From: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
To: mpe@ellerman.id.au
Cc: linuxppc-dev@lists.ozlabs.org,
Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Subject: [PATCH] powerpc/perf: Fix perf_get_data_addr() for power9 DD1
Date: Mon, 20 Feb 2017 19:26:30 +0530 [thread overview]
Message-ID: <1487598990-28592-1-git-send-email-maddy@linux.vnet.ibm.com> (raw)
Power9 DD1 do not support PMU_HAS_SIER flag and sdsync
in perf_get_data_addr() defaults to MMCRA_SDSYNC which
is wrong. Since power9 MMCRA does not support SDSYNC bit,
patch includes PPMU_NO_SIAR flag to the check and set the
sdsync with MMCRA_SAMPLE_ENABLE;
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
---
arch/powerpc/perf/core-book3s.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/powerpc/perf/core-book3s.c b/arch/powerpc/perf/core-book3s.c
index 270eb9b74e2e..e9e6dfff032f 100644
--- a/arch/powerpc/perf/core-book3s.c
+++ b/arch/powerpc/perf/core-book3s.c
@@ -183,6 +183,8 @@ static inline void perf_get_data_addr(struct pt_regs *regs, u64 *addrp)
sdsync = POWER7P_MMCRA_SDAR_VALID;
else if (ppmu->flags & PPMU_ALT_SIPR)
sdsync = POWER6_MMCRA_SDSYNC;
+ else if (ppmu->flags & PPMU_NO_SIAR)
+ sdsync = MMCRA_SAMPLE_ENABLE;
else
sdsync = MMCRA_SDSYNC;
--
2.7.4
next reply other threads:[~2017-02-20 13:56 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-20 13:56 Madhavan Srinivasan [this message]
2017-03-14 11:45 ` powerpc/perf: Fix perf_get_data_addr() for power9 DD1 Michael Ellerman
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