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From: Namhyung Kim <namhyung@kernel.org>
To: peterz@infradead.org, mingo@redhat.com, acme@kernel.org, 
 Kuan-Wei Chiu <visitorckw@gmail.com>
Cc: mark.rutland@arm.com, alexander.shishkin@linux.intel.com, 
 jolsa@kernel.org, irogers@google.com, adrian.hunter@intel.com, 
 kan.liang@linux.intel.com, Ching-Chun Huang <jserv@ccns.ncku.edu.tw>, 
 Chun-Ying Huang <chuang@cs.nycu.edu.tw>, linux-perf-users@vger.kernel.org, 
 linux-kernel@vger.kernel.org, James Clark <james.clark@linaro.org>, 
 stable@vger.kernel.org
In-Reply-To: <20250116110842.4087530-1-visitorckw@gmail.com>
References: <20250116110842.4087530-1-visitorckw@gmail.com>
Subject: Re: [PATCH v3] perf bench: Fix undefined behavior in cmpworker()
Message-Id: <173739761304.3950752.5970208244862437457.b4-ty@kernel.org>
Date: Mon, 20 Jan 2025 10:26:53 -0800
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On Thu, 16 Jan 2025 19:08:42 +0800, Kuan-Wei Chiu wrote:

> The comparison function cmpworker() violates the C standard's
> requirements for qsort() comparison functions, which mandate symmetry
> and transitivity:
> 
> Symmetry: If x < y, then y > x.
> Transitivity: If x < y and y < z, then x < z.
> 
> [...]

Applied to perf-tools-next, thanks!

Best regards,
Namhyung