Re: [Xen-devel] [PATCH for-4.10] docs: update coverage.markdown
On 20/10/17 18:08, Roger Pau Monné wrote: On Fri, Oct 20, 2017 at 05:30:41PM +0100, Wei Liu wrote: The coverage support in hypervisor is redone. Update the document. Signed-off-by: Wei Liu Adding Julien, although I'm not sure if doc changes also need a release-ack. Reviewed-by: Roger Pau Monné I would forgo it for documentation. Such patches can only make release the better :). Cheers, Thanks! ___ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel -- Julien Grall ___ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
Re: [Xen-devel] [PATCH for-4.10] docs: update coverage.markdown
On Fri, Oct 20, 2017 at 05:30:41PM +0100, Wei Liu wrote: > The coverage support in hypervisor is redone. Update the document. > > Signed-off-by: Wei Liu Adding Julien, although I'm not sure if doc changes also need a release-ack. Reviewed-by: Roger Pau Monné Thanks! ___ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
Re: [Xen-devel] [PATCH for-4.10] docs: update coverage.markdown
Wei Liu writes ("[PATCH for-4.10] docs: update coverage.markdown"):
> The coverage support in hypervisor is redone. Update the document.
Acked-by: Ian Jackson
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[Xen-devel] [PATCH for-4.10] docs: update coverage.markdown
The coverage support in hypervisor is redone. Update the document. Signed-off-by: Wei Liu --- Cc: Andrew Cooper Cc: George Dunlap Cc: Ian Jackson Cc: Jan Beulich Cc: Konrad Rzeszutek Wilk Cc: Stefano Stabellini Cc: Tim Deegan Cc: Wei Liu Cc: roger@citrix.com --- docs/misc/coverage.markdown | 30 +- 1 file changed, 9 insertions(+), 21 deletions(-) diff --git a/docs/misc/coverage.markdown b/docs/misc/coverage.markdown index 9a88c899b8..6eae44176c 100644 --- a/docs/misc/coverage.markdown +++ b/docs/misc/coverage.markdown @@ -10,38 +10,26 @@ down your hypervisor. ## Enable coverage -Test coverage support can be turned on compiling Xen with the `coverage` option set -to `y`. +Test coverage support can be turned on compiling Xen with the `CONFIG_GCOV` +option set to `y`. -Something like: - -cd xen -make coverage=y - -(or change your `.config` file). +Change your `.config` or run `make -C xen menuconfig`. ## Extract coverage data -The way GCC and other tools deal with coverage information is to use some files -created during build phase (.gcno) and some files produced by executing the -*program* (.gcda). The program in this case is Xen but Xen cannot write files -so the way you can use coverage from Xen is extract coverage data from Xen and -then split these information into files. - -To extract data you use a simple utility called `xencov`. Mainly `xencore` -allows you to do 3 operations: +To extract data you use a simple utility called `xencov`. +It allows you to do 2 operations: * `xencov read` extract data * `xencov reset` reset all coverage counters -* `xencov read-reset` extract data and reset counters at the same time. -Another utility (`xencov_split`) is used to split extracted data file into files -needed by userspace tools. +Another utility (`xencov_split`) is used to split extracted data file into +files needed by userspace tools. ## Split coverage data -Once you extracted data from Xen, it is time to create files which the coverage tools -can understand. To do it you need to run `xencov_split` utility. +Once you extracted data from Xen, it is time to create files which the coverage +tools can understand. To do it you need to run `xencov_split` utility. The utility just takes an input file and splits the blob into gcc .gcda files in the same directory that you execute the script. As file names are generated -- 2.11.0 ___ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
