From: Max Filippov <jcmvbkbc@gmail.com>
To: linux-xtensa@linux-xtensa.org, linux-kernel@vger.kernel.org
Cc: Chris Zankel <chris@zankel.net>, Marc Gauthier <marc@cadence.com>,
Max Filippov <jcmvbkbc@gmail.com>
Subject: [PATCH 6/8] xtensa: count software page fault perf events
Date: Mon, 6 Jul 2015 16:32:47 +0300 [thread overview]
Message-ID: <1436189569-28802-7-git-send-email-jcmvbkbc@gmail.com> (raw)
In-Reply-To: <1436189569-28802-1-git-send-email-jcmvbkbc@gmail.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
---
arch/xtensa/mm/fault.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/xtensa/mm/fault.c b/arch/xtensa/mm/fault.c
index 9e3571a..76360a2 100644
--- a/arch/xtensa/mm/fault.c
+++ b/arch/xtensa/mm/fault.c
@@ -15,6 +15,7 @@
#include <linux/mm.h>
#include <linux/module.h>
#include <linux/hardirq.h>
+#include <linux/perf_event.h>
#include <asm/mmu_context.h>
#include <asm/cacheflush.h>
#include <asm/hardirq.h>
@@ -142,6 +143,12 @@ good_area:
}
up_read(&mm->mmap_sem);
+ perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS, 1, regs, address);
+ if (flags & VM_FAULT_MAJOR)
+ perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MAJ, 1, regs, address);
+ else if (flags & VM_FAULT_MINOR)
+ perf_sw_event(PERF_COUNT_SW_PAGE_FAULTS_MIN, 1, regs, address);
+
return;
/* Something tried to access memory that isn't in our memory map..
--
1.8.1.4
next prev parent reply other threads:[~2015-07-06 13:34 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-06 13:32 [PATCH 0/8] Support hardware perf counters on xtensa Max Filippov
2015-07-06 13:32 ` [PATCH 1/8] xtensa: clean up Kconfig dependencies for custom cores Max Filippov
2015-07-07 9:18 ` Paul Bolle
2015-07-06 13:32 ` [PATCH 2/8] xtensa: keep exception/interrupt stack continuous Max Filippov
2015-07-07 18:47 ` Chris Zankel
2015-07-07 19:46 ` Max Filippov
2015-07-07 19:47 ` Max Filippov
2015-07-06 13:32 ` [PATCH 3/8] xtensa: move oprofile stack tracing to stacktrace.c Max Filippov
2015-07-06 13:32 ` [PATCH 4/8] xtensa: select PERF_USE_VMALLOC for cache-aliasing configurations Max Filippov
2015-07-06 13:32 ` [PATCH 5/8] xtensa: add profiling IRQ type to xtensa_irq_map Max Filippov
2015-07-06 13:32 ` Max Filippov [this message]
2015-07-06 13:32 ` [PATCH 7/8] xtensa: implement counting and sampling perf events Max Filippov
2015-07-06 13:41 ` Peter Zijlstra
2015-07-06 13:49 ` Max Filippov
2015-07-06 13:47 ` Peter Zijlstra
2015-07-06 13:56 ` Max Filippov
2015-07-06 14:05 ` Peter Zijlstra
2015-07-06 14:22 ` Max Filippov
2015-07-07 3:56 ` Chris Zankel
2015-07-06 13:32 ` [PATCH 8/8] perf tools: xtensa: add DWARF register names Max Filippov
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