From 3a06eb6f530f2c4bad073ce8bd58e0e0157255fc Mon Sep 17 00:00:00 2001 From: Wenzong Fan Date: Tue, 18 Jun 2013 23:21:11 -0400 Subject: procps: fix that top will quit after cpu offline top utiliy fails to read /proc/stat after cpu offline, because Cpu_tot is still the original cpu numbers when calling cpus_refresh, in which it is trying to read and sscanf Cpu_tot times /proc/stat. The patch is from procps-3.2.8-2.fc12.src.rpm (From OE-Core rev: f24aed8d7e41cce277c6eff4ff5ab07b8e39ffff) Signed-off-by: Wenzong Fan Signed-off-by: Richard Purdie --- .../procps-3.2.8/procps-3.2.7-top-remcpu.patch | 111 +++++++++++++++++++++ 1 file changed, 111 insertions(+) create mode 100644 meta/recipes-extended/procps/procps-3.2.8/procps-3.2.7-top-remcpu.patch (limited to 'meta/recipes-extended/procps/procps-3.2.8') diff --git a/meta/recipes-extended/procps/procps-3.2.8/procps-3.2.7-top-remcpu.patch b/meta/recipes-extended/procps/procps-3.2.8/procps-3.2.7-top-remcpu.patch new file mode 100644 index 0000000000..0306c8d639 --- /dev/null +++ b/meta/recipes-extended/procps/procps-3.2.8/procps-3.2.7-top-remcpu.patch @@ -0,0 +1,111 @@ +Upstream-Status: Pending + +fix that top will quit after cpu offline + +top utiliy fails to read /proc/stat after cpu offline, because Cpu_tot +is still the original cpu numbers when calling cpus_refresh, in which +it is trying to read and sscanf Cpu_tot times /proc/stat. + +The patch is from procps-3.2.8-2.fc12.src.rpm + +Signed-off-by: Wenzong Fan + +--- +--- procps-3.2.7/top.c.remcpu 2006-07-10 10:41:11.000000000 +0200 ++++ procps-3.2.7/top.c 2006-07-10 10:41:35.000000000 +0200 +@@ -912,6 +912,7 @@ + static CPU_t *cpus_refresh (CPU_t *cpus) + { + static FILE *fp = NULL; ++ static int cpu_max; + int i; + int num; + // enough for a /proc/stat CPU line (not the intr line) +@@ -926,24 +927,29 @@ + can hold tics representing the /proc/stat cpu summary (the first + line read) -- that slot supports our View_CPUSUM toggle */ + cpus = alloc_c((1 + Cpu_tot) * sizeof(CPU_t)); ++ cpu_max = Cpu_tot; + } ++ else if (cpu_max > Cpu_tot) ++ /* move saved CUPs summary to cpu_max possition */ ++ memcpy(&cpus[cpu_max], &cpus[Cpu_tot], sizeof(CPU_t)); ++ + rewind(fp); + fflush(fp); + + // first value the last slot with the cpu summary line + if (!fgets(buf, sizeof(buf), fp)) std_err("failed /proc/stat read"); +- cpus[Cpu_tot].x = 0; // FIXME: can't tell by kernel version number +- cpus[Cpu_tot].y = 0; // FIXME: can't tell by kernel version number +- cpus[Cpu_tot].z = 0; // FIXME: can't tell by kernel version number ++ cpus[cpu_max].x = 0; // FIXME: can't tell by kernel version number ++ cpus[cpu_max].y = 0; // FIXME: can't tell by kernel version number ++ cpus[cpu_max].z = 0; // FIXME: can't tell by kernel version number + num = sscanf(buf, "cpu %Lu %Lu %Lu %Lu %Lu %Lu %Lu %Lu", +- &cpus[Cpu_tot].u, +- &cpus[Cpu_tot].n, +- &cpus[Cpu_tot].s, +- &cpus[Cpu_tot].i, +- &cpus[Cpu_tot].w, +- &cpus[Cpu_tot].x, +- &cpus[Cpu_tot].y, +- &cpus[Cpu_tot].z ++ &cpus[cpu_max].u, ++ &cpus[cpu_max].n, ++ &cpus[cpu_max].s, ++ &cpus[cpu_max].i, ++ &cpus[cpu_max].w, ++ &cpus[cpu_max].x, ++ &cpus[cpu_max].y, ++ &cpus[cpu_max].z + ); + if (num < 4) + std_err("failed /proc/stat read"); +@@ -955,7 +961,7 @@ + } + + // now value each separate cpu's tics +- for (i = 0; 1 < Cpu_tot && i < Cpu_tot; i++) { ++ for (i = 0; ; i++) { + if (!fgets(buf, sizeof(buf), fp)) std_err("failed /proc/stat read"); + cpus[i].x = 0; // FIXME: can't tell by kernel version number + cpus[i].y = 0; // FIXME: can't tell by kernel version number +@@ -964,9 +970,35 @@ + &cpus[i].id, + &cpus[i].u, &cpus[i].n, &cpus[i].s, &cpus[i].i, &cpus[i].w, &cpus[i].x, &cpus[i].y, &cpus[i].z + ); +- if (num < 4) +- std_err("failed /proc/stat read"); ++ if (num < 4) { ++ Cpu_tot = i; ++ break; ++ } ++ if (i == cpu_max - 1) { ++ // Bump cpu_max and extend cpus ++ cpu_max++; ++ cpus = realloc(cpus, (1 + cpu_max) * sizeof(CPU_t)); ++ if (!cpus) std_err("realloc failed"); ++ memcpy(&cpus[cpu_max], &cpus[cpu_max-1], sizeof(CPU_t)); ++ } ++ } ++ ++ if (cpu_max > Cpu_tot) ++ memcpy(&cpus[Cpu_tot], &cpus[cpu_max], sizeof(CPU_t)); ++ ++ // and just in case we're 2.2.xx compiled without SMP support... ++ if (Cpu_tot == 1) { ++ cpus[0].id = cpus[1].id = 0; ++ cpus[0].u = cpus[1].u; ++ cpus[0].n = cpus[1].n; ++ cpus[0].s = cpus[1].s; ++ cpus[0].i = cpus[1].i; ++ cpus[0].w = cpus[1].w; ++ cpus[0].x = cpus[1].x; ++ cpus[0].y = cpus[1].y; ++ cpus[0].z = cpus[1].z; + } ++ + return cpus; + } + -- cgit v1.2.3-54-g00ecf