From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from us-smtp-1.mimecast.com ([207.211.31.81] helo=us-smtp-delivery-1.mimecast.com) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jrWjB-0001j0-ER for kexec@lists.infradead.org; Sat, 04 Jul 2020 01:12:27 +0000 Subject: Re: [PATCH v3 3/3] printk: use the lockless ringbuffer References: <20200618144919.9806-1-john.ogness@linutronix.de> <20200618144919.9806-4-john.ogness@linutronix.de> <87zh8imgs5.fsf@jogness.linutronix.de> <585a6a1b-931c-1034-e2cc-da2c4381751e@redhat.com> <20200702133110.GE14288@alley> From: lijiang Message-ID: <56266e04-56b2-41fa-fff1-c3437ddec929@redhat.com> Date: Sat, 4 Jul 2020 09:12:06 +0800 MIME-Version: 1.0 In-Reply-To: <20200702133110.GE14288@alley> Content-Language: en-US List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "kexec" Errors-To: kexec-bounces+dwmw2=infradead.org@lists.infradead.org To: Petr Mladek Cc: Andrea Parri , Paul McKenney , Sergey Senozhatsky , John Ogness , Peter Zijlstra , Greg Kroah-Hartman , kexec@lists.infradead.org, linux-kernel@vger.kernel.org, Steven Rostedt , Sergey Senozhatsky , Thomas Gleixner , Linus Torvalds 5ZyoIDIwMjDlubQwN+aciDAy5pelIDIxOjMxLCBQZXRyIE1sYWRlayDlhpnpgZM6Cj4gT24gVGh1 IDIwMjAtMDctMDIgMTc6NDM6MjIsIGxpamlhbmcgd3JvdGU6Cj4+IOWcqCAyMDIw5bm0MDfmnIgw MuaXpSAxNzowMiwgSm9obiBPZ25lc3Mg5YaZ6YGTOgo+Pj4gT24gMjAyMC0wNy0wMiwgbGlqaWFu ZyA8bGlqaWFuZ0ByZWRoYXQuY29tPiB3cm90ZToKPj4+PiBBYm91dCB0aGUgVk1DT1JFSU5GTyBw YXJ0LCBJIG1hZGUgc29tZSB0ZXN0cyBiYXNlZCBvbiB0aGUga2VybmVsIHBhdGNoCj4+Pj4gdjMs IHRoZSBtYWtlZHVtcGZpbGUgYW5kIGNyYXNoLXV0aWxpdHkgY2FuIHdvcmsgYXMgZXhwZWN0ZWQg d2l0aCB5b3VyCj4+Pj4gcGF0Y2godXNlcnNwYWNlIHBhdGNoKSwgYnV0LCB1bmZvcnR1bmF0ZWx5 LCB0aGUgdm1jb3JlLWRtZXNnKGtleGVjLXRvb2xzKQo+Pj4+IGNhbid0IGNvcnJlY3RseSByZWFk IHRoZSBwcmludGsgcmluZyBidWZmZXIgaW5mb3JtYXRpb24sIGFuZCBnZXQgdGhlCj4+Pj4gZm9s bG93aW5nIGVycm9yOgo+Pj4+Cj4+Pj4gIk1pc3NpbmcgdGhlIGxvZ19idWYgc3ltYm9sIgo+Pj4+ Cj4+Pj4gVGhlIGtleGVjLXRvb2xzKHZtY29yZS1kbWVzZykgc2hvdWxkIGFsc28gaGF2ZSBhIHNp bWlsYXIgcGF0Y2gsIGp1c3QgbGlrZQo+Pj4+IGluIHRoZSBtYWtlZHVtcGZpbGUgYW5kIGNyYXNo LXV0aWxpdHkuCj4+Pgo+Pj4gWWVzLCBhIHBhdGNoIGZvciB0aGlzIGlzIG5lZWRlZCAoYXMgd2Vs bCBhcyBmb3IgYW55IG90aGVyIHJlbGF0ZWQKPj4+IHNvZnR3YXJlIGZsb2F0aW5nIGFyb3VuZCB0 aGUgaW50ZXJuZXQpLgo+Pj4KPj4+IEkgaGF2ZSBubyBSRkMgcGF0Y2hlcyBmb3Igdm1jb3JlLWRt ZXNnLiBMb29raW5nIGF0IHRoZSBjb2RlLCBJIHRoaW5rIGl0Cj4+PiB3b3VsZCBiZSBxdWl0ZSBz dHJhaWdodCBmb3J3YXJkIHRvIHBvcnQgdGhlIG1ha2VkdW1wZmlsZSBwYXRjaC4gSSB3aWxsCj4+ Cj4+IFllcywgaXQgc2hvdWxkIGJlIGEgc2ltaWxhciBwYXRjaC4KPj4KPj4+IHRyeSB0byBtYWtl IHNvbWUgdGltZSBmb3IgdGhpcy4KPj4+Cj4+IFRoYXQgd291bGQgYmUgbmljZS4gVGhhbmsgeW91 LCBKb2huIE9nbmVzcy4KPj4KPj4+IEkgZG8gbm90IHdhbnQgdG8gcGF0Y2ggYW55IG90aGVyIHNv ZnR3YXJlIGZvciB0aGlzLiBJIHRoaW5rIHdpdGggMwo+Pj4gZXhhbXBsZXMgKGNyYXNoLCBtYWtl ZHVtcGZpbGUsIHZtY29yZS1kbWVzZyksIG90aGVycyBzaG91bGQgYmUgYWJsZSB0bwo+Pgo+PiBJ dCdzIGdvb2QgZW5vdWdoIHRvIGhhdmUgdGhlIHBhdGNoIGZvciB0aGUgbWFrZWR1bXBmaWxlLCBj cmFzaCBhbmQgdm1jb3JlLWRtZXNnLAo+PiB3aGljaCBjYW4gZW5zdXJlIHRoZSBrZHVtcCh1c2Vy c3BhY2UpIHdvcmsgd2VsbC4KPiAKPiBJIGFncmVlIHRoYXQgdGhpcyB0aHJlZSBhcmUgdGhlIG1v c3QgaW1wb3J0YW50IG9uZXMgYW5kIHNob3VsZCBiZQo+IGVub3VnaC4KPiAKPiBUaGFua3MgYSBs b3QgZm9yIHdvcmtpbmcgb24gaXQgYW5kIHRlc3RpbmcgaXQuCj4gCk15IHBsZWFzdXJlLiBJIHdp bGwgdGVzdCB0aGUgdm1jb3JlLWRtZXNnIGxhdGVyLgoKVGhhbmtzLgpMaWFuYm8KCj4gQmVzdCBS ZWdhcmRzLAo+IFBldHIKPiAKCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fXwprZXhlYyBtYWlsaW5nIGxpc3QKa2V4ZWNAbGlzdHMuaW5mcmFkZWFkLm9yZwpo dHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2tleGVjCg==