From: Masami Hiramatsu <mhiramat@kernel.org> To: Steven Rostedt <rostedt@goodmis.org> Cc: "Naveen N . Rao" <naveen.n.rao@linux.vnet.ibm.com>, Ananth N Mavinakayanahalli <ananth@linux.ibm.com>, Ingo Molnar <mingo@kernel.org>, linux-kernel@vger.kernel.org, mhiramat@kernel.org, Sven Schnelle <svens@linux.ibm.com>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, Russell King <linux@armlinux.org.uk>, Nathan Chancellor <nathan@kernel.org>, Nick Desaulniers <ndesaulniers@google.com>, linux-arm-kernel@lists.infradead.org Subject: [PATCH 03/10] x86/unwind: Compile kretprobe fixup code only if CONFIG_KRETPROBES=y Date: Fri, 15 Oct 2021 21:51:10 +0900 [thread overview] Message-ID: <163430227030.459050.12754362425825951410.stgit@devnote2> (raw) In-Reply-To: <163430224341.459050.2369208860773018092.stgit@devnote2> Compile kretprobe related stacktrace entry recovery code and unwind_state::kr_cur field only when CONFIG_KRETPROBES=y. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> --- arch/x86/include/asm/unwind.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/x86/include/asm/unwind.h b/arch/x86/include/asm/unwind.h index fca2e783e3ce..2a1f8734416d 100644 --- a/arch/x86/include/asm/unwind.h +++ b/arch/x86/include/asm/unwind.h @@ -16,7 +16,9 @@ struct unwind_state { unsigned long stack_mask; struct task_struct *task; int graph_idx; +#ifdef CONFIG_KRETPROBES struct llist_node *kr_cur; +#endif bool error; #if defined(CONFIG_UNWINDER_ORC) bool signal, full_regs; @@ -105,9 +107,13 @@ static inline unsigned long unwind_recover_kretprobe(struct unwind_state *state, unsigned long addr, unsigned long *addr_p) { +#ifdef CONFIG_KRETPROBES return is_kretprobe_trampoline(addr) ? kretprobe_find_ret_addr(state->task, addr_p, &state->kr_cur) : addr; +#else + return addr; +#endif } /* Recover the return address modified by kretprobe and ftrace_graph. */
WARNING: multiple messages have this Message-ID (diff)
From: Masami Hiramatsu <mhiramat@kernel.org> To: Steven Rostedt <rostedt@goodmis.org> Cc: "Naveen N . Rao" <naveen.n.rao@linux.vnet.ibm.com>, Ananth N Mavinakayanahalli <ananth@linux.ibm.com>, Ingo Molnar <mingo@kernel.org>, linux-kernel@vger.kernel.org, mhiramat@kernel.org, Sven Schnelle <svens@linux.ibm.com>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will@kernel.org>, Russell King <linux@armlinux.org.uk>, Nathan Chancellor <nathan@kernel.org>, Nick Desaulniers <ndesaulniers@google.com>, linux-arm-kernel@lists.infradead.org Subject: [PATCH 03/10] x86/unwind: Compile kretprobe fixup code only if CONFIG_KRETPROBES=y Date: Fri, 15 Oct 2021 21:51:10 +0900 [thread overview] Message-ID: <163430227030.459050.12754362425825951410.stgit@devnote2> (raw) In-Reply-To: <163430224341.459050.2369208860773018092.stgit@devnote2> Compile kretprobe related stacktrace entry recovery code and unwind_state::kr_cur field only when CONFIG_KRETPROBES=y. Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org> --- arch/x86/include/asm/unwind.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/x86/include/asm/unwind.h b/arch/x86/include/asm/unwind.h index fca2e783e3ce..2a1f8734416d 100644 --- a/arch/x86/include/asm/unwind.h +++ b/arch/x86/include/asm/unwind.h @@ -16,7 +16,9 @@ struct unwind_state { unsigned long stack_mask; struct task_struct *task; int graph_idx; +#ifdef CONFIG_KRETPROBES struct llist_node *kr_cur; +#endif bool error; #if defined(CONFIG_UNWINDER_ORC) bool signal, full_regs; @@ -105,9 +107,13 @@ static inline unsigned long unwind_recover_kretprobe(struct unwind_state *state, unsigned long addr, unsigned long *addr_p) { +#ifdef CONFIG_KRETPROBES return is_kretprobe_trampoline(addr) ? kretprobe_find_ret_addr(state->task, addr_p, &state->kr_cur) : addr; +#else + return addr; +#endif } /* Recover the return address modified by kretprobe and ftrace_graph. */ _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2021-10-15 12:51 UTC|newest] Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-10-15 12:50 [PATCH 00/10] kprobes: Make KUnit and add stacktrace on kretprobe tests Masami Hiramatsu 2021-10-15 12:50 ` Masami Hiramatsu 2021-10-15 12:50 ` [PATCH 01/10] kprobes: convert tests to kunit Masami Hiramatsu 2021-10-15 12:50 ` Masami Hiramatsu 2021-10-15 12:51 ` [PATCH 02/10] kprobes: Add a test case for stacktrace from kretprobe handler Masami Hiramatsu 2021-10-15 12:51 ` Masami Hiramatsu 2021-10-15 12:51 ` Masami Hiramatsu [this message] 2021-10-15 12:51 ` [PATCH 03/10] x86/unwind: Compile kretprobe fixup code only if CONFIG_KRETPROBES=y Masami Hiramatsu 2021-10-15 13:10 ` Masami Hiramatsu 2021-10-15 13:10 ` Masami Hiramatsu 2021-10-15 12:51 ` [PATCH 04/10] arm64: kprobes: Record frame pointer with kretprobe instance Masami Hiramatsu 2021-10-15 12:51 ` Masami Hiramatsu 2021-10-15 12:51 ` [PATCH 05/10] arm64: kprobes: Make a frame pointer on __kretprobe_trampoline Masami Hiramatsu 2021-10-15 12:51 ` Masami Hiramatsu 2021-10-15 12:51 ` [PATCH 06/10] arm64: Recover kretprobe modified return address in stacktrace Masami Hiramatsu 2021-10-15 12:51 ` Masami Hiramatsu 2021-10-15 12:51 ` [PATCH 07/10] ARM: clang: Do not rely on lr register for stacktrace Masami Hiramatsu 2021-10-15 12:51 ` Masami Hiramatsu 2021-10-15 12:51 ` [PATCH 08/10] ARM: kprobes: Make a frame pointer on __kretprobe_trampoline Masami Hiramatsu 2021-10-15 12:51 ` Masami Hiramatsu 2021-10-16 10:37 ` kernel test robot 2021-10-16 10:37 ` kernel test robot 2021-10-16 21:15 ` Russell King (Oracle) 2021-10-16 21:15 ` Russell King (Oracle) 2021-10-18 5:55 ` Masami Hiramatsu 2021-10-18 5:55 ` Masami Hiramatsu 2021-10-15 12:52 ` [PATCH 09/10] ARM: Recover kretprobe modified return address in stacktrace Masami Hiramatsu 2021-10-15 12:52 ` Masami Hiramatsu 2021-10-15 12:52 ` [PATCH 10/10] [RFC] arm64: kprobes: Detect error of kretprobe return address fixup Masami Hiramatsu 2021-10-15 12:52 ` Masami Hiramatsu
Reply instructions: You may reply publicly to this message via plain-text email using any one of the following methods: * Save the following mbox file, import it into your mail client, and reply-to-all from there: mbox Avoid top-posting and favor interleaved quoting: https://en.wikipedia.org/wiki/Posting_style#Interleaved_style * Reply using the --to, --cc, and --in-reply-to switches of git-send-email(1): git send-email \ --in-reply-to=163430227030.459050.12754362425825951410.stgit@devnote2 \ --to=mhiramat@kernel.org \ --cc=ananth@linux.ibm.com \ --cc=catalin.marinas@arm.com \ --cc=linux-arm-kernel@lists.infradead.org \ --cc=linux-kernel@vger.kernel.org \ --cc=linux@armlinux.org.uk \ --cc=mingo@kernel.org \ --cc=nathan@kernel.org \ --cc=naveen.n.rao@linux.vnet.ibm.com \ --cc=ndesaulniers@google.com \ --cc=rostedt@goodmis.org \ --cc=svens@linux.ibm.com \ --cc=will@kernel.org \ /path/to/YOUR_REPLY https://kernel.org/pub/software/scm/git/docs/git-send-email.html * If your mail client supports setting the In-Reply-To header via mailto: links, try the mailto: linkBe sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes, see mirroring instructions on how to clone and mirror all data and code used by this external index.