perf_counter: Fix the PARISC build

Ingo Molnar · Ingo Molnar · commit f738eb1b63ed · 2009-08-18T11:34:13.000+02:00
PARISC does not build:

/home/mingo/tip/kernel/perf_counter.c: In function 'perf_counter_index':
/home/mingo/tip/kernel/perf_counter.c:2016: error: 'PERF_COUNTER_INDEX_OFFSET' undeclared (first use in this function)
/home/mingo/tip/kernel/perf_counter.c:2016: error: (Each undeclared identifier is reported only once
/home/mingo/tip/kernel/perf_counter.c:2016: error: for each function it appears in.)

As PERF_COUNTER_INDEX_OFFSET is not defined.

Now, we could define it in the architecture - but lets also provide
a core default of 0 (which happens to be what all but one
architecture uses at the moment).

Architectures that need a different index offset should set this
value in their asm/perf_counter.h files.

Cc: Kyle McMartin &lt;kyle@mcmartin.ca&gt;
Cc: Helge Deller &lt;deller@gmx.de&gt;
Cc: linux-parisc@vger.kernel.org
Cc: Peter Zijlstra &lt;a.p.zijlstra@chello.nl&gt;
Cc: Mike Galbraith &lt;efault@gmx.de&gt;
Cc: Paul Mackerras &lt;paulus@samba.org&gt;
Cc: Arnaldo Carvalho de Melo &lt;acme@redhat.com&gt;
Cc: Frederic Weisbecker &lt;fweisbec@gmail.com&gt;
LKML-Reference: &lt;new-submission&gt;
Signed-off-by: Ingo Molnar &lt;mingo@elte.hu&gt;
diff --git a/kernel/perf_counter.c b/kernel/perf_counter.c
@@ -2019,6 +2019,10 @@ int perf_counter_task_disable(void)
 	return 0;
 }
 
+#ifndef PERF_COUNTER_INDEX_OFFSET
+# define PERF_COUNTER_INDEX_OFFSET 0
+#endif
+
 static int perf_counter_index(struct perf_counter *counter)
 {
 	if (counter->state != PERF_COUNTER_STATE_ACTIVE)

Original file line number	Diff line number	Diff line change
`@@ -2019,6 +2019,10 @@ int perf_counter_task_disable(void)`
`2019`	`2019`	`return 0;`
`2020`	`2020`	`}`
`2021`	`2021`
	`2022`	`+#ifndef PERF_COUNTER_INDEX_OFFSET`
	`2023`	`+# define PERF_COUNTER_INDEX_OFFSET 0`
	`2024`	`+#endif`
	`2025`	`+`
`2022`	`2026`	`static int perf_counter_index(struct perf_counter *counter)`
`2023`	`2027`	`{`
`2024`	`2028`	`if (counter->state != PERF_COUNTER_STATE_ACTIVE)`