From mboxrd@z Thu Jan 1 00:00:00 1970 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 756FB192CE9; Wed, 13 Mar 2024 17:02:57 +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=1710349377; cv=none; b=IfMNePATXXumktPm3RyGJSRygNXQEwFEvdfOxiBtum+Y7Jw/iqR9JxPH5FA3lzom0J6a9KSp/8+ufg8IKjPwpq3tTYIB2w8J4lzjicKPVA/LfwSE6s3psB5RxUpqGbaz/ObLpZb6wyQhoAzUtKTyILt3zC6skNKu1NbzyEsxmR8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1710349377; c=relaxed/simple; bh=c5pTaOVu83YktTpWX4QuZjK6vrmSaLm723FjbgRgv04=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Qv85epDCD7ET9gfng31huqn1CcADd1z/zfRAYccPXLGYF/LSGmLMj3XauxjWgWB0e+3yjxBvhcBBk9Q3QL4N9ECo31967TzbKulCJGrSjTixDYyUMp+KADm4WbjmfWlzrWHcyLEqgBJXluwk5H52fQW5TYY461f9EaTR2xkfJdM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=X80cQ9df; 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="X80cQ9df" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 84642C433F1; Wed, 13 Mar 2024 17:02:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1710349377; bh=c5pTaOVu83YktTpWX4QuZjK6vrmSaLm723FjbgRgv04=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=X80cQ9dfn5jctGEEerEefp7yor3hKTcq0G1iV6SNeU/wyxZxk9DFF3/4/fxPcmy4d PTQB+N4qaXtrCBlrcRCabsYtW+VbZAfLKll1fqJ/ZinpnwRh41hRZdQ11PnDIH7xCS Tl8CkRjHirD2WCpyEZskIygKZTj26KroMlC7nVmNQl+NRUaoLVsqJHU2/fW5Ig6zIw e5lIAuQ13fpn7w8UXyi8VxIxElzAPvSz9UGa7aiqoJhnyFDosT9Nid3LBbktDdIGm4 euEtILFIRxUgqaUBoIhag88nAKf5quYsHLS7lUnJWeNBtWiqIhYdxuOvYh9AJdnOoJ uNrRciaGxsuig== 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 5.4 39/51] getrusage: add the "signal_struct *sig" local variable Date: Wed, 13 Mar 2024 13:02:00 -0400 Message-ID: <20240313170212.616443-40-sashal@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240313170212.616443-1-sashal@kernel.org> References: <20240313170212.616443-1-sashal@kernel.org> Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-KernelTest-Patch: http://kernel.org/pub/linux/kernel/v5.x/stable-review/patch-5.4.272-rc1.gz X-KernelTest-Tree: git://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git X-KernelTest-Branch: linux-5.4.y X-KernelTest-Patches: git://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git X-KernelTest-Version: 5.4.272-rc1 X-KernelTest-Deadline: 2024-03-15T17:02+00:00 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit 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 bc3cd0ef894e6..76b601d56c027 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -1712,6 +1712,7 @@ void getrusage(struct task_struct *p, int who, struct rusage *r) unsigned long flags; u64 tgutime, tgstime, utime, stime; unsigned long maxrss = 0; + struct signal_struct *sig = p->signal; memset((char *)r, 0, sizeof (*r)); utime = stime = 0; @@ -1719,7 +1720,7 @@ void getrusage(struct task_struct *p, int who, struct rusage *r) if (who == RUSAGE_THREAD) { task_cputime_adjusted(current, &utime, &stime); accumulate_thread_rusage(p, r); - maxrss = p->signal->maxrss; + maxrss = sig->maxrss; goto out; } @@ -1729,15 +1730,15 @@ void getrusage(struct task_struct *p, int who, struct rusage *r) switch (who) { case RUSAGE_BOTH: case RUSAGE_CHILDREN: - utime = p->signal->cutime; - stime = p->signal->cstime; - r->ru_nvcsw = p->signal->cnvcsw; - r->ru_nivcsw = p->signal->cnivcsw; - r->ru_minflt = p->signal->cmin_flt; - r->ru_majflt = p->signal->cmaj_flt; - r->ru_inblock = p->signal->cinblock; - r->ru_oublock = p->signal->coublock; - maxrss = p->signal->cmaxrss; + utime = sig->cutime; + stime = sig->cstime; + r->ru_nvcsw = sig->cnvcsw; + r->ru_nivcsw = sig->cnivcsw; + r->ru_minflt = sig->cmin_flt; + r->ru_majflt = sig->cmaj_flt; + r->ru_inblock = sig->cinblock; + r->ru_oublock = sig->coublock; + maxrss = sig->cmaxrss; if (who == RUSAGE_CHILDREN) break; @@ -1747,14 +1748,14 @@ void getrusage(struct task_struct *p, int who, struct rusage *r) thread_group_cputime_adjusted(p, &tgutime, &tgstime); utime += tgutime; stime += tgstime; - r->ru_nvcsw += p->signal->nvcsw; - r->ru_nivcsw += p->signal->nivcsw; - r->ru_minflt += p->signal->min_flt; - r->ru_majflt += p->signal->maj_flt; - r->ru_inblock += p->signal->inblock; - r->ru_oublock += p->signal->oublock; - if (maxrss < p->signal->maxrss) - maxrss = p->signal->maxrss; + r->ru_nvcsw += sig->nvcsw; + r->ru_nivcsw += sig->nivcsw; + r->ru_minflt += sig->min_flt; + r->ru_majflt += sig->maj_flt; + r->ru_inblock += sig->inblock; + r->ru_oublock += sig->oublock; + if (maxrss < sig->maxrss) + maxrss = sig->maxrss; t = p; do { accumulate_thread_rusage(t, r); -- 2.43.0