From: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
To: mpe@ellerman.id.au
Cc: linuxppc-dev@lists.ozlabs.org, linux-perf-users@vger.kernel.org,
maddy@linux.ibm.com, kjain@linux.ibm.com, disgoel@linux.ibm.com,
Athira Rajeev <atrajeev@linux.vnet.ibm.com>,
Naveen N Rao <naveen@kernel.org>
Subject: [PATCH 2/2] powerpc/platforms/pseries: Remove unused r0 in the hcall tracing code
Date: Fri, 29 Sep 2023 22:53:37 +0530 [thread overview]
Message-ID: <20230929172337.7906-2-atrajeev@linux.vnet.ibm.com> (raw)
In-Reply-To: <20230929172337.7906-1-atrajeev@linux.vnet.ibm.com>
In the plpar_hcall trace code, currently we use r0
to store the ORed result of r4. But this value is not
used subsequently in the code. Hence remove this unused
save to r0 in plpar_hcall and plpar_hcall9
Suggested-by: Naveen N Rao <naveen@kernel.org>
Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
---
arch/powerpc/platforms/pseries/hvCall.S | 4 ----
1 file changed, 4 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/hvCall.S b/arch/powerpc/platforms/pseries/hvCall.S
index 2addf2ea03f0..2b0cac6fb61f 100644
--- a/arch/powerpc/platforms/pseries/hvCall.S
+++ b/arch/powerpc/platforms/pseries/hvCall.S
@@ -184,8 +184,6 @@ _GLOBAL_TOC(plpar_hcall)
plpar_hcall_trace:
HCALL_INST_PRECALL(R5)
- mr r0,r4
-
mr r4,r5
mr r5,r6
mr r6,r7
@@ -295,8 +293,6 @@ _GLOBAL_TOC(plpar_hcall9)
plpar_hcall9_trace:
HCALL_INST_PRECALL(R5)
- mr r0,r4
-
mr r4,r5
mr r5,r6
mr r6,r7
--
2.39.3
WARNING: multiple messages have this Message-ID (diff)
From: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
To: mpe@ellerman.id.au
Cc: Athira Rajeev <atrajeev@linux.vnet.ibm.com>,
kjain@linux.ibm.com, Naveen N Rao <naveen@kernel.org>,
linux-perf-users@vger.kernel.org, maddy@linux.ibm.com,
disgoel@linux.ibm.com, linuxppc-dev@lists.ozlabs.org
Subject: [PATCH 2/2] powerpc/platforms/pseries: Remove unused r0 in the hcall tracing code
Date: Fri, 29 Sep 2023 22:53:37 +0530 [thread overview]
Message-ID: <20230929172337.7906-2-atrajeev@linux.vnet.ibm.com> (raw)
In-Reply-To: <20230929172337.7906-1-atrajeev@linux.vnet.ibm.com>
In the plpar_hcall trace code, currently we use r0
to store the ORed result of r4. But this value is not
used subsequently in the code. Hence remove this unused
save to r0 in plpar_hcall and plpar_hcall9
Suggested-by: Naveen N Rao <naveen@kernel.org>
Signed-off-by: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
---
arch/powerpc/platforms/pseries/hvCall.S | 4 ----
1 file changed, 4 deletions(-)
diff --git a/arch/powerpc/platforms/pseries/hvCall.S b/arch/powerpc/platforms/pseries/hvCall.S
index 2addf2ea03f0..2b0cac6fb61f 100644
--- a/arch/powerpc/platforms/pseries/hvCall.S
+++ b/arch/powerpc/platforms/pseries/hvCall.S
@@ -184,8 +184,6 @@ _GLOBAL_TOC(plpar_hcall)
plpar_hcall_trace:
HCALL_INST_PRECALL(R5)
- mr r0,r4
-
mr r4,r5
mr r5,r6
mr r6,r7
@@ -295,8 +293,6 @@ _GLOBAL_TOC(plpar_hcall9)
plpar_hcall9_trace:
HCALL_INST_PRECALL(R5)
- mr r0,r4
-
mr r4,r5
mr r5,r6
mr r6,r7
--
2.39.3
next prev parent reply other threads:[~2023-09-29 17:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-09-29 17:23 [PATCH 1/2] powerpc/platforms/pseries: Fix STK_PARAM access in the hcall tracing code Athira Rajeev
2023-09-29 17:23 ` Athira Rajeev
2023-09-29 17:23 ` Athira Rajeev [this message]
2023-09-29 17:23 ` [PATCH 2/2] powerpc/platforms/pseries: Remove unused r0 " Athira Rajeev
2023-10-15 10:00 ` [PATCH 1/2] powerpc/platforms/pseries: Fix STK_PARAM access " Michael Ellerman
2023-10-15 10:00 ` Michael Ellerman
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