From nobody Mon Feb 9 03:34:41 2026 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CE2FD1A1E07; Wed, 13 Mar 2024 17:05:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710349514; cv=none; b=NpiTPc/Ay3TssordR2GE4fs/kqokEBqYhJVM2YMIYr2UFZ99HMPLRPJ95HkXjTdIZAiVEJ77ZaLNPwLZGJENCh1cnHqrqbfy9zjHKwMhU2CC2GlPEBEg8qsloD88e7XNEgey7Gm1KyTTABNStw5euU0B4WPWVa5DbqdByC/bLXw= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710349514; c=relaxed/simple; bh=p1EZa2ZgHDmiucXAq91UYoVHVTEcoPAIJ0eMj0t95P8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ZWdboLNCygqMkDk1unJFQPIJVb1GBXDtLuvCdgNXScjNzA9azHMBKKu7CVOY60j+Zc9sDrGQX4/koy0CDQY4RKDGi97I7FKmWZY6II1lRl/jupdQytXnuaLBZJ76bfRGfV6gLoK0hmQo+9tI2c1tc0VyNG3u+qZhXJWhzRVLyeM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=tihd3/Wd; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="tihd3/Wd" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CDB6CC433C7; Wed, 13 Mar 2024 17:05:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1710349514; bh=p1EZa2ZgHDmiucXAq91UYoVHVTEcoPAIJ0eMj0t95P8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=tihd3/Wd5w3HEQ/5+u51K906yqOF7/LZFZFCTU9m7rQ+AZo1ufcIW0s+RP10FEe5l C7vOPYVBDwGRzaKEAKeQmhLMqE0nqLO1IOBzfLNN7hX/p276jJdKuf4tXFs5zmkwb1 Ts9PKjKEuaMRjzgzQFWV55GYZbxkkttkJZ1zUCkVxL4ogdMpi+yB8dPXPA6auONa6E HD3T+Ei5XslOJ3n1yVCR4pjvrjpCTZ+m0dlZ9ZUHl6T59/R9Tu1q2AxTIsA5LYi7QL XZxJDXhWPAvPV7xXaYg9XycHh/zHy9IE3w75Z9mhGT6OcAkl12WK/JyVlPRKqjTCMH UPFnwRWIhnA2g== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Oleg Nesterov , "Eric W . Biederman" , Andrew Morton , Sasha Levin Subject: [PATCH 4.19 33/41] getrusage: add the "signal_struct *sig" local variable Date: Wed, 13 Mar 2024 13:04:27 -0400 Message-ID: <20240313170435.616724-34-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240313170435.616724-1-sashal@kernel.org> References: <20240313170435.616724-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-KernelTest-Patch: http://kernel.org/pub/linux/kernel/v4.x/stable-review/patch-4.19.310-rc1.gz X-KernelTest-Tree: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git X-KernelTest-Branch: linux-4.19.y X-KernelTest-Patches: git://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git X-KernelTest-Version: 4.19.310-rc1 X-KernelTest-Deadline: 2024-03-15T17:04+00:00 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Oleg Nesterov [ Upstream commit c7ac8231ace9b07306d0299969e42073b189c70a ] No functional changes, cleanup/preparation. Link: https://lkml.kernel.org/r/20230909172554.GA20441@redhat.com Signed-off-by: Oleg Nesterov Cc: Eric W. Biederman Signed-off-by: Andrew Morton Stable-dep-of: daa694e41375 ("getrusage: move thread_group_cputime_adjusted= () outside of lock_task_sighand()") Signed-off-by: Sasha Levin --- kernel/sys.c | 37 +++++++++++++++++++------------------ 1 file changed, 19 insertions(+), 18 deletions(-) diff --git a/kernel/sys.c b/kernel/sys.c index e18bef5a8f9f5..d0d4f4c586518 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -1718,6 +1718,7 @@ void getrusage(struct task_struct *p, int who, struct= rusage *r) unsigned long flags; u64 tgutime, tgstime, utime, stime; unsigned long maxrss =3D 0; + struct signal_struct *sig =3D p->signal; =20 memset((char *)r, 0, sizeof (*r)); utime =3D stime =3D 0; @@ -1725,7 +1726,7 @@ void getrusage(struct task_struct *p, int who, struct= rusage *r) if (who =3D=3D RUSAGE_THREAD) { task_cputime_adjusted(current, &utime, &stime); accumulate_thread_rusage(p, r); - maxrss =3D p->signal->maxrss; + maxrss =3D sig->maxrss; goto out; } =20 @@ -1735,15 +1736,15 @@ void getrusage(struct task_struct *p, int who, stru= ct rusage *r) switch (who) { case RUSAGE_BOTH: case RUSAGE_CHILDREN: - utime =3D p->signal->cutime; - stime =3D p->signal->cstime; - r->ru_nvcsw =3D p->signal->cnvcsw; - r->ru_nivcsw =3D p->signal->cnivcsw; - r->ru_minflt =3D p->signal->cmin_flt; - r->ru_majflt =3D p->signal->cmaj_flt; - r->ru_inblock =3D p->signal->cinblock; - r->ru_oublock =3D p->signal->coublock; - maxrss =3D p->signal->cmaxrss; + utime =3D sig->cutime; + stime =3D sig->cstime; + r->ru_nvcsw =3D sig->cnvcsw; + r->ru_nivcsw =3D sig->cnivcsw; + r->ru_minflt =3D sig->cmin_flt; + r->ru_majflt =3D sig->cmaj_flt; + r->ru_inblock =3D sig->cinblock; + r->ru_oublock =3D sig->coublock; + maxrss =3D sig->cmaxrss; =20 if (who =3D=3D RUSAGE_CHILDREN) break; @@ -1752,14 +1753,14 @@ void getrusage(struct task_struct *p, int who, stru= ct rusage *r) thread_group_cputime_adjusted(p, &tgutime, &tgstime); utime +=3D tgutime; stime +=3D tgstime; - r->ru_nvcsw +=3D p->signal->nvcsw; - r->ru_nivcsw +=3D p->signal->nivcsw; - r->ru_minflt +=3D p->signal->min_flt; - r->ru_majflt +=3D p->signal->maj_flt; - r->ru_inblock +=3D p->signal->inblock; - r->ru_oublock +=3D p->signal->oublock; - if (maxrss < p->signal->maxrss) - maxrss =3D p->signal->maxrss; + r->ru_nvcsw +=3D sig->nvcsw; + r->ru_nivcsw +=3D sig->nivcsw; + r->ru_minflt +=3D sig->min_flt; + r->ru_majflt +=3D sig->maj_flt; + r->ru_inblock +=3D sig->inblock; + r->ru_oublock +=3D sig->oublock; + if (maxrss < sig->maxrss) + maxrss =3D sig->maxrss; t =3D p; do { accumulate_thread_rusage(t, r); --=20 2.43.0