[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
bug#31226: [PATCH] gnu: Add libpfm4.
From: |
Ludovic Courtès |
Subject: |
bug#31226: [PATCH] gnu: Add libpfm4. |
Date: |
Thu, 26 Apr 2018 15:29:26 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.3 (gnu/linux) |
Rouby Pierre-Antoine <address@hidden> skribis:
> * gnu/packageslinux.scm (libpfm4): New variable.
Applied with the following changes based on their README.
Thank you!
Ludo’.
diff --git a/gnu/packages/linux.scm b/gnu/packages/linux.scm
index b6d00c853..4d2446317 100644
--- a/gnu/packages/linux.scm
+++ b/gnu/packages/linux.scm
@@ -4712,12 +4712,18 @@ high-speed networking devices.")
(string-append "PREFIX=" out)
"install")
#t))))))
- (synopsis "Performance events monitoring library for Linux perf_events")
+ (synopsis "Performance event monitoring library")
(description
- "This package is a user library called libpfm4 to help setup performance
-events for use with the perf_events Linux kernel interface.
+ "This package provides a library called libpfm4, which is used to develop
+monitoring tools exploiting the performance monitoring events such as those
+provided by the Performance Monitoring Unit (PMU) of modern processors.
-This is a complete rewrite of libpfm3 and it is NOT backward compatible
-with it.")
+Libpfm4 helps convert from an event name, expressed as a string, to the event
+encoding that is either the raw event as documented by the hardware vendor or
+the OS-specific encoding. In the latter case, the library is able to prepare
+the OS-specific data structures needed by the kernel to setup the event.
+
+libpfm4 provides support for the @code{perf_events} interface, which was
+introduced in Linux 2.6.31.")
(home-page "http://perfmon2.sourceforge.net/")
(license license:expat)))