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Sun, 11 Oct 2026 13:16:51 -0700 (PDT) From: Matt Turner Date: Sun, 11 Oct 2026 16:16:43 -0400 Subject: [PATCH 3/4] alpha: use user_stack_pointer() in KSTK_ESP() and dump_elf_thread() Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20261011-alpha-perf-regs-v3-v1-3-eaa625a39712@gmail.com> References: <20261011-alpha-perf-regs-v3-v1-0-eaa625a39712@gmail.com> In-Reply-To: <20261011-alpha-perf-regs-v3-v1-0-eaa625a39712@gmail.com> To: Richard Henderson , Magnus Lindholm Cc: linux-alpha@vger.kernel.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-perf-users@vger.kernel.org, Matt Turner X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=1356; i=mattst88@gmail.com; h=from:subject:message-id; bh=EK/AHmbH1n+ZAeHspiEn4hLS0GOcVytyzjbFj3NwaoY=; b=owGbwMvMwCW25rVmCc8sv+mMp9WSGLJOv1slrzqtPdz4pVV3ZCSTN2vLQi/23yz2efO+50UGW emsPfu94yMLgxgXw0wxRZa49Yoss9p2LPU5Lf0LZg4rE8gQaZEGBiBgYeDLTcwrNdIx0jPVNtQz BDJ0jOIhcnoMGpnFxaWpRbppBUUOefkliSWZ+XnFevkFqXkF6QV6aZlpJRkZ+UXFqUAj9PJSS0x dHd2MDA1MLB0tzJwsHE1NnJ2dDJ3cHB2dXZ2MLM1NDJwtHU1cLc0ZuDgFYK5JaGD4X68+m2dhze Ffk+RmJ/evOFBn7f/2mPOxd3MNwrc8qZy1LJ7hr8wLI+O81eF552fzcfNsPtvFIXbu+7NbF9Qvf Ba+2MEhwAgA X-Developer-Key: i=mattst88@gmail.com; a=openpgp; fpr=3BB639E56F861FA2E86505690FDD682D974CA72A Both open-code the same PCB lookup. Assisted-by: Claude:claude-opus-5-5 Signed-off-by: Matt Turner --- arch/alpha/include/asm/processor.h | 3 +-- arch/alpha/kernel/process.c | 2 +- 2 files changed, 2 insertions(+), 3 deletions(-) diff --git a/arch/alpha/include/asm/processor.h b/arch/alpha/include/asm/processor.h index c461a26d47b3..73251cd671e0 100644 --- a/arch/alpha/include/asm/processor.h +++ b/arch/alpha/include/asm/processor.h @@ -43,8 +43,7 @@ unsigned long __get_wchan(struct task_struct *p); #define KSTK_EIP(tsk) (task_pt_regs(tsk)->pc) -#define KSTK_ESP(tsk) \ - ((tsk) == current ? rdusp() : task_thread_info(tsk)->pcb.usp) +#define KSTK_ESP(tsk) user_stack_pointer(task_pt_regs(tsk)) #define cpu_relax() barrier() diff --git a/arch/alpha/kernel/process.c b/arch/alpha/kernel/process.c index 06522451f018..7861c9e767b7 100644 --- a/arch/alpha/kernel/process.c +++ b/arch/alpha/kernel/process.c @@ -318,7 +318,7 @@ dump_elf_thread(elf_greg_t *dest, struct pt_regs *pt, struct thread_info *ti) dest[27] = pt->r27; dest[28] = pt->r28; dest[29] = pt->gp; - dest[30] = ti == current_thread_info() ? rdusp() : ti->pcb.usp; + dest[30] = user_stack_pointer(pt); dest[31] = pt->pc; /* Once upon a time this was the PS value. Which is stupid -- 2.55.0