summaryrefslogtreecommitdiffstats
path: root/arch/tile/kernel/irq.c
diff options
context:
space:
mode:
authorZhigang Lu <zlu@tilera.com>2014-01-28 03:03:50 +0100
committerChris Metcalf <cmetcalf@tilera.com>2014-03-07 17:19:48 +0100
commit8d61dd7d3e374eb52a174ab04169b04e3d9d729f (patch)
tree0312a9743c802bc329ebcb6ec7952727a5adc204 /arch/tile/kernel/irq.c
parenttile: Enable NMIs on return from handle_nmi() without errors (diff)
downloadlinux-8d61dd7d3e374eb52a174ab04169b04e3d9d729f.tar.xz
linux-8d61dd7d3e374eb52a174ab04169b04e3d9d729f.zip
tile/perf: Support perf_events on tilegx and tilepro
Add perf support for tile architecture. Signed-off-by: Zhigang Lu <zlu@tilera.com> Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'arch/tile/kernel/irq.c')
-rw-r--r--arch/tile/kernel/irq.c18
1 files changed, 18 insertions, 0 deletions
diff --git a/arch/tile/kernel/irq.c b/arch/tile/kernel/irq.c
index 0586fdb9352d..906a76bdb31d 100644
--- a/arch/tile/kernel/irq.c
+++ b/arch/tile/kernel/irq.c
@@ -21,6 +21,7 @@
#include <hv/drv_pcie_rc_intf.h>
#include <arch/spr_def.h>
#include <asm/traps.h>
+#include <linux/perf_event.h>
/* Bit-flag stored in irq_desc->chip_data to indicate HW-cleared irqs. */
#define IS_HW_CLEARED 1
@@ -261,6 +262,23 @@ void ack_bad_irq(unsigned int irq)
}
/*
+ * /proc/interrupts printing:
+ */
+int arch_show_interrupts(struct seq_file *p, int prec)
+{
+#ifdef CONFIG_PERF_EVENTS
+ int i;
+
+ seq_printf(p, "%*s: ", prec, "PMI");
+
+ for_each_online_cpu(i)
+ seq_printf(p, "%10llu ", per_cpu(perf_irqs, i));
+ seq_puts(p, " perf_events\n");
+#endif
+ return 0;
+}
+
+/*
* Generic, controller-independent functions:
*/