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(unknown [109.105.118.124]) by epsmtip1.samsung.com (KnoxPortal) with ESMTPA id 20230928023009epsmtip18196df64eb77d978dfc95071ab3bc7d8~I7ybU1qZW1182111821epsmtip1F; Thu, 28 Sep 2023 02:30:09 +0000 (GMT) From: Xiaobing Li To: mingo@redhat.com, peterz@infradead.org, juri.lelli@redhat.com, vincent.guittot@linaro.org, dietmar.eggemann@arm.com, rostedt@goodmis.org, bsegall@google.com, mgorman@suse.de, bristot@redhat.com, vschneid@redhat.com, axboe@kernel.dk, asml.silence@gmail.com Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, io-uring@vger.kernel.org, kun.dou@samsung.com, peiwei.li@samsung.com, joshi.k@samsung.com, kundan.kumar@samsung.com, wenwen.chen@samsung.com, ruyi.zhang@samsung.com, Xiaobing Li Subject: [PATCH 2/3] PROC FILESYSTEM: Add real utilization data of sq thread. Date: Thu, 28 Sep 2023 10:22:27 +0800 Message-Id: <20230928022228.15770-3-xiaobing.li@samsung.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230928022228.15770-1-xiaobing.li@samsung.com> MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA01Te0xbZRT3u/f2toCd11K3D9DZ1PAHdDw62vJ1A10c6sUniWYxZNo19FqQ vtLbytBFS9wECxvoJJOOVzY1Bgooj8lYeayAezCEUGFzg0zCYwGyuQeMZGxgyy26/36/c87v +51zvhwBLlomIwU5JhtjNWkNUjKUONUbExP3wYyYSXRfDEeVdacAqp8oJdHI1CiJjs0VEGim rA1Htw79QaD+tZskmigtJ9CD4gmA2haXeMjTeYFAvo5KEh29NQvQSE8thmY7Q9C5wz0Y6ir6 G0OLvct8VNR3H0dt/X5U3tqOoaKDPrBrM+2udgP6tGuCTx/susqna5vtdMvPsbRv0E6Pj3lI +p+uUZI+0loH6JaBz+h7zVszwjJzU7IZrY6xShhTllmXY9KnSt94V7Nbo1QlyuPkapQslZi0 RiZVmvZmRtyrOQb/qFLJJ1qD3R/K0LKsNOHFFKvZbmMk2WbWliplLDqDRWGJZ7VG1m7Sx5sY 2w55YuJ2pb9wX252Q/F3wPITtd9X4gAOUCh0ghABpBTwr5JWzAlCBSLqDIDO0SXAkbsANpx/ SHLkvp9MloANSUHbEM4lOgFsHPARHJkD8EbvUSxQRVIyeLnRyQskxNTXGOw4eX2d4NS3GHS3 DvmJQBBOvQO7josDAoKKhtN9Y2QAC6kU+Kh7jc/ZPQ+7zw7iARxCpcLuu/PBmqfhhYppIoBx f82XbcfXW4LUmgCOPxzFOHEa9AwukRwOh/PnWoOPRsK50q+CmIV9Jcs8TuwA8Ni10WBiJ1z9 00MEGsWpGNjUkcCFn4PlFxsxzngTPLwyHfQSwvbqDRwN60cmCQ5HwQXHSjBOw8X6MT63rjIA Lw3f4ZUBieuxgVyPDeT637oW4HUggrGwRj2TpbTITUzefx+dZTY2g/ULiE1rB1dqVuO9ABMA L4ACXCoWTl4TMSKhTpv/KWM1a6x2A8N6gdK/8W/wyGeyzP4TMtk0coU6UaFSqRTqJJVcukW4 cKhKJ6L0WhuTyzAWxrqhwwQhkQ7MVQhK14rP7A0z7XxldXpmWDgZmpegrf5FcYU3V1A1VEk7 aS/IPHB272VHlvhIC7+Jp2z4ML+6+8EMfEp54N5UDzzdLxrufX1+5cSljMze3zS/f570pIFN vro5x6j0Jnwh60xOahdS4IeQqIpVz6YXBiLm9q2uZUg/rpDNDpPtYzcejX+/YDbXqLFuxWsp 00RYlUI3n/Z+1HuZmps72PQ9MzJX8+3doVFpkrHclx2StzsdeR+VvKWObNhWX7b0RNXKScmK T4gPWUVL17fk3znhPeyu1m97SR8hS28qLhQ3RKTXeNKLzqvC9m+He26rp4qf3SWTox9/jS5N Ni9sNTrdUoLN1spjcSur/RfWjcXSigQAAA== X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrJIsWRmVeSWpSXmKPExsWy7bCSnK7xU5FUg4+fTC3mrNrGaLH6bj+b xaXHV9kspr9sZLF4OmErs8W71nMsFkf/v2WzuNs/lcXiV/ddRoutX76yWuzZe5LF4vKuOWwW k989Y7S4dGABk8WzvZwWx3sPMFns63jAZPHl8Hd2i44j35gtth4FsqZu2cFk0dFymdFBzGPN vDWMHjtn3WX3aNl3i91jwaZSj80rtDwuny31uHNtD5vH+31X2Tz6tqxi9Nh8utrj8ya5AO4o LpuU1JzMstQifbsEroy13VMYC5YJVFzuaWBsYGzn7WLk5JAQMJFo3HqeuYuRi0NIYDejxJ6z T9i6GDmAEtISf/6UQ9QIS6z895wdxBYSeM4o0fZADsRmE9CWuL6uixXEFhGYySQx4UckyBxm gXlMEr037rKBJIQFfCX+vn/GCGKzCKhKPDlyDSzOK2Aj8Xf/f3aIBfIS+w+eZQaxOQVsJfZ/ egV2gxBQzZGV7hDlghInZz5hAbGZgcqbt85mnsAoMAtJahaS1AJGplWMkqkFxbnpucWGBUZ5 qeV6xYm5xaV56XrJ+bmbGMGxqaW1g3HPqg96hxiZOBgPMUpwMCuJ8D68LZQqxJuSWFmVWpQf X1Sak1p8iFGag0VJnPfb694UIYH0xJLU7NTUgtQimCwTB6dUA1Nf9V+2Ct3oueydIt91Ahea nqoRNbwe/qCFf2WcZNgDm2/nz925fMH/6eFL7P5bG/yMQ+62yvefyhQomcdqHrOL+fO1u8k7 b1/udDy5YFq3c84Op+C3egtn+csGyJU3rZ8vp1TH8vJB2aLA8EQ+Y4v3z6fdDbovnDx/e/w0 3omeKeeTBfbV6kfJdp7Sij2x1ojhHbu/2DQf9uOpzgoffm97I2DEkrVVruHq3a0fK+fJlnkG 7WlaMoHHULyUPb5LSf9Ap/oWX6b5V/Y/9frXENZavM6S5zHH5a0Cchzuov/XHeqd6nBw6q6D lQ03o8RfmH7i3nDgvJ2zt/3jbRyOJ3oz0to9Dkdeq6pg0jlir8RSnJFoqMVcVJwIAO4Q/SI8 AwAA X-CMS-MailID: 20230928023011epcas5p32668b193b447f1cd6bf78035f4894c42 X-Msg-Generator: CA X-Sendblock-Type: REQ_APPROVE CMS-TYPE: 105P DLP-Filter: Pass X-CFilter-Loop: Reflected X-CMS-RootMailID: 20230928023011epcas5p32668b193b447f1cd6bf78035f4894c42 References: <20230928022228.15770-1-xiaobing.li@samsung.com> Precedence: bulk List-ID: X-Mailing-List: io-uring@vger.kernel.org Since it is necessary to count and record the real utilization of the sq thread, it is recorded in the /proc/stat file. Signed-off-by: Xiaobing Li --- fs/proc/stat.c | 25 ++++++++++++++++++++++++- include/linux/kernel_stat.h | 3 +++ 2 files changed, 27 insertions(+), 1 deletion(-) diff --git a/fs/proc/stat.c b/fs/proc/stat.c index da60956b2915..bd86c0657874 100644 --- a/fs/proc/stat.c +++ b/fs/proc/stat.c @@ -79,6 +79,29 @@ static void show_all_irqs(struct seq_file *p) show_irq_gap(p, nr_irqs - next); } +static void show_sqthread_util(struct seq_file *p) +{ + int i, j; + + for_each_online_cpu(i) { + struct kernel_cpustat kcpustat; + + kcpustat_cpu_fetch(&kcpustat, i); + struct task_struct **sqstat = kcpustat.sq_util; + + for (j = 0; j < MAX_SQ_NUM; j++) { + if (sqstat[j]) { + seq_printf(p, "%d %s", sqstat[j]->pid, sqstat[j]->comm); + seq_put_decimal_ull(p, " pelt ", + (unsigned long long)sqstat[j]->se.avg.util_avg); + seq_put_decimal_ull(p, " real ", + (unsigned long long)sqstat[j]->se.sq_avg.util_avg); + seq_putc(p, '\n'); + } + } + } +} + static int show_stat(struct seq_file *p, void *v) { int i, j; @@ -187,7 +210,7 @@ static int show_stat(struct seq_file *p, void *v) for (i = 0; i < NR_SOFTIRQS; i++) seq_put_decimal_ull(p, " ", per_softirq_sums[i]); seq_putc(p, '\n'); - + show_sqthread_util(p); return 0; } diff --git a/include/linux/kernel_stat.h b/include/linux/kernel_stat.h index 9935f7ecbfb9..722703da681e 100644 --- a/include/linux/kernel_stat.h +++ b/include/linux/kernel_stat.h @@ -11,6 +11,7 @@ #include #include +#define MAX_SQ_NUM 16 /* * 'kernel_stat.h' contains the definitions needed for doing * some kernel statistics (CPU usage, context switches ...), @@ -36,6 +37,8 @@ enum cpu_usage_stat { struct kernel_cpustat { u64 cpustat[NR_STATS]; + bool flag; + struct task_struct *sq_util[MAX_SQ_NUM]; }; struct kernel_stat {