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| author | John Levon <levon@movementarian.org> | 2005-06-23 22:02:47 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-06-24 00:06:27 -0700 |
| commit | 0c0a400d1debb172c596b24ab82efab4975990a9 (patch) | |
| tree | 58bd3604e46151662268bd558dce49ac8e72cca0 /Documentation/basic_profiling.txt | |
| parent | 391cd727eac2e10be7685efd739a3ea9de87393c (diff) | |
| download | lwn-0c0a400d1debb172c596b24ab82efab4975990a9.tar.gz lwn-0c0a400d1debb172c596b24ab82efab4975990a9.zip | |
[PATCH] oprofile: report anonymous region samples
The below patch passes samples from anonymous regions to userspace instead
of just dropping them. This provides the support needed for reporting
anonymous-region code samples (today: basic accumulated results; later:
Java and other dynamically compiled code).
As this changes the format, an upgrade to the just-released 0.9 release of
the userspace tools is required.
This patch is based upon an earlier one by Will Cohen <wcohen@redhat.com>
Signed-off-by: John Levon <levon@movementarian.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'Documentation/basic_profiling.txt')
| -rw-r--r-- | Documentation/basic_profiling.txt | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/Documentation/basic_profiling.txt b/Documentation/basic_profiling.txt index 65e3dc2d4437..8764e9f70821 100644 --- a/Documentation/basic_profiling.txt +++ b/Documentation/basic_profiling.txt @@ -27,9 +27,13 @@ dump output readprofile -m /boot/System.map > captured_profile Oprofile -------- -Get the source (I use 0.8) from http://oprofile.sourceforge.net/ -and add "idle=poll" to the kernel command line + +Get the source (see Changes for required version) from +http://oprofile.sourceforge.net/ and add "idle=poll" to the kernel command +line. + Configure with CONFIG_PROFILING=y and CONFIG_OPROFILE=y & reboot on new kernel + ./configure --with-kernel-support make install @@ -46,7 +50,7 @@ start opcontrol --start stop opcontrol --stop dump output opreport > output_file -To only report on the kernel, run opreport /boot/vmlinux > output_file +To only report on the kernel, run opreport -l /boot/vmlinux > output_file A reset is needed to clear old statistics, which survive a reboot. |