From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (qmail 101124 invoked by alias); 12 Apr 2019 17:41:37 -0000 Mailing-List: contact systemtap-help@sourceware.org; run by ezmlm Precedence: bulk List-Id: List-Subscribe: List-Post: List-Help: , Sender: systemtap-owner@sourceware.org Received: (qmail 101029 invoked by uid 48); 12 Apr 2019 17:41:31 -0000 From: "me at serhei dot io" To: systemtap@sourceware.org Subject: [Bug bpf/22312] bpf: global variable and statistics aggregate locking Date: Fri, 12 Apr 2019 17:41:00 -0000 X-Bugzilla-Reason: AssignedTo X-Bugzilla-Type: changed X-Bugzilla-Watch-Reason: None X-Bugzilla-Product: systemtap X-Bugzilla-Component: bpf X-Bugzilla-Version: unspecified X-Bugzilla-Keywords: X-Bugzilla-Severity: normal X-Bugzilla-Who: me at serhei dot io X-Bugzilla-Status: NEW X-Bugzilla-Resolution: X-Bugzilla-Priority: P2 X-Bugzilla-Assigned-To: systemtap at sourceware dot org X-Bugzilla-Target-Milestone: --- X-Bugzilla-Flags: X-Bugzilla-Changed-Fields: Message-ID: In-Reply-To: References: Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable X-Bugzilla-URL: http://sourceware.org/bugzilla/ Auto-Submitted: auto-generated MIME-Version: 1.0 X-SW-Source: 2019-q2/txt/msg00029.txt.bz2 https://sourceware.org/bugzilla/show_bug.cgi?id=3D22312 --- Comment #4 from Serhei Makarov --- Newer kernels will include a spinlock primitive: https://github.com/torvalds/linux/blob/master/include/uapi/linux/bpf.h#L2346 On older kernels we may either use the XADD method or just print a warning = and skip locking altogether. --=20 You are receiving this mail because: You are the assignee for the bug.