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Commit 7e4c1498 authored by Chris Ryder's avatar Chris Ryder Committed by Arnaldo Carvalho de Melo
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perf annotate: Sort list of recognised instructions 



Currently the list of instructions recognised by perf annotate has to be
explicitly written in sorted order. This makes it easy to make mistakes
when adding new instructions. Sort the list of instructions on first
access.

Signed-off-by: default avatarChris Ryder <chris.ryder@arm.com>
Acked-by: default avatarPawel Moll <pawel.moll@arm.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Will Deacon <will.deacon@arm.com>
Link: http://lkml.kernel.org/r/4268febaf32f47f322c166fb2fe98cfec7041e11.1463676839.git.chris.ryder@arm.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 58c04001

tools/perf/util/annotate.c

+23 −5
Original line number Diff line number Diff line
@@ -354,9 +354,6 @@ static struct ins_ops nop_ops = { 
	.scnprintf = nop__scnprintf,

};



/*

 * Must be sorted by name!

 */

static struct ins instructions[] = {

	{ .name = "add",   .ops  = &mov_ops, },

	{ .name = "addl",  .ops  = &mov_ops, },
@@ -449,18 +446,39 @@ static struct ins instructions[] = { 
	{ .name = "xbeginq", .ops  = &jump_ops, },

};



static int ins__cmp(const void *name, const void *insp)

static int ins__key_cmp(const void *name, const void *insp)

{

	const struct ins *ins = insp;



	return strcmp(name, ins->name);

}



static int ins__cmp(const void *a, const void *b)

{

	const struct ins *ia = a;

	const struct ins *ib = b;



	return strcmp(ia->name, ib->name);

}



static void ins__sort(void)

{

	const int nmemb = ARRAY_SIZE(instructions);



	qsort(instructions, nmemb, sizeof(struct ins), ins__cmp);

}



static struct ins *ins__find(const char *name)

{

	const int nmemb = ARRAY_SIZE(instructions);

	static bool sorted;



	if (!sorted) {

		ins__sort();

		sorted = true;

	}



	return bsearch(name, instructions, nmemb, sizeof(struct ins), ins__cmp);

	return bsearch(name, instructions, nmemb, sizeof(struct ins), ins__key_cmp);

}



int symbol__annotate_init(struct map *map __maybe_unused, struct symbol *sym)