[Bug 555130] [NEW] perf doesn't work on -pae-kernels [patch proposal]

[Ulrik Mikaelsson]

Public bug reported:

Binary package hint: linux-tools-common

linux-tools-common contains a small redirection-script (/usr/bin/perf),
for dispatching to the perf-version corresponding to the running kernel.

This script uses basically ${`uname -r`%-*} to figure the running kernel
version, where %-* strips the last dash-delimited component of the
kernel name. This breaks for -generic-pae.

Examples of uname "-r":
2.6.32-19-generic  # Works today
2.6.32-19-generic-pae  # Breaks, since the TWO last components needs to be stripped.

A proposed solution could be to instead use "%%-[a-z-]*", which would
remove ALL trailing letters, and dashes, up to the last digit in the
string (the package-release-number).

However, since I don't know kernel-release names for other
architectures, it needs to be verified first.

Suggested new perf, change only on line 3
----------------
#!/bin/bash
version=`uname -r`
version=${version%%-[a-z-]*}
exec "perf_$version" "$@"

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New

-- 
perf doesn't work on -pae-kernels [patch proposal]
https://bugs.launchpad.net/bugs/555130
You received this bug notification because you are a member of Kernel
Bugs, which is subscribed to linux in ubuntu.