diff options
Diffstat (limited to 'pkgs/os-specific/linux/kernel/cpu-cgroup-v2-patches/4.7.patch')
-rw-r--r-- | pkgs/os-specific/linux/kernel/cpu-cgroup-v2-patches/4.7.patch | 407 |
1 files changed, 0 insertions, 407 deletions
diff --git a/pkgs/os-specific/linux/kernel/cpu-cgroup-v2-patches/4.7.patch b/pkgs/os-specific/linux/kernel/cpu-cgroup-v2-patches/4.7.patch deleted file mode 100644 index 74dae740e37c..000000000000 --- a/pkgs/os-specific/linux/kernel/cpu-cgroup-v2-patches/4.7.patch +++ /dev/null @@ -1,407 +0,0 @@ -commit 0d966df508ef4d6c0b1baae9e369f4fb0d3e10af -Author: Tejun Heo <tj@kernel.org> -Date: Fri Mar 11 07:31:23 2016 -0500 - - sched: Misc preps for cgroup unified hierarchy interface - - Make the following changes in preparation for the cpu controller - interface implementation for the unified hierarchy. This patch - doesn't cause any functional differences. - - * s/cpu_stats_show()/cpu_cfs_stats_show()/ - - * s/cpu_files/cpu_legacy_files/ - - * Separate out cpuacct_stats_read() from cpuacct_stats_show(). While - at it, remove pointless cpuacct_stat_desc[] array. - - Signed-off-by: Tejun Heo <tj@kernel.org> - Cc: Ingo Molnar <mingo@redhat.com> - Cc: Peter Zijlstra <peterz@infradead.org> - Cc: Li Zefan <lizefan@huawei.com> - Cc: Johannes Weiner <hannes@cmpxchg.org> - -diff --git a/kernel/sched/core.c b/kernel/sched/core.c -index 97ee9ac..c148dfe 100644 ---- a/kernel/sched/core.c -+++ b/kernel/sched/core.c -@@ -8482,7 +8482,7 @@ static int __cfs_schedulable(struct task_group *tg, u64 period, u64 quota) - return ret; - } - --static int cpu_stats_show(struct seq_file *sf, void *v) -+static int cpu_cfs_stats_show(struct seq_file *sf, void *v) - { - struct task_group *tg = css_tg(seq_css(sf)); - struct cfs_bandwidth *cfs_b = &tg->cfs_bandwidth; -@@ -8522,7 +8522,7 @@ static u64 cpu_rt_period_read_uint(struct cgroup_subsys_state *css, - } - #endif /* CONFIG_RT_GROUP_SCHED */ - --static struct cftype cpu_files[] = { -+static struct cftype cpu_legacy_files[] = { - #ifdef CONFIG_FAIR_GROUP_SCHED - { - .name = "shares", -@@ -8543,7 +8543,7 @@ static struct cftype cpu_files[] = { - }, - { - .name = "stat", -- .seq_show = cpu_stats_show, -+ .seq_show = cpu_cfs_stats_show, - }, - #endif - #ifdef CONFIG_RT_GROUP_SCHED -@@ -8568,7 +8568,7 @@ struct cgroup_subsys cpu_cgrp_subsys = { - .fork = cpu_cgroup_fork, - .can_attach = cpu_cgroup_can_attach, - .attach = cpu_cgroup_attach, -- .legacy_cftypes = cpu_files, -+ .legacy_cftypes = cpu_legacy_files, - .early_init = true, - }; - -diff --git a/kernel/sched/cpuacct.c b/kernel/sched/cpuacct.c -index 41f85c4..3eb9eda 100644 ---- a/kernel/sched/cpuacct.c -+++ b/kernel/sched/cpuacct.c -@@ -242,36 +242,33 @@ static int cpuacct_percpu_seq_show(struct seq_file *m, void *V) - return __cpuacct_percpu_seq_show(m, CPUACCT_USAGE_NRUSAGE); - } - --static const char * const cpuacct_stat_desc[] = { -- [CPUACCT_STAT_USER] = "user", -- [CPUACCT_STAT_SYSTEM] = "system", --}; -- --static int cpuacct_stats_show(struct seq_file *sf, void *v) -+static void cpuacct_stats_read(struct cpuacct *ca, u64 *userp, u64 *sysp) - { -- struct cpuacct *ca = css_ca(seq_css(sf)); - int cpu; -- s64 val = 0; - -+ *userp = 0; - for_each_possible_cpu(cpu) { - struct kernel_cpustat *kcpustat = per_cpu_ptr(ca->cpustat, cpu); -- val += kcpustat->cpustat[CPUTIME_USER]; -- val += kcpustat->cpustat[CPUTIME_NICE]; -+ *userp += kcpustat->cpustat[CPUTIME_USER]; -+ *userp += kcpustat->cpustat[CPUTIME_NICE]; - } -- val = cputime64_to_clock_t(val); -- seq_printf(sf, "%s %lld\n", cpuacct_stat_desc[CPUACCT_STAT_USER], val); - -- val = 0; -+ *sysp = 0; - for_each_possible_cpu(cpu) { - struct kernel_cpustat *kcpustat = per_cpu_ptr(ca->cpustat, cpu); -- val += kcpustat->cpustat[CPUTIME_SYSTEM]; -- val += kcpustat->cpustat[CPUTIME_IRQ]; -- val += kcpustat->cpustat[CPUTIME_SOFTIRQ]; -+ *sysp += kcpustat->cpustat[CPUTIME_SYSTEM]; -+ *sysp += kcpustat->cpustat[CPUTIME_IRQ]; -+ *sysp += kcpustat->cpustat[CPUTIME_SOFTIRQ]; - } -+} - -- val = cputime64_to_clock_t(val); -- seq_printf(sf, "%s %lld\n", cpuacct_stat_desc[CPUACCT_STAT_SYSTEM], val); -+static int cpuacct_stats_show(struct seq_file *sf, void *v) -+{ -+ cputime64_t user, sys; - -+ cpuacct_stats_read(css_ca(seq_css(sf)), &user, &sys); -+ seq_printf(sf, "user %lld\n", cputime64_to_clock_t(user)); -+ seq_printf(sf, "system %lld\n", cputime64_to_clock_t(sys)); - return 0; - } - - -commit ed6d93036ec930cb774da10b7c87f67905ce71f1 -Author: Tejun Heo <tj@kernel.org> -Date: Fri Mar 11 07:31:23 2016 -0500 - - sched: Implement interface for cgroup unified hierarchy - - While the cpu controller doesn't have any functional problems, there - are a couple interface issues which can be addressed in the v2 - interface. - - * cpuacct being a separate controller. This separation is artificial - and rather pointless as demonstrated by most use cases co-mounting - the two controllers. It also forces certain information to be - accounted twice. - - * Use of different time units. Writable control knobs use - microseconds, some stat fields use nanoseconds while other cpuacct - stat fields use centiseconds. - - * Control knobs which can't be used in the root cgroup still show up - in the root. - - * Control knob names and semantics aren't consistent with other - controllers. - - This patchset implements cpu controller's interface on the unified - hierarchy which adheres to the controller file conventions described - in Documentation/cgroups/unified-hierarchy.txt. Overall, the - following changes are made. - - * cpuacct is implictly enabled and disabled by cpu and its information - is reported through "cpu.stat" which now uses microseconds for all - time durations. All time duration fields now have "_usec" appended - to them for clarity. While this doesn't solve the double accounting - immediately, once majority of users switch to v2, cpu can directly - account and report the relevant stats and cpuacct can be disabled on - the unified hierarchy. - - Note that cpuacct.usage_percpu is currently not included in - "cpu.stat". If this information is actually called for, it can be - added later. - - * "cpu.shares" is replaced with "cpu.weight" and operates on the - standard scale defined by CGROUP_WEIGHT_MIN/DFL/MAX (1, 100, 10000). - The weight is scaled to scheduler weight so that 100 maps to 1024 - and the ratio relationship is preserved - if weight is W and its - scaled value is S, W / 100 == S / 1024. While the mapped range is a - bit smaller than the orignal scheduler weight range, the dead zones - on both sides are relatively small and covers wider range than the - nice value mappings. This file doesn't make sense in the root - cgroup and isn't create on root. - - * "cpu.cfs_quota_us" and "cpu.cfs_period_us" are replaced by "cpu.max" - which contains both quota and period. - - * "cpu.rt_runtime_us" and "cpu.rt_period_us" are replaced by - "cpu.rt.max" which contains both runtime and period. - - v2: cpu_stats_show() was incorrectly using CONFIG_FAIR_GROUP_SCHED for - CFS bandwidth stats and also using raw division for u64. Use - CONFIG_CFS_BANDWITH and do_div() instead. - - The semantics of "cpu.rt.max" is not fully decided yet. Dropped - for now. - - Signed-off-by: Tejun Heo <tj@kernel.org> - Cc: Ingo Molnar <mingo@redhat.com> - Cc: Peter Zijlstra <peterz@infradead.org> - Cc: Li Zefan <lizefan@huawei.com> - Cc: Johannes Weiner <hannes@cmpxchg.org> - -diff --git a/kernel/sched/core.c b/kernel/sched/core.c -index c148dfe..7bba2c5 100644 ---- a/kernel/sched/core.c -+++ b/kernel/sched/core.c -@@ -8561,6 +8561,139 @@ static struct cftype cpu_legacy_files[] = { - { } /* terminate */ - }; - -+static int cpu_stats_show(struct seq_file *sf, void *v) -+{ -+ cpuacct_cpu_stats_show(sf); -+ -+#ifdef CONFIG_CFS_BANDWIDTH -+ { -+ struct task_group *tg = css_tg(seq_css(sf)); -+ struct cfs_bandwidth *cfs_b = &tg->cfs_bandwidth; -+ u64 throttled_usec; -+ -+ throttled_usec = cfs_b->throttled_time; -+ do_div(throttled_usec, NSEC_PER_USEC); -+ -+ seq_printf(sf, "nr_periods %d\n" -+ "nr_throttled %d\n" -+ "throttled_usec %llu\n", -+ cfs_b->nr_periods, cfs_b->nr_throttled, -+ throttled_usec); -+ } -+#endif -+ return 0; -+} -+ -+#ifdef CONFIG_FAIR_GROUP_SCHED -+static u64 cpu_weight_read_u64(struct cgroup_subsys_state *css, -+ struct cftype *cft) -+{ -+ struct task_group *tg = css_tg(css); -+ u64 weight = scale_load_down(tg->shares); -+ -+ return DIV_ROUND_CLOSEST_ULL(weight * CGROUP_WEIGHT_DFL, 1024); -+} -+ -+static int cpu_weight_write_u64(struct cgroup_subsys_state *css, -+ struct cftype *cftype, u64 weight) -+{ -+ /* -+ * cgroup weight knobs should use the common MIN, DFL and MAX -+ * values which are 1, 100 and 10000 respectively. While it loses -+ * a bit of range on both ends, it maps pretty well onto the shares -+ * value used by scheduler and the round-trip conversions preserve -+ * the original value over the entire range. -+ */ -+ if (weight < CGROUP_WEIGHT_MIN || weight > CGROUP_WEIGHT_MAX) -+ return -ERANGE; -+ -+ weight = DIV_ROUND_CLOSEST_ULL(weight * 1024, CGROUP_WEIGHT_DFL); -+ -+ return sched_group_set_shares(css_tg(css), scale_load(weight)); -+} -+#endif -+ -+static void __maybe_unused cpu_period_quota_print(struct seq_file *sf, -+ long period, long quota) -+{ -+ if (quota < 0) -+ seq_puts(sf, "max"); -+ else -+ seq_printf(sf, "%ld", quota); -+ -+ seq_printf(sf, " %ld\n", period); -+} -+ -+/* caller should put the current value in *@periodp before calling */ -+static int __maybe_unused cpu_period_quota_parse(char *buf, -+ u64 *periodp, u64 *quotap) -+{ -+ char tok[21]; /* U64_MAX */ -+ -+ if (!sscanf(buf, "%s %llu", tok, periodp)) -+ return -EINVAL; -+ -+ *periodp *= NSEC_PER_USEC; -+ -+ if (sscanf(tok, "%llu", quotap)) -+ *quotap *= NSEC_PER_USEC; -+ else if (!strcmp(tok, "max")) -+ *quotap = RUNTIME_INF; -+ else -+ return -EINVAL; -+ -+ return 0; -+} -+ -+#ifdef CONFIG_CFS_BANDWIDTH -+static int cpu_max_show(struct seq_file *sf, void *v) -+{ -+ struct task_group *tg = css_tg(seq_css(sf)); -+ -+ cpu_period_quota_print(sf, tg_get_cfs_period(tg), tg_get_cfs_quota(tg)); -+ return 0; -+} -+ -+static ssize_t cpu_max_write(struct kernfs_open_file *of, -+ char *buf, size_t nbytes, loff_t off) -+{ -+ struct task_group *tg = css_tg(of_css(of)); -+ u64 period = tg_get_cfs_period(tg); -+ u64 quota; -+ int ret; -+ -+ ret = cpu_period_quota_parse(buf, &period, "a); -+ if (!ret) -+ ret = tg_set_cfs_bandwidth(tg, period, quota); -+ return ret ?: nbytes; -+} -+#endif -+ -+static struct cftype cpu_files[] = { -+ { -+ .name = "stat", -+ .flags = CFTYPE_NOT_ON_ROOT, -+ .seq_show = cpu_stats_show, -+ }, -+#ifdef CONFIG_FAIR_GROUP_SCHED -+ { -+ .name = "weight", -+ .flags = CFTYPE_NOT_ON_ROOT, -+ .read_u64 = cpu_weight_read_u64, -+ .write_u64 = cpu_weight_write_u64, -+ }, -+#endif -+#ifdef CONFIG_CFS_BANDWIDTH -+ { -+ .name = "max", -+ .flags = CFTYPE_NOT_ON_ROOT, -+ .seq_show = cpu_max_show, -+ .write = cpu_max_write, -+ }, -+#endif -+ { } /* terminate */ -+}; -+ - struct cgroup_subsys cpu_cgrp_subsys = { - .css_alloc = cpu_cgroup_css_alloc, - .css_released = cpu_cgroup_css_released, -@@ -8569,7 +8702,15 @@ struct cgroup_subsys cpu_cgrp_subsys = { - .can_attach = cpu_cgroup_can_attach, - .attach = cpu_cgroup_attach, - .legacy_cftypes = cpu_legacy_files, -+ .dfl_cftypes = cpu_files, - .early_init = true, -+#ifdef CONFIG_CGROUP_CPUACCT -+ /* -+ * cpuacct is enabled together with cpu on the unified hierarchy -+ * and its stats are reported through "cpu.stat". -+ */ -+ .depends_on = 1 << cpuacct_cgrp_id, -+#endif - }; - - #endif /* CONFIG_CGROUP_SCHED */ -diff --git a/kernel/sched/cpuacct.c b/kernel/sched/cpuacct.c -index 3eb9eda..7a02d26 100644 ---- a/kernel/sched/cpuacct.c -+++ b/kernel/sched/cpuacct.c -@@ -305,6 +305,30 @@ static struct cftype files[] = { - { } /* terminate */ - }; - -+/* used to print cpuacct stats in cpu.stat on the unified hierarchy */ -+void cpuacct_cpu_stats_show(struct seq_file *sf) -+{ -+ struct cgroup_subsys_state *css; -+ u64 usage, user, sys; -+ -+ css = cgroup_get_e_css(seq_css(sf)->cgroup, &cpuacct_cgrp_subsys); -+ -+ usage = cpuusage_read(css, seq_cft(sf)); -+ cpuacct_stats_read(css_ca(css), &user, &sys); -+ -+ user *= TICK_NSEC; -+ sys *= TICK_NSEC; -+ do_div(usage, NSEC_PER_USEC); -+ do_div(user, NSEC_PER_USEC); -+ do_div(sys, NSEC_PER_USEC); -+ -+ seq_printf(sf, "usage_usec %llu\n" -+ "user_usec %llu\n" -+ "system_usec %llu\n", usage, user, sys); -+ -+ css_put(css); -+} -+ - /* - * charge this task's execution time to its accounting group. - * -diff --git a/kernel/sched/cpuacct.h b/kernel/sched/cpuacct.h -index ba72807..ddf7af4 100644 ---- a/kernel/sched/cpuacct.h -+++ b/kernel/sched/cpuacct.h -@@ -2,6 +2,7 @@ - - extern void cpuacct_charge(struct task_struct *tsk, u64 cputime); - extern void cpuacct_account_field(struct task_struct *tsk, int index, u64 val); -+extern void cpuacct_cpu_stats_show(struct seq_file *sf); - - #else - -@@ -14,4 +15,8 @@ cpuacct_account_field(struct task_struct *tsk, int index, u64 val) - { - } - -+static inline void cpuacct_cpu_stats_show(struct seq_file *sf) -+{ -+} -+ - #endif |