
|||
|
|
platforms.
|
|||
|
|
|
|||
|
|
Some POWER machines expose the CPU frequency; others do not. Since we can’t
|
|||
|
|
predict which type of machine the tests will run on, simply disable testing for
|
|||
|
|
`NominalCPUFrequency` on POWER.
|
|||
|
|
|
|||
|
|
The author works at Google. Upstream applied this patch as Piper revision
|
|||
|
|
347079873 and exported it to GitHub; the Applied-Upstream URL above points to
|
|||
|
|
the exported commit.
|
|||
|
|
|
|||
|
|
--- a/absl/base/internal/sysinfo_test.cc
|
|||
|
|
+++ b/absl/base/internal/sysinfo_test.cc
|
|||
|
|
@@ -37,17 +37,28 @@ TEST(SysinfoTest, NumCPUs) {
|
|||
|
|
<< "NumCPUs() should not have the default value of 0";
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
+// Ensure that NominalCPUFrequency returns a reasonable value, or 1.00 on
|
|||
|
|
+// platforms where the CPU frequency is not available through sysfs.
|
|||
|
|
+//
|
|||
|
|
+// POWER is particularly problematic here; some Linux kernels expose the CPU
|
|||
|
|
+// frequency, while others do not. Since we can't predict a priori what a given
|
|||
|
|
+// machine is going to do, just disable this test on POWER on Linux.
|
|||
|
|
+#if !(defined(__linux) && (defined(__ppc64__) || defined(__PPC64__)))
|
|||
|
|
TEST(SysinfoTest, NominalCPUFrequency) {
|
|||
|
|
-#if !(defined(__aarch64__) && defined(__linux__)) && !defined(__EMSCRIPTEN__)
|
|||
|
|
- EXPECT_GE(NominalCPUFrequency(), 1000.0)
|
|||
|
|
- << "NominalCPUFrequency() did not return a reasonable value";
|
|||
|
|
-#else
|
|||
|
|
- // Aarch64 cannot read the CPU frequency from sysfs, so we get back 1.0.
|
|||
|
|
- // Emscripten does not have a sysfs to read from at all.
|
|||
|
|
+ // Linux only exposes the CPU frequency on certain architectures, and
|
|||
|
|
+ // Emscripten doesn't expose it at all.
|
|||
|
|
+#if defined(__linux__) && \
|
|||
|
|
+ (defined(__aarch64__) || defined(__hppa__) || defined(__mips__) || \
|
|||
|
|
+ defined(__arm__) || defined(__riscv) || defined(__s390x__)) || \
|
|||
|
|
+ defined(__EMSCRIPTEN__)
|
|||
|
|
EXPECT_EQ(NominalCPUFrequency(), 1.0)
|
|||
|
|
<< "CPU frequency detection was fixed! Please update unittest.";
|
|||
|
|
+#else
|
|||
|
|
+ EXPECT_GE(NominalCPUFrequency(), 1000.0)
|
|||
|
|
+ << "NominalCPUFrequency() did not return a reasonable value";
|
|||
|
|
#endif
|
|||
|
|
}
|
|||
|
|
+#endif
|
|||
|
|
|
|||
|
|
TEST(SysinfoTest, GetTID) {
|
|||
|
|
EXPECT_EQ(GetTID(), GetTID()); // Basic compile and equality test.
|