rdtgroup.c (b045c215866393419fb960432ed6be69a0113ee1) rdtgroup.c (781096d971dfe3c5f9401a300bdb0b148a600584)
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * User interface for Resource Allocation in Resource Director Technology(RDT)
4 *
5 * Copyright (C) 2016 Intel Corporation
6 *
7 * Author: Fenghua Yu <fenghua.yu@intel.com>
8 *

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1884
1885 if (r->rid == RDT_RESOURCE_L2)
1886 l2_qos_cfg_update(&hw_res->cdp_enabled);
1887
1888 if (r->rid == RDT_RESOURCE_L3)
1889 l3_qos_cfg_update(&hw_res->cdp_enabled);
1890}
1891
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * User interface for Resource Allocation in Resource Director Technology(RDT)
4 *
5 * Copyright (C) 2016 Intel Corporation
6 *
7 * Author: Fenghua Yu <fenghua.yu@intel.com>
8 *

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1884
1885 if (r->rid == RDT_RESOURCE_L2)
1886 l2_qos_cfg_update(&hw_res->cdp_enabled);
1887
1888 if (r->rid == RDT_RESOURCE_L3)
1889 l3_qos_cfg_update(&hw_res->cdp_enabled);
1890}
1891
1892static int mba_sc_domain_allocate(struct rdt_resource *r, struct rdt_domain *d)
1893{
1894 u32 num_closid = resctrl_arch_get_num_closid(r);
1895 int cpu = cpumask_any(&d->cpu_mask);
1896 int i;
1897
1898 d->mbps_val = kcalloc_node(num_closid, sizeof(*d->mbps_val),
1899 GFP_KERNEL, cpu_to_node(cpu));
1900 if (!d->mbps_val)
1901 return -ENOMEM;
1902
1903 for (i = 0; i < num_closid; i++)
1904 d->mbps_val[i] = MBA_MAX_MBPS;
1905
1906 return 0;
1907}
1908
1909static void mba_sc_domain_destroy(struct rdt_resource *r,
1910 struct rdt_domain *d)
1911{
1912 kfree(d->mbps_val);
1913 d->mbps_val = NULL;
1914}
1915
1892/*
1893 * MBA software controller is supported only if
1894 * MBM is supported and MBA is in linear scale.
1895 */
1896static bool supports_mba_mbps(void)
1897{
1898 struct rdt_resource *r = &rdt_resources_all[RDT_RESOURCE_MBA].r_resctrl;
1899
1900 return (is_mbm_local_enabled() &&
1901 r->alloc_capable && is_mba_linear());
1902}
1903
1904/*
1905 * Enable or disable the MBA software controller
1906 * which helps user specify bandwidth in MBps.
1907 */
1908static int set_mba_sc(bool mba_sc)
1909{
1910 struct rdt_resource *r = &rdt_resources_all[RDT_RESOURCE_MBA].r_resctrl;
1916/*
1917 * MBA software controller is supported only if
1918 * MBM is supported and MBA is in linear scale.
1919 */
1920static bool supports_mba_mbps(void)
1921{
1922 struct rdt_resource *r = &rdt_resources_all[RDT_RESOURCE_MBA].r_resctrl;
1923
1924 return (is_mbm_local_enabled() &&
1925 r->alloc_capable && is_mba_linear());
1926}
1927
1928/*
1929 * Enable or disable the MBA software controller
1930 * which helps user specify bandwidth in MBps.
1931 */
1932static int set_mba_sc(bool mba_sc)
1933{
1934 struct rdt_resource *r = &rdt_resources_all[RDT_RESOURCE_MBA].r_resctrl;
1935 u32 num_closid = resctrl_arch_get_num_closid(r);
1936 struct rdt_domain *d;
1937 int i;
1911
1912 if (!supports_mba_mbps() || mba_sc == is_mba_sc(r))
1913 return -EINVAL;
1914
1915 r->membw.mba_sc = mba_sc;
1916
1938
1939 if (!supports_mba_mbps() || mba_sc == is_mba_sc(r))
1940 return -EINVAL;
1941
1942 r->membw.mba_sc = mba_sc;
1943
1944 list_for_each_entry(d, &r->domains, list) {
1945 for (i = 0; i < num_closid; i++)
1946 d->mbps_val[i] = MBA_MAX_MBPS;
1947 }
1948
1917 return 0;
1918}
1919
1920static int cdp_enable(int level)
1921{
1922 struct rdt_resource *r_l = &rdt_resources_all[level].r_resctrl;
1923 int ret;
1924

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3242 kfree(d->mbm_total);
3243 kfree(d->mbm_local);
3244}
3245
3246void resctrl_offline_domain(struct rdt_resource *r, struct rdt_domain *d)
3247{
3248 lockdep_assert_held(&rdtgroup_mutex);
3249
1949 return 0;
1950}
1951
1952static int cdp_enable(int level)
1953{
1954 struct rdt_resource *r_l = &rdt_resources_all[level].r_resctrl;
1955 int ret;
1956

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3274 kfree(d->mbm_total);
3275 kfree(d->mbm_local);
3276}
3277
3278void resctrl_offline_domain(struct rdt_resource *r, struct rdt_domain *d)
3279{
3280 lockdep_assert_held(&rdtgroup_mutex);
3281
3282 if (supports_mba_mbps() && r->rid == RDT_RESOURCE_MBA)
3283 mba_sc_domain_destroy(r, d);
3284
3250 if (!r->mon_capable)
3251 return;
3252
3253 /*
3254 * If resctrl is mounted, remove all the
3255 * per domain monitor data directories.
3256 */
3257 if (static_branch_unlikely(&rdt_mon_enable_key))

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3306}
3307
3308int resctrl_online_domain(struct rdt_resource *r, struct rdt_domain *d)
3309{
3310 int err;
3311
3312 lockdep_assert_held(&rdtgroup_mutex);
3313
3285 if (!r->mon_capable)
3286 return;
3287
3288 /*
3289 * If resctrl is mounted, remove all the
3290 * per domain monitor data directories.
3291 */
3292 if (static_branch_unlikely(&rdt_mon_enable_key))

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3341}
3342
3343int resctrl_online_domain(struct rdt_resource *r, struct rdt_domain *d)
3344{
3345 int err;
3346
3347 lockdep_assert_held(&rdtgroup_mutex);
3348
3349 if (supports_mba_mbps() && r->rid == RDT_RESOURCE_MBA)
3350 /* RDT_RESOURCE_MBA is never mon_capable */
3351 return mba_sc_domain_allocate(r, d);
3352
3314 if (!r->mon_capable)
3315 return 0;
3316
3317 err = domain_setup_mon_state(r, d);
3318 if (err)
3319 return err;
3320
3321 if (is_mbm_enabled()) {

--- 81 unchanged lines hidden --- 		3353 if (!r->mon_capable)
3354 return 0;
3355
3356 err = domain_setup_mon_state(r, d);
3357 if (err)
3358 return err;
3359
3360 if (is_mbm_enabled()) {

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