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GET /api/1.1/patches/2228807/?format=api
{ "id": 2228807, "url": "http://patchwork.ozlabs.org/api/1.1/patches/2228807/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260427122742.210074-9-mkchauras@gmail.com/", "project": { "id": 2, "url": "http://patchwork.ozlabs.org/api/1.1/projects/2/?format=api", "name": "Linux PPC development", "link_name": "linuxppc-dev", "list_id": "linuxppc-dev.lists.ozlabs.org", "list_email": "linuxppc-dev@lists.ozlabs.org", "web_url": "https://github.com/linuxppc/wiki/wiki", "scm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git", "webscm_url": "https://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux.git/" }, "msgid": "<20260427122742.210074-9-mkchauras@gmail.com>", "date": "2026-04-27T12:27:42", "name": "[v5,8/8] powerpc: Remove unused functions", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "37d7d9000f1061cf982353378b550880852967c4", "submitter": { "id": 92575, "url": "http://patchwork.ozlabs.org/api/1.1/people/92575/?format=api", "name": "Mukesh Kumar Chaurasiya", "email": "mkchauras@gmail.com" }, "delegate": null, "mbox": "http://patchwork.ozlabs.org/project/linuxppc-dev/patch/20260427122742.210074-9-mkchauras@gmail.com/mbox/", "series": [ { "id": 501638, "url": "http://patchwork.ozlabs.org/api/1.1/series/501638/?format=api", "web_url": "http://patchwork.ozlabs.org/project/linuxppc-dev/list/?series=501638", "date": "2026-04-27T12:27:34", "name": "Generic IRQ entry/exit support for powerpc", "version": 5, "mbox": "http://patchwork.ozlabs.org/series/501638/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2228807/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2228807/checks/", "tags": {}, "headers": { "Return-Path": "\n <linuxppc-dev+bounces-20167-incoming=patchwork.ozlabs.org@lists.ozlabs.org>", "X-Original-To": [ "incoming@patchwork.ozlabs.org", "linuxppc-dev@lists.ozlabs.org" ], "Delivered-To": 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"maddy@linux.ibm.com,\n\tmpe@ellerman.id.au,\n\tnpiggin@gmail.com,\n\tchleroy@kernel.org,\n\tryabinin.a.a@gmail.com,\n\tglider@google.com,\n\tandreyknvl@gmail.com,\n\tdvyukov@google.com,\n\tvincenzo.frascino@arm.com,\n\toleg@redhat.com,\n\tkees@kernel.org,\n\tluto@amacapital.net,\n\twad@chromium.org,\n\tmchauras@linux.ibm.com,\n\tsshegde@linux.ibm.com,\n\tthuth@redhat.com,\n\truanjinjie@huawei.com,\n\takpm@linux-foundation.org,\n\tmacro@orcam.me.uk,\n\tldv@strace.io,\n\tcharlie@rivosinc.com,\n\tdeller@gmx.de,\n\tkevin.brodsky@arm.com,\n\tritesh.list@gmail.com,\n\tyeoreum.yun@arm.com,\n\tagordeev@linux.ibm.com,\n\tsegher@kernel.crashing.org,\n\tmark.rutland@arm.com,\n\tryan.roberts@arm.com,\n\tpmladek@suse.com,\n\tfeng.tang@linux.alibaba.com,\n\tpeterz@infradead.org,\n\tkan.liang@linux.intel.com,\n\tlinuxppc-dev@lists.ozlabs.org,\n\tlinux-kernel@vger.kernel.org,\n\tkasan-dev@googlegroups.com", "Cc": "Mukesh Kumar Chaurasiya <mkchauras@linux.ibm.com>,\n\tSamir M <samir@linux.ibm.com>,\n\tDavid Gow <davidgow@google.com>,\n\tVenkat Rao Bagalkote <venkat88@linux.ibm.com>", "Subject": "[PATCH v5 8/8] powerpc: Remove unused functions", "Date": "Mon, 27 Apr 2026 17:57:42 +0530", "Message-ID": "<20260427122742.210074-9-mkchauras@gmail.com>", "X-Mailer": "git-send-email 2.53.0", "In-Reply-To": "<20260427122742.210074-1-mkchauras@gmail.com>", "References": "<20260427122742.210074-1-mkchauras@gmail.com>", "X-Mailing-List": "linuxppc-dev@lists.ozlabs.org", "List-Id": "<linuxppc-dev.lists.ozlabs.org>", "List-Help": "<mailto:linuxppc-dev+help@lists.ozlabs.org>", "List-Owner": "<mailto:linuxppc-dev+owner@lists.ozlabs.org>", "List-Post": "<mailto:linuxppc-dev@lists.ozlabs.org>", "List-Archive": "<https://lore.kernel.org/linuxppc-dev/>,\n <https://lists.ozlabs.org/pipermail/linuxppc-dev/>", "List-Subscribe": "<mailto:linuxppc-dev+subscribe@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-digest@lists.ozlabs.org>,\n <mailto:linuxppc-dev+subscribe-nomail@lists.ozlabs.org>", "List-Unsubscribe": "<mailto:linuxppc-dev+unsubscribe@lists.ozlabs.org>", "Precedence": "list", "MIME-Version": "1.0", "Content-Transfer-Encoding": "8bit", "X-Spam-Status": "No, score=-0.2 required=3.0 tests=DKIM_SIGNED,DKIM_VALID,\n\tDKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM,RCVD_IN_DNSWL_NONE,\n\tSPF_HELO_NONE,SPF_PASS autolearn=disabled version=4.0.1 OzLabs 8", "X-Spam-Checker-Version": "SpamAssassin 4.0.1 (2024-03-25) on lists.ozlabs.org" }, "content": "From: Mukesh Kumar Chaurasiya <mkchauras@linux.ibm.com>\n\nAfter enabling GENERIC_ENTRY some functions are left unused.\nCleanup all those functions which includes:\n - do_syscall_trace_enter\n - do_syscall_trace_leave\n - do_notify_resume\n - do_seccomp\n\nSigned-off-by: Mukesh Kumar Chaurasiya <mkchauras@linux.ibm.com>\nTested-by: Samir M <samir@linux.ibm.com>\nTested-by: David Gow <davidgow@google.com>\nTested-by: Venkat Rao Bagalkote <venkat88@linux.ibm.com>\nReviewed-by: Shrikanth Hegde <sshegde@linux.ibm.com>\n---\n arch/powerpc/include/asm/ptrace.h | 3 -\n arch/powerpc/include/asm/signal.h | 1 -\n arch/powerpc/kernel/ptrace/ptrace.c | 138 ----------------------------\n arch/powerpc/kernel/signal.c | 17 ----\n 4 files changed, 159 deletions(-)", "diff": "diff --git a/arch/powerpc/include/asm/ptrace.h b/arch/powerpc/include/asm/ptrace.h\nindex 2e741ea57b80..fdeb97421785 100644\n--- a/arch/powerpc/include/asm/ptrace.h\n+++ b/arch/powerpc/include/asm/ptrace.h\n@@ -177,9 +177,6 @@ extern unsigned long profile_pc(struct pt_regs *regs);\n #define profile_pc(regs) instruction_pointer(regs)\n #endif\n \n-long do_syscall_trace_enter(struct pt_regs *regs);\n-void do_syscall_trace_leave(struct pt_regs *regs);\n-\n static inline void set_return_regs_changed(void)\n {\n #ifdef CONFIG_PPC_BOOK3S_64\ndiff --git a/arch/powerpc/include/asm/signal.h b/arch/powerpc/include/asm/signal.h\nindex 922d43700fb4..21af92cdb237 100644\n--- a/arch/powerpc/include/asm/signal.h\n+++ b/arch/powerpc/include/asm/signal.h\n@@ -7,7 +7,6 @@\n #include <uapi/asm/ptrace.h>\n \n struct pt_regs;\n-void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags);\n \n unsigned long get_min_sigframe_size_32(void);\n unsigned long get_min_sigframe_size_64(void);\ndiff --git a/arch/powerpc/kernel/ptrace/ptrace.c b/arch/powerpc/kernel/ptrace/ptrace.c\nindex f006a03a0211..316d4f5ead8e 100644\n--- a/arch/powerpc/kernel/ptrace/ptrace.c\n+++ b/arch/powerpc/kernel/ptrace/ptrace.c\n@@ -192,144 +192,6 @@ long arch_ptrace(struct task_struct *child, long request,\n \treturn ret;\n }\n \n-#ifdef CONFIG_SECCOMP\n-static int do_seccomp(struct pt_regs *regs)\n-{\n-\tif (!test_thread_flag(TIF_SECCOMP))\n-\t\treturn 0;\n-\n-\t/*\n-\t * The ABI we present to seccomp tracers is that r3 contains\n-\t * the syscall return value and orig_gpr3 contains the first\n-\t * syscall parameter. This is different to the ptrace ABI where\n-\t * both r3 and orig_gpr3 contain the first syscall parameter.\n-\t */\n-\tregs->gpr[3] = -ENOSYS;\n-\n-\t/*\n-\t * We use the __ version here because we have already checked\n-\t * TIF_SECCOMP. If this fails, there is nothing left to do, we\n-\t * have already loaded -ENOSYS into r3, or seccomp has put\n-\t * something else in r3 (via SECCOMP_RET_ERRNO/TRACE).\n-\t */\n-\tif (__secure_computing())\n-\t\treturn -1;\n-\n-\t/*\n-\t * The syscall was allowed by seccomp, restore the register\n-\t * state to what audit expects.\n-\t * Note that we use orig_gpr3, which means a seccomp tracer can\n-\t * modify the first syscall parameter (in orig_gpr3) and also\n-\t * allow the syscall to proceed.\n-\t */\n-\tregs->gpr[3] = regs->orig_gpr3;\n-\n-\treturn 0;\n-}\n-#else\n-static inline int do_seccomp(struct pt_regs *regs) { return 0; }\n-#endif /* CONFIG_SECCOMP */\n-\n-/**\n- * do_syscall_trace_enter() - Do syscall tracing on kernel entry.\n- * @regs: the pt_regs of the task to trace (current)\n- *\n- * Performs various types of tracing on syscall entry. This includes seccomp,\n- * ptrace, syscall tracepoints and audit.\n- *\n- * The pt_regs are potentially visible to userspace via ptrace, so their\n- * contents is ABI.\n- *\n- * One or more of the tracers may modify the contents of pt_regs, in particular\n- * to modify arguments or even the syscall number itself.\n- *\n- * It's also possible that a tracer can choose to reject the system call. In\n- * that case this function will return an illegal syscall number, and will put\n- * an appropriate return value in regs->r3.\n- *\n- * Return: the (possibly changed) syscall number.\n- */\n-long do_syscall_trace_enter(struct pt_regs *regs)\n-{\n-\tu32 flags;\n-\n-\tflags = read_thread_flags() & (_TIF_SYSCALL_EMU | _TIF_SYSCALL_TRACE);\n-\n-\tif (flags) {\n-\t\tint rc = ptrace_report_syscall_entry(regs);\n-\n-\t\tif (unlikely(flags & _TIF_SYSCALL_EMU)) {\n-\t\t\t/*\n-\t\t\t * A nonzero return code from\n-\t\t\t * ptrace_report_syscall_entry() tells us to prevent\n-\t\t\t * the syscall execution, but we are not going to\n-\t\t\t * execute it anyway.\n-\t\t\t *\n-\t\t\t * Returning -1 will skip the syscall execution. We want\n-\t\t\t * to avoid clobbering any registers, so we don't goto\n-\t\t\t * the skip label below.\n-\t\t\t */\n-\t\t\treturn -1;\n-\t\t}\n-\n-\t\tif (rc) {\n-\t\t\t/*\n-\t\t\t * The tracer decided to abort the syscall. Note that\n-\t\t\t * the tracer may also just change regs->gpr[0] to an\n-\t\t\t * invalid syscall number, that is handled below on the\n-\t\t\t * exit path.\n-\t\t\t */\n-\t\t\tgoto skip;\n-\t\t}\n-\t}\n-\n-\t/* Run seccomp after ptrace; allow it to set gpr[3]. */\n-\tif (do_seccomp(regs))\n-\t\treturn -1;\n-\n-\t/* Avoid trace and audit when syscall is invalid. */\n-\tif (regs->gpr[0] >= NR_syscalls)\n-\t\tgoto skip;\n-\n-\tif (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))\n-\t\ttrace_sys_enter(regs, regs->gpr[0]);\n-\n-\tif (!is_32bit_task())\n-\t\taudit_syscall_entry(regs->gpr[0], regs->gpr[3], regs->gpr[4],\n-\t\t\t\t regs->gpr[5], regs->gpr[6]);\n-\telse\n-\t\taudit_syscall_entry(regs->gpr[0],\n-\t\t\t\t regs->gpr[3] & 0xffffffff,\n-\t\t\t\t regs->gpr[4] & 0xffffffff,\n-\t\t\t\t regs->gpr[5] & 0xffffffff,\n-\t\t\t\t regs->gpr[6] & 0xffffffff);\n-\n-\t/* Return the possibly modified but valid syscall number */\n-\treturn regs->gpr[0];\n-\n-skip:\n-\t/*\n-\t * If we are aborting explicitly, or if the syscall number is\n-\t * now invalid, set the return value to -ENOSYS.\n-\t */\n-\tregs->gpr[3] = -ENOSYS;\n-\treturn -1;\n-}\n-\n-void do_syscall_trace_leave(struct pt_regs *regs)\n-{\n-\tint step;\n-\n-\taudit_syscall_exit(regs);\n-\n-\tif (unlikely(test_thread_flag(TIF_SYSCALL_TRACEPOINT)))\n-\t\ttrace_sys_exit(regs, regs->result);\n-\n-\tstep = test_thread_flag(TIF_SINGLESTEP);\n-\tif (step || test_thread_flag(TIF_SYSCALL_TRACE))\n-\t\tptrace_report_syscall_exit(regs, step);\n-}\n-\n void __init pt_regs_check(void);\n \n /*\ndiff --git a/arch/powerpc/kernel/signal.c b/arch/powerpc/kernel/signal.c\nindex 9f1847b4742e..bb42a8b6c642 100644\n--- a/arch/powerpc/kernel/signal.c\n+++ b/arch/powerpc/kernel/signal.c\n@@ -293,23 +293,6 @@ static void do_signal(struct task_struct *tsk)\n \tsignal_setup_done(ret, &ksig, test_thread_flag(TIF_SINGLESTEP));\n }\n \n-void do_notify_resume(struct pt_regs *regs, unsigned long thread_info_flags)\n-{\n-\tif (thread_info_flags & _TIF_UPROBE)\n-\t\tuprobe_notify_resume(regs);\n-\n-\tif (thread_info_flags & _TIF_PATCH_PENDING)\n-\t\tklp_update_patch_state(current);\n-\n-\tif (thread_info_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL)) {\n-\t\tBUG_ON(regs != current->thread.regs);\n-\t\tdo_signal(current);\n-\t}\n-\n-\tif (thread_info_flags & _TIF_NOTIFY_RESUME)\n-\t\tresume_user_mode_work(regs);\n-}\n-\n static unsigned long get_tm_stackpointer(struct task_struct *tsk)\n {\n \t/* When in an active transaction that takes a signal, we need to be\n", "prefixes": [ "v5", "8/8" ] }