From: Song Liu <liu.song.a23@gmail.com>
To: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Cc: srikar@linux.vnet.ibm.com, Oleg Nesterov <oleg@redhat.com>,
Steven Rostedt <rostedt@goodmis.org>,
mhiramat@kernel.org, Peter Zijlstra <peterz@infradead.org>,
mingo@redhat.com, acme@kernel.org,
alexander.shishkin@linux.intel.com, jolsa@redhat.com,
namhyung@kernel.org, open list <linux-kernel@vger.kernel.org>,
ananth@linux.vnet.ibm.com,
Alexis Berlemont <alexis.berlemont@gmail.com>,
naveen.n.rao@linux.vnet.ibm.com,
linux-arm-kernel@lists.infradead.org, linux-mips@linux-mips.org,
linux@armlinux.org.uk, ralf@linux-mips.org, paul.burton@mips.com
Subject: Re: [PATCH v8 2/6] Uprobe: Additional argument arch_uprobe to uprobe_write_opcode()
Date: Sat, 11 Aug 2018 01:01:48 -0700 [thread overview]
Message-ID: <CAPhsuW71ysLTafz2y=v_dY_=0BOn0MDL0TKD6eEBQ2ZQUTBuvw@mail.gmail.com> (raw)
In-Reply-To: <20180809041856.1547-3-ravi.bangoria@linux.ibm.com>
On Wed, Aug 8, 2018 at 9:18 PM, Ravi Bangoria
<ravi.bangoria@linux.ibm.com> wrote:
> Add addition argument 'arch_uprobe' to uprobe_write_opcode().
> We need this in later set of patches.
>
> Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Reviewed-by: Song Liu <songliubraving@fb.com>
> ---
> arch/arm/probes/uprobes/core.c | 2 +-
> arch/mips/kernel/uprobes.c | 2 +-
> include/linux/uprobes.h | 2 +-
> kernel/events/uprobes.c | 9 +++++----
> 4 files changed, 8 insertions(+), 7 deletions(-)
>
> diff --git a/arch/arm/probes/uprobes/core.c b/arch/arm/probes/uprobes/core.c
> index d1329f1ba4e4..bf992264060e 100644
> --- a/arch/arm/probes/uprobes/core.c
> +++ b/arch/arm/probes/uprobes/core.c
> @@ -32,7 +32,7 @@ bool is_swbp_insn(uprobe_opcode_t *insn)
> int set_swbp(struct arch_uprobe *auprobe, struct mm_struct *mm,
> unsigned long vaddr)
> {
> - return uprobe_write_opcode(mm, vaddr,
> + return uprobe_write_opcode(auprobe, mm, vaddr,
> __opcode_to_mem_arm(auprobe->bpinsn));
> }
>
> diff --git a/arch/mips/kernel/uprobes.c b/arch/mips/kernel/uprobes.c
> index f7a0645ccb82..4aaff3b3175c 100644
> --- a/arch/mips/kernel/uprobes.c
> +++ b/arch/mips/kernel/uprobes.c
> @@ -224,7 +224,7 @@ unsigned long arch_uretprobe_hijack_return_addr(
> int __weak set_swbp(struct arch_uprobe *auprobe, struct mm_struct *mm,
> unsigned long vaddr)
> {
> - return uprobe_write_opcode(mm, vaddr, UPROBE_SWBP_INSN);
> + return uprobe_write_opcode(auprobe, mm, vaddr, UPROBE_SWBP_INSN);
> }
>
> void arch_uprobe_copy_ixol(struct page *page, unsigned long vaddr,
> diff --git a/include/linux/uprobes.h b/include/linux/uprobes.h
> index 0a294e950df8..bb9d2084af03 100644
> --- a/include/linux/uprobes.h
> +++ b/include/linux/uprobes.h
> @@ -121,7 +121,7 @@ extern bool is_swbp_insn(uprobe_opcode_t *insn);
> extern bool is_trap_insn(uprobe_opcode_t *insn);
> extern unsigned long uprobe_get_swbp_addr(struct pt_regs *regs);
> extern unsigned long uprobe_get_trap_addr(struct pt_regs *regs);
> -extern int uprobe_write_opcode(struct mm_struct *mm, unsigned long vaddr, uprobe_opcode_t);
> +extern int uprobe_write_opcode(struct arch_uprobe *auprobe, struct mm_struct *mm, unsigned long vaddr, uprobe_opcode_t);
> extern int uprobe_register(struct inode *inode, loff_t offset, struct uprobe_consumer *uc);
> extern int uprobe_apply(struct inode *inode, loff_t offset, struct uprobe_consumer *uc, bool);
> extern void uprobe_unregister(struct inode *inode, loff_t offset, struct uprobe_consumer *uc);
> diff --git a/kernel/events/uprobes.c b/kernel/events/uprobes.c
> index 471eac896635..c0418ba52ba8 100644
> --- a/kernel/events/uprobes.c
> +++ b/kernel/events/uprobes.c
> @@ -299,8 +299,8 @@ static int verify_opcode(struct page *page, unsigned long vaddr, uprobe_opcode_t
> * Called with mm->mmap_sem held for write.
> * Return 0 (success) or a negative errno.
> */
> -int uprobe_write_opcode(struct mm_struct *mm, unsigned long vaddr,
> - uprobe_opcode_t opcode)
> +int uprobe_write_opcode(struct arch_uprobe *auprobe, struct mm_struct *mm,
> + unsigned long vaddr, uprobe_opcode_t opcode)
> {
> struct page *old_page, *new_page;
> struct vm_area_struct *vma;
> @@ -351,7 +351,7 @@ int uprobe_write_opcode(struct mm_struct *mm, unsigned long vaddr,
> */
> int __weak set_swbp(struct arch_uprobe *auprobe, struct mm_struct *mm, unsigned long vaddr)
> {
> - return uprobe_write_opcode(mm, vaddr, UPROBE_SWBP_INSN);
> + return uprobe_write_opcode(auprobe, mm, vaddr, UPROBE_SWBP_INSN);
> }
>
> /**
> @@ -366,7 +366,8 @@ int __weak set_swbp(struct arch_uprobe *auprobe, struct mm_struct *mm, unsigned
> int __weak
> set_orig_insn(struct arch_uprobe *auprobe, struct mm_struct *mm, unsigned long vaddr)
> {
> - return uprobe_write_opcode(mm, vaddr, *(uprobe_opcode_t *)&auprobe->insn);
> + return uprobe_write_opcode(auprobe, mm, vaddr,
> + *(uprobe_opcode_t *)&auprobe->insn);
> }
>
> static struct uprobe *get_uprobe(struct uprobe *uprobe)
> --
> 2.14.4
>
next prev parent reply other threads:[~2018-08-11 8:01 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-09 4:18 [PATCH v8 0/6] Uprobes: Support SDT markers having reference count (semaphore) Ravi Bangoria
2018-08-09 4:18 ` [PATCH v8 1/6] Uprobes: Simplify uprobe_register() body Ravi Bangoria
2018-08-11 8:00 ` Song Liu
2018-08-13 8:56 ` Srikar Dronamraju
2018-08-14 0:07 ` Steven Rostedt
2018-08-09 4:18 ` [PATCH v8 2/6] Uprobe: Additional argument arch_uprobe to uprobe_write_opcode() Ravi Bangoria
2018-08-11 8:01 ` Song Liu [this message]
2018-08-13 8:51 ` Srikar Dronamraju
2018-08-09 4:18 ` [PATCH v8 3/6] Uprobes: Support SDT markers having reference count (semaphore) Ravi Bangoria
2018-08-09 14:38 ` Oleg Nesterov
2018-08-10 19:58 ` Steven Rostedt
2018-08-11 6:14 ` Song Liu
2018-08-14 0:01 ` Steven Rostedt
2018-08-14 0:05 ` Steven Rostedt
2018-08-11 7:57 ` Song Liu
2018-08-11 15:37 ` Steven Rostedt
2018-08-13 5:47 ` Ravi Bangoria
2018-08-13 7:38 ` Ravi Bangoria
2018-08-13 11:50 ` Oleg Nesterov
2018-08-13 13:01 ` Ravi Bangoria
2018-08-13 13:17 ` Oleg Nesterov
2018-08-13 14:26 ` Ravi Bangoria
2018-08-13 14:51 ` Oleg Nesterov
2018-08-13 17:12 ` Song Liu
2018-08-14 4:37 ` Ravi Bangoria
2018-08-14 16:35 ` Song Liu
2018-08-14 0:03 ` Steven Rostedt
2018-08-13 16:50 ` Song Liu
2018-08-13 10:03 ` Srikar Dronamraju
2018-08-13 11:23 ` Oleg Nesterov
2018-08-14 8:56 ` Ravi Bangoria
2018-08-09 4:18 ` [PATCH v8 4/6] Uprobes/sdt: Prevent multiple reference counter for same uprobe Ravi Bangoria
2018-08-11 8:04 ` Song Liu
2018-08-13 8:50 ` Srikar Dronamraju
2018-08-09 4:18 ` [PATCH v8 5/6] trace_uprobe/sdt: " Ravi Bangoria
2018-08-11 8:12 ` Song Liu
2018-08-13 8:19 ` Ravi Bangoria
2018-08-13 8:49 ` Srikar Dronamraju
2018-08-13 16:27 ` Song Liu
2018-08-13 8:48 ` Srikar Dronamraju
2018-08-09 4:18 ` [PATCH v8 6/6] perf probe: Support SDT markers having reference counter (semaphore) Ravi Bangoria
2018-08-13 16:55 ` [PATCH v8 0/6] Uprobes: Support SDT markers having reference count (semaphore) Oleg Nesterov
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