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Merge branch 'topic/livepatch' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux into for-4.7/livepatching-ppc64le

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Pull livepatching support for ppc64 architecture from Michael Ellerman.

Signed-off-by: Jiri Kosina <jkosina@suse.cz>
This commit is contained in:
Jiri Kosina
2016-04-15 11:31:51 +02:00
parent 61bf12d330 85baa09549
commit 4d4fb97a62
25 changed files with 783 additions and 145 deletions
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14
kernel/trace/ftrace.c
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@@ -1533,7 +1533,19 @@ static int ftrace_cmp_recs(const void *a, const void *b)
return 0;
}
static unsigned long ftrace_location_range(unsigned long start, unsigned long end)
/**
* ftrace_location_range - return the first address of a traced location
* if it touches the given ip range
* @start: start of range to search.
* @end: end of range to search (inclusive). @end points to the last byte
* to check.
*
* Returns rec->ip if the related ftrace location is a least partly within
* the given address range. That is, the first address of the instruction
* that is either a NOP or call to the function tracer. It checks the ftrace
* internal tables to determine if the address belongs or not.
*/
unsigned long ftrace_location_range(unsigned long start, unsigned long end)
{
struct ftrace_page *pg;
struct dyn_ftrace *rec;