From: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
To: Oleg Nesterov <oleg@redhat.com>
Cc: mhiramat@kernel.org, peterz@infradead.org,
srikar@linux.vnet.ibm.com, rostedt@goodmis.org, acme@kernel.org,
ananth@linux.vnet.ibm.com, akpm@linux-foundation.org,
alexander.shishkin@linux.intel.com, alexis.berlemont@gmail.com,
corbet@lwn.net, dan.j.williams@intel.com, jolsa@redhat.com,
kan.liang@intel.com, kjlx@templeofstupid.com,
kstewart@linuxfoundation.org, linux-doc@vger.kernel.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
milian.wolff@kdab.com, mingo@redhat.com, namhyung@kernel.org,
naveen.n.rao@linux.vnet.ibm.com, pc@us.ibm.com,
tglx@linutronix.de, yao.jin@linux.intel.com,
fengguang.wu@intel.com, jglisse@redhat.com,
Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Subject: Re: [PATCH v2 7/9] trace_uprobe/sdt: Fix multiple update of same reference counter
Date: Mon, 9 Apr 2018 19:02:02 +0530 [thread overview]
Message-ID: <90d2fc35-0d58-1cab-a474-642192c7e1ff@linux.vnet.ibm.com> (raw)
In-Reply-To: <20180409131730.GA25631@redhat.com>
Hi Oleg,
On 04/09/2018 06:47 PM, Oleg Nesterov wrote:
> On 04/04, Ravi Bangoria wrote:
>> +static void sdt_add_mm_list(struct trace_uprobe *tu, struct mm_struct *mm)
>> +{
>> + struct mmu_notifier *mn;
>> + struct sdt_mm_list *sml = kzalloc(sizeof(*sml), GFP_KERNEL);
>> +
>> + if (!sml)
>> + return;
>> + sml->mm = mm;
>> + list_add(&(sml->list), &(tu->sml.list));
>> +
>> + /* Register mmu_notifier for this mm. */
>> + mn = kzalloc(sizeof(*mn), GFP_KERNEL);
>> + if (!mn)
>> + return;
>> +
>> + mn->ops = &sdt_mmu_notifier_ops;
>> + __mmu_notifier_register(mn, mm);
>> +}
> I didn't read this version yet, just one question...
>
> So now it depends on CONFIG_MMU_NOTIFIER, yes? I do not see any changes in Kconfig
> files, this doesn't look right...
Yes, you are write. I'll make CONFIG_UPROBE_EVENTS dependent on
CONFIG_MMU_NOTIFIER.
Thanks,
Ravi
next prev parent reply other threads:[~2018-04-09 13:32 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-04 8:31 [PATCH v2 0/9] trace_uprobe: Support SDT markers having reference count (semaphore) Ravi Bangoria
2018-04-04 8:31 ` [PATCH v2 1/9] Uprobe: Export vaddr <-> offset conversion functions Ravi Bangoria
2018-04-04 8:31 ` [PATCH v2 2/9] mm: Prefix vma_ to vaddr_to_offset() and offset_to_vaddr() Ravi Bangoria
2018-04-04 8:31 ` [PATCH v2 3/9] Uprobe: Move mmput() into free_map_info() Ravi Bangoria
2018-04-04 8:31 ` [PATCH v2 4/9] Uprobe: Rename map_info to uprobe_map_info Ravi Bangoria
2018-04-04 8:31 ` [PATCH v2 5/9] Uprobe: Export uprobe_map_info along with uprobe_{build/free}_map_info() Ravi Bangoria
2018-04-04 8:31 ` [PATCH v2 6/9] trace_uprobe: Support SDT markers having reference count (semaphore) Ravi Bangoria
2018-04-04 15:03 ` [RFC PATCH] trace_uprobe: trace_uprobe_mmap() can be static kbuild test robot
2018-04-04 15:03 ` [PATCH v2 6/9] trace_uprobe: Support SDT markers having reference count (semaphore) kbuild test robot
2018-04-04 8:31 ` [PATCH v2 7/9] trace_uprobe/sdt: Fix multiple update of same reference counter Ravi Bangoria
2018-04-04 13:18 ` kbuild test robot
2018-04-04 13:24 ` kbuild test robot
2018-04-09 13:17 ` Oleg Nesterov
2018-04-09 13:32 ` Ravi Bangoria [this message]
2018-04-09 13:41 ` Ravi Bangoria
2018-04-09 13:29 ` Oleg Nesterov
2018-04-10 8:19 ` Ravi Bangoria
2018-04-10 11:06 ` Oleg Nesterov
2018-04-11 4:28 ` Ravi Bangoria
2018-04-04 8:31 ` [PATCH v2 8/9] trace_uprobe/sdt: Document about " Ravi Bangoria
2018-04-04 8:31 ` [PATCH v2 9/9] perf probe: Support SDT markers having reference counter (semaphore) Ravi Bangoria
2018-04-09 7:28 ` Masami Hiramatsu
2018-04-09 8:29 ` Ravi Bangoria
2018-04-09 14:08 ` Masami Hiramatsu
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