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([2a0c:5a80:3c10:3400:3c70:6643:6e71:7eae]) by smtp.gmail.com with ESMTPSA id a10sm4350726wmq.27.2021.11.24.01.45.44 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 24 Nov 2021 01:45:45 -0800 (PST) Message-ID: <482c55bc52b17c4ddf113a75acaca73a0c0a7b9b.camel@redhat.com> Subject: Re: [RFC PATCH 1/2] arm64/tracing: add cntvct based trace clock From: Nicolas Saenz Julienne To: Steven Rostedt Cc: linux-arm-kernel@lists.infradead.org, maz@kernel.org, james.morse@arm.com, alexandru.elisei@arm.com, suzuki.poulose@arm.com, catalin.marinas@arm.com, will@kernel.org, linux-kernel@vger.kernel.org, kvmarm@lists.cs.columbia.edu, mingo@redhat.com, mtosatti@redhat.com, nilal@redhat.com, Linux Trace Devel Date: Wed, 24 Nov 2021 10:45:44 +0100 In-Reply-To: <20211122095735.2340f38f@gandalf.local.home> References: <20211119102117.22304-1-nsaenzju@redhat.com> <20211119102117.22304-2-nsaenzju@redhat.com> <20211122095735.2340f38f@gandalf.local.home> User-Agent: Evolution 3.42.1 (3.42.1-1.fc35) MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=nsaenzju@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20211124_014552_889340_A642B1FA X-CRM114-Status: GOOD ( 20.04 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org T24gTW9uLCAyMDIxLTExLTIyIGF0IDA5OjU3IC0wNTAwLCBTdGV2ZW4gUm9zdGVkdCB3cm90ZToK PiBPbiBGcmksIDE5IE5vdiAyMDIxIDExOjIxOjE3ICswMTAwCj4gTmljb2xhcyBTYWVueiBKdWxp ZW5uZSA8bnNhZW56anVAcmVkaGF0LmNvbT4gd3JvdGU6Cj4gCj4gPiArLyogU1BEWC1MaWNlbnNl LUlkZW50aWZpZXI6IEdQTC0yLjAgKi8KPiA+ICsjaWZuZGVmIF9BU01fQVJNNjRfVFJBQ0VfQ0xP Q0tfSAo+ID4gKyNkZWZpbmUgX0FTTV9BUk02NF9UUkFDRV9DTE9DS19ICj4gPiArCj4gPiArI2lu Y2x1ZGUgPGxpbnV4L3R5cGVzLmg+Cj4gPiArCj4gPiArZXh0ZXJuIHU2NCBub3RyYWNlIHRyYWNl X2Nsb2NrX2FybTY0X2NudHZjdCh2b2lkKTsKPiA+ICsKPiA+ICsjIGRlZmluZSBBUkNIX1RSQUNF X0NMT0NLUyBcCj4gPiArCXsgdHJhY2VfY2xvY2tfYXJtNjRfY250dmN0LCAiY250dmN0IiwgLmlu X25zID0gMCB9LAo+ID4gKwo+ID4gKyNlbmRpZiAgLyogX0FTTV9BUk02NF9UUkFDRV9DTE9DS19I ICovCj4gCj4gU28gdGhpcyB3aWxsIGFwcGVhciBhcyBhIHVzYWJsZSBjbG9jayBpbiB0cmFjZS1j bWQuCj4gCj4gQW5kIHNpbmNlIHRoaXMgd2lsbCBiZSB1c2VkIHRvIHN5bmNocm9uaXplIGJldHdl ZW4gaG9zdCBhbmQgZ3Vlc3QgbGlrZSB0aGUKPiB4ODZfdHNjIGlzIHVzZWQsIHRoYXQgbWVhbnMg dGhhdCB0cmFjZS1jbWQgbmVlZHMgdG8ga25vdyB0aGF0IHRoaXMgaXMgdGhlCj4gYW4gYXJjaCAi Q1BVIiBjbG9jay4gSSB3b25kZXIgaWYgd2Ugc2hvdWxkIHJlbmFtZSB4ODZfY2xvY2sgKG9yIGF0 IGxlYXN0Cj4gbWFrZSBpdCBhbiBhbGlhcykgdG8gImt2bV9jbG9jayIuIFRoZW4gd2UgY2FuIGhh dmUgdHJhY2UtY21kIHVzZQo+ICJrdm1fY2xvY2siIGFzIHRoZSBjbG9jayBmb3Igc3luY2hyb25p emF0aW9uIGJldHdlZW4gaG9zdCBhbmQgZ3Vlc3RzIGZvcgo+IGFsbCBhcmNoaXRlY3R1cmVzPwo+ Cj4gVGhpbmtpbmcgYWJvdXQgdGhpcywgaW5zdGVhZCBvZiByZW5hbWluZyBpdCwgSSdsbCBhZGQg Y29kZSB0byBjcmVhdGUgYW4KPiBhbGlhcyB0byB0aGVzZSBjbG9ja3MuIFRoZW4gZXZlcnkgYXJj aCBjYW4gcGljayB3aGF0IGNsb2NrIGlzIHVzZWQgdGhhdCBpcwo+IHRoZSBzYW1lIGJldHdlZW4g aG9zdHMgYW5kIGd1ZXN0cyBzdWNoIHRoYXQgdXNlciBzcGFjZSB0b29saW5nIGRvZXNuJ3QgaGF2 ZQo+IHRvIGtlZXAgYSBkYXRhYmFzZSBvZiB3aGF0IGNsb2NrcyBhcmUgdXNlZCBmb3Igc3luY2hy b25pemF0aW9uIGJldHdlZW4KPiBob3N0cyBhbmQgZ3Vlc3RzIGZvciBlYWNoIGFyY2guCj4gCj4g SSdsbCBnbyBhZGQgc29tZSBjb2RlIDstKQoKSSByZWFsbHkgbGlrZSB0aGUgaWRlYSwgcGxlYXNl IGtlZXAgbWUgaW4gdGhlIGxvb3AgaWYgeW91IHNlbmQgc29tZXRoaW5nCnVwc3RyZWFtLgoKLS0g Ck5pY29sw6FzIFPDoWVuegoKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fCmxpbnV4LWFybS1rZXJuZWwgbWFpbGluZyBsaXN0CmxpbnV4LWFybS1rZXJuZWxA bGlzdHMuaW5mcmFkZWFkLm9yZwpodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xp c3RpbmZvL2xpbnV4LWFybS1rZXJuZWwK